Procedure for accurate calculation of the          type='mathematics'>                      J                            <b >            J                      <i >JJ                          ‐integral from digital volume correlation displacement data

摘要

Abstract > The application of digital image and volume correlation techniques to obtain displacement fields from images has become ubiquitous in experimental fracture mechanics. In this paper, a procedure to extract the J ‐integral ( J ) from three‐dimensional displacement fields obtained using digital volume correlation is presented. The procedure has been specially adapted to allow for experimental noise and errors, such as poorly defined crack front displacements, smearing of the displacement field across the crack faces, and knowledge of the imprecise crack front location. The implementation is verified using analytical crack‐tip fields perturbed with synthetic image correlation errors to characterise the response of J. The method is then applied to experimental results using a Magnesium alloy WE43 loaded elastically in mixed mode. The steps outlined are intended as a guideline for the application of the volume integral from displacement fields to allow for accurate calculation of J along a crack front embedded within the volume. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> > 数字图像和体积相关技术的应用来获得图像的位移场已经变得普遍存在实验骨折力学中。在本文中，提取的程序 j </ i> -不可缺少的（ j </ i> ）呈现了使用数字体积相关的三维位移场。该程序专门适用于允许实验噪声和误差，例如定义裂缝前置差，横穿裂缝面的位移场的涂抹，以及不精确的裂缝前置位置的知识。使用具有合成图像相关误差的分析裂纹尖端字段来验证实现，以表征响应 j。</ i> 然后将该方法应用于使用弹性模式以弹性装载的镁合金We43的实验结果。概述的步骤旨在作为从位移字段中应用积分的卷以允许准确计算的指导 j </ i> 沿着嵌入体积内的裂缝前面。 </ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-28616/'>《Strain》</a> <b style="margin: 0 2px;">|</b><span>2020年第2期</span><b style="margin: 0 2px;">|</b><span>共18页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/1674.html" title="工程基础科学">工程基础科学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=digital volume correlation&option=203" rel="nofollow">digital volume correlation;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=fracture mechanics&option=203" rel="nofollow">fracture mechanics;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=J ‐integral&option=203" rel="nofollow">J ‐integral;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=X‐ray computed tomography&option=203" rel="nofollow">X‐ray computed tomography;</a> </p> <div class="translation"> 机译：数字体积相关;裂缝力学;J- integral;X射线计算断层扫描; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704024323234.html">Procedure for accurate calculation of the type="mathematics"> J <b > J <i >JJ ‐integral from digital volume correlation displacement data</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> </a> <a href="/journal-foreign-28616/" target="_blank" rel="nofollow" class="tuijian_authcolor">Strain .</a> <span>2020</span><span>,第2期</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：准确计算的程序 type =“mathematics”> j </ i> </ b> </ span> j </ i> </ b> j </ i> j - 来自数字体积相关位移数据的孤独</span> </p> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704024932777.html">Evaluation of mode-I SIF, T-stress and J-integral using displacement data from digital image correlation - Revisited</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Reddy M. 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Procedure for accurate calculation of the type='mathematics'> J J JJ ‐integral from digital volume correlation displacement data

摘要