Proceedings ArticleDOI
Simultsonic: A Simulation Tool for Ultrasonic Inspection
TLDR
In this paper, a simulation program SIMULTSONIC is developed at CNDE to help determine and/or help optimize ultrasonic probe locations for inspection of complex components, such as very thin-walled pipes.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 initially followed by a displacement or pressure field‐based assessment for user‐specified probe positions and user‐selected component. Immersion and contact modes of inspection are available in SIMULTSONIC. The code written in Visual C++ operating in Microsoft Windows environment provides an interactive user interface. In this paper, the application of SIMULTSONIC to the inspection of very thin‐walled pipes (with 450 um 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 simu...read more
Citations
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Journal ArticleDOI
Phased Array Ultrasonic Measurement of Fatigue Crack Growth Profiles in Stainless Steel Pipes
L. Satyarnarayan,D. M. Pukazhendhi,Krishnan Balasubramaniam,C. V. Krishnamurthy,D.S. Ramachandra Murthy +4 more
TL;DR: In this paper, the authors reported experimental sizing of fatigue crack profiles initiated from artificially made circumferential starter notches in stainless steel pipes of 169 mm outer diameter and 14.33 mm thickness, which were subjected to cyclic bending loads in a four point bending load arrangement using two nondestractive evaluation (NDE) methods: (a) phased array ultrasonic technique and (b) alternating current potential drop technique.
Journal ArticleDOI
Numerical Modelling Methods for Ultrasonic Wave Propagation Through Polycrystalline Materials
S. Shivaprasad,C. V. Krishnamurthy,Abhishek Pandala,Anuraag Saini,Adithya Ramachandran,Krishnan Balasubramaniam +5 more
TL;DR: In this paper, the development at Centre for Non-destructive Evaluation, Indian Institute of Technology Madras, of three different numerical methods, namely finite element, ray tracing and finite-difference time-domain methods for investigating the propagation of ultrasonic waves through polycrystalline media.
Journal Article
A Simulation Tool for Ultrasonic Inspection
Adarsh Krishnamurthy,K. V. Mohan,Soumya Karthikeyan,C. V. Krishnamurthy,Krishnan Balasubramaniam +4 more
TL;DR: In this article, a simulation program SIMULTSONIC is developed at CNDE to help determine and/or help optimize ultrasonic probe locations for inspection of complex components, such as very thin-walled pipes.
References
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Book
Ultrasonic Testing of Materials
TL;DR: In this article, the authors describe the physical fundamentals of ultrasonics and materials up to the most sophisticated methods for nondestructive testing of solid material using ultrasonic waves for defects such as cavities, nonbonding, and strength variations.
Journal ArticleDOI
A ray model for decimetric radiowave propagation in an urban area
J.-P. Rossi,A. J. Levy +1 more
TL;DR: In this article, a ray-tracing model involving multiple reflections and diffractions is proposed to predict wideband decimetric radio wave propagation in an urban area, in which only buildings close to the vehicle are considered.