TITLE:
Main Features of a Complete Ultrasonic Measurement Model: Formal Aspects of Modeling of Both Transducers Radiation and Ultrasonic Flaws Responses
AUTHORS:
Michel Darmon, Sylvain Chatillon
KEYWORDS:
Ultrasonic Modeling; Transducer Radiation; Defects Echoes; Calibration
JOURNAL NAME:
Open Journal of Acoustics,
Vol.3 No.3A,
September
12,
2013
ABSTRACT:
This paper aims at describing the theoretical fundamentals of a
reciprocity-based ultrasonic measurement model. This complete inspection
simulation can be decomposed in two modeling steps, one dedicated to transducer
radiation and one to flaw scattering and echo synthesis. The physical meaning
of the input/output signals used in these two modeling tools is defined and the
theoretical principles of both field calculation and echo computation models
are then detailed. The influence on the modeling results of some changes in the
simulated configuration (as the incident angle) or some input signal parameters
(like the frequency) are studied: it is thus theoretically established that the
simulated results can be compared between each other in terms of amplitude for
numerous applications when changing some inspection parameters in the simulation
but that a calibration for echo calculation is generally required.