DIGITAL IMAGE CORRELATION USING NEWTON-RAPHSON METHOD OF PARTIAL-DIFFERENTIAL CORRECTION
DIGITAL IMAGE CORRELATION USING NEWTON-RAPHSON METHOD OF PARTIAL-DIFFERENTIAL CORRECTION
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DOI：
10.1007/bf02321405
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发表时间：
1989-09-01
影响因子：
2.4
通讯作者：
PETERS, WH
中科院分区：
文献类型：
--
作者：
BRUCK, HA;MCNEILL, SR;PETERS, WH
数字图像相关在机械领域得到了更广泛的应用。当前技术的一个弱点是缺乏可用的位移梯度项。该技术基于粗细搜索方法，能够计算梯度。然而，它的速度太快了，阻碍了广泛使用。本文介绍了一种方法的开发和有限的实验验证，该方法可以使用牛顿-拉夫森部分校正方法来确定位移和梯度。结果表明，该方法在确定位移和某些梯度方面是准确的，同时比当前的粗细搜索方法使用的 CPU 时间显着减少。
Digital image correlation is finding wider use in the field of mechanics. One area of weakness in the current technique is the lack of available displacement gradient terms. This technique, based on a coarse-fine search method, is capable of calculating the gradients. However the speed at which it does so has prevented widespread use. Presented in this paper is the development and limited experimental verification of a method which can determine displacements and gradients using the Newton-Raphson method of partial corrections. It will be shown that this method is accurate in determining displacements and certain gradients, while using significantly less CPU time than the current coarse-fine search method.