小冲杆试样、金属材料断裂韧度阻力曲线测试装置及方法
By using a small punch test method with grooves and through slots on the circular sample, the problem of sampling difficulties caused by the large volume of standard samples was solved, and micro-destructive testing and high-precision fracture toughness measurement of in-service equipment were realized.
CN117129296BActive Publication Date: 2026-07-17EAST CHINA UNIV OF SCI & TECH +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- EAST CHINA UNIV OF SCI & TECH
- Filing Date
- 2023-09-26
- Publication Date
- 2026-07-17
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Figure CN117129296B_ABST
Abstract
本发明公开了一种小冲杆试样、金属材料断裂韧度阻力曲线测试装置及方法，涉及金属材料性能测试领域，小冲杆试样为圆片试样，经过圆片试样的正面的中心开设凹槽；凹槽的深度小于圆片试样的厚度；凹槽的中心位置开设贯穿圆片试样表面的透槽；试验时，通过向透槽施加载荷；不同的圆片试样承载不同的载荷，具有不同的载荷位移曲线和不同的裂纹扩展量；载荷位移曲线、裂纹扩展量和关联系数用于确定圆片试样的金属材料的断裂韧度阻力曲线。本发明解决了标准试样取样体积大而无法实现对在役承压设备的取样检测的问题。
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