DEVELOPMENT OF A NUMERICAL MODEL TO PREDICT RESIDUAL STRESS BASED ON ACOUSTOELASTIC EFFECT USING CRITICALLY REFRACTED ULTRASONIC LONGITUDINAL (LCR) WAVES
The paper contains the development of mathematical model of the ultrasonic wave travelling through the medium which has been critically refracted known as critically refracted longitudinal wave or Creep wave. This wave is very sensitive to the residual stress induced in a medium. The mathematical model uses ultrasonic wave as a compressive stress source, which shows a relation of stress with the time travel. The result shows that when the stress is increased by 400 MPa the time travel jumps from 3187 to 3158 ns.
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