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首页> 外文学位 >A non-destructive method to measure the residual stresses induced by shot peening for non-magnetic materials (Ti6Al4V, Aluminum 7075).
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A non-destructive method to measure the residual stresses induced by shot peening for non-magnetic materials (Ti6Al4V, Aluminum 7075).

机译：一种非破坏性方法，用于测量喷丸​​处理对非磁性材料（Ti6Al4V，铝7075）引起的残余应力。

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摘要

A series of experiments to determine whether the eddy currents can be used to nondestructively measure the residual stress induced by shot peening in Ti6Al4V and Aluminum 7075 plates was performed. The SmartEddy module, a commercially available eddy current testing instrument, was chosen for this research. Because of the extremely small magnitude of the shot peening induced conductivity changes, strict noise control was vital and was finally achieved by modifying the instrument. Experimental results indicate that the eddy current testing system we have developed can measure the intensity of the residual stress induced by shot peening for both Ti6Al4V and Aluminum 7075, and can estimate the stress profile, as a function of depth, for Aluminum 7075. The non-destructive eddy current technique also has great potential to measure the residual stress in many other kinds of non-magnetic materials and, possibly, under certain conditions, for magnetic materials. Further, this eddy current testing system is simple, fast and economic, it should have a significant impact on many industries which use shot peening to increase the fatigue lifetime of manufactured parts.
机译：进行了一系列实验，以确定涡流是否可用于无损测量Ti6Al4V和铝7075板中喷丸处理引起的残余应力。本研究选择了SmartEddy模块（一种市售的涡流测试仪器）。由于喷丸引起的电导率变化非常小，因此严格的噪声控制至关重要，最终可以通过修改仪器来实现。实验结果表明，我们开发的涡流测试系统可以测量Ti6Al4V和铝7075喷丸硬化引起的残余应力强度，并且可以估算铝7075随深度变化的应力曲线。破坏性涡流技术在测量许多其他种类的非磁性材料以及可能在某些条件下对于磁性材料的残余应力方面也具有很大的潜力。此外，该涡流测试系统简单，快速且经济，它对许多使用喷丸处理以增加制造零件的疲劳寿命的行业都将产生重大影响。

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  • 作者

    Chang, Hong.;

  • 作者单位

    Cleveland State University.;

  • 授予单位 Cleveland State University.;
  • 学科 Engineering Materials Science.; Engineering Industrial.
  • 学位 Ph.D.
  • 年度 1996
  • 页码 204 p.
  • 总页数 204
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;一般工业技术;
  • 关键词

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