"Cnitoshi MIKI,Ryohei ONISHI,Takumi KUBOTA,Takeshi HANJI","RADIATION CHARACTERISTICS OF ULTRASONIC TIP ECHO AND ITS APPLICATION TO DETECT FATIGUE CRACK CLOSURE IN WELDING RESIDUAL STRESS FIELDS",,"JSCE","“y–ØŠw‰ï","Vol. 66","No. 2","pp. 219-228",2010,Apr.