Estimation of Crack Shape with Two-way Excitation Eddy Current Testing Probe

DOI Web Site Web Site 6 References

Bibliographic Information

Other Title
  • 2方向励磁型渦電流探傷プローブによる傷形状の推定評価
  • 2 ホウコウレイジガタ ウズデンリュウタンショウ プローブ ニ ヨル キズ ケイジョウ ノ スイテイ ヒョウカ

Search this article

Abstract

<p>Eddy current testing (ECT) system for the spring steel materials that is able to estimate crack shape was developed. Inspection signal of spring steel material is affected by the permeability distribution about its surface. Then the magnetizer that reduce variability of permeability and the pancake probe that grasps regional states of spring steel material were introduced to the system. It was confirmed thereby that this probe is able to detect depth 50 µm crack with a sufficient S/N ratio. Exciting coil that generates two-way direction eddy current was developed and average depth and outline of cross-sectional shape were estimated by its inspection signals. Then the method of estimating crack shape was developed, which has feature that integrates two results by different direction eddy current. In addition, the validity of the method was confirmed by evaluating relationship between crack shapes and calculated inspection results with finite element method (FEM) analysis.</p>

Journal

References(6)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top