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Journals / European Mechanical Science / 2017 / Cilt: 1 - Sayı: 4

Characterization of Delamination Crack in Multidirectional E-glass/epoxy Composite under Mode I Loading

Fatih Darıcık
Züleyha Aslan
Pages
117–128
Publication Date
2017-11-27
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

According to the results, while fiber orientation affects significantly the extended crack length and the GIc distribution along the specimen width, stacking sequence only affects the GIc distribution.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, mode I critical strain energy release rate (GIc) of unidirectional E-glass/epoxy was determined by double cantilever beam (DCB) test.
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Key Findings & Data:The effect of stacking sequence and fiber orientation of the sublaminates and the effect of thickness on mode I delamination crack length and GIc distribution along the specimen width in 0o//0o interface have been studied using ANSYS®. 3-D 8-node linear interface element INTER 205 is used to create a predefined crack path.
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Conclusion & Impact:According to the results, while fiber orientation affects significantly the extended crack length and the GIc distribution along the specimen width, stacking sequence only affects the GIc distribution.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:E-glass/epoxy · Double Cantilever Beam · Delamination

Abstract

In this study, mode I critical strain energy release rate (GIc) of unidirectional E-glass/epoxy was determined by double cantilever beam (DCB) test. Calculated GIc was used to initiate delamination in numerical models. The effect of stacking sequence and fiber orientation of the sublaminates and the effect of thickness on mode I delamination crack length and GIc distribution along the specimen width in 0o//0o interface have been studied using ANSYS®. 3-D 8-node linear interface element INTER 205 is used to create a predefined crack path. To investigate the fiber orientation effect, composites with [+θ2, 902, -θ2, 02]s stacking sequences were modeled. Interlaminar fracture analyses were performed by Virtual Crack Closure Technique (VCCT). Experimental and numerical critical loads (Pcr) showed a good agreement. According to the results, while fiber orientation affects significantly the extended crack length and the GIc distribution along the specimen width, stacking sequence only affects the GIc distribution.

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Cite This Article

Darıcık, F., Aslan, Z. (2017). Characterization of Delamination Crack in Multidirectional E-glass/epoxy Composite under Mode I Loading. European Mechanical Science, Cilt: 1 - Sayı: 4, 117–128. https://ajindex.com/articles/665210

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References (9)

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