基于数字图像相关方法测试Cr12MoV钢的断裂韧性
发布时间：2019-01-16 02:04
【摘要】：将数字图像相关方法用于测量含Ⅰ型裂纹Cr12MoV钢的断裂韧性。搭建了数字图像相关方法非接触光学测试系统,通过进行三点弯曲试验,得到了Cr12MoV钢试件裂纹尖端的位移场。从位移场提取了裂纹嘴张开位移,并通过P-V曲线得到Ⅰ型裂纹Cr12MoV钢的断裂韧性。将实验结果与传统COD引伸计测试结果进行对比,误差不超过10%,证明该方法是准确的。
[Abstract]:The digital image correlation method is used to measure the fracture toughness of Cr12MoV steel with mode I cracks. A digital image correlation method non-contact optical measurement system is built. The displacement field at the crack tip of Cr12MoV steel specimen is obtained by three point bending test. The crack opening displacement was extracted from the displacement field and the fracture toughness of mode I cracked Cr12MoV steel was obtained by P-V curve. The experimental results are compared with those of the traditional COD extensometer, and the error is not more than 10. It is proved that the method is accurate.
【作者单位】： 昆明理工大学建筑工程学院;昆明理工大学云南省高校先进材料力学行为与微结构设计重点实验室;
【基金】：国家自然科学基金项目(11362007,11462009)
【分类号】：TG142.12
本文编号：2409347
[Abstract]:The digital image correlation method is used to measure the fracture toughness of Cr12MoV steel with mode I cracks. A digital image correlation method non-contact optical measurement system is built. The displacement field at the crack tip of Cr12MoV steel specimen is obtained by three point bending test. The crack opening displacement was extracted from the displacement field and the fracture toughness of mode I cracked Cr12MoV steel was obtained by P-V curve. The experimental results are compared with those of the traditional COD extensometer, and the error is not more than 10. It is proved that the method is accurate.
【作者单位】： 昆明理工大学建筑工程学院;昆明理工大学云南省高校先进材料力学行为与微结构设计重点实验室;
【基金】：国家自然科学基金项目(11362007,11462009)
【分类号】：TG142.12
【相似文献】
相关期刊论文 前2条
1 郭海鸿;李晓星;;非接触应变测量的数字散斑相关方法的研究[J];现代制造工程;2007年11期
2 申晋,郑刚,李孟超,孙国强;PCS颗粒测量技术中软件相关方法的研究[J];仪器仪表学报;2003年06期
，本文编号：2409347
本文链接：https://www.wllwen.com/kejilunwen/jiagonggongyi/2409347.html
