• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Evaluation >Quantitative Testing of Small, Tight Backwall Cracks in Steel Objects Using Ultrasonic Longitudinal Waves
【24h】

Quantitative Testing of Small, Tight Backwall Cracks in Steel Objects Using Ultrasonic Longitudinal Waves

机译：超声纵波定量测试钢制物体中小的紧实后壁裂纹

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

Quantitative testing of tightly closed, small backwall cracks in steel objects has been investigated under load-free conditions. Both the fully open and tightly closed fatigue cracks in two different structural materials of interest are considered. The investigation has been carried out using a new ultrasonic angle beam technique, which has the capability of sensitively dealing with very small, tight cracks. Using the technique, both the crack size and the extent of crack closure of an unknown crack can be determined simultaneously from the measured response by solving an inverse problem. Based on the experimental observation, an evaluation algorithm has been developed for the characterization of an unknown crack (open/closed) in both stainless and carbon steel structures, where a theoretical model of crack closure is used. Results of the present investigation are compared and discussed in light of those obtained using the standard ultrasonic techniques of testing.
机译：在无负载条件下，已经对钢制物体中紧密闭合的小后墙裂缝进行了定量测试。两种感兴趣的结构材料中的完全打开和紧密闭合的疲劳裂纹都被考虑了。已经使用新的超声波角射束技术进行了研究，该技术具有灵敏地处理非常小的紧密裂纹的能力。使用该技术，可以通过解决反问题，从测量的响应中同时确定裂纹大小和未知裂纹的裂纹闭合程度。根据实验观察结果，开发了一种评估算法，用于表征不锈钢和碳钢结构中的未知裂纹（开/关），其中使用了裂纹闭合的理论模型。根据使用标准超声测试技术获得的结果，对本研究的结果进行了比较和讨论。

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