“正交”便携反射式光弹性仪误差分析
发布时间:2018-01-14 05:31
本文关键词:“正交”便携反射式光弹性仪误差分析 出处:《河南理工大学学报(自然科学版)》2014年05期 论文类型:期刊论文
【摘要】:为满足工程现场观测高应变梯度区域、裂纹尖端区域应力光图以及用光弹贴片钻孔法测残余应力的需要,研究了基于光弹贴片技术原理的反射式光弹性仪,分析了"正交"反射式光弹性仪偏光系统的工作原理,运用误差理论论证了仪器设计的可行性及有效性,本仪器正、反两测回所得的测量数据是等精度的,给出了仪器测试结果的极限误差.结果表明,使用该仪器能得到光弹性方法中的全部试验数据,极限误差满足原理误差要求.
[Abstract]:In order to meet the need of field observation of high strain gradient region, crack tip region stress light map and the measurement of residual stress by photoelastic patch drilling method, a reflective photoelastic meter based on photoelastic patch technique is studied. This paper analyzes the working principle of the polarizing system of the "orthogonal" reflection photoelastic meter, and proves the feasibility and validity of the design of the instrument by using the error theory. The measured data obtained from the positive and negative measurements of this instrument are of equal accuracy. The limit error of the test results of the instrument is given. The results show that all the experimental data in the photoelastic method can be obtained by using the instrument, and the limit error can meet the requirements of the principle error.
【作者单位】: 郑州航空工业管理学院;
【基金】:河南省科技攻关计划项目(102102210148)
【分类号】:TH70
【正文快照】: 0引言光弹贴片技术在机械、建筑、航天、航空、核工业、矿山、汽车等领域已得到广泛应用.基于光弹贴片技术原理的“V”型光路的反射式光弹性仪是用于测量结构表面应力、应变的仪器,它的独特优点是能全场、直观、非接触式地测量结构表面的应力、应变场,它既可以直接对原型结构,
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