仪器化落锤冲击试验曲线分析  

Analysis of Instrumented Drop Impact Curve

作　　者：董学新[1] 朱伏先[1] 王贵桥[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004

出　　处：《材料开发与应用》2009年第3期46-49,59,共5页Development and Application of Materials

基　　金：国家高技术研究发展计划支撑项目(2001AA332020-01)

摘　　要：仪器化冲击试验机的发展使冲击试验过程可视化、定量化、数字化。通过对数千次冲击试验的曲线及数据分析,体会到除总冲击功外,还有屈服力、最大力、稳定裂纹扩展的出现、不稳定裂纹扩展起始力及终止力、试样弯曲位移、冲击过程的时间等大量数据,可供人们更准确、定量地进行金属材料力学性能的比较分析与评价。对金属材料制造技术的研究开发和最佳轧制工艺的确定,具有重要价值。The development of instrumented impact test machine makes impact test process visible, quantitative and digital. By analysis of the curve and data for thousands of impact test, it is fotmd that besides total impact work massive data, such as yield force, maximum force, stable crack growth, initial and terminal force of unstable crack growth, can be obtained, so more accurate and digital comparative analysis and evaluation for mechanical properties of metal material are possible, which will be benefit to the research of metal material manufacture and optimization of wiling process.

关 键 词：仪器化 冲击试验 特征值 裂纹扩展 吸收功 

分 类 号：TB302[一般工业技术—材料科学与工程]