Title :
A model for predicting ultrasonic fields in complex structures and configurations
Author :
Lhemery, A. ; Gengembre, N. ; Mahaut, S. ; Calmon, P.
Author_Institution :
CEA, Centre d´´Etudes Nucleaires de Saclay, Gif-sur-Yvette, France
Abstract :
Quantitative prediction of the field radiated by a transducer into a given piece is a fundamental tool for inspection qualification and for understanding actual results. Pieces of complex structure are often involved (e.g. welds, cladded components) leading to complex wavepaths including reflection and mode-conversion. The model Champ-Sons is developed at the French Atomic Energy Commission for ultrasonic field prediction. It is semi-analytical for computer efficiency. The theory is first described. The modelling of transducer behaviour is presented for typical transducers used in NDT. Definition of the piece by CAD software is discussed
Keywords :
ultrasonic materials testing; CAD software; Champ-Sons model; NDT transducers; cladded components; complex configurations; complex structures; complex wavepaths; computer efficiency; geometrical optics approximation; inspection qualification; pencil method; piece definition; quantitative prediction; semi-analytical model; transducer radiated field; ultrasonic fields prediction; welds;
Conference_Titel :
New Applications in Modelling and Inversion Techniques for Non-Destructive Testing (Ref. No. 1999/020), IEE Colloquium on
Conference_Location :
London
DOI :
10.1049/ic:19990108
