What are the failure criteria for polymer composite materials?
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Failure criteria for polymer composite materials include stress-based failure criteria, stress gradient-based failure criteria, and unified failure criteria. The stress-based failure criteria determine potential failure locations based on stress conditions, while the stress gradient-based failure criteria consider the cubic power of the effective stress divided by its stress gradient. Both conditions must be satisfied for failure to occur . Unified failure criteria combine stress and strain conditions with stress and strain gradient conditions, and they can be applied to any shape of defect. These criteria provide not only failure locations but also directions of failure propagation . Other widely used failure criteria for polymer composites include the Maximum Stress, Tsai-Wu, Hoffman, Tsai-Hill, Hashin, and Puck criteria, which have been applied in numerical simulations and validated through experimental tests . Micromechanical analysis and virtual experimental testing methodologies have also been used to assess failure criteria and develop failure envelopes for carbon fiber-reinforced polymer composites .
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| Papers (5) | Insight |
|---|---|
| The paper discusses a unified failure criterion for brittle materials, including polymer composites. The criterion consists of two parts that must be satisfied simultaneously for failure to occur. | |
| The paper discusses the validation of various failure criteria for a carbon/epoxy laminate under tensile loads, including Maximum Stress, Tsai-Wu, Hoffman, Tsai-Hill, Hashin, and Puck. | |
| The paper does not explicitly mention the failure criteria for polymer composite materials. | |
| The failure criteria for polymer composite materials are stress-based failure criterion and stress gradient-based failure criterion. | |
| The paper discusses two widely accepted failure criteria for carbon fiber-reinforced polymer (CFRP) composites: the interactive Tsai-Wu and non-interactive Hashin failure criteria. |
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