• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Stress Evaluation Using Neutrons and Synchrotron Radiation; 20070924-26; Vienna(AT) >Experimental/modelling study of residual stress in AI/SiC_p bent bars by synchrotron XRD and slitting eigenstrain methods
【24h】

Experimental/modelling study of residual stress in AI/SiC_p bent bars by synchrotron XRD and slitting eigenstrain methods

机译：AI / SiC_p弯曲棒残余应力的同步加速器XRD和纵剪本征应变试验/模型研究

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The aim of the study presented here was to evaluate the residual stresses present in a bar of aluminium alloy 2124-T1 matrix composite (MMC) reinforced with 25vol% particulate silicon carbide (SiC_p) using X-ray diffraction and 3D profilometry (curvature measurement using Mitutoyo/Renishaw coordinate measurement machine) and comparing these results with numerical models of residual strain and stress profiles obtained by a simple inelastic bending model and Finite Element Analysis (FEA). The residual strain distribution was introduced into the test piece by plastic deformation in the 4-point bending configuration. At the first stage of this study the elastic-plastic behaviour of the MMC was characterized under static and cyclic loading to obtain the material parameters, hardening proprieties and cyclic hysteresis loops. Subsequently, synchrotron X-ray diffraction and CMM curvature measurements were performed to deduce the residual stress profile in the central section of the bar. The experimental data obtained from these measurements were used in the inelastic bending and FEA simulations. The specimens were then subjected to incremental slitting using EDM (electric discharge machining) with continuous back and front face strain gauge monitoring. The X-ray diffraction and incremental slitting results were then analysed using direct and inverse eigenstrain methods. Residual stresses plots obtained by different methods show good agreement with each other.
机译：此处进行研究的目的是使用X射线衍射和3D轮廓测量法（曲率测量，使用25vol％颗粒碳化硅（SiC_p）增强）对铝合金2124-T1基复合材料（MMC）的棒材中的残余应力进行评估Mitutoyo / Renishaw坐标测量机），并将这些结果与通过简单的非弹性弯曲模型和有限元分析（FEA）获得的残余应变和应力分布的数值模型进行比较。残余应变分布通过四点弯曲配置中的塑性变形引入到测试件中。在本研究的第一阶段，对MMC的弹塑性行为进行了静态和循环载荷表征，以获得材料参数，硬化性能和循环磁滞回线。随后，进行同步加速器X射线衍射和CMM曲率测量，以得出棒材中央部分的残余应力分布。从这些测量中获得的实验数据被用于非弹性弯曲和有限元分析。然后，使用EDM（放电加工）对样品进行连续纵切和连续应变监测。然后使用直接和逆本征应变方法分析X射线衍射和增量纵切结果。通过不同方法获得的残余应力图显示出良好的一致性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号