其他null检测 | 一种通过数字图像相关（DIC）全场形变位移测量计算J积分参量的途径-北京欧兰科技发展有限公司

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应用领域	其他
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采用LaVision的DaVis7.2版数字图像相关DIC分析软件和ImagerProX4M制冷型带相机头内存14比特高性能CCD相机构成的测试系统，测量分析材料疲劳断裂测试过程中的J积分参量。

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LaVision StrainMaster材料应变形变成像测量系统
型号：StrainMaster

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This paper presents a combined experimental-numerical technique for the calculation
of the J-integral as an area integral in cracked specimens. The proposed technique is
based on full-field measurement using digital image correlation (DIC) and the Finite
element method. The J-integral is probably the most generalised and widely used
parameter to quantify the fracture behaviour of both elastic and elastoplastic
materials. The proposed technique has the advantage that it does not require crack
length measurements nor is it limited to elastic fracture mechanics, provided that only
small scale yielding is present. Evaluated are three test geometries; compact tension,
three-point bend and the double torsion beam. Possible errors and their magnitude
and the limitations of the method are considered.

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北京欧兰科技发展有限公司

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