Scholarlink

<p>A&#xa0;traditional procedure for determining the length of detected cracks using eddy current probe signals is analyzed, as are possible errors in determining the crack length associated with the scanning step and the sensitivity threshold level of the eddy current flaw detector. A&#xa0;perspective method for determining the length of cracks using characteristic points of the spatial distribution of the signal amplitude along the crack, which are invariant with respect to the established sensitivity level, is presented and investigated. Such characteristic points are the inflection points for the first derivative of the signal distribution or the points of minimum for the second derivative of the signal distribution. The proposed method can be effectively used in automated eddy current inspection systems that subsequently scan the inspected surface, with the obtained results recorded and processed according to the proposed algorithm.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Determination of the length of cracks by characteristic points of the eddy current probe signal distribution

  • 期刊论文

  • 发表日期：

    2026年7月23日

查看全文
  • V. M. Uchanin

摘要

A traditional procedure for determining the length of detected cracks using eddy current probe signals is analyzed, as are possible errors in determining the crack length associated with the scanning step and the sensitivity threshold level of the eddy current flaw detector. A perspective method for determining the length of cracks using characteristic points of the spatial distribution of the signal amplitude along the crack, which are invariant with respect to the established sensitivity level, is presented and investigated. Such characteristic points are the inflection points for the first derivative of the signal distribution or the points of minimum for the second derivative of the signal distribution. The proposed method can be effectively used in automated eddy current inspection systems that subsequently scan the inspected surface, with the obtained results recorded and processed according to the proposed algorithm.