• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Research in nondestructive evaluation: a journal of the American Society for Nondestructive Testing >Calculation and measurement of scattering coefficients for surface-breaking cracks sonified by a focused array
【24h】

Calculation and measurement of scattering coefficients for surface-breaking cracks sonified by a focused array

机译：聚焦阵列超声破碎表面裂纹的散射系数计算与测量

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

A simulation of a focused beam of surface wave motion generated by a line array of surface wave transducers is used to calculate the field scattered back from a surface-breaking crack. The backscattered field is expressed in terms of a scattering coefficient, which is derived from the reciprocal identity for elastodynamic states, and which is calculated numerically by using the Kirchhoff approximation. In an earlier work the validity of the focused beam simulation has been verified. In this paper, the theoretical results for the backscattered field are compared with measurements for two crack sizes, one of which is used for calibration.
机译：由表面波换能器的线阵列产生的表面波运动的聚焦束的模拟用于计算从表面破裂的裂纹散射回的场。后向散射场以散射系数表示，该散射系数是从弹性动力学状态的倒数恒等式导出的，并使用基尔霍夫近似进行数值计算。在较早的工作中，已经验证了聚焦光束模拟的有效性。在本文中，将反向散射场的理论结果与两种裂纹尺寸的测量结果进行了比较，其中一种用于校准。

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