抄録
A direct-current potential-drop NDE technique has been developed for the evaluation of a 3-D back-wall crack in thick-walled structures. The measuring system contains two pairs of probes - one for current supply and the other for the measurement of potential-drop, where the current-supply and measuring probes are in close proximity to each other. The optimum arrangement of the four-point-probes system is determined from the finite-element simulation of the three-dimensional electric crack problem. The predicted potential-drop across the crack has been verified experimentally using the newly developed measuring sensor. Measured results of semi-elliptical cracks in stainless steel plates establish the practicality as well as reliability of the present potential-drop method of testing for the evaluation of 3-D back-wall cracks in thick-walled structures.
| 本文言語 | English |
|---|---|
| ページ（範囲） | 434-440 |
| ページ数 | 7 |
| ジャーナル | Key Engineering Materials |
| 巻 | 321-323 I |
| 出版ステータス | Published - 2006 |
ASJC Scopus subject areas
- 材料科学（全般）
- 材料力学
- 機械工学