Molds & Tooling
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Glass Fibre poor fatigue resistance
Problem Phenomenon
Glass Fibre product fatigue life <10⁴ cycles, below the 10⁵ cycles requirement
Cause Analysis
Glass Fibre elastic recovery insufficient, each cycle accumulates plastic deformation; crosslinking degree too low, fatigue crack propagates fast
Solution
1) Raise crosslinking degree to improve recovery and reduce accumulated deformation; 2) select high molecular weight grade to raise fatigue threshold; 3) product design reduces stress concentration
Key Takeaway
Poor fatigue resistance is caused by insufficient recovery and fast crack propagation; raising crosslinking is key
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