Application of nonlinear ultrasonics to inspection of stainless steel for dry storage

Ulrich, Timothy James II¹  Anderson, Brain E.¹  Remillieux, Marcel C.¹  Le Bas, Pierre -Yves¹  Pieczonka, Lukasz¹ 

[1] Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

关键词: nondestructive evaluation;    nonlinear elasticity;    time reversal;    imaging;   

DOI  :  10.2172/1215814
RP-ID  :  LA-UR--15-27382
PID  :  OSTI ID: 1215814

美国|英语

来源: SciTech Connect

【 摘 要 】

This report summarized technical work conducted by LANL staff an international collaborators in support of the UFD Storage Experimentation effort. The focus of the current technical work is on the detection and imaging of a failure mechanism known as stress corrosion cracking (SCC) in stainless steel using the nonlinear ultrasonic technique known as TREND. One of the difficulties faced in previous work is in finding samples that contain realistically sized SCC. This year such samples were obtained from EPRI. Reported here are measurements made on these samples. One of the key findings is the ability to detect subsurface changes to the direction in which a crack is penetrating into the sample. This result follows from last year's report that demonstrated the ability of TREND techniques to image features below the sample surface. A new collaboration was established with AGH University of Science and Technology, Krakow, Poland.