Material characterization of cast irons with an EMAT/EC dual probe

作者：Ohtaki Keitaro; Uchimoto Tetsuya^*; Takagi Toshiyuki

来源：International Journal of Applied Electromagnetics and Mechanics, 2010, 33(3-4): 1135-1141.

DOI：10.3233/JAE-2010-1230

• Dual probe
• electromagnetic acoustic transducer
• eddy current testing
• cast irons
• matrix structure
• graphite form

Mechanical properties of cast irons strongly depend on the graphite morphology and the matrix structure, thus both of them should be evaluated for their characterization. The former can be evaluated by ultrasonic testing (UT), and the latter can be evaluated by eddy current testing (ECT). Considering the background above, this study proposes a novel method for the material characterization of cast irons with an EMAT/EC dual probe. For this purpose, we conducted UT and ECT for cast irons with different graphite morphology and matrix structures with the present probe. As a result, correlations between the nodularity of graphite and ultrasonic velocity, and between one the pearlite ratio and EC signals were obtained. These results imply that the EMAT/EC dual probe is effective for the material characterization of cast irons.

• 出版日期2010