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Authors
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Bätzel, T.; Welker, C.; Hornig, A.; Stommel, M.; Spickenheuer, A.; Gude, M.
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Title
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Interlaminar properties of tailored fiber placement based CFRP laminates
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Date
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16.04.2025
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Number
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0
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Abstract
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This study presents the development and application of an approach for experimentally identifying the interlaminar properties of carbon fiber-reinforced polymer (CFRP) laminates manufactured using the Tailored Fiber Placement (TFP) process. The embroidery parameters in the (TFP) laminates were maintained constant through the laminate thickness, ensuring an exclusively in-plane unidirectional fiber orientation. Double Cantilever Beam (DCB) and End Loaded Split (ELS) specimens were specifically adapted for production using the (TFP) process. Despite the negligible interlaminar reinforcement effect of the tested Polyethylene Terephthalate (PET) embroidery yarn, the experiments revealed significantly enhanced Critical Energy Release Rates (CERRs), with mode I and mode II values being 8.6 and 3.7 times higher, respectively, than those of conventional non-woven prepreg-based CFRP materials. These improvements are primarily attributed to (a) the elimination of weak spots within the preform architecture and (b) the resulting fluted crack surface. The numerical modeling of DCB and ELS tests using the Cohesive Zone Model (CZM) demonstrated high accuracy, confirming the reliability of the approach for capturing interlaminar behavior.
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Publisher
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Taylor & Francis
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Wikidata
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Citation
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Mechanics of Advanced Materials and Structures (2025) 1-12
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DOI
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https://doi.org/10.1080/15376494.2025.2489175
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Tags
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