长江科学院院报2012，Vol.29Issue(11)：73-76,4.DOI:10.3969/j.issn.1001-5485.2012.11.016
锚杆质量无损检测中的缺陷信息提取方法研究
Method of Extracting Defective Information in Non-destructive Detection of Anchor Quality
摘要
Abstract
Aiming at the problem of finding weak reflection signal from the bottom of the anchor, we carried out test on anchor model in accordance with current technique specification, and extracted three instantaneous information, I. E. Instantaneous frequency, instantaneous amplitude, and instantaneous phase by the Hilbert transform. Result of the test indicates that the three instantaneous information is effective at picking up the reflection wave information, especially the instantaneous frequency can effectively extract the arrival time of reflection wave, which remarkably enhances the accuracy of anchor length evaluation.关键词
锚杆/无损检测/三瞬信息/反射波Key words
anchor/ non-destructive test/ three instantaneous information/ reflection wave分类
建筑与水利引用本文复制引用
肖国强,吴基昌,周黎明,王法刚..锚杆质量无损检测中的缺陷信息提取方法研究[J].长江科学院院报,2012,29(11):73-76,4.基金项目
国家重点基础研究发展计划"973"项目(2011CB710600) （2011CB710600）
中央级公益性科研院所基金项目(CKSF2012019/YT) （CKSF2012019/YT）
