Compressive Failure and Dual-Defect Coupling Effects of Open-Hole Composite Laminates with Drilling-Induced Delamination.

Rui Zhu, Yonghui Liu, Xingyue Nie, Qingqing Xiao, Jingpu Liang, Dongfeng Cao

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Article in Materials (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

Rui ZhuSchool of Information and Mechanical and Electrical Engineering, College of Arts and Sciences, Yangtze University, Jingzhou 434020, China.

Yonghui LiuSchool of Information and Mechanical and Electrical Engineering, College of Arts and Sciences, Yangtze University, Jingzhou 434020, China.

Xingyue NieSchool of Information and Mechanical and Electrical Engineering, College of Arts and Sciences, Yangtze University, Jingzhou 434020, China.

Qingqing XiaoSchool of Information and Mechanical and Electrical Engineering, College of Arts and Sciences, Yangtze University, Jingzhou 434020, China.

Jingpu LiangSchool of Information and Mechanical and Electrical Engineering, College of Arts and Sciences, Yangtze University, Jingzhou 434020, China.

Dongfeng CaoState Key Laboratory of Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study investigates the influence of drilling-induced delamination damage on the compressive mechanical behavior of open-hole carbon fiber-reinforced composite laminates and explores the failure mechanisms under dual-defect coupling effects. Specimens with circular delamination defects of varying sizes were fabricated by embedding polytetrafluoroethylene (PTFE) films during the layup process. Ultrasonic C-scan and digital image correlation (DIC) techniques were used to monitor delamination propagation and deformation behavior. A cohesive zone-based numerical model was developed and validated against experimental results to reveal the three-stage failure process in single-defect cases. The validated model was then used to analyze the coupling effects of dual defects (same side and opposite side). The results show that dual delamination defects significantly reduce the compressive load-bearing capacity of open-hole composite laminates. Specifically, same-side defects exhibit a failure mode similar to single-defect structures, while opposite-side defects display a unique failure behavior characterized by dual-crack propagation, further reducing the compressive load-bearing capacity.

Indexed as

compressive failuredrilling-induced delaminationdual-defect couplingopen-hole composite laminates

Identifiers

PMID40572920

DOI10.3390/ma18122790

PMCPMC12195511

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.