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Updated: Jun 25, 2026
10:12
Gross Dissection of the Stomach of the Lobster, Homarus Americanus
Published on: May 22, 2009
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Soft Defect-Tolerant Material Inspired by American Lobsters
Hao Zhang1, Jingheng Shu2, Jinrong Wu1
1State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China.
ACS Applied Materials & Interfaces
|May 16, 2020
Summary
Inspired by lobsters, this study created a defect-tolerant soft composite using nonwoven fabrics and silicon rubber. The material mimics natural structures to achieve high strength and toughness, crucial for advanced engineering applications.
Area of Science:
- Biomimetics and Materials Science
- Soft composite materials engineering
Background:
- American lobster joint membranes exhibit remarkable strength, toughness, and defect tolerance.
- This is attributed to their periodic helicoidal stacking of fiber layers connected by a weak matrix.
Purpose of the Study:
- To fabricate a multilayer soft composite inspired by lobster joint membranes.
- To investigate the influence of structural and material properties on the composite's fracture behavior.
Main Methods:
- Fabrication of a soft composite using nonwoven fabrics and silicon rubber with helicoidal stacking.
- Systematic analysis using experimental tensile tests and finite element analysis (FEA).
- Evaluation of factors including stacking structure, matrix strength, fabric strength, and notch size.
Main Results:
- The fabricated soft composite exhibits a gradual failure process, similar to natural lobster joints.
- A linear relationship was observed between tensile strength/toughness and notch size, indicating defect tolerance.
- Helicoidal stacking and a weak matrix effectively deflect and inhibit crack propagation.
Conclusions:
- The biomimetic soft composite successfully replicates the high strength, toughness, and defect tolerance of lobster joint membranes.
- The design principles, including helicoidal stacking and a weak matrix, are key to achieving superior mechanical properties and damage resistance.
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