@inproceedings{HerzLorenzMuscatetal.2024, author = {Herz, Jonas and Lorenz, Katharina and Muscat, Dirk and Str{\"u}bbe, Nicole}, title = {Polymeric core-shell and mono-material fibers for concrete reinforcement}, series = {AIP Conference Proceedings}, volume = {3158}, booktitle = {AIP Conference Proceedings}, number = {1}, organization = {38th International Conference of the Polymer Processing Society (PPS-38)}, doi = {10.1063/5.0204946}, year = {2024}, abstract = {A reinforcement of concrete structures is needed because of the low tensile strength of concrete. Corrosion of the usually used steel reinforcments cause issues during time. Therfore, alternative reinforcements produced from non-corosive materials - like polymer fibers - become more interesting. A polymer fiber has to reach high mechanical properties and a good bonding ability to concrete. Both properties can be influenced by the selection of polymer and the used production process. Two polymers, polypropylene and aliphatic polyketone are tested within this study. First mono-material fibers of each material are produced and tested, later the materials are combined in a core-shell fiber. All fibers are produced by standard extrusion or coextrusion and a later drawing process. The mechanical properties are determined by tensile tests. The calculation of interfacial shear strength from single fiber pull-out tests allows an evaluation of the bonding ability. Additionally, fiber surface before and after pull-out is examined using reflected light microscopy. Contact angle measurements are done to evaluate possible influences of the surface energy and polarity. Density measurements are used to compare weight potential of the different mono-material and core-shell fibers. The results show good mechanical properties for all fiber materials. The interfacial shear strength is ≈ 2-3 times higher for fibers with polyketone compared to the ones with polypropylene at the fibers surface, which can be explained by higher surface energy and polarity of the polyketone compared to polypropylene and different surface deformation during pull-out. Lower densities are reached by fibers containing polypropylene.}, language = {en} } @book{HaglKingZentgraf2023, author = {Hagl, Rainer and King, Frank A. and Zentgraf, Peter}, title = {Ingenieurinformatik}, edition = {2}, publisher = {Carl Hanser Verlag GmbH \& Co. KG}, address = {M{\"u}nchen}, doi = {10.3139/9783446477308}, publisher = {Technische Hochschule Rosenheim}, pages = {410}, year = {2023}, abstract = {Umfassende Programmierkenntnisse werden f{\"u}r Ingenieur:innen immer wichtiger, vor allem im Bereich der Produktentwicklung. Die Autoren erkl{\"a}ren die Grundlagen der Ingenieurinformatik beispielhaft anhand von MATLAB, Simulink und Stateflow. Neben den Grundkenntnissen lernen Leser:innen auch die Vorteile von MATLAB im Vergleich zu anderen Programmiersprachen kennen und anzuwenden. Die dabei vorgestellten Zusammenh{\"a}nge und Prinzipien sind allgemeing{\"u}ltig und lassen sich daher auch problemlos auf andere Programmiersprachen {\"u}bertragen. Konkrete Beispiele und Problemstellungen aus der Ingenieurpraxis werden vorgestellt und L{\"o}sungsans{\"a}tze aufgezeigt. Das Lehrbuch richtet sich an Studierende aller ingenieurwissenschaftlichen Studieng{\"a}nge. Es eignet sich besonders f{\"u}r die Bachelorausbildung in den Studienschwerpunkten Elektro- und Informationstechnik, Mechatronik, Maschinenbau, Automatisierungstechnik sowie Energie- und Geb{\"a}udetechnik. F{\"u}r die zweite Auflage wurde das Lehrbuch umfassend {\"u}berarbeitet und an die aktuellen Programmversionen angepasst. Weitere {\"U}bungen mit L{\"o}sungen sowie Hinweise zur Erstellung eigener Apps und Programmbeispiele stehen auf plus.hanser-fachbuch.de zur Verf{\"u}gung. Der auf dem Cover abgebildete Programmcode und die animierte Rakete wurden im Projekt „water rocket" an der Technischen Hochschule Rosenheim im Jahr 2021 unter der Leitung von Prof. Zentgraf entwickelt. Die Projekt-Unterlagen und der zugeh{\"o}rige Filmbeitrag k{\"o}nnen unter www.th-rosenheim.de/rt-WaterRocket eingesehen werden.}, language = {de} } @book{LukeschKellner2024, author = {Lukesch, Maximilian and Kellner, Florian}, title = {{\"U}bungsbuch Produktionswirtschaft}, edition = {3}, publisher = {Springer Gabler}, address = {Berlin, Heidelberg}, doi = {10.1007/978-3-662-68672-0}, publisher = {Technische Hochschule Rosenheim}, pages = {XVIII, 281}, year = {2024}, abstract = {Dieses Buch bietet Studierenden {\"u}ber 80 {\"U}bungsaufgaben und f{\"u}nf Fallstudien inklusive ausf{\"u}hrlicher L{\"o}sungen zu ausgew{\"a}hlten Themen der Produktionswirtschaft und Industrie 4.0. Jedes Kapitel enth{\"a}lt eine kurze Einleitung sowie zu erreichende Lernziele. Querverweise auf das Lehrbuch „Produktionswirtschaft" von Kellner/Lienland/Lukesch erleichtern das Selbststudium und erm{\"o}glichen eine optimale Pr{\"u}fungsvorbereitung. Die 3. Auflage wurde redigiert und um neue Rechenaufgaben sowie eine weitere Fallstudie zum Themenbereich Industrie 4.0 erg{\"a}nzt.}, language = {de} } @article{KraftQuaysonKellner2024, author = {Kraft, Sarah Katharina and Quayson, Matthew and Kellner, Florian}, title = {Assessing the German Act on Corporate Due Diligence Obligations in Supply Chains: a perspective from the smallholder cocoa farmer}, series = {Frontiers in Sustainability}, volume = {5}, journal = {Frontiers in Sustainability}, doi = {10.3389/frsus.2024.1376619}, year = {2024}, abstract = {This research examines the potential outputs, outcomes, and impacts of the German Act on Corporate Due Diligence Obligations in Supply Chains (LkSG) on the smallholder cocoa farmers in West Africa. The study primarily relies on a literature review and an impact pathway to conduct a systematic analysis to identify the potential effects of the LkSG on smallholder cocoa farmers. The findings indicate that some, but not all of the risks addressed by the LkSG align with those faced by smallholder cocoa farmers and their families. Additionally, the research also reveals weaknesses, particularly in managing environmental risks, which the LkSG does not adequately cover. Our findings show that in the short- and medium-term, the LkSG has no potential effects on smallholder cocoa farmers. Furthermore, the potential positive impacts of the law on smallholder cocoa farmers will take a long time to realize, as the LkSG considers primarily tier-1 suppliers. Companies in Germany might reassess their supply chains to strive for an LkSG-risk-free supply chain, which could in the long term have sustained impacts on smallholder cocoa farmers. However, we recommend a comprehensive risk analysis of the cocoa supply chain to enhance the human rights of cocoa farmers.}, language = {en} } @inproceedings{PueschelCraemerKipfelsbergeretal.2024, author = {P{\"u}schel, M. and Cr{\"a}mer, P. and Kipfelsberger, S. and Versen, M.}, title = {Embedded Sensor System mit EtherCAT zur Bestimmung der Raumluftqualit{\"a}t}, series = {Tagungsband 4. Symposium Elektronik und Systemintegration, Landshut 2024}, booktitle = {Tagungsband 4. Symposium Elektronik und Systemintegration, Landshut 2024}, year = {2024}, language = {de} } @article{WohlschlaegerVersenLoederetal.2024, author = {Wohlschl{\"a}ger, Maximilian and Versen, Martin and L{\"o}der, Martin G. J. and Laforsch, Christian}, title = {Identification of different plastic types and natural materials from terrestrial environments using fluorescence lifetime imaging microscopy.}, series = {Analytical and Bioanalytical Chemistry}, journal = {Analytical and Bioanalytical Chemistry}, doi = {10.1007/s00216-024-05305-w}, year = {2024}, abstract = {Environmental pollution by plastics is a global issue of increasing concern. However, microplastic analysis in complex environmental matrices, such as soil samples, remains an analytical challenge. Destructive mass-based methods for microplastic analysis do not determine plastics' shape and size, which are essential parameters for reliable ecological risk assessment. By contrast, nondestructive particle-based methods produce such data but require elaborate, time-consuming sample preparation. Thus, time-efficient and reliable methods for microplastic analysis are needed. The present study explored the potential of frequency-domain fluorescence lifetime imaging microscopy (FD-FLIM) for rapidly and reliably identifying as well as differentiating plastics and natural materials from terrestrial environments. We investigated the fluorescence spectra of ten natural materials from terrestrial environments, tire wear particles, and eleven different transparent plastic granulates <5 mm to determine the optimal excitation wavelength for identification and differentiation via FD-FLIM under laboratory conditions. Our comparison of different excitation wavelengths showed that 445 nm excitation exhibited the highest fluorescence intensities. 445 nm excitation was also superior for identifying plastic types and distinguishing them from natural materials from terrestrial environments with a high probability using FD-FLIM. We could demonstrate that FD-FLIM analysis has the potential to contribute to a streamlined and time-efficient direct analysis of microplastic contamination. However, further investigations on size-, shape-, color-, and material-type detection limitations are necessary to evaluate if the direct identification of terrestrial environmental samples of relatively low complexity, such as a surface inspection soil, is possible.}, language = {en} } @article{WohlschlaegerVersenLoederetal.2024, author = {Wohlschl{\"a}ger, Maximilian and Versen, Martin and L{\"o}der, Martin G. J. and Laforsch, Christian}, title = {A promising method for fast identification of microplastic particles in environmental samples: A pilot study using fluorescence lifetime imaging microscopy}, series = {Heliyon}, volume = {10}, journal = {Heliyon}, number = {3}, doi = {10.1016/j.heliyon.2024.e25133}, year = {2024}, abstract = {Microplastic pollution of the environment has been extensively studied, with recent studies focusing on the prevalence of microplastics in the environment and their effects on various organisms. Identification methods that simplify the extraction and analysis process to the point where the extraction can be omitted are being investigated, thus enabling the direct identification of microplastic particles. Currently, microplastic samples from environmental matrices can only be identified using time-consuming extraction, sample processing, and analytical methods. Various spectroscopic methods are currently employed, such as micro Fourier-transform infrared, attenuated total reflectance, and micro Raman spectroscopy. However, microplastics in environmental matrices cannot be directly identified using these spectroscopic methods. Investigations using frequency-domain fluorescence lifetime imaging microscopy (FD-FLIM) to identify and differentiate plastics from environmental materials have yielded promising results for directly identifying microplastics in an environmental matrix. Herein, two artificially prepared environmental matrices that included natural soil, grass, wood, and high-density polyethylene were investigated using FD-FLIM. Our first results showed that we successfully identified one plastic type in the two artificially prepared matrices using FD-FLIM. However, further research must be conducted to improve the FD-FLIM method and explore its limitations for directly identifying microplastics in environmental samples.}, language = {en} } @inproceedings{PueschelCraemerKipfelsbergeretal.2024, author = {P{\"u}schel, B. Eng M. and Cr{\"a}mer, Dipl-Ing and Kipfelsberger, S. and Versen, Prof Dr-Ing M.}, title = {Embedded Sensor System mit EtherCAT f{\"u}r Messungen des Raumklimas}, series = {Tagungsband AALE 2024}, booktitle = {Tagungsband AALE 2024}, doi = {10.33968/2024.59}, pages = {291 -- 296}, year = {2024}, language = {de} } @inproceedings{WohlschlaegerLeiterDietlmeieretal.2023, author = {Wohlschl{\"a}ger, Maximilian and Leiter, Nina and Dietlmeier, Maximilian and L{\"o}der, Martin G.J. and Versen, Martin and Laforsch, Christian}, title = {Comparison of Two Classification Methods Trained with FD-FLIM Data to Identify and Distinguish Plastics from Environmental Materials}, series = {2023 International Joint Conference on Neural Networks (IJCNN)}, booktitle = {2023 International Joint Conference on Neural Networks (IJCNN)}, doi = {10.1109/IJCNN54540.2023.10191054}, pages = {1 -- 9}, year = {2023}, abstract = {Previous research on identifying plastic types and differentiating plastics from environmental material is promising by utilizing the specific fluorescence lifetime, but the evaluation still has to be automated. Therefore, an automated Gaussian analysis is developed for evaluating frequency-domain fluorescence lifetime images of plastics and environmental materials. Furthermore, we applied a "Multilayer Perceptron" and "Random Forest Classifier" to the data resulting from the Gaussian analysis of the frequency domain fluorescence lifetime imaging microscopy data. The classification results show high F1-scores, whereby the best "Multilayer Perceptron" and "Random Forest Classifier" achieved an F1-score of 90\%. Thus, identifying and differentiating plastics and environmental materials is possible by applying a "Multilayer Perceptron" or "Random Forest Classifier" to the Gaussian-analyzed imaged fluorescence lifetime data.}, language = {en} } @inproceedings{WohlschlaegerKhanLeiteretal.2023, author = {Wohlschl{\"a}ger, Maximilian and Khan, Yamna and Leiter, Nina and Versen, Martin and L{\"o}der, Martin and Laforsch, Christian}, title = {Development of a BLOB-detection algorithm based on DoG to detect Plastic in an environmental matrix using FD-FLIM}, series = {Optica Sensing Congress 2023 (AIS, FTS, HISE, Sensors, ES)}, booktitle = {Optica Sensing Congress 2023 (AIS, FTS, HISE, Sensors, ES)}, doi = {10.1364/ES.2023.EW4E.4}, year = {2023}, abstract = {The direct identification of plastics in an environmental matrix is heavily researched. We successfully developed a BLOB-detection algorithm based on differences of Gaussians to identify HDPE particles in an artificial environmental matrix using FD-FLIM.}, language = {en} }