@techreport{BenekenDihFriedetal.2018, author = {Beneken, Gerd and Dih, Denise and Fried, Adrian and Hauch, Julia and Hummel, Sabine and Junker, Elmar and Karlinger, Peter and K{\"o}ster, Heinrich and Krause, Harald and Muscat, Dirk and Niedermaier, Peter and Sch{\"a}fle, Claudia and Schutter, Sabina and Sigr{\"u}ner, Michael and Stanzel, Silke and Str{\"u}bbe, Nicole and Werndl, Peter and Wirnsberger, Markus and Zentgraf, Peter}, title = {Jahresbericht 2018, Forschung - Entwicklung - Innovation}, organization = {Technische Hochschule Rosenheim}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:861-opus4-12374}, pages = {68}, year = {2018}, abstract = {Mit dem j{\"a}hrlich erscheinenden Forschungsbericht m{\"o}chte die Technische Hochschule Rosenheim einen Einblick in ihre vielf{\"a}ltigen Projekte und Aktivit{\"a}ten der angewandten Forschung und Entwicklung geben. Im Jahresbericht 2018 wird {\"u}ber Vorhaben im Jahr 2018 berichtet.}, language = {de} } @techreport{AlversammerAngermeierBernhardtetal.2013, author = {Alversammer, Wolfgang and Angermeier, Martin and Bernhardt, Andreas and Bischof, Wolfgang and Botsch, Rafael and Eierle, Benno and Feldmeier, Franz and Hack, Andreas and Hauck-Bauer, Eva and Heigl, Martin and K{\"o}lzer, Brigitte and K{\"o}ster, Heinrich and Krose, Eva and Leps, Torsten and Mennicken, Titus and Muscat, Drik and Ober, Thorsten and Ott, Robert and Ruminski, Nils and Seidlmeier, Heinrich and Stauss, Kilian and Stetter, Andrea and Viehhauser, Peter and Wambsganß, Mathias and Zagler, Stefan and Zauner, Johannes and Zentgraf, Peter}, title = {Forschungsbericht 2012}, organization = {Hochschule Rosenheim}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:861-opus4-12338}, pages = {48}, year = {2013}, abstract = {Mit dem j{\"a}hrlich erscheinenden Forschungsbericht m{\"o}chte die Hochschule Rosenheim einen Einblick in ihre vielf{\"a}ltigen Projekte und Aktivit{\"a}ten der angewandten Forschung und Entwicklung geben. Im Forschungsbericht 2012 wird {\"u}ber Vorhaben im Jahr 2012 berichtet.}, language = {de} } @techreport{AckermannAngermeierAueretal.2014, author = {Ackermann, Timo and Angermeier, Martin and Auer, Veronika and Beneken, Gerd and Bernhardt, Andreas and Botsch, Rafael and B{\"u}cker, Dominikus and Hager, Ralf and Hauck-Bauer, Eva and Heigl, Martin and Hirschm{\"u}ller, Sebastian and H{\"o}llm{\"u}ller, Janett and Karlinger, Peter and K{\"o}ster, Heinrich and Krause, Harald and Kucich, Martin and Matthias, Kira and Patzl, Victoria and Pl{\"o}nnigs, Ren{\´e} and Posch, Georg and Schanda, Ulrich and Scheerer, Josua and Schlecht, Johannes and Schmidt, Jochen and Stichler, Markus and Uhl, Cornelius and Viehhauser, Peter and Weber, Gabriel and Wolf, Christopher and Zagler, Stefan and Zentgraf, Peter}, title = {Forschungsbericht 2013}, organization = {Hochschule Rosenheim}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:861-opus4-12324}, pages = {56}, year = {2014}, abstract = {Mit dem j{\"a}hrlich erscheinenden Forschungsbericht m{\"o}chte die Hochschule Rosenheim einen Einblick in ihre vielf{\"a}ltigen Projekte und Aktivit{\"a}ten der angewandten Forschung und Entwicklung geben. Im Forschungsbericht 2013 wird {\"u}ber Vorhaben im Jahr 2013 berichtet.}, language = {de} } @techreport{BauerBeneckenBueckeretal.2015, author = {Bauer, Lucia and Benecken, Gerd and B{\"u}cker, Dominikus and Buff, Alexander and Carlton, Katrina and Feldmeier, Franz and Flatscher, Simon and Hack, Andreas and Halt, Manfred and Jell, Peter and K{\"o}ster, Heinrich and Kucich, Martin and Manzinger, Franziska and Mecking, Simon and Paus, Inger and Rex, Steffen and Schanda, Ulrich and Schreyer, Manuela and Spindler, Uli and Stadler, Constanze and Stahnke, Svenja and Stiegler, Gertrud and Walser, Georg and Wambsganß, Mathias and Wellisch, Ulrich}, title = {Forschungsbericht 2014}, organization = {Hochschule Rosenheim}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:861-opus4-12317}, pages = {68}, year = {2015}, abstract = {Mit dem j{\"a}hrlich erscheinenden Forschungsbericht m{\"o}chte die Hochschule Rosenheim einen Einblick in ihre vielf{\"a}ltigen Projekte und Aktivit{\"a}ten der angewandten Forschung und Entwicklung geben. Im Forschungsbericht 2014 wird {\"u}ber Vorhaben im Jahr 2014 berichtet.}, language = {de} } @techreport{BarthBeneckenBetzetal.2016, author = {Barth, Simon and Benecken, Gerd and Betz, Andreas and Binninger, Karsten and Graule, Verena and Hack, Andreas and Haegele, Rainer and Hartmann, Markus and Hauck-Bauer, Eva and Haut, Sandra and J{\"a}ger, Johannes and Kagerl, Andreas and Karlinger, Peter and Konle, Elke and K{\"o}ster, Heinrich and Krause, Harald and Krommes, Sandra and Meissner, Thomas and Michanickl, Andreas and Sandor, Viktor and Schanda, Ulrich and Schemme, Michael and Sebald, Daniela and Spindler, Uli and Stauss, Kilian and Strobl, Thomas and Sussmann, Monika and Versen, Martin and Voit, Johann and Wambsganß, Mathias and Wellisch, Ulrich and Zauner, Johannes}, title = {Forschungsbericht 2015}, organization = {Hochschule Rosenheim}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:861-opus4-12304}, pages = {76}, year = {2016}, abstract = {Mit dem j{\"a}hrlich erscheinenden Forschungsbericht m{\"o}chte die Hochschule Rosenheim einen Einblick in ihre vielf{\"a}ltigen Projekte und Aktivit{\"a}ten der angewandten Forschung und Entwicklung geben. Im Forschungsbericht 2015 wird {\"u}ber Vorhaben im Jahr 2015 berichtet.}, language = {de} } @techreport{AuerBenekenBrummeretal.2017, author = {Auer, Veronika and Beneken, Gerd and Brummer, Benjamin and Ch{\^a}teauvieux-Hellwig, Camille and Engler, Benjamin and Gilly, Alexander and Hagl, Rainer and Hummel, Felix and Hummel, Sabine and Karlinger, Peter and Knorr, Ludwig and K{\"o}ster, Heinrich and Kucich, Martin and Mecking, Simon and Rabold, Andreas and Sandor, Viktor and Schalk, Daniel and Schanda, Ulrich and Schemme, Michael and Schiffner, Ivonne and Schmidt, Jochen and Schugmann, Reinhard and Seidlmeier, Heinrich and Sigg, Ferdinand and Stauss, Kilian and Sussmann, Monika and Wellisch, Ulrich and Wenninger, Marc and Wittmann, Josef and Zscheile, Matthias}, title = {Jahresbericht 2016, Forschung - Entwicklung - Innovation}, organization = {Hochschule Rosenheim}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:861-opus4-12282}, pages = {68}, year = {2017}, abstract = {Mit dem j{\"a}hrlich erscheinenden Forschungsbericht m{\"o}chte die Hochschule Rosenheim einen Einblick in ihre vielf{\"a}ltigen Projekte und Aktivit{\"a}ten der angewandten Forschung und Entwicklung geben. Im Jahresbericht 2016 wird {\"u}ber Vorhaben im Jahr 2016 berichtet.}, language = {de} } @techreport{AckermannHauckBauerJaegeretal.2018, author = {Ackermann, Timo and Hauck-Bauer, Eva and J{\"a}ger, Johannes and K{\"o}ster, Heinrich and Krause, Harald and Mayr, Wolfgang and Mysliwetz, Birger and Niedermaier, Peter and Ober, Thorsten and Pfaffenberger, Ulrich and Stauss, Kilian and Werndl, Peter and Zscheile, Matthias}, title = {Jahresbericht 2017, Forschung - Entwicklung - Innovation}, organization = {Hochschule Rosenheim}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:861-opus4-12278}, pages = {68}, year = {2018}, abstract = {Mit dem j{\"a}hrlich erscheinenden Forschungsbericht m{\"o}chte die Hochschule Rosenheim einen Einblick in ihre vielf{\"a}ltigen Projekte und Aktivit{\"a}ten der angewandten Forschung und Entwicklung geben. Im Jahresbericht 2017 wird {\"u}ber Vorhaben im Jahr 2017 berichtet.}, language = {de} } @article{ObermeierSchumacherBarthetal.2020, author = {Obermeier, Frederik and Schumacher, Mara and Barth, Simon and Karlinger, Peter and Schemme, Michael and Michanickl, Andreas}, title = {Thermoplastische Hybridverbunde mit Holzfasern - Leichtbau mit Naturfasern}, series = {Plastverarbeiter}, volume = {2020}, journal = {Plastverarbeiter}, number = {2}, publisher = {H{\"u}thig GmbH}, address = {Heidelberg}, pages = {34-36}, year = {2020}, abstract = {Gewichtsreduktion ist eine der entscheidenden Herausforderungen, um nachhaltige Fahrzeuge zu entwickeln. Der Einsatz von nachwachsenden Rohstoffen in Form von Naturfasern, wie Flachs, Kenaf, Hanf, ist Stand der Technik und findet vor allem in der Automobilindustrie Anwendung. Die Gr{\"u}nde sind zahlreich. Naturfasern sind wesentlich kosteng{\"u}nstiger als Carbonfasern und leichter als Glasfasern. Dadurch ergeben sich Kosten- und Gewichtsvorteile. Es lassen sich zudem hervorragende mechanische Eigenschaften erzielen. Schließlich bietet die Verwendung von Naturfasern einen deutlichen {\"o}kologischen Vorteil. H{\"a}ufig kommen dabei Hybridverbunde zum Einsatz. Durch Hybridverbunde lassen sich die Vorteile von Spritzguss und Pressverfahren kombinieren (Funktionalisierung bei hoher Eigensteifigkeit).}, language = {de} } @inproceedings{ObermeierSchumacherBarthetal.2019, author = {Obermeier, Frederik and Schumacher, Mara and Barth, Simon and Karlinger, Peter and Schemme, Michael and Michanickl, Andreas}, title = {Thermoplastische Holzfaservliese f{\"u}r Hybridverbunde}, series = {13. Holzwerkstoffkolloqium}, booktitle = {13. Holzwerkstoffkolloqium}, publisher = {Institut f{\"u}r Holztechnologie Dresden gemeinn{\"u}tzige GmbH}, address = {Dresden}, pages = {66 -- 67}, year = {2019}, abstract = {Leichtbau und Ressourcenschonung sind zentrale Themen des 21. Jahrhunderts. Hybridverbunde mit Naturfasern (z.B. Flachs, Kenaf) sind Stand der Technik und werden v.a. im Automobilbau verwendet. Durch Hybridverbunde lassen sich die Vorteile von Spritzguss und Pressverfahren kombinieren (Funktionalisierung bei hoher Eigensteifigkeit). Obwohl Holzfasern diverse Vorteile gegen{\"u}ber Naturfasern bieten (z.B. geringere Rohstoffrisiken), sind sie in diesem Bereich noch nicht umfassend untersucht.}, language = {de} } @inproceedings{ObermeierSchumacherBarthetal.2019, author = {Obermeier, Frederik and Schumacher, Mara and Barth, Simon and Karlinger, Peter and Schemme, Michael and Michanickl, Andreas}, title = {Thermoplastische Hybridverbunde mit Holzfaserverst{\"a}rkung}, series = {Technomer 2019}, booktitle = {Technomer 2019}, publisher = {Technomer 2019}, address = {Technische Universit{\"a}t Chemnitz}, pages = {11}, year = {2019}, abstract = {Leichtbau und ressourcenschonende Herstellungstechnologien sind zentrale Themen des 21. Jahrhunderts. Thermoplastische Hybridverbunde mit endlosfaserverst{\"a}rkten Einlegern spielen dabei eine große Rolle, sogenannte Organobleche. Auch Hybridverbunde mit Naturfaserverst{\"a}rkung sind seit langem Stand der Technik und werden vor allem in der Automobilindustrie verwendet. Holzfasern sind in diesem Bereich jedoch noch nicht umfassend untersucht. Der Vortrag befasst sich mit dem Potenzial von Holzfasern f{\"u}r thermoplastische Hybridverbunde im Vergleich zu Naturfasern. Dabei wird ein Einblick auf prozess- und materialtechnische Untersuchungen gegeben. Bei den Versuchen kommen diverse Technologien zum Einsatz. Holzfasern werden {\"u}ber ein Air-Lay-Verfahren mit Kunststofffasern zu einem Vlies gelegt. Bei der Weiterverarbeitung der konsolidierten Vliese zu Hybridverbunden, werden diese mit direkt compoundierten Holzfasern {\"u}ber einen In-Mould-Compounder angespritzt. Es zeigt sich, dass Faserverbunde mit Holzfasern vielversprechende Eigenschaften haben. Weitere Untersuchungen sind n{\"o}tig, um ein tiefgreifendes Verst{\"a}ndnis f{\"u}r die Werkstoffe und die Prozesse zu entwickeln.}, language = {de} } @inproceedings{SchemmeDittmarKarlingeretal.2019, author = {Schemme, Michael and Dittmar, Harri and Karlinger, Peter and Hummel, Sabine}, title = {Closed-Loop-Recycling - Strategien f{\"u}r endlosfaserverst{\"a}rkte thermoplastische Hybridstrukturen (Vortrag)}, series = {FOREL Kolloquium}, booktitle = {FOREL Kolloquium}, year = {2019}, language = {de} } @article{HummelSchemmeKarlinger2019, author = {Hummel, Sabine and Schemme, Micheal and Karlinger, Peter}, title = {GmbH - Glasfaserhybride mit bester Haftung: Variotherme Temperierung f{\"u}r Organobleche}, series = {Plastverarbeiter}, volume = {07/2019}, journal = {Plastverarbeiter}, number = {07}, publisher = {H{\"u}thig GmbH}, address = {Heidelberg}, pages = {2}, year = {2019}, abstract = {Durch Integrieren der Variothermie k{\"o}nnen Organobleche wirtschaftlich und technisch verbessert zu Hybridbauteilen verarbeitet werden. Somit steigert sich der Wettbewerbsvorteil gegen{\"u}ber konventionellen Werkstoffen weiter. An einer Technische Hochschule wird seit mehr als zehn Jahren intensiv an der Thematik der Verbindungstechnologien sowie den Haftungsmechanismen zwischen endlosfaserverst{\"a}rkten Thermoplasten, den sogenannten Organoblechen, und angespritzten Funktionsstrukturen geforscht. Im Fokus stehen prozesstechnische Einfl{\"u}sse, die die Verbundhaftung der Hybridleichtbaustrukturen erh{\"o}hen.}, language = {de} } @article{HirschmuellerPravidaMarteetal.2019, author = {Hirschm{\"u}ller, Sebastian and Pravida, Johann and Marte, Roman and Flach, Michael}, title = {Long-term material properties of circular hollow laminated veneer lumber sections under water saturation and cement alkaline attack}, series = {Wood Material Science and Engineering}, volume = {14}, journal = {Wood Material Science and Engineering}, number = {3}, pages = {142 -- 156}, year = {2019}, abstract = {Innovative beech laminated veneer lumber (LVL) circular hollow sections for the use as temporary geotechnical soil nailing systems are currently being developed. Due to the permanent subsoil cement embedment, combined with high water saturation and permanent loading, the timber sections will lose strength and stiffness over time to a degree currently unknown. This paper presents the tensile and bending material properties of flat and curved beech LVL under various periods of immersion in a water-cement grout solution aiming at inducing both water saturation and long-term alkaline attack of the timber. In total, 824 and 279 samples were tested in tension and bending, respectively. Results show that samples manufactured from 3 mm thick veneers result in tensile strength and stiffness 17\% and 24\% higher, respectively, than samples manufactured from 2 mm thick veneers. A reduction in the initial bending and tensile strength of up to 70\% was found after 90 days of water saturation and cement contact. Taking into account a duration of load factor for permanent loading of two years, it is recommended to reduce the short-term tensile and bending strength of beech circular hollow sections to be used as geotechnical anchors by 80\%.}, language = {en} } @inproceedings{MonsbergerLienhartMarteetal.2018, author = {Monsberger, Christoph and Lienhart, Werner and Marte, Roman and Hirschm{\"u}ller, Sebastian}, title = {Monitoring of soil nailed slope stabilizations using distributed fiber optic sensing}, series = {Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018}, volume = {10598}, booktitle = {Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018}, editor = {Sohn, Hoon}, doi = {10.1117/12.2296674}, year = {2018}, abstract = {Soil nailing systems are a common way to stabilize slopes and construction pits. Their design is usually based on the mechanical equilibrium of a rigid body motion and therefore, only tensile stresses are considered and accompanying forces like bending (shear stresses) in the soil nails are neglected. Continuous strain measurements along nails could verify this assumption, but may not be performed using conventional sensing technologies. This paper reports about monitoring of a soil nailed slope stabilization using distributed fiber optic sensing. Soil nails in different anchoring horizons were instrumented and autonomously monitored over several weeks, in which the construction pit was excavated continuously. After the excavation, the final load bearing capacity of one selected nail was determined within a classical geotechnical load test. In addition to the field measurements, the bending behavior of the instrumented nail system was analyzed under laboratory conditions. The presented studies demonstrate the high potential of distributed fiber optic sensing systems and their capability to extend traditional measurement methods in foundation engineering applications.}, language = {en} } @article{HirschmuellerPravidaMarteetal.2018, author = {Hirschm{\"u}ller, Sebastian and Pravida, Johann and Marte, Roman and Flach, Michael}, title = {Adhesive properties of laminated veneer lumber poles for use in temporary soil nailing: development and evaluation of a test method for curved structures in a high-alkaline environment}, series = {Wood Science and Technology}, volume = {52}, journal = {Wood Science and Technology}, number = {4}, editor = {Springer,}, pages = {1061 -- 1092}, year = {2018}, abstract = {Innovative circular, hollow, laminated veneer lumber (LVL) beech sections for use as temporary geotechnical soil reinforcement members are currently being developed. Appropriate surface gluing quality between the veneers is fundamental to this subsoil application of the permanently cement-embedded, engineered timber product. The circular cross-section geometry and the permanently high-alkaline environment of the structural member is not covered by presently standardized testing and conditioning methods for examining LVL surface bond line quality. The sample conditioning and tensile shear test method compliant with EN 302-1 (Adhesives for load-bearing timber structures—test methods—part 1: determination of longitudinal tensile shear strength, European Committee for Standardization, Brussels, 2013) was modified to determine bonding parameters for circular, hollow LVL sections. Bond line curvature, groove cutting depth and sample geometry were found to greatly influence stress distribution, percentage of wood failure and tensile shear strength. Short-term alkaline treatment of test samples did not significantly influence the bonding performance, wood failure percentage, tensile shear strength and fracture patterns. To improve tensile shear strength, adhesives with different material rigidities were used and compared. An orthotropic, elastic numerical analysis revealed a greater influence of adherent elasticity than adhesive elasticity on the stress distribution within the bond line. With regard to determining the bond line integrity of curved veneer poles, a sample geometry compliant with EN 302-1 (2013) was developed and numerically evaluated.}, language = {en} } @inproceedings{HirschmuellerMartePravida2016, author = {Hirschm{\"u}ller, Sebastian and Marte, Roman and Pravida, Johann}, title = {Laminated veneer lumber poles for temporary soil nailing - investigation of material properties}, series = {Proceedings of the World Conference on Timber Engineering. World Conference on Timber Engineering. Vienna, 22.-25.08. Vienna}, booktitle = {Proceedings of the World Conference on Timber Engineering. World Conference on Timber Engineering. Vienna, 22.-25.08. Vienna}, editor = {Eberhardsteiner, Josef and Winter, Wolfgang and Fadai, A. and P{\"o}ll, Martha}, year = {2016}, abstract = {Within a current research project at Rosenheim University of Applied Sciences and Graz University of Technology the possibilities of using beech wood laminated veneer lumber poles as soil anchors for temporary soil nailing systems are investigated. Therefore tensile and bending properties of laminated veneers with high moisture and permanent cement contact concerning the influence of veneer bending rectangular to the fibre are determined. For investigation of material properties under different climate conditions tensile tests on small and faultless single beech wood veneers as well as tensile tests on 6 layered 3 mm samples and 9 layered 2 mm samples were carried out. Therefore all samples were stored in extreme climate conditions like high moisture content and permanent cement contact. Six layered samples with 3mm thick veneers show a slightly higher strength and stiffness under dry conditions as well as at a moisture content of the samples above fibre saturation. A strength reduction factor concerning temporary geotechnical applications is suggested which considers the influence of long term loading, veneer bending, water saturation and cement destruction on tensile properties of laminated veneer lumber poles.}, language = {en} } @article{HirschmuellerMartePravidaetal.2018, author = {Hirschm{\"u}ller, Sebastian and Marte, Roman and Pravida, Johann and Flach, Michael}, title = {Inhibited wood degradation of cement-coated beech Laminated Veneer Lumber (LVL) for temporary in-ground applications.}, series = {European Journal of Wood and Wood Products}, volume = {76}, journal = {European Journal of Wood and Wood Products}, number = {5}, editor = {Springer,}, pages = {1483 -- 1494}, year = {2018}, abstract = {This paper investigates the long-term tensile properties of laminated veneer lumber (LVL) beech sections coated with cement and exposed to fungal decay. A set of LVL coupon (dog-bone) samples was stored in compost, tested in tension after 6 and 12 months and compared to reference samples stored at 20 °C and 65\% relative humidity. Results showed that after 26 weeks of compost exposure, a fungus of the Ascomycota genus was identified in cement-coated samples using a molecular biology polymerase chain reaction (PCR) technique, which analyses the internal transcribed spacer (ITS) region of the ribosomal DNA. However, no visual deterioration was noticed. Still in cement-covered samples and after 12 months of exposure, a common white rot fungus was determined by DNA chip technology, but no fungal wood decay was visible in areas where the applied coating had a thickness of at least 5 mm. Decay in uncoated LVL samples was significant with the samples having an average residual strength equal to 7\%. This compares to the tensile strength of coated samples, which only decreased by 65\% relative to the reference samples. Strength and stiffness of coated samples did not differ significantly between 6 and 12 months of exposure. Preliminary investigations tend to show that the strength reduction in cement-coated samples is due to an alkaline degradation of the wood. The observed influence of the coating thickness on the visual fungal decay can probably be ascribed to the protection mechanism due to a physical fungal barrier with a high pH.}, language = {en} } @inproceedings{HirschmuellerPravidaMarteetal.2016, author = {Hirschm{\"u}ller, Sebastian and Pravida, Johann and Marte, Roman and Flach, Michael}, title = {Laminated veneer lumber poles for use in temporary soil nailing. Investigation of adhesive properties.}, series = {Holzbau Forschung und Praxis. 6. Doktorandenkolloqium 2016}, booktitle = {Holzbau Forschung und Praxis. 6. Doktorandenkolloqium 2016}, editor = {Universit{\"a}t Stuttgart,}, year = {2016}, abstract = {Within a current research-project the possibility of using laminated veneer lumber beech wood poles as temporary soil anchors in foundation engineering is investigated. Within this project adhesive properties of laminated veneer lumber beech wood poles are determined. For use in temporary ground applications the influence of veneer bending, veneer thickness and intensive cement contact is concerned. As standard version two different adhesive systemsmelamine formaldehyde resin (MUF) and a 1-component polyurethane adhesive (PUR) were investigated and compared. Melamine formaldehyde resin glued samples with 3 mm thick veneers and 1.0N/mm² press force show a higher tensile shear strength but also a higher adhesive failure percentage than polyurethane glued samples. In case of melamine formaldehyde resins the closed time has a great influence on bond line quality. A long closed time reveals a low penetration of adhesive in the cells and a low embedding on the wood surface. For curved structures best results were achieved with a bonding pressure of 1.0 N/mm². A significant difference in strength between the concerned MUF and PUR adhesive system was not recognized.}, language = {en} } @article{HirschmuellerPravidaMarteetal.2018, author = {Hirschm{\"u}ller, Sebastian and Pravida, Johann and Marte, Roman and Flach, Michael}, title = {Adhesive properties of laminated veneer lumber poles for use in temporary soil nailing: bonding performance of curved structures in a high-alkaline environment}, series = {Wood Science and Technology}, volume = {52}, journal = {Wood Science and Technology}, number = {5}, editor = {Springer,}, pages = {1289 -- 1311}, year = {2018}, abstract = {Circular hollow sections of beech-laminated veneer lumber (LVL) for the use as temporary geotechnical soil nailing systems are currently being developed. Due to their permanent subsoil cement embedment, investigations of the bond line quality of the timber sections are essential. This paper presents the bonding properties of flat and curved beech LVL after cyclic conditioning in a water-cement grout solution aimed at inducing short- and long-term alkaline attack of the timber. In total, 409 and 69 samples were tested in tensile shear tests after short-term and long-term conditioning, respectively. Three different adhesive systems, a one-component polyurethane adhesive, a melamine-urea-formaldehyde adhesive and a melamine-urea-formaldehyde adhesive modified by means of (polyvinyl)-acetate adhesive were investigated and compared. Short-term conditioning by submersion in boiling cement suspension was found to be a reliable method for testing the bonding performance rather than long-term conditioning. In the case of tensile shear tests of samples subjected to long-term treatment, wood material strength was the decisive criterion. Generally, tensile shear test samples of all investigated adhesives achieved reliable bonding for a pressing force up to 1.0 MPa. No relationship was recognised between the determined bonding failure and the wood properties tensile shear strength, wood failure percentage, fracture pattern and bulk density of veneers adjacent to the bond line. For the determination of the bond line integrity of curved veneer poles, it was necessary to test bonding quality in a combined test using curved and flat samples and to compare tensile shear strength with data determined on reference samples in the same veneer population without bond line.}, language = {en} } @article{WentzkyTittelJaegeretal.2018, author = {Wentzky, V. C. and Tittel, J. and J{\"a}ger, Christoph G. and Rinke, K.}, title = {Mechanisms preventing a decrease in phytoplankton biomass after phosphorus reductions in a German drinking water reservoir—results from more than 50 years of observation}, series = {Freshwater Biology}, volume = {63}, journal = {Freshwater Biology}, number = {9}, editor = {Wiley,}, pages = {1063 -- 1076}, year = {2018}, abstract = {1. To counteract the severe consequences of eutrophication on water quality and ecosystem health, nutrient inputs have been reduced in many lakes and reservoirs during the last decades. Contrary to expectations, in some lakes phytoplankton biomass did not decrease in response to oligotrophication (nutrient reduction). The underlying mechanisms preventing a decrease in biomass in these lakes are the subject of ongoing discussion. 2. We used a hitherto unpublished long-term data set ranging from 1961 until 2016 from a German drinking water reservoir (Rappbode Reservoir) to investigate the underlying mechanisms preventing a decrease in biomass. Total phosphorus (TP) concentrations in the Rappbode Reservoir dropped abruptly in 1990 from 0.163 to 0.027 mg/L within three consecutive years, as a result of banning phosphate-containing detergents. Despite substantial reductions in TP, total annual phytoplankton biomass did not decline in the long-run, and therefore, the yield of total phytoplankton biomass per unit phosphorus largely increased. 3. Regression analysis revealed a positive association between the yield and potentially phagotrophic mixotrophs (R2 = .465, p < .001). We infer that by ingesting bacteria, mixotrophic species were capable of exploiting additional P sources that are not accessible to obligate autotrophic phytoplankton, eventually preventing a decrease in algal biomass after TP reductions. 4. Long-term epilimnetic phosphorus concentrations during the winter mixing period decreased to a greater degree than summer phosphorus concentrations. Apparently, TP losses over the season were less intense. Spring diatom biomass also markedly decreased after oligotrophication. In fact, spring diatom biomass was positively related to the TP loss over the season suggesting diatoms play an important role in P reduction. However, this intraannual P processing was not the primary factor when focusing on the average yearly yield, which remained to be fully explained by mixotrophs. 5. Our study demonstrates this ecosystem's ability to compensate for changes in resource availability through changes in phytoplankton community composition and functional strategies. We conclude that an increase in mixotrophy and the ability to make bacterial phosphorus available for phytoplankters were the main factors that allowed the phytoplankton community of the Rappbode Reservoir to adapt to lower nutrient levels without a loss in total biomass.}, language = {en} } @article{JaegerBorchardt2018, author = {J{\"a}ger, Christoph G. and Borchardt, D.}, title = {Longitudinal patterns and response lengths of algae in riverine ecosystems: A model analysis emphasising benthic-pelagic interactions}, series = {Journal of Theoretical Biology}, volume = {442}, journal = {Journal of Theoretical Biology}, pages = {66 -- 78}, year = {2018}, abstract = {In riverine ecosystems primary production is principally possible in two habitats: in the benthic layer by sessile algae and in the surface water by planktonic algae being transported downstream. The relevance of these two habitats generally changes along the rivers' continuum. However, analyses of the interaction of algae in these two habitats and their controlling factors in riverine ecosystems are, so far, very rare. We use a simplified advection-diffusion model system combined with ecological process kinetics to analyse the interaction of benthic and planktonic algae and nutrients along idealised streams and rivers at regional to large scales. Because many of the underlying processes affecting algal dynamics are influenced by depth, we focus particularly on the impact of river depth on this interaction. At constant environmental conditions all state variables approach stable spatial equilibria along the river, independent of the boundary conditions at the upstream end. Because our model is very robust against changes of turbulent diffusion and stream velocity, these spatial equilibria can be analysed by a simplified ordinary differential equation (ode) version of our model. This model variant reveals that at shallower river depths, phytoplankton can exist only when it is subsidised by detaching benthic algae, and in turn, at deeper river depths, benthic algae can exist only in low biomasses which are subsidised by sinking planktonic algae. We generalise the spatial dynamics of the model system using different conditions at the upstream end of the model, which mimic various natural or anthropogenic factors (pristine source, dam, inflow of a waste water treatment plant, and dilution from e.g. a tributary) and analyse how these scenarios influence different aspects of the longitudinal spatial dynamics of the full spatial model: the relation of spatial equilibrium to spatial maximum, the distance to the spatial maximum, and the response length. Generally, our results imply that shallow systems recover within significantly shorter distances from spatially distinct disturbances when compared to deep systems, independent of the type of disturbance.}, language = {en} } @article{DupasMusolffJawitzetal.2017, author = {Dupas, R. and Musolff, A. and Jawitz, J. W. and Rao, P. S. C. and J{\"a}ger, Christoph G. and Fleckenstein, J. H. and Rode, M. and Borchardt, D.}, title = {Carbon and nutrient export regimes from headwater catchments to downstream reaches}, series = {Biogeosciences}, volume = {14}, journal = {Biogeosciences}, number = {18}, pages = {4391 -- 4407}, year = {2017}, abstract = {Excessive amounts of nutrients and dissolved organic matter in freshwater bodies affect aquatic ecosystems. In this study, the spatial and temporal variability in nitrate (NO3-), dissolved organic carbon (DOC) and soluble reactive phosphorus (SRP) was analyzed in the Selke (Germany) river continuum from three headwaters draining 1-3 km2 catchments to two downstream reaches representing spatially integrated signals from 184-456 km2 catchments. Three headwater catchments were selected as archetypes of the main landscape units (land use  ×  lithology) present in the Selke catchment. Export regimes in headwater catchments were interpreted in terms of NO3-, DOC and SRP land-to-stream transfer processes. Headwater signals were subtracted from downstream signals, with the differences interpreted in terms of in-stream processes and contributions from point sources. The seasonal dynamics for NO3- were opposite those of DOC and SRP in all three headwater catchments, and spatial differences also showed NO3- contrasting with DOC and SRP. These dynamics were interpreted as the result of the interplay of hydrological and biogeochemical processes, for which riparian zones were hypothesized to play a determining role. In the two downstream reaches, NO3- was transported almost conservatively, whereas DOC was consumed and produced in the upper and lower river sections, respectively. The natural export regime of SRP in the three headwater catchments mimicked a point-source signal (high SRP during summer low flow), which may lead to overestimation of domestic contributions in the downstream reaches. Monitoring the river continuum from headwaters to downstream reaches proved effective to jointly investigate land-to-stream and in-stream transport, and transformation processes.}, language = {en} } @article{JaegerHagemannBorchardt2017, author = {J{\"a}ger, Christoph G. and Hagemann, J. and Borchardt, D.}, title = {Can nutrient pathways and biotic interactions control eutrophication in riverine ecosystems? Evidence from a model driven mesocosm experiment}, series = {Water Research}, volume = {115}, journal = {Water Research}, pages = {162 -- 171}, year = {2017}, abstract = {Ecological theory predicts that the relative importance of benthic to planktonic primary production usually changes along the rivers' continuum from a predomination of benthic algae in lower stream orders to a predomination of planktonic algae at higher orders. Underlying mechanisms driving the interaction between algae in these habitats, its controlling factors and consequences for riverine ecosystems are, however, only partly understood. We present a mechanistic analysis of the governing ecological processes using a simplified, numerical model and examine how abiotic factors and biotic interactions influence benthic and planktonic algae by changing resource competition. We compare the outcome of the model with the results of a factorial mesocosm experiment mimicking the parameter spaces of the model. The results show a remarkable similarity with regard to the temporal development of benthic and pelagic algal biomass and shifting dominance patterns. In particular we analyse the effects of the pathways of nutrient supply (upwelling from the hyporheic zone, direct supply to the surface water, or via both pathways) and grazing in a gradient of river depths. Our results show that detachment of benthic algae, sinking of planktonic algae and the pathway of nutrient supply are key processes determining the respective algal biomass distributions particularly in shallow and intermediate deep systems. Increasing nutrient supply increases algal biomasses, but does not change the general pattern of the interactions. Decreasing light supply decreases the dominance of planktonic algae, but increases dissolved nutrients. At intermediate to high grazing rates algal biomass can be controlled by grazers, but however, at high grazing rates, dissolved nutrients accumulate in the surface water. Our results indicate that nutrient pathways, resource competition and internal control by grazing need to be considered explicitly for the understanding and explanation of eutrophication phenomena in riverine ecosystems. As a consequence, ecologically effective eutrophication management of running water systems has to go beyond the control of nutrient emissions or the achievement of limiting threshold values in the receiving waters, but requires the consideration of the nutrient pathways (surface water versus groundwater) and the shifting biological controls from lower to higher order stream ecosystems.}, language = {en} } @article{JaegerVredePerssonetal.2014, author = {J{\"a}ger, Christoph G. and Vrede, T. and Persson, L. and Jansson, M.}, title = {Interactions between metazoans, autotrophs, mixotrophs and bacterioplankton in nutrient-depleted high DOC environments: a long-term experiment}, series = {Freshwater Biology}, volume = {59}, journal = {Freshwater Biology}, number = {8}, pages = {1596 -- 1607}, year = {2014}, abstract = {1. Humic lakes with a high external supply of DOC and low input of nutrients can often support a high biomass of metazoan zooplankton. In such lakes, autotrophic algae compete with bacteria for inorganic nutrients, but bacteria support mixotrophic growth. Consequently, planktonic communities are often dominated by mixotrophic flagellates, while obligate autotrophic phytoplankton occurs in low numbers for extended periods. 2. To test the importance of autotrophic phytoplankton and mixotrophic flagellates as food resources for metazoan grazers and, in turn, the feedback effects of grazers on basal food-web interactions, we conducted a long-term experiment where we simulated abiotic resource relationships of humic lakes (high DOC [glucose] and low P input). We examined the population dynamics of Daphnia galeata when inoculated in systems with autotrophic algae only, mixotrophic algae only and a mixture of autotrophic and mixotrophic algae, and how the systems changed after the inoculation of Daphnia. All combinations were run at high- and low-light conditions to analyse the effects of light on food quantity and quality. 3. Daphnia grew to high densities only when mixotrophs were present at high-light conditions and showed no or only weak growth at low-light conditions or with autotrophs as the only food source. 4. Autotrophic algae and bacteria showed a strong competition for nutrients. Autotrophic algae were released from competition for nutrients after Daphnia grazed on bacteria, which led to a probable change of the bacteria community to less edible but less competitive taxa. As a consequence, there was a mutualistic interaction between autotrophs and mixotrophs before Daphnia were introduced which turned into competition after Daphnia inoculation. 5. We suggest that mixotrophic flagellates can be a critical resource for cladocerans and thereby also have a cascading effect on higher trophic levels, and cladocerans, in turn, have important indirect effects on basal planktonic food webs; hence, both might affect whole lake ecosystems.}, language = {en} } @article{JaegerDiehl2014, author = {J{\"a}ger, Christoph G. and Diehl, S.}, title = {Resource competition across habitat boundaries: asymmetric interactions between benthic and pelagic producers}, series = {Ecological Monographs}, volume = {84}, journal = {Ecological Monographs}, number = {2}, pages = {287 -- 302}, year = {2014}, abstract = {In shallow aquatic systems, benthic and pelagic primary producers typically compete for light and nutrients along opposing vertical supply axes: pelagic algae shade the benthic habitat; conversely, benthic algae intercept the nutrient flux from the sediment to the pelagic habitat. We present a general framework for analyzing such spatially asymmetric resource competition across habitat boundaries using a mechanistic, dynamical model. We visualize the mechanisms determining the outcome of these cross-habitat interactions using zero-net-growth isoclines, resource supply points, and resource consumption vectors. In extensive invasion analyses, we characterize the abiotic and competitive persistence boundaries of pelagic and benthic primary producers, which are set by environmental factors determining nutrient and light supply and are modified by resource use by the competitor in the respective other habitat. We note several qualitative differences between cross-habitat and "classical" within-habitat resource competition. First, coexistence of cross-habitat competitors is facilitated by, but does not require niche differentiation with respect to, the utilization of resources. Because each species has a competitive edge for the resource that is supplied from "its" side of the system, a competitor that is inferior in utilizing both resources can sometimes coexist with, or even exclude, a superior competitor. Second, increasing the external supply of one resource (the nutrient) may initially favor both competitors, until a breakpoint is reached where the benthic producer goes abruptly extinct. Finally, whether a given pair of cross-habitat competitors coexist or shows alternative states may depend on the environment. Specifically, benthic and pelagic algae may coexist at low nutrient and light supply but produce alternative states at high nutrient and light supply. Alternative states are, in turn, promoted by any algal trait combination that increases the spatial asymmetry in resource consumption, i.e., leads to a higher nutrient consumption in the benthic habitat and/or a higher light consumption in the pelagic habitat. In a first empirical application, we show that predictions from our model give a good fit to published data on benthic and pelagic primary production in temperate and arctic lakes spanning a broad range of nutrient environments.}, language = {en} } @article{KamjunkeBuettnerJaegeretal.2013, author = {Kamjunke, N. and B{\"u}ttner, O. and J{\"a}ger, Christoph G. and Marcus, H. and von T{\"u}mpling, W. and Halbedel, S. and Norf, H. and Brauns, M. and Baborowski, M. and Wild, R. and Borchardt, D. and Weitere, M.}, title = {Biogeochemical patterns in a river network along a land use gradient}, series = {Environmental Monitoring and Assessment}, volume = {185}, journal = {Environmental Monitoring and Assessment}, number = {11}, pages = {9221 -- 9236}, year = {2013}, abstract = {The Bode catchment (Germany) shows strong land use gradients from forested parts of the National Park (23 \% of total land cover) to agricultural (70 \%) and urbanised areas (7 \%). It is part of the Terrestrial Environmental Observatories of the German Helmholtz association. We performed a biogeochemical analysis of the entire river network. Surface water was sampled at 21 headwaters and at ten downstream sites, before (in early spring) and during the growing season (in late summer). Many parameters showed lower concentrations in headwaters than in downstream reaches, among them nutrients (ammonium, nitrate and phosphorus), dissolved copper and seston dry mass. Nitrate and phosphorus concentrations were positively related to the proportion of agricultural area within the catchment. Punctual anthropogenic loads affected some parameters such as chloride and arsenic. Chlorophyll a concentration and total phosphorus in surface waters were positively related. The concentration of dissolved organic carbon (DOC) was higher in summer than in spring, whereas the molecular size of DOC was lower in summer. The specific UV absorption at 254 nm, indicating the content of humic substances, was higher in headwaters than in downstream reaches and was positively related to the proportion of forest within the catchment. CO2 oversaturation of the water was higher downstream compared with headwaters and was higher in summer than in spring. It was correlated negatively with oxygen saturation and positively with DOC concentration but negatively with DOC quality (molecular size and humic content). A principle component analysis clearly separated the effects of site (44 \%) and season (15 \%), demonstrating the strong effect of land use on biogeochemical parameters.}, language = {en} } @article{JaegerDiehlEmans2010, author = {J{\"a}ger, Christoph G. and Diehl, S. and Emans, M.}, title = {Physical determinants of phytoplankton production, algal stoichiometry, and vertical nutrient fluxes}, series = {The American Naturalist}, volume = {175}, journal = {The American Naturalist}, number = {4}, pages = {E91 -- E104}, year = {2010}, abstract = {Most phytoplankters face opposing vertical gradients in light versus nutrient supplies but have limited capacities for vertical habitat choice. We therefore explored a dynamical model of negatively buoyant algae inhabiting a one-dimensional water column to ask how water column depth and turbulence constrain total (areal) phytoplankton biomass. We show that the population persistence boundaries in water column depth-turbulence space are set by sinking losses and light limitation but that nutrients are most limiting to total biomass in water columns that are neither too shallow or too weakly mixed (where sinking losses prevail) nor too deep and turbulent (where light limitation prevails). In shallow waters, the most strongly limiting process is nutrient influx to the bottom of the water column (e.g., from sediments). In deep waters, the most strongly limiting process is turbulent upward transport of nutrients to the photic zone. Consequently, the highest total biomasses are attained in turbulent waters at intermediate water column depths and in deep waters at intermediate turbulences. These patterns are insensitive to the assumption of fixed versus flexible algal carbon-to-nutrient stoichiometry, and they arise irrespective of whether the water column is a surface layer above a deep water compartment or has direct contact with sediments.}, language = {en} } @article{JaegerDiehlSchmidt2008, author = {J{\"a}ger, Christoph G. and Diehl, S. and Schmidt, G. M.}, title = {Influence of water-column depth and mixing intensity on phytoplankton biomass and functional community composition}, series = {Limnology and Oceanography}, volume = {53}, journal = {Limnology and Oceanography}, number = {6}, pages = {2361 -- 2373}, year = {2008}, abstract = {We independently manipulated mixing intensity (strong artificial mixing vs. background turbulence) and water-column depth (2 m, 4 m, 8 m, and 12 m) in order to explore their separate and combined effects in a field enclosure experiment. To accentuate the vertical light gradient, enclosures had black walls, resulting in a euphotic depth of only 3.7 m. All enclosures were placed in a well-mixed water bath to equalize temperature across treatments. Phytoplankton responded to an initial phosphorus pulse with a transient increase in biomass, which was highest in the shallowest, least light-limited water columns where dissolved mineral phosphorus subsequently became strongly limiting. As a consequence, the depth-averaged mineral phosphorus concentration increased and the seston carbon (C) : phosphorous (P) ratio decreased with increasing water-column depth. Low turbulence enclosures became quickly dominated by motile taxa (flagellates) in the upper water column, whereas mixed enclosures became gradually dominated by pennate diatoms, which resulted in higher average sedimentation rates in the mixed enclosures over the 35-d experimental period. Low turbulence enclosures showed pronounced vertical structure in water columns >4 m, where diversity was higher than in mixed enclosures, suggesting vertical niche partitioning. This interpretation is supported by a primary production assay, where phytoplankton originating from different water depths in low-turbulence treatments had the relatively highest primary productivity when incubated at their respective depths of origin.}, language = {en} } @article{JaegerDiehlMatauscheketal.2008, author = {J{\"a}ger, Christoph G. and Diehl, S. and Matauschek, C. and Klausmeier, C. A. and Stibor, H.}, title = {Transient dynamics of pelagic producer-grazer systems in a gradient of nutrients and mixing depths}, series = {Ecology}, volume = {89}, journal = {Ecology}, number = {5}, pages = {1272 -- 1286}, year = {2008}, abstract = {Phytoplankton-grazer dynamics are often characterized by long transients relative to the length of the growing season. Using a phytoplankton-grazer model parameterized for Daphnia pulex with either flexible or fixed algal carbon : nutrient stoichiometry, we explored how nutrient and light supply (the latter by varying depth of the mixed water column) affect the transient dynamics of the system starting from low densities. The system goes through an initial oscillation across nearly the entire light-nutrient supply space. With flexible (but not with fixed) algal stoichiometry, duration of the initial algal peak, timing and duration of the subsequent grazer peak, and timing of the algal minimum are consistently accelerated by nutrient enrichment but decelerated by light enrichment (decreasing mixing depth) over the range of intermediate to shallow mixing depths. These contrasting effects of nutrient vs. light enrichment are consequences of their opposing influences on food quality (algal nutrient content): algal productivity and food quality are positively related along a nutrient gradient but inversely related along a light gradient. Light enrichment therefore slows down grazer growth relative to algal growth, decelerating oscillatory dynamics; nutrient enrichment has opposite effects. We manipulated nutrient supply and mixing depth in a field enclosure experiment. The experimental results were qualitatively much more consistent with the flexible than with the fixed stoichiometry model. Nutrient enrichment increased Daphnia peak biomass, decreased algal minimum biomass, decreased the seston C:P ratio, and accelerated transient oscillatory dynamics. Light enrichment (decreasing mixing depth) produced the opposite patterns, except that Daphnia peak biomass increased monotonously with light enrichment, too. Thus, while the model predicts the possibility of the "paradox of energy enrichment" (a decrease in grazer biomass with light enrichment) at high light and low nutrient supply, this phenomenon did not occur in our experiment.}, language = {en} } @article{BergerDiehlStiboretal.2007, author = {Berger, S.A. and Diehl, S. and Stibor, H. and Trommer, G. and Ruthestroth, M. and Wild, A. and Weigert, A. and J{\"a}ger, Christoph G. and Striebel, M.}, title = {Water temperature and mixing depth affect timing and magnitude of events during spring succession of the plankton}, series = {Oecologia}, volume = {150}, journal = {Oecologia}, number = {4}, pages = {643 -- 654}, year = {2007}, abstract = {In many lakes, the most conspicuous seasonal events are the phytoplankton spring bloom and the subsequent clear-water phase, a period of low-phytoplankton biomass that is frequently caused by mesozooplankton (Daphnia) grazing. In Central European lakes, the timing of the clear-water phase is linked to large-scale climatic forcing, with warmer winters being followed by an earlier onset of the clear-water phase. Mild winters may favour an early build-up of Daphnia populations, both directly through increased surface temperatures and indirectly by reducing light limitation and enhancing algal production, all being a consequence of earlier thermal stratification. We conducted a field experiment to disentangle the separate impacts of stratification depth (affecting light supply) and temperature on the magnitude and timing of successional events in the plankton. We followed the dynamics of the phytoplankton spring bloom, the clear-water phase and the spring peak in Daphnia abundance in response to our experimental manipulations. Deeper mixing delayed the timing of all spring seasonal events and reduced the magnitudes of the phytoplankton bloom and the subsequent Daphnia peak. Colder temperatures retarded the timing of the clear-water phase and the subsequent Daphnia peak, whereas the timing of the phytoplankton peak was unrelated to temperature. Most effects of mixing depth (light) and temperature manipulations were independent, effects of mixing depth being more prevalent than effects of temperature. Because mixing depth governs both the light climate and the temperature regime in the mixed surface layer, we propose that climate-driven changes in the timing and depth of water column stratification may have far-reaching consequences for plankton dynamics and should receive increased attention.}, language = {en} } @techreport{KarlingerSchemmeKnorretal.2017, author = {Karlinger, Peter and Schemme, Michael and Knorr, Ludwig and Hummel, Sabine}, title = {Verbund zwischen Organoblech und angespritzten Strukturen}, series = {Forschungsbericht 2016 der Hochschule Rosenheim}, journal = {Forschungsbericht 2016 der Hochschule Rosenheim}, pages = {32 -- 33}, year = {2017}, abstract = {Seit {\"u}ber zehn Jahren erforschen Wissenschaftler und Wissenschaftlerinnen der Fachrichtung Kunststofftechnik an der Hochschule Rosenheim Verbindungstechnologien und -mechanismen zwischen endlosverst{\"a}rkten Thermoplasten und angespritzten Funktionsstrukturen. Besonders die Automobilindustrie hat an den neuen M{\"o}glichkeiten im Leichtbau großes Interesse. Im Projekt "OrganoRipp" untersuchte die Hochschule in Kooperation mit zwei Unternehmenspartnern neue Verbundm{\"o}glichkeiten.}, language = {de} }