Nondestructive Evaluation of Austenitic Stainless Steel Using CIC-MFL and LIHaS

作者：Jun Jongwoo; Choi Myungki; Lee Jinyi^*

来源：IEEE Transactions on Magnetics, 2011, 47(10): 3959-3962.

DOI：10.1109/TMAG.2011.2148100

• Crack detection
• electromagnetic fields
• Hall effect device
• nondestructive testing

Austenitic stainless steels (A-SS) are extensively used in widespread industrial and technological applications due to their good corrosion resistance combined with their relatively high strength, toughness, and stiffness. However, sometimes a small amount of partial magnetization is generated in A-SS due to imperfect final heat treatments and mechanical processing, such as rolling and welding. These partially magnetized regions may be misidentified as a crack when tested using conventional nondestructive methods. This paper presents a nondestructive evaluation approach using a linearly integrated Hall sensor array (LIHaS) and a combined induced current and magnetic flux leakage (CIC-MFL) method in order to ensure reliable crack inspections for A-SS.

• 出版日期2011-10