[{"article_number":"316","article_type":"original","department":[{"_id":"9"},{"_id":"321"},{"_id":"149"}],"user_id":"338","_id":"55743","status":"public","type":"journal_article","doi":"10.3390/jcs8080316","volume":8,"author":[{"first_name":"Hayrettin","id":"75657","full_name":"Irmak, Hayrettin","last_name":"Irmak","orcid":"https://orcid.org/0009-0009-6267-2957"},{"first_name":"Steffen Rainer","last_name":"Tinkloh","id":"72722","full_name":"Tinkloh, Steffen Rainer"},{"first_name":"Thorsten","id":"338","full_name":"Marten, Thorsten","last_name":"Marten","orcid":"0009-0001-6433-7839"},{"first_name":"Thomas","last_name":"Tröster","full_name":"Tröster, Thomas","id":"553"}],"date_updated":"2026-03-23T10:31:09Z","intvolume":"         8","citation":{"chicago":"Irmak, Hayrettin, Steffen Rainer Tinkloh, Thorsten Marten, and Thomas Tröster. “Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure.” <i>Journal of Composites Science</i> 8, no. 8 (2024). <a href=\"https://doi.org/10.3390/jcs8080316\">https://doi.org/10.3390/jcs8080316</a>.","ieee":"H. Irmak, S. R. Tinkloh, T. Marten, and T. Tröster, “Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure,” <i>Journal of Composites Science</i>, vol. 8, no. 8, Art. no. 316, 2024, doi: <a href=\"https://doi.org/10.3390/jcs8080316\">10.3390/jcs8080316</a>.","ama":"Irmak H, Tinkloh SR, Marten T, Tröster T. Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure. <i>Journal of Composites Science</i>. 2024;8(8). doi:<a href=\"https://doi.org/10.3390/jcs8080316\">10.3390/jcs8080316</a>","apa":"Irmak, H., Tinkloh, S. R., Marten, T., &#38; Tröster, T. (2024). Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure. <i>Journal of Composites Science</i>, <i>8</i>(8), Article 316. <a href=\"https://doi.org/10.3390/jcs8080316\">https://doi.org/10.3390/jcs8080316</a>","mla":"Irmak, Hayrettin, et al. “Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure.” <i>Journal of Composites Science</i>, vol. 8, no. 8, 316, MDPI AG, 2024, doi:<a href=\"https://doi.org/10.3390/jcs8080316\">10.3390/jcs8080316</a>.","short":"H. Irmak, S.R. Tinkloh, T. Marten, T. Tröster, Journal of Composites Science 8 (2024).","bibtex":"@article{Irmak_Tinkloh_Marten_Tröster_2024, title={Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure}, volume={8}, DOI={<a href=\"https://doi.org/10.3390/jcs8080316\">10.3390/jcs8080316</a>}, number={8316}, journal={Journal of Composites Science}, publisher={MDPI AG}, author={Irmak, Hayrettin and Tinkloh, Steffen Rainer and Marten, Thorsten and Tröster, Thomas}, year={2024} }"},"publication_identifier":{"issn":["2504-477X"]},"publication_status":"published","language":[{"iso":"eng"}],"keyword":["CFRP","prestressing","fibre metal laminate","interface","prepreg","shear tensile test"],"abstract":[{"lang":"eng","text":"The use of hybrid materials as a combination of fibre-reinforced plastic (FRP) and metal is of great interest in order to meet the increasing demands for sustainability, efficiency, and emission reduction based on the principle of lightweight design. These two components can therefore be joined using the intrinsic joining technique, which is formed by curing the matrix of the FRP component. In this study, for the hybrid joint, unidirectionally pre-impregnated semi-finished products (prepregs) with duromer matrix resin and micro-alloyed HC340LA steel were used. In order to conduct a detailed investigation, the damage mechanisms of intrinsically produced fibre metal laminates (FMLs), a new clamping device, and a novel pressing tool were designed and put into operation. The prepregs were prestressed by applying a preloading force using a specially designed prestressing frame. Hybrid specimens were then produced and subjected to nanoindentation and a shear tensile test. In particular, the effect of the residual stress state by varying the defined prestressing force on the damage mechanisms was studied. The results showed that no fracture patterns occurred in the interface of the specimens without preloading as a result of curing at 120 °C, whereas specimens with preloading failed at the boundary layer in the tensile range. Nevertheless, all specimens cured at 160 °C failed at the boundary layer in the tensile range. Furthermore, it was proven that the force and displacement of the preloaded specimens were promisingly higher than those of the unpreloaded specimens."}],"publication":"Journal of Composites Science","title":"Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure","date_created":"2024-08-23T06:47:27Z","publisher":"MDPI AG","year":"2024","issue":"8","quality_controlled":"1"},{"author":[{"first_name":"Elmar","last_name":"Moritzer","id":"20531","full_name":"Moritzer, Elmar"},{"first_name":"Lisa","id":"82465","full_name":"Tölle, Lisa","last_name":"Tölle"},{"first_name":"C.","full_name":"Greb, C.","last_name":"Greb"},{"first_name":"M.","last_name":"Haag","full_name":"Haag, M."}],"date_created":"2023-11-07T13:33:50Z","date_updated":"2024-03-25T09:20:12Z","doi":"10.3390/jcs7070267","title":"Conceptions and Feasibility Study of Fiber Orientation in the Melt as Part of a Completely Circular Recycling Concept for Fiber-Reinforced Thermoplastics","issue":"7","quality_controlled":"1","publication_identifier":{"issn":["2504-477X"]},"citation":{"apa":"Moritzer, E., Tölle, L., Greb, C., &#38; Haag, M. (2023). Conceptions and Feasibility Study of Fiber Orientation in the Melt as Part of a Completely Circular Recycling Concept for Fiber-Reinforced Thermoplastics. <i>Journal of Composites Science</i>, <i>7</i>, 267. <a href=\"https://doi.org/10.3390/jcs7070267\">https://doi.org/10.3390/jcs7070267</a>","short":"E. Moritzer, L. Tölle, C. Greb, M. Haag, Journal of Composites Science (2023) 267.","bibtex":"@article{Moritzer_Tölle_Greb_Haag_2023, title={Conceptions and Feasibility Study of Fiber Orientation in the Melt as Part of a Completely Circular Recycling Concept for Fiber-Reinforced Thermoplastics}, DOI={<a href=\"https://doi.org/10.3390/jcs7070267\">10.3390/jcs7070267</a>}, number={7}, journal={Journal of Composites Science}, author={Moritzer, Elmar and Tölle, Lisa and Greb, C. and Haag, M.}, year={2023}, pages={267} }","mla":"Moritzer, Elmar, et al. “Conceptions and Feasibility Study of Fiber Orientation in the Melt as Part of a Completely Circular Recycling Concept for Fiber-Reinforced Thermoplastics.” <i>Journal of Composites Science</i>, no. 7, 2023, p. 267, doi:<a href=\"https://doi.org/10.3390/jcs7070267\">10.3390/jcs7070267</a>.","ieee":"E. Moritzer, L. Tölle, C. Greb, and M. Haag, “Conceptions and Feasibility Study of Fiber Orientation in the Melt as Part of a Completely Circular Recycling Concept for Fiber-Reinforced Thermoplastics,” <i>Journal of Composites Science</i>, no. 7, p. 267, 2023, doi: <a href=\"https://doi.org/10.3390/jcs7070267\">10.3390/jcs7070267</a>.","chicago":"Moritzer, Elmar, Lisa Tölle, C. Greb, and M. Haag. “Conceptions and Feasibility Study of Fiber Orientation in the Melt as Part of a Completely Circular Recycling Concept for Fiber-Reinforced Thermoplastics.” <i>Journal of Composites Science</i>, no. 7 (2023): 267. <a href=\"https://doi.org/10.3390/jcs7070267\">https://doi.org/10.3390/jcs7070267</a>.","ama":"Moritzer E, Tölle L, Greb C, Haag M. Conceptions and Feasibility Study of Fiber Orientation in the Melt as Part of a Completely Circular Recycling Concept for Fiber-Reinforced Thermoplastics. <i>Journal of Composites Science</i>. 2023;(7):267. doi:<a href=\"https://doi.org/10.3390/jcs7070267\">10.3390/jcs7070267</a>"},"page":"267","year":"2023","user_id":"44116","department":[{"_id":"9"},{"_id":"367"},{"_id":"321"}],"_id":"48657","language":[{"iso":"eng"}],"type":"journal_article","publication":"Journal of Composites Science","status":"public"},{"type":"journal_article","status":"public","department":[{"_id":"321"},{"_id":"149"},{"_id":"9"}],"user_id":"48039","_id":"55760","article_number":"427","article_type":"original","publication_identifier":{"issn":["2504-477X"]},"publication_status":"published","intvolume":"         7","citation":{"apa":"Freund, J., Lützenkirchen, I., Löbbecke, M., Delp, A., Walther, F., Wu, S., Tröster, T., &#38; Haubrich, J. (2023). Transferability of the Structure–Property Relationships from Laser-Pretreated Metal–Polymer Joints to Aluminum–CFRP Hybrid Joints. <i>Journal of Composites Science</i>, <i>7</i>(10), Article 427. <a href=\"https://doi.org/10.3390/jcs7100427\">https://doi.org/10.3390/jcs7100427</a>","short":"J. Freund, I. Lützenkirchen, M. Löbbecke, A. Delp, F. Walther, S. Wu, T. Tröster, J. Haubrich, Journal of Composites Science 7 (2023).","mla":"Freund, Jonathan, et al. “Transferability of the Structure–Property Relationships from Laser-Pretreated Metal–Polymer Joints to Aluminum–CFRP Hybrid Joints.” <i>Journal of Composites Science</i>, vol. 7, no. 10, 427, MDPI AG, 2023, doi:<a href=\"https://doi.org/10.3390/jcs7100427\">10.3390/jcs7100427</a>.","bibtex":"@article{Freund_Lützenkirchen_Löbbecke_Delp_Walther_Wu_Tröster_Haubrich_2023, title={Transferability of the Structure–Property Relationships from Laser-Pretreated Metal–Polymer Joints to Aluminum–CFRP Hybrid Joints}, volume={7}, DOI={<a href=\"https://doi.org/10.3390/jcs7100427\">10.3390/jcs7100427</a>}, number={10427}, journal={Journal of Composites Science}, publisher={MDPI AG}, author={Freund, Jonathan and Lützenkirchen, Isabel and Löbbecke, Miriam and Delp, Alexander and Walther, Frank and Wu, Shuang and Tröster, Thomas and Haubrich, Jan}, year={2023} }","ieee":"J. Freund <i>et al.</i>, “Transferability of the Structure–Property Relationships from Laser-Pretreated Metal–Polymer Joints to Aluminum–CFRP Hybrid Joints,” <i>Journal of Composites Science</i>, vol. 7, no. 10, Art. no. 427, 2023, doi: <a href=\"https://doi.org/10.3390/jcs7100427\">10.3390/jcs7100427</a>.","chicago":"Freund, Jonathan, Isabel Lützenkirchen, Miriam Löbbecke, Alexander Delp, Frank Walther, Shuang Wu, Thomas Tröster, and Jan Haubrich. “Transferability of the Structure–Property Relationships from Laser-Pretreated Metal–Polymer Joints to Aluminum–CFRP Hybrid Joints.” <i>Journal of Composites Science</i> 7, no. 10 (2023). <a href=\"https://doi.org/10.3390/jcs7100427\">https://doi.org/10.3390/jcs7100427</a>.","ama":"Freund J, Lützenkirchen I, Löbbecke M, et al. Transferability of the Structure–Property Relationships from Laser-Pretreated Metal–Polymer Joints to Aluminum–CFRP Hybrid Joints. <i>Journal of Composites Science</i>. 2023;7(10). doi:<a href=\"https://doi.org/10.3390/jcs7100427\">10.3390/jcs7100427</a>"},"volume":7,"author":[{"full_name":"Freund, Jonathan","last_name":"Freund","first_name":"Jonathan"},{"first_name":"Isabel","last_name":"Lützenkirchen","full_name":"Lützenkirchen, Isabel"},{"first_name":"Miriam","last_name":"Löbbecke","full_name":"Löbbecke, Miriam"},{"first_name":"Alexander","last_name":"Delp","full_name":"Delp, Alexander"},{"full_name":"Walther, Frank","last_name":"Walther","first_name":"Frank"},{"first_name":"Shuang","orcid":"0000-0001-8645-9952","last_name":"Wu","full_name":"Wu, Shuang","id":"48039"},{"id":"553","full_name":"Tröster, Thomas","last_name":"Tröster","first_name":"Thomas"},{"first_name":"Jan","last_name":"Haubrich","full_name":"Haubrich, Jan"}],"date_updated":"2025-01-30T12:31:55Z","doi":"10.3390/jcs7100427","publication":"Journal of Composites Science","abstract":[{"lang":"eng","text":"The transferability of structure–property relationships for laser-pretreated metal adhesive joints to laser-pretreated metal–carbon-fiber-reinforced plastic (CFRP) bonds was investigated. Single-lap shear tests were performed on hybrid AW 6082-T6–CFRP specimens pretreated with the same pulsed laser surface parameter sets on the metal surface as previously tested, AW 6082-T6–E320 metal adhesive joints. The fracture surfaces were characterized to determine the type of failure and elucidate differences and commonalities in the link between surface structures and single-lap shear strengths. Digital image analyses of the hybrid specimens’ fractured surfaces were used to quantify remaining CFRP fragments on the metallic joint side. The results indicate that high surface enlargements and the presence of undercut structures lead to single-lap shear strengths exceeding 40 MPa and 35 MPa for unaged and aged hybrid specimens, respectively. Whereas for the metal–polymer joints, the trend from high strength to weakly bonded specimens is largely continuous with the degree of surface structuring, hybrid metal–CFRP joints exhibit a drastic drop in joint performance after aging if the laser-generated surface structures are less pronounced with low surface enlargements and crater depths. Surface features and hydrothermal aging determine whether the specimens fail cohesively or adhesively.</jats:p>"}],"language":[{"iso":"eng"}],"issue":"10","quality_controlled":"1","year":"2023","date_created":"2024-08-26T10:45:05Z","publisher":"MDPI AG","title":"Transferability of the Structure–Property Relationships from Laser-Pretreated Metal–Polymer Joints to Aluminum–CFRP Hybrid Joints"},{"publisher":"MDPI AG","date_created":"2022-12-06T20:42:38Z","title":"A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters","issue":"10","year":"2022","keyword":["Engineering (miscellaneous)","Ceramics and Composites"],"language":[{"iso":"eng"}],"publication":"Journal of Composites Science","abstract":[{"lang":"eng","text":"<jats:p>The 3D shear deformation and failure behaviour of a glass fibre reinforced polypropylene in a shear strain rate range of γ˙=2.2×10−4 to 3.4 1s is investigated. An Iosipescu testing setup on a servo-hydraulic high speed testing unit is used to experimentally characterise the in-plane and out-of-plane behaviour utilising three specimen configurations (12-, 13- and 31-direction). The experimental procedure as well as the testing results are presented and discussed. The measured shear stress–shear strain relations indicate a highly nonlinear behaviour and a distinct rate dependency. Two methods are investigated to derive according material characteristics: a classical engineering approach based on moduli and strengths and a data driven approach based on the curve progression. In all cases a Johnson–Cook based formulation is used to describe rate dependency. The analysis methodologies as well as the derived model parameters are described and discussed in detail. It is shown that a phenomenologically enhanced regression can be used to obtain material characteristics for a generalising constitutive model based on the data driven approach.</jats:p>"}],"oa":"1","date_updated":"2023-01-02T11:06:15Z","volume":6,"author":[{"first_name":"Johannes","last_name":"Gerritzen","full_name":"Gerritzen, Johannes"},{"first_name":"Andreas","last_name":"Hornig","full_name":"Hornig, Andreas"},{"last_name":"Gröger","full_name":"Gröger, Benjamin","first_name":"Benjamin"},{"first_name":"Maik","full_name":"Gude, Maik","last_name":"Gude"}],"doi":"10.3390/jcs6100318","main_file_link":[{"url":"https://www.mdpi.com/2504-477X/6/10/318","open_access":"1"}],"publication_identifier":{"issn":["2504-477X"]},"publication_status":"published","intvolume":"         6","citation":{"apa":"Gerritzen, J., Hornig, A., Gröger, B., &#38; Gude, M. (2022). A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters. <i>Journal of Composites Science</i>, <i>6</i>(10), Article 318. <a href=\"https://doi.org/10.3390/jcs6100318\">https://doi.org/10.3390/jcs6100318</a>","short":"J. Gerritzen, A. Hornig, B. Gröger, M. Gude, Journal of Composites Science 6 (2022).","mla":"Gerritzen, Johannes, et al. “A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters.” <i>Journal of Composites Science</i>, vol. 6, no. 10, 318, MDPI AG, 2022, doi:<a href=\"https://doi.org/10.3390/jcs6100318\">10.3390/jcs6100318</a>.","bibtex":"@article{Gerritzen_Hornig_Gröger_Gude_2022, title={A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters}, volume={6}, DOI={<a href=\"https://doi.org/10.3390/jcs6100318\">10.3390/jcs6100318</a>}, number={10318}, journal={Journal of Composites Science}, publisher={MDPI AG}, author={Gerritzen, Johannes and Hornig, Andreas and Gröger, Benjamin and Gude, Maik}, year={2022} }","ama":"Gerritzen J, Hornig A, Gröger B, Gude M. A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters. <i>Journal of Composites Science</i>. 2022;6(10). doi:<a href=\"https://doi.org/10.3390/jcs6100318\">10.3390/jcs6100318</a>","chicago":"Gerritzen, Johannes, Andreas Hornig, Benjamin Gröger, and Maik Gude. “A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters.” <i>Journal of Composites Science</i> 6, no. 10 (2022). <a href=\"https://doi.org/10.3390/jcs6100318\">https://doi.org/10.3390/jcs6100318</a>.","ieee":"J. Gerritzen, A. Hornig, B. Gröger, and M. Gude, “A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters,” <i>Journal of Composites Science</i>, vol. 6, no. 10, Art. no. 318, 2022, doi: <a href=\"https://doi.org/10.3390/jcs6100318\">10.3390/jcs6100318</a>."},"_id":"34256","project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"name":"TRR 285 – A03: TRR 285 - Subproject A03","_id":"137"}],"department":[{"_id":"630"}],"user_id":"14931","article_number":"318","type":"journal_article","status":"public"},{"doi":"10.3390/jcs6100321","main_file_link":[{"open_access":"1"}],"volume":6,"author":[{"id":"20531","full_name":"Moritzer, Elmar","last_name":"Moritzer","first_name":"Elmar"},{"orcid":"0000-0002-7651-7028","last_name":"Flachmann","id":"38212","full_name":"Flachmann, Felix","first_name":"Felix"},{"first_name":"Maximilian","full_name":"Richters, Maximilian","id":"38221","last_name":"Richters"},{"last_name":"Neugebauer","full_name":"Neugebauer, Marcel","first_name":"Marcel"}],"oa":"1","date_updated":"2023-04-26T13:40:41Z","intvolume":"         6","citation":{"ieee":"E. Moritzer, F. Flachmann, M. Richters, and M. Neugebauer, “Analysis of the Segregation Phenomena of Wood Fiber Reinforced Plastics,” <i>Journal of Composites Science</i>, vol. 6, no. 10, Art. no. 321, 2022, doi: <a href=\"https://doi.org/10.3390/jcs6100321\">10.3390/jcs6100321</a>.","chicago":"Moritzer, Elmar, Felix Flachmann, Maximilian Richters, and Marcel Neugebauer. “Analysis of the Segregation Phenomena of Wood Fiber Reinforced Plastics.” <i>Journal of Composites Science</i> 6, no. 10 (2022). <a href=\"https://doi.org/10.3390/jcs6100321\">https://doi.org/10.3390/jcs6100321</a>.","ama":"Moritzer E, Flachmann F, Richters M, Neugebauer M. Analysis of the Segregation Phenomena of Wood Fiber Reinforced Plastics. <i>Journal of Composites Science</i>. 2022;6(10). doi:<a href=\"https://doi.org/10.3390/jcs6100321\">10.3390/jcs6100321</a>","apa":"Moritzer, E., Flachmann, F., Richters, M., &#38; Neugebauer, M. (2022). Analysis of the Segregation Phenomena of Wood Fiber Reinforced Plastics. <i>Journal of Composites Science</i>, <i>6</i>(10), Article 321. <a href=\"https://doi.org/10.3390/jcs6100321\">https://doi.org/10.3390/jcs6100321</a>","short":"E. Moritzer, F. Flachmann, M. Richters, M. Neugebauer, Journal of Composites Science 6 (2022).","bibtex":"@article{Moritzer_Flachmann_Richters_Neugebauer_2022, title={Analysis of the Segregation Phenomena of Wood Fiber Reinforced Plastics}, volume={6}, DOI={<a href=\"https://doi.org/10.3390/jcs6100321\">10.3390/jcs6100321</a>}, number={10321}, journal={Journal of Composites Science}, publisher={MDPI AG}, author={Moritzer, Elmar and Flachmann, Felix and Richters, Maximilian and Neugebauer, Marcel}, year={2022} }","mla":"Moritzer, Elmar, et al. “Analysis of the Segregation Phenomena of Wood Fiber Reinforced Plastics.” <i>Journal of Composites Science</i>, vol. 6, no. 10, 321, MDPI AG, 2022, doi:<a href=\"https://doi.org/10.3390/jcs6100321\">10.3390/jcs6100321</a>."},"publication_identifier":{"issn":["2504-477X"]},"publication_status":"published","article_number":"321","department":[{"_id":"321"},{"_id":"9"},{"_id":"367"},{"_id":"147"}],"user_id":"38212","_id":"33856","status":"public","type":"journal_article","title":"Analysis of the Segregation Phenomena of Wood Fiber Reinforced Plastics","date_created":"2022-10-21T05:57:03Z","publisher":"MDPI AG","year":"2022","issue":"10","quality_controlled":"1","language":[{"iso":"eng"}],"keyword":["Engineering (miscellaneous)","Ceramics and Composites"],"abstract":[{"text":"<jats:p>Wood–plastic composites (WPC) are enjoying a steady increase in popularity. In addition to the extrusion of decking boards, the material is also used increasingly in injection molding. Depending on the formulation, geometry and process parameters, WPC tends to exhibit irregular filling behavior, similar to the processing of thermosets. In this work, the influence of matrix material and wood fiber content on the flow, mold filling and segregation behavior of WPC is analyzed. For this purpose, investigations were carried out on a flow spiral and a sheet cavity. WPC based on thermoplastic polyurethane (TPU) achieves significantly higher flow path lengths at a wood mass content of 30% than polypropylene (PP)-based WPC. The opposite behavior occurs at higher wood contents due to the different shear thinning behavior. Slightly decreased wood contents could be observed at the beginning of the flow path and greatly increased wood contents at the end of the flow path, compared to the starting material. When using the plate cavity, flow anomalies in the form of free jets occur as a function of the wood content, with TPU exhibiting the more critical behavior. The flow front is frayed, but in contrast to the flow spiral, no significant wood accumulation could be detected due to the shorter flow path lengths.</jats:p>","lang":"eng"}],"publication":"Journal of Composites Science"},{"language":[{"iso":"eng"}],"keyword":["Engineering (miscellaneous)","Ceramics and Composites"],"abstract":[{"lang":"eng","text":"<jats:p>Carbon fiber reinforced plastics (CFRPs) gained high interest in industrial applications because of their excellent strength and low specific weight. The stacking sequence of the unidirectional plies forming a CFRP laminate, and their thicknesses, primarily determine the mechanical performance. However, during manufacturing, defects, e.g., pores and residual stresses, are induced, both affecting the mechanical properties. The objective of the present work is to accurately measure residual stresses in CFRPs as well as to investigate the effects of stacking sequence, overall laminate thickness, and the presence of pores on the residual stress state. Residual stresses were measured through the incremental hole-drilling method (HDM). Adequate procedures have been applied to evaluate the residual stresses for orthotropic materials, including calculating the calibration coefficients through finite element analysis (FEA) based on stacking sequence, laminate thickness and mechanical properties. Using optical microscopy (OM) and computed tomography (CT), profound insights into the cross-sectional and three-dimensional microstructure, e.g., location and shape of process-induced pores, were obtained. This microstructural information allowed for a comprehensive understanding of the experimentally determined strain and stress results, particularly at the transition zone between the individual plies. The effect of pores on residual stresses was investigated by considering pores to calculate the calibration coefficients at a depth of 0.06 mm to 0.12 mm in the model and utilizing these results for residual stress evaluation. A maximum difference of 46% in stress between defect-free and porous material sample conditions was observed at a hole depth of 0.65 mm. The significance of employing correctly calculated coefficients for the residual stress evaluation is highlighted by mechanical validation tests.</jats:p>"}],"publication":"Journal of Composites Science","title":"Experimental Analysis of Residual Stresses in CFRPs through Hole-Drilling Method: The Role of Stacking Sequence, Thickness, and Defects","date_created":"2022-05-30T07:04:34Z","publisher":"MDPI AG","year":"2022","issue":"5","quality_controlled":"1","funded_apc":"1","article_number":"138","department":[{"_id":"149"},{"_id":"321"}],"user_id":"72722","_id":"31496","status":"public","type":"journal_article","doi":"10.3390/jcs6050138","volume":6,"author":[{"first_name":"Tao","full_name":"Wu, Tao","last_name":"Wu"},{"first_name":"Roland","full_name":"Kruse, Roland","last_name":"Kruse"},{"last_name":"Tinkloh","id":"72722","full_name":"Tinkloh, Steffen Rainer","first_name":"Steffen Rainer"},{"last_name":"Tröster","id":"553","full_name":"Tröster, Thomas","first_name":"Thomas"},{"first_name":"Wolfgang","last_name":"Zinn","full_name":"Zinn, Wolfgang"},{"first_name":"Christian","last_name":"Lauhoff","full_name":"Lauhoff, Christian"},{"full_name":"Niendorf, Thomas","last_name":"Niendorf","first_name":"Thomas"}],"date_updated":"2023-04-28T11:31:42Z","intvolume":"         6","citation":{"apa":"Wu, T., Kruse, R., Tinkloh, S. R., Tröster, T., Zinn, W., Lauhoff, C., &#38; Niendorf, T. (2022). Experimental Analysis of Residual Stresses in CFRPs through Hole-Drilling Method: The Role of Stacking Sequence, Thickness, and Defects. <i>Journal of Composites Science</i>, <i>6</i>(5), Article 138. <a href=\"https://doi.org/10.3390/jcs6050138\">https://doi.org/10.3390/jcs6050138</a>","bibtex":"@article{Wu_Kruse_Tinkloh_Tröster_Zinn_Lauhoff_Niendorf_2022, title={Experimental Analysis of Residual Stresses in CFRPs through Hole-Drilling Method: The Role of Stacking Sequence, Thickness, and Defects}, volume={6}, DOI={<a href=\"https://doi.org/10.3390/jcs6050138\">10.3390/jcs6050138</a>}, number={5138}, journal={Journal of Composites Science}, publisher={MDPI AG}, author={Wu, Tao and Kruse, Roland and Tinkloh, Steffen Rainer and Tröster, Thomas and Zinn, Wolfgang and Lauhoff, Christian and Niendorf, Thomas}, year={2022} }","mla":"Wu, Tao, et al. “Experimental Analysis of Residual Stresses in CFRPs through Hole-Drilling Method: The Role of Stacking Sequence, Thickness, and Defects.” <i>Journal of Composites Science</i>, vol. 6, no. 5, 138, MDPI AG, 2022, doi:<a href=\"https://doi.org/10.3390/jcs6050138\">10.3390/jcs6050138</a>.","short":"T. Wu, R. Kruse, S.R. Tinkloh, T. Tröster, W. Zinn, C. Lauhoff, T. Niendorf, Journal of Composites Science 6 (2022).","chicago":"Wu, Tao, Roland Kruse, Steffen Rainer Tinkloh, Thomas Tröster, Wolfgang Zinn, Christian Lauhoff, and Thomas Niendorf. “Experimental Analysis of Residual Stresses in CFRPs through Hole-Drilling Method: The Role of Stacking Sequence, Thickness, and Defects.” <i>Journal of Composites Science</i> 6, no. 5 (2022). <a href=\"https://doi.org/10.3390/jcs6050138\">https://doi.org/10.3390/jcs6050138</a>.","ieee":"T. Wu <i>et al.</i>, “Experimental Analysis of Residual Stresses in CFRPs through Hole-Drilling Method: The Role of Stacking Sequence, Thickness, and Defects,” <i>Journal of Composites Science</i>, vol. 6, no. 5, Art. no. 138, 2022, doi: <a href=\"https://doi.org/10.3390/jcs6050138\">10.3390/jcs6050138</a>.","ama":"Wu T, Kruse R, Tinkloh SR, et al. Experimental Analysis of Residual Stresses in CFRPs through Hole-Drilling Method: The Role of Stacking Sequence, Thickness, and Defects. <i>Journal of Composites Science</i>. 2022;6(5). doi:<a href=\"https://doi.org/10.3390/jcs6050138\">10.3390/jcs6050138</a>"},"publication_identifier":{"issn":["2504-477X"]},"publication_status":"published"},{"article_number":"318","article_type":"original","language":[{"iso":"eng"}],"project":[{"_id":"137","name":"TRR 285 - Subproject A03"},{"_id":"131","name":"TRR 285 - Project Area A"},{"_id":"130","name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"}],"_id":"63829","user_id":"105344","abstract":[{"text":"<jats:p>The 3D shear deformation and failure behaviour of a glass fibre reinforced polypropylene in a shear strain rate range of γ˙=2.2×10−4 to 3.4 1s is investigated. An Iosipescu testing setup on a servo-hydraulic high speed testing unit is used to experimentally characterise the in-plane and out-of-plane behaviour utilising three specimen configurations (12-, 13- and 31-direction). The experimental procedure as well as the testing results are presented and discussed. The measured shear stress–shear strain relations indicate a highly nonlinear behaviour and a distinct rate dependency. Two methods are investigated to derive according material characteristics: a classical engineering approach based on moduli and strengths and a data driven approach based on the curve progression. In all cases a Johnson–Cook based formulation is used to describe rate dependency. The analysis methodologies as well as the derived model parameters are described and discussed in detail. It is shown that a phenomenologically enhanced regression can be used to obtain material characteristics for a generalising constitutive model based on the data driven approach.</jats:p>","lang":"eng"}],"status":"public","type":"journal_article","publication":"Journal of Composites Science","title":"A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters","doi":"10.3390/jcs6100318","publisher":"MDPI AG","date_updated":"2026-02-27T06:47:18Z","date_created":"2026-02-02T08:41:00Z","author":[{"first_name":"Johannes","full_name":"Gerritzen, Johannes","id":"105344","last_name":"Gerritzen","orcid":"0000-0002-0169-8602"},{"full_name":"Hornig, Andreas","last_name":"Hornig","first_name":"Andreas"},{"full_name":"Gröger, Benjamin","last_name":"Gröger","first_name":"Benjamin"},{"first_name":"Maik","last_name":"Gude","full_name":"Gude, Maik"}],"volume":6,"year":"2022","citation":{"ieee":"J. Gerritzen, A. Hornig, B. Gröger, and M. Gude, “A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters,” <i>Journal of Composites Science</i>, vol. 6, no. 10, Art. no. 318, 2022, doi: <a href=\"https://doi.org/10.3390/jcs6100318\">10.3390/jcs6100318</a>.","chicago":"Gerritzen, Johannes, Andreas Hornig, Benjamin Gröger, and Maik Gude. “A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters.” <i>Journal of Composites Science</i> 6, no. 10 (2022). <a href=\"https://doi.org/10.3390/jcs6100318\">https://doi.org/10.3390/jcs6100318</a>.","bibtex":"@article{Gerritzen_Hornig_Gröger_Gude_2022, title={A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters}, volume={6}, DOI={<a href=\"https://doi.org/10.3390/jcs6100318\">10.3390/jcs6100318</a>}, number={10318}, journal={Journal of Composites Science}, publisher={MDPI AG}, author={Gerritzen, Johannes and Hornig, Andreas and Gröger, Benjamin and Gude, Maik}, year={2022} }","short":"J. Gerritzen, A. Hornig, B. Gröger, M. Gude, Journal of Composites Science 6 (2022).","mla":"Gerritzen, Johannes, et al. “A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters.” <i>Journal of Composites Science</i>, vol. 6, no. 10, 318, MDPI AG, 2022, doi:<a href=\"https://doi.org/10.3390/jcs6100318\">10.3390/jcs6100318</a>.","apa":"Gerritzen, J., Hornig, A., Gröger, B., &#38; Gude, M. (2022). A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters. <i>Journal of Composites Science</i>, <i>6</i>(10), Article 318. <a href=\"https://doi.org/10.3390/jcs6100318\">https://doi.org/10.3390/jcs6100318</a>","ama":"Gerritzen J, Hornig A, Gröger B, Gude M. A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters. <i>Journal of Composites Science</i>. 2022;6(10). doi:<a href=\"https://doi.org/10.3390/jcs6100318\">10.3390/jcs6100318</a>"},"intvolume":"         6","publication_status":"published","publication_identifier":{"issn":["2504-477X"]},"issue":"10"},{"language":[{"iso":"eng"}],"keyword":["Engineering (miscellaneous)","Ceramics and Composites"],"abstract":[{"lang":"eng","text":"<jats:p>Wood fiber reinforcement of plastics is almost limited to polypropylene, polyethylene, polyvinyl chloride and polystyrene. Wood fiber reinforcement of thermoplastic polyurethanes (TPU) is a new research field and paltry studied scientifically. Wood fiber reinforcement can carry out synergistic effects between sustainability, material or product price reduction, improved mechanical properties at high elongation, and brilliant appearance and haptics. In order to evaluate to what extent the improvement of mechanical properties depend on material-specific parameters (fiber type, fiber content) and on process-specific parameters (holding pressure, temperature control and injection speed), differently filled compounds were injection molded according to a partial factorial test plan and subjected to characterizing test procedures (tensile test, Shore hardness and notched impact test). Tensile strength showed significant dependence on barrel temperature, fiber type and interaction between holding pressure and barrel temperature in the region of interest. Young’s modulus can be influenced by fiber content but not by fiber type. Notched impact strength showed a significant influence of cylinder temperature, fiber content, fiber type and the interaction between cylinder temperature and fiber content in the region of interest. Shore hardness is related to fiber content and the interaction between mold temperature and injection flow rate. Our results show not only that wood-filled TPU can be processed very well by injection molding, but also that the mechanical properties depend significantly on temperature control in the injection-molding process. Moreover, considering the significant reinforcing effect of the wood fibers, a good fiber-matrix adhesion can be assumed.</jats:p>"}],"publication":"Journal of Composites Science","title":"Injection Molding of Wood-Filled Thermoplastic Polyurethane","date_created":"2022-04-20T07:57:46Z","publisher":"MDPI AG","year":"2021","issue":"12","quality_controlled":"1","article_number":"316","user_id":"38221","_id":"30924","status":"public","type":"journal_article","doi":"10.3390/jcs5120316","author":[{"first_name":"Elmar","full_name":"Moritzer, Elmar","last_name":"Moritzer"},{"first_name":"Maximilian","full_name":"Richters, Maximilian","last_name":"Richters"}],"volume":5,"date_updated":"2022-04-20T08:02:41Z","citation":{"apa":"Moritzer, E., &#38; Richters, M. (2021). Injection Molding of Wood-Filled Thermoplastic Polyurethane. <i>Journal of Composites Science</i>, <i>5</i>(12), Article 316. <a href=\"https://doi.org/10.3390/jcs5120316\">https://doi.org/10.3390/jcs5120316</a>","short":"E. Moritzer, M. Richters, Journal of Composites Science 5 (2021).","mla":"Moritzer, Elmar, and Maximilian Richters. “Injection Molding of Wood-Filled Thermoplastic Polyurethane.” <i>Journal of Composites Science</i>, vol. 5, no. 12, 316, MDPI AG, 2021, doi:<a href=\"https://doi.org/10.3390/jcs5120316\">10.3390/jcs5120316</a>.","bibtex":"@article{Moritzer_Richters_2021, title={Injection Molding of Wood-Filled Thermoplastic Polyurethane}, volume={5}, DOI={<a href=\"https://doi.org/10.3390/jcs5120316\">10.3390/jcs5120316</a>}, number={12316}, journal={Journal of Composites Science}, publisher={MDPI AG}, author={Moritzer, Elmar and Richters, Maximilian}, year={2021} }","ama":"Moritzer E, Richters M. Injection Molding of Wood-Filled Thermoplastic Polyurethane. <i>Journal of Composites Science</i>. 2021;5(12). doi:<a href=\"https://doi.org/10.3390/jcs5120316\">10.3390/jcs5120316</a>","ieee":"E. Moritzer and M. Richters, “Injection Molding of Wood-Filled Thermoplastic Polyurethane,” <i>Journal of Composites Science</i>, vol. 5, no. 12, Art. no. 316, 2021, doi: <a href=\"https://doi.org/10.3390/jcs5120316\">10.3390/jcs5120316</a>.","chicago":"Moritzer, Elmar, and Maximilian Richters. “Injection Molding of Wood-Filled Thermoplastic Polyurethane.” <i>Journal of Composites Science</i> 5, no. 12 (2021). <a href=\"https://doi.org/10.3390/jcs5120316\">https://doi.org/10.3390/jcs5120316</a>."},"intvolume":"         5","publication_status":"published","publication_identifier":{"issn":["2504-477X"]}},{"citation":{"bibtex":"@article{Moritzer_Richters_2021, title={Injection Molding of Wood-Filled Thermoplastic Polyurethane}, number={12}, journal={ Journal of  Composites Science}, author={Moritzer, Elmar and Richters, Maximilian}, year={2021} }","short":"E. Moritzer, M. Richters,  Journal of  Composites Science (2021).","mla":"Moritzer, Elmar, and Maximilian Richters. “Injection Molding of Wood-Filled Thermoplastic Polyurethane.” <i> Journal of  Composites Science</i>, no. 12, 2021.","apa":"Moritzer, E., &#38; Richters, M. (2021). Injection Molding of Wood-Filled Thermoplastic Polyurethane. <i> Journal of  Composites Science</i>, <i>12</i>.","ama":"Moritzer E, Richters M. Injection Molding of Wood-Filled Thermoplastic Polyurethane. <i> Journal of  Composites Science</i>. 2021;(12).","ieee":"E. Moritzer and M. Richters, “Injection Molding of Wood-Filled Thermoplastic Polyurethane,” <i> Journal of  Composites Science</i>, no. 12, 2021.","chicago":"Moritzer, Elmar, and Maximilian Richters. “Injection Molding of Wood-Filled Thermoplastic Polyurethane.” <i> Journal of  Composites Science</i>, no. 12 (2021)."},"year":"2021","issue":"12","quality_controlled":"1","publication_identifier":{"issn":["2504-477X"]},"title":"Injection Molding of Wood-Filled Thermoplastic Polyurethane","author":[{"first_name":"Elmar","id":"20531","full_name":"Moritzer, Elmar","last_name":"Moritzer"},{"first_name":"Maximilian","last_name":"Richters","id":"38221","full_name":"Richters, Maximilian"}],"date_created":"2022-06-07T09:50:44Z","date_updated":"2023-05-02T07:04:16Z","status":"public","type":"journal_article","publication":" Journal of  Composites Science","language":[{"iso":"eng"}],"user_id":"44116","department":[{"_id":"9"},{"_id":"367"},{"_id":"321"}],"_id":"31769"},{"status":"public","type":"journal_article","publication":"Journal of Composites Science","article_number":"143","article_type":"original","language":[{"iso":"eng"}],"_id":"20842","user_id":"72722","department":[{"_id":"149"},{"_id":"321"},{"_id":"9"}],"year":"2020","citation":{"ieee":"T. Wu, S. R. Tinkloh, T. Tröster, W. Zinn, and T. Niendorf, “Determination and Validation of Residual Stresses in CFRP/Metal Hybrid Components Using the Incremental Hole Drilling Method,” <i>Journal of Composites Science</i>, Art. no. 143, 2020, doi: <a href=\"https://doi.org/10.3390/jcs4030143\">10.3390/jcs4030143</a>.","chicago":"Wu, Tao, Steffen Rainer Tinkloh, Thomas Tröster, Wolfgang Zinn, and Thomas Niendorf. “Determination and Validation of Residual Stresses in CFRP/Metal Hybrid Components Using the Incremental Hole Drilling Method.” <i>Journal of Composites Science</i>, 2020. <a href=\"https://doi.org/10.3390/jcs4030143\">https://doi.org/10.3390/jcs4030143</a>.","ama":"Wu T, Tinkloh SR, Tröster T, Zinn W, Niendorf T. Determination and Validation of Residual Stresses in CFRP/Metal Hybrid Components Using the Incremental Hole Drilling Method. <i>Journal of Composites Science</i>. Published online 2020. doi:<a href=\"https://doi.org/10.3390/jcs4030143\">10.3390/jcs4030143</a>","mla":"Wu, Tao, et al. “Determination and Validation of Residual Stresses in CFRP/Metal Hybrid Components Using the Incremental Hole Drilling Method.” <i>Journal of Composites Science</i>, 143, 2020, doi:<a href=\"https://doi.org/10.3390/jcs4030143\">10.3390/jcs4030143</a>.","bibtex":"@article{Wu_Tinkloh_Tröster_Zinn_Niendorf_2020, title={Determination and Validation of Residual Stresses in CFRP/Metal Hybrid Components Using the Incremental Hole Drilling Method}, DOI={<a href=\"https://doi.org/10.3390/jcs4030143\">10.3390/jcs4030143</a>}, number={143}, journal={Journal of Composites Science}, author={Wu, Tao and Tinkloh, Steffen Rainer and Tröster, Thomas and Zinn, Wolfgang and Niendorf, Thomas}, year={2020} }","short":"T. Wu, S.R. Tinkloh, T. Tröster, W. Zinn, T. Niendorf, Journal of Composites Science (2020).","apa":"Wu, T., Tinkloh, S. R., Tröster, T., Zinn, W., &#38; Niendorf, T. (2020). Determination and Validation of Residual Stresses in CFRP/Metal Hybrid Components Using the Incremental Hole Drilling Method. <i>Journal of Composites Science</i>, Article 143. <a href=\"https://doi.org/10.3390/jcs4030143\">https://doi.org/10.3390/jcs4030143</a>"},"publication_status":"published","publication_identifier":{"issn":["2504-477X"]},"quality_controlled":"1","title":"Determination and Validation of Residual Stresses in CFRP/Metal Hybrid Components Using the Incremental Hole Drilling Method","doi":"10.3390/jcs4030143","date_updated":"2022-04-26T06:35:08Z","author":[{"last_name":"Wu","full_name":"Wu, Tao","first_name":"Tao"},{"first_name":"Steffen Rainer","full_name":"Tinkloh, Steffen Rainer","id":"72722","last_name":"Tinkloh"},{"last_name":"Tröster","id":"553","full_name":"Tröster, Thomas","first_name":"Thomas"},{"first_name":"Wolfgang","last_name":"Zinn","full_name":"Zinn, Wolfgang"},{"first_name":"Thomas","last_name":"Niendorf","full_name":"Niendorf, Thomas"}],"date_created":"2020-12-25T14:08:35Z"}]