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Repeated Impact Damage Behavior and Damage Tolerance of Bio-Inspired Helical-Structured Glass Fiber Resin Matrix
Liang He1, Zhaoyue Yao1, Lanlan Jiang1
1School of Science, Harbin Institute of Technology, Shenzhen 518055, China.
Polymers
|July 12, 2025
Summary
This study introduces bionic helical designs for polymer composites, enhancing impact resistance. Novel configurations improve damage tolerance and structural integrity under repeated impacts.
Area of Science:
- Materials Science
- Composite Materials Engineering
- Mechanical Engineering
Background:
- Polymer matrix composites (PMCs) are crucial in various industries due to their high strength-to-weight ratio.
- Enhancing the impact resistance and damage tolerance of PMCs is critical for safety and performance in demanding applications.
- Existing designs often struggle to mitigate damage effectively under repeated impact events.
Purpose of the Study:
- To propose and investigate a novel bionic helical configuration for glass-fiber-reinforced polymer matrix composites.
- To systematically evaluate the multiple impact resistance and damage tolerance of these bionic structures.
- To develop optimized designs for high-performance, impact-resistant composite materials.
Main Methods:
- Fabrication of bionic laminates with cross-helical and symmetric-helical structures.
- Repeated low-energy impact testing (5 J) over multiple impact cycles (1, 5, 10, 15).
- Advanced characterization using ultrasonic C-scan and X-ray computed tomography (CT) for damage analysis.
- Development and validation of a finite element model for impact simulation and post-impact behavior analysis.
Main Results:
- Detailed characterization of interlaminar damage propagation mechanisms under repeated impacts.
- Identification of failure characteristics specific to the bionic helical configurations.
- Successful development of a comprehensive finite element model simulating impact and post-impact compression.
- Design and proposal of three optimized novel bionic configurations based on simulation and experimental data.
Conclusions:
- Bionic helical configurations offer a promising approach to enhance the impact resistance and damage tolerance of polymer matrix composites.
- The developed finite element model provides a valuable tool for predicting and optimizing composite performance under impact loading.
- The optimized bionic designs offer significant potential for advancing the structural integrity of high-performance composites in impact-critical applications.
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