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A Simulation Tool for Ultrasonic Inspection  

Krishnamurthy, Adarsh (Center for Nondestructive Evaluation, Department of Mechanical Engineering, Indian Institute of Technology)
Mohan, K.V. (Center for Nondestructive Evaluation, Department of Mechanical Engineering, Indian Institute of Technology)
Karthikeyan, Soumya (Center for Nondestructive Evaluation, Department of Mechanical Engineering, Indian Institute of Technology)
Krishnamurthy, C.V. (Center for Nondestructive Evaluation, Department of Mechanical Engineering, Indian Institute of Technology)
Balasubramaniam, Krishnan (Center for Nondestructive Evaluation, Department of Mechanical Engineering, Indian Institute of Technology)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.26, no.3, 2006 , pp. 153-161 More about this Journal
Abstract
A simulation program SIMULTSONIC is under development at CNDE to help determine and/or help optimize ultrasonic probe locations for inspection of complex components. SIMULTSONIC provides a ray-trace based assessment for immersion and contact modes of inspection. The code written in Visual C++ operating in Microsoft Windows environment provides an interactive user interface. In this paper, a description of the various features of SIMULTSONIC is given followed by examples illustrating the capability of SIMULTSONIC to deal with inspection of canonical objects such as pipes. In particular, the use of SIMULTSONIC in the inspection of very thin-walled pipes (with 450 urn wall thickness) is described. Ray trace based assessment was done using SIMULTSONIC to determine the standoff distance and the angle of oblique incidence for an immersion mode focused transducer. A 3-cycle Hanning window pulse was chosen for simulations. Experiments were carried out to validate the simulations. The A-scans and the associated B-Scan images obtained through simulations show good correlation with experimental results, both with the arrival time of the signal as well as with the signal amplitudes.
Keywords
Ultrasonic Inspection; Simulation; Ray-Tracing;
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