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    <id>1101</id>
    <completedYear>2021</completedYear>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>76</pageFirst>
    <pageLast>100</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>2</volume>
    <articleNumber/>
    <type>article</type>
    <publisherName>MDPI</publisherName>
    <publisherPlace>Basel</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>2022-01-04</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Comparison of hydrogen powertrains with the battery powered electric vehicle and investigation of small-scale local hydrogen production using renewable energy</title>
    <abstract language="eng">Climate change is one of the major problems that people face in this century, with fossil fuel combustion engines being huge contributors. Currently, the battery powered electric vehicle is considered the predecessor, while hydrogen vehicles only have an insignificant market share. To evaluate if this is justified, different hydrogen power train technologies are analyzed and compared to the battery powered electric vehicle. Even though most research focuses on the hydrogen fuel cells, it is shown that, despite the lower efficiency, the often-neglected hydrogen combustion engine could be the right solution for transitioning away from fossil fuels. This is mainly due to the lower costs and possibility of the use of existing manufacturing infrastructure. To achieve a similar level of refueling comfort as with the battery powered electric vehicle, the economic and technological aspects of the local small-scale hydrogen production are being investigated. Due to the low efficiency and high prices for the required components, this domestically produced hydrogen cannot compete with hydrogen produced from fossil fuels on a larger scale.</abstract>
    <parentTitle language="eng">Hydrogen</parentTitle>
    <identifier type="issn">2673-4141</identifier>
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    <author>
      <first_name>Michael</first_name>
      <last_name>Handwerker</last_name>
    </author>
    <author>
      <first_name>Jörg</first_name>
      <last_name>Kessler</last_name>
    </author>
    <author>
      <first_name>Hormoz</first_name>
      <last_name>Marzbani</last_name>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>hydrogen combustion engine</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>hydrogen fuel cell</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>small-scale hydrogen production</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>energy storage</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>alternative fuels</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>power-to-hydrogen</value>
    </subject>
    <collection role="institutes" number="15985">Fakultät Maschinenbau</collection>
    <collection role="open_access" number="">open_access</collection>
    <collection role="persons" number="26410">Kessler, Jörg</collection>
    <thesisPublisher>Technische Hochschule Ingolstadt</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-haw/files/1101/hydrogen-02-00005-v2.pdf</file>
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  <doc>
    <id>1310</id>
    <completedYear>2020</completedYear>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>663</pageFirst>
    <pageLast>677</pageLast>
    <pageNumber/>
    <edition/>
    <issue>4</issue>
    <volume>6</volume>
    <articleNumber/>
    <type>article</type>
    <publisherName>Springer Nature</publisherName>
    <publisherPlace>Cham</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>2022-02-18</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Review of mechanical properties of and optimisation methods for continuous fibre‑reinforced thermoplastic parts manufactured by fused deposition modelling</title>
    <abstract language="eng">A new way of manufacturing continuous fibre-reinforced plastics is the embedding of fibres in the filament of a 3D printer. This method could be used in manufacturing composite materials with a thermoplastic matrix containing glass, Kevlar and carbon fibres. This paper provides an overview of research on the mechanical and physical properties of these parts as well as optimisation approaches of additively manufactured thermoplastics. Furthermore, applicable testing and analysis methods and their corresponding standards are included. Several studies, which represent the current state of the art, are reviewed in detail for the analysis of the mechanical performance of different fibre reinforcements. In addition, an overview of different optimisation approaches is given. The ultimate tensile strength of Kevlar and glass fibre-reinforced parts are similar to those of common Aluminium alloys whereas the carbon fibre reinforced parts outperform their aluminium counterparts. Major performance limitations include a poor adhesion between layers as well as a high air void ratio.</abstract>
    <parentTitle language="eng">Progress in Additive Manufacturing</parentTitle>
    <identifier type="issn">2363-9520</identifier>
    <identifier type="urn">urn:nbn:de:bvb:573-13103</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="THI_relatedIdentifier">https://doi.org/10.1007/s40964-021-00187-1</enrichment>
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    <author>
      <first_name>Michael</first_name>
      <last_name>Handwerker</last_name>
    </author>
    <author>
      <first_name>Jörg</first_name>
      <last_name>Kessler</last_name>
    </author>
    <author>
      <first_name>Hormoz</first_name>
      <last_name>Marzbani</last_name>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>fused filament fabrication</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>fused deposition modelling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>continuous fibre</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>thermoplastics</value>
    </subject>
    <collection role="institutes" number="15985">Fakultät Maschinenbau</collection>
    <collection role="open_access" number="">open_access</collection>
    <collection role="persons" number="26410">Kessler, Jörg</collection>
    <thesisPublisher>Technische Hochschule Ingolstadt</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-haw/files/1310/Handwerker2021_ReviewOfMechanicalPropertiesOf.pdf</file>
  </doc>
  <doc>
    <id>5634</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>8</pageNumber>
    <edition/>
    <issue>2</issue>
    <volume>23</volume>
    <articleNumber>e202300021</articleNumber>
    <type>article</type>
    <publisherName>Wiley</publisherName>
    <publisherPlace>Weinheim</publisherPlace>
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    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>2025-02-04</completedDate>
    <publishedDate>--</publishedDate>
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    <title language="eng">Homogenization of plane ring mesh under static loading</title>
    <abstract language="eng">Plane ring meshes can be produced in large dimensions for various applications, for example, in architecture or protective systems. The numerical simulation of all individual rings of ring meshes is very costly, which is why methods to abstract the structure have been sought in the past. In this paper, a method for determining the strain parameters of a representative ring mesh section under in‐plane tensile loads is presented. Methods of rigid body analysis and representative volume elements with periodic boundary conditions are used. Green Lagrangian strain tensors are determined for both an exemplary representative ring mesh section under different tensile load cases and an experimental ring mesh under one load case. The comparison of the Green Lagrangian strain tensors of the ring meshes between numerical simulations and experiments shows a very good agreement.</abstract>
    <parentTitle language="eng">Proceedings in applied mathematics and mechanics: PAMM</parentTitle>
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The numerical simulation of all individual rings of ring meshes is very costly, which is why methods to abstract the structure have been sought in the past. In this paper, a method for determining the strain parameters of a representative ring mesh section\u00a0under in\u2010plane tensile loads is presented. Methods of rigid body analysis and representative volume elements with periodic boundary conditions are used. Green Lagrangian strain tensors are determined for both an exemplary representative ring mesh section\u00a0under different tensile load cases and an experimental ring mesh under one load case. The comparison of the Green Lagrangian strain tensors of the ring meshes between numerical simulations and experiments shows a very good\u00a0agreement.&lt;\/jats:p&gt;","DOI":"10.1002\/pamm.202300021","type":"journal-article","created":{"date-parts":[[2023,8,25]],"date-time":"2023-08-25T10:33:49Z","timestamp":1692959629000},"update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Homogenization of plane ring mesh under static loading"],"prefix":"10.1002","volume":"23","author":[{"ORCID":"http:\/\/orcid.org\/0000-0002-3674-8710","authenticated-orcid":false,"given":"Fabian W.","family":"Dries","sequence":"first","affiliation":[{"name":"Institute of Solid Mechanics Technische Universit\u00e4t Dresden  Dresden Germany"},{"name":"Technische Hochschule Ingolstadt  Ingolstadt Germany"}]},{"given":"Thomas","family":"Wallmersperger","sequence":"additional","affiliation":[{"name":"Institute of Solid Mechanics Technische Universit\u00e4t Dresden  Dresden Germany"}]},{"given":"J\u00f6rg","family":"Kessler","sequence":"additional","affiliation":[{"name":"Technische Hochschule Ingolstadt  Ingolstadt Germany"}]}],"member":"311","published-online":{"date-parts":[[2023,8,25]]},"reference":[{"key":"e_1_2_6_2_1","first-page":"148","volume-title":"Handbuch der Waffenkunde","author":"Boeheim W.","year":"1890"},{"key":"e_1_2_6_3_1","unstructured":"DIN Deutsches Institut f\u00fcr Normung e.V.(2003).EN ISO 13998:2003\u201005: Schutzkleidung \u2010 Sch\u00fcrzen Hosen und Westen zum Schutz gegen Schnitte und Stiche durch Handmesser Beuth Berlin."},{"key":"e_1_2_6_4_1","first-page":"305","volume-title":"Proceedings 32nd Annual Conference of the Association for Computer Aided Design in Architecture","author":"Kock J.","year":"2012"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/bate.201101510"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/bate.201800014"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00193-021-01004-y"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.addma.2016.05.012"},{"key":"e_1_2_6_9_1","volume-title":"Charakterisierung und Anwendung von fl\u00e4chig periodischem Ringgeflecht","author":"Lenk O.","year":"2009"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10704-011-9608-8"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.commatsci.2010.08.031"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.culher.2020.04.010"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.culher.2020.12.002"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00707-022-03393-2"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1097-0207(19960815)39:15&lt;2673::AID-NME972&gt;3.0.CO;2-I"},{"key":"e_1_2_6_16_1","first-page":"162","volume-title":"Proceedings 2000 ICRA Millennium Conference","author":"Stewart D. E.","year":"2000"}],"container-title":["PAMM"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/pamm.202300021","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,11,2]],"date-time":"2023-11-02T11:27:03Z","timestamp":1698924423000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/pamm.202300021"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,8,25]]},"references-count":15,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2023,10]]}},"alternative-id":["10.1002\/pamm.202300021"],"URL":"https:\/\/doi.org\/10.1002\/pamm.202300021","archive":["Portico"],"relation":{},"ISSN":["1617-7061","1617-7061"],"issn-type":[{"value":"1617-7061","type":"print"},{"value":"1617-7061","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,8,25]]},"assertion":[{"value":"2023-06-19","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-06-30","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-08-25","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}</enrichment>
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    <author>
      <first_name>Fabian W.</first_name>
      <last_name>Dries</last_name>
    </author>
    <author>
      <first_name>Thomas</first_name>
      <last_name>Wallmersperger</last_name>
    </author>
    <author>
      <first_name>Jörg</first_name>
      <last_name>Kessler</last_name>
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  <doc>
    <id>3361</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>959</pageFirst>
    <pageLast>973</pageLast>
    <pageNumber/>
    <edition/>
    <issue>3</issue>
    <volume>234</volume>
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    <type>article</type>
    <publisherName>Springer-Verlag GmbH Austria</publisherName>
    <publisherPlace>Wien</publisherPlace>
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    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>2023-04-03</completedDate>
    <publishedDate>--</publishedDate>
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    <title language="eng">Deformation of planar ring mesh under static in-plane tensile loads</title>
    <abstract language="eng">A ring mesh is a large-scale manufacturable structure with versatile applications in architecture and for protective systems. However, the static and dynamic numerical simulation of a large-scale ring mesh is a resource-intensive task due to the many nonlinear contact points between the individual rings. To characterize the rigid body behavior of the ring mesh, in this paper, a representative volume element is loaded under different in-plane directions. The Green-Lagrangian strain tensor components are obtained as a result. An implicit one-step algorithm is used for this dynamic relaxation issue, modified by the use of stiff springs. Static convergence positions of a representative volume element are determined in several multiaxial tensile directions. The obtained deformation parameters can be used to simulate large deformations of large-scaled ring meshes.</abstract>
    <parentTitle language="eng">Acta Mechanica</parentTitle>
    <identifier type="issn">1619-6937</identifier>
    <identifier type="urn">urn:nbn:de:bvb:573-33612</identifier>
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    <enrichment key="opus.source">publish</enrichment>
    <licence>Creative Commons BY 4.0</licence>
    <author>
      <first_name>Fabian W.</first_name>
      <last_name>Dries</last_name>
    </author>
    <author>
      <first_name>Thomas</first_name>
      <last_name>Wallmersperger</last_name>
    </author>
    <author>
      <first_name>Jörg</first_name>
      <last_name>Kessler</last_name>
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    <collection role="institutes" number="15985">Fakultät Maschinenbau</collection>
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    <collection role="persons" number="26410">Kessler, Jörg</collection>
    <thesisPublisher>Technische Hochschule Ingolstadt</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-haw/files/3361/s00707-022-03393-2.pdf</file>
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    <publishedYear>2022</publishedYear>
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    <language>eng</language>
    <pageFirst>99</pageFirst>
    <pageLast>116</pageLast>
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    <edition/>
    <issue>2</issue>
    <volume>8</volume>
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    <type>article</type>
    <publisherName>Springer</publisherName>
    <publisherPlace>Cham</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
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    <title language="eng">Pressure and heat treatment of continuous fibre reinforced thermoplastics produced by fused filament fabrication</title>
    <abstract language="eng">Fused filament fabrication allows for the additive manufacturing of complex geometries without requiring moulds. However, due to large air voids and poor layer adhesion, the mechanical properties of parts manufactured using fused filament fabrication lag behind those of parts manufactured using conventional techniques. A previous study found that the tensile strength and Young’s modulus of such parts could be increased by a heat-treatment process. However, large air voids were still present after annealing. This study, therefore, investigates the influence of a post-pressure-treatment process on the mechanical performance and the air void ratio of continuous glass fibre-reinforced polyamide 6 in the directions perpendicular to the fibres. Without the treatment, Young’s modulus on the plane parallel to the printing bed is eight times higher than Young’s modulus perpendicular to it. Annealing at 1 MPa homogenises the material and leads to a significant increase of both the tensile strength (55 MPa) and Young’s modulus (5 GPa). Increasing the pressure to 3 MPa only slightly increases the mechanical performance, whereas a further increase to 6 MPa causes no significant changes.</abstract>
    <parentTitle language="eng">Progress in Additive Manufacturing</parentTitle>
    <identifier type="issn">2363-9520</identifier>
    <identifier type="issn">2363-9512</identifier>
    <identifier type="urn">urn:nbn:de:bvb:573-31239</identifier>
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    <enrichment key="THI_review">peer-review</enrichment>
    <licence>Creative Commons BY 4.0</licence>
    <author>
      <first_name>Michael</first_name>
      <last_name>Handwerker</last_name>
    </author>
    <author>
      <first_name>Jörg</first_name>
      <last_name>Kessler</last_name>
    </author>
    <author>
      <first_name>Hormoz</first_name>
      <last_name>Marzbani</last_name>
    </author>
    <author>
      <first_name>Ulrich</first_name>
      <last_name>Tetzlaff</last_name>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Pressure treatment</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fused filament fabrication</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Continuous glass fibre</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Polyamide 6</value>
    </subject>
    <collection role="institutes" number="15985">Fakultät Maschinenbau</collection>
    <collection role="open_access" number="">open_access</collection>
    <collection role="persons" number="26484">Tetzlaff, Ulrich</collection>
    <collection role="persons" number="26410">Kessler, Jörg</collection>
    <thesisPublisher>Technische Hochschule Ingolstadt</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-haw/files/3123/s40964-022-00315-5.pdf</file>
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