超音波底面エコー法における音場特性と溶射皮膜のはく離検出精度に関する研究

概要

論文の詳細を見る
Recently, a nondestructive inspection method using ultrasound to detect the delamination of the thermal sprayed coating was proposed and its usefulness is going to be recognized in the industrial field of the thermal spraying. However, the optimum testing conditions of the method under which precise testing can be carried out have not been clarified. In this study, the effects of an ultrasonic field from a focused probe and testing conditions on the detection accuracy of the delamination of the sprayed coating are investigated. Furthermore, using a sprayed-coating model with artificial defects, which comprises acrylic plates, the detectable dimension of delamination by the ultrasonic testing method developed is discussed. As the result of testing of model speciman and thermal sprayed material, it was seen that, in case the proper testing conditions are selected, the delamination of sprayed coating with a size larger than 1 mm approximately can be detected, and the applicability of the testing method to practical use was confirmed.
一般社団法人日本機械学会の論文
1996-04-25