Performance of UT Creeping Waves in Crack Sizing
Crack sizing is of fundamental importance for achieving safety and reliability in design and validation of mechanical structures, especially considering wide-spread and well-known fatigue design methodologies such as the Damage Tolerant Approach. From this point of view, the present paper analyses the so-called Creeping Waves, sub-surface longitudinal waves sometimes suggested in the literature as particularly useful in crack sizing. To this aim, experimental results obtained from a dedicated sample block have been compared with suitable numerical simulations carried out by means of both CIVAnde(r) v. 9.1 and WAVE2000(r) Pro v.2.2. From the results, some advantages of the CW technique remain confirmed, but some strong limits of their application to crack sizing could also be defined.
ultrasonic testing creeping waves crack sizing
Michele Carboni Michele Sangirardi
Department of Mechanical Engineering, Politecnico di Milano Via La Masa 34, I-20156 Milano, Italy
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
555-561
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）