• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>NDT & E international >Experimental study of nonlinear Rayleigh wave propagation in shot-peened aluminum plates-Feasibility of measuring residual stress
【24h】

Experimental study of nonlinear Rayleigh wave propagation in shot-peened aluminum plates-Feasibility of measuring residual stress

机译：喷丸铝板中非线性瑞利波传播的实验研究-测量残余应力的可行性

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

Shot-peening is widely used in the aerospace industry to enhance the resistance of structural components to fatigue damage and stress corrosion by putting the outside layer of a component under an initial, residual compressive stress. The ability to measure these near-surface residual stresses is useful from a quality control and certification perspective, and can help predict the fatigue life of shot-peened components. This paper presents experimental results to examine the feasibility of measuring near-surface residual stresses using nonlinear Rayleigh surface waves. Experiments are conducted on aluminum alloy (AA 7075) samples shot-peened at different peening intensities and thus with different levels of residual stresses. The surface roughness of these samples is also measured. The nonlinear ultrasonic results show a large increase in the acoustic nonlinearity parameter, indicating the potential of nonlinear ultrasonics for the in situ measurement of near-surface residual stresses. The effects of surface roughness and the driving frequency on the measured acoustic nonlinearity parameter are briefly discussed. Finally, a preliminary model is used to interpret some experimental results. Future work to evaluate the separate contributions of cold work, residual stress and surface roughness to the total measured nonlinearity is also discussed.
机译：喷丸强化技术在航空航天工业中被广泛使用，通过将部件的外层置于初始的残余压应力下，从而增强结构部件对疲劳损伤和应力腐蚀的抵抗力。从质量控制和认证的角度来看，测量这些近表面残余应力的能力非常有用，并且可以帮助预测喷丸部件的疲劳寿命。本文提出了实验结果，以检验使用非线性瑞利表面波测量近表面残余应力的可行性。对以不同喷丸强度进行喷丸处理的铝合金（AA 7075）样品进行了实验，因此具有不同的残余应力水平。还测量了这些样品的表面粗糙度。非线性超声结果表明，声学非线性参数大大增加，表明非线性超声在原位测量近表面残余应力方面的潜力。简要讨论了表面粗糙度和驱动频率对测得的声学非线性参数的影响。最后，使用初步模型来解释一些实验结果。还讨论了评估冷作，残余应力和表面粗糙度对总测量非线性的单独贡献的未来工作。

著录项

  • 来源
    《NDT & E international》 |2011年第1期|p.67-74|共8页
  • 作者

    Minghe Liu; Jin-Yeon Kim; Laurence Jacobs; Jianmin Qu;

  • 作者单位

    Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL 60208, USA;

    School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0355, USA;

    School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0355, USA,GWW School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405, USA;

    Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL 60208, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    residual stress; nonlinear ultrasonics; shot-peening;

    机译：残余应力非线性超声喷丸;

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