Material Characterization of Cast Iron by Eddy Current Testing
-
- Abe Toshihiko
- AIST Tohoku
-
- Uchimoto Tetsuya
- Tohoku University Institute of Fluid Science
-
- Takagi Toshiyuki
- Tohoku University Institute of Fluid Science
-
- Tada Shuuji
- AIST Tohoku
Bibliographic Information
- Other Title
-
- 渦電流法による鋳鉄の材質評価
- ウズデンリュウホウ ニ ヨル チュウテツ ノ ザイシツ ヒョウカ
Search this article
Abstract
Eddy current testing was applied for the quantitative evaluation of the matrix structure and hardness of ductile cast iron. Two kinds of specimen groups, (1) 19 specimens of the 5-step bar type and (2) 57 specimens cut from actual casting products, were prepared. Three types of eddy current equipments, (1) Commercial eddy current tester, (2) Special tester designed for cast iron characterization, (3) Simple tester using an iron core coil were used. The correlation coefficient (R) between Brinell hardness and eddy current signal of 50 kHz was as high as 0.92 for all the specimens, and 0.96 for the selected specimens having similar chemical composition and graphite shape. The specially designed tester, which is easy to handle and inexpensive, showed almost the same accuracy as the commercial eddy current tester. Distortion of the eddy current signal caused by strong magnetic field with an iron core coil was larger in ferritic cast iron than in pearlitic cast iron. This discrepancy was detected through a high pass filter and successfully applied to evaluate the hardness of cast iron.
Journal
-
- Journal of Japan Foundry Engineering Society
-
Journal of Japan Foundry Engineering Society 75 (10), 675-681, 2003
Japan Foundry Engineering Society
- Tweet
Details 詳細情報について
-
- CRID
- 1390001206507392768
-
- NII Article ID
- 130004556449
- 10013907938
-
- NII Book ID
- AN10514770
-
- COI
- 1:CAS:528:DC%2BD3sXpsVKnsLs%3D
-
- ISSN
- 21855374
- 13420429
-
- NDL BIB ID
- 6730439
-
- Text Lang
- en
-
- Data Source
-
- JaLC
- NDL
- CiNii Articles
-
- Abstract License Flag
- Disallowed