This work aims at quantitative analysing the effect of different microstructures on the velocity
at stress-free and stress coefficient (K) of longitudinal critical refraction (LCR) wave in …

This paper uses a 3D thermo-mechanical finite element analysis to evaluate welding
residual stresses in austenitic stainless steel plates of AISI 304L. The finite element model …

The non-destructive testing of austenitic stainless steel welds of the primary coolant pi**
system is a significant problem for the nuclear industry. Ultrasonic techniques would be very …

In this, a method to measure welding residual stress in butt-welded joints of carbon steel
plates using longitudinal critically refracted wave (L cr wave) is proposed. Cross-correlation …

Longitudinal critically refracted (LCR) waves are considered bulk longitudinal waves and
penetrate into an effective depth beneath the surface parallel to the material surface. Such …

Internal stress in structural steel members is an important parameter for steel structures in
their design, construction, and service stages. However, it is hard to measure via traditional …

The ultrasonic residual stresses measurement is based on the acoustoelastic effect that
refers to the change in velocity of the elastic waves when propagating in a stressed media …

Multipass welds made in austenitic stainless steel, in the primary circuit of nuclear power
plants with pressurized water reactors, are characterized by an anisotropic and …

Based on critical refraction longitudinal wave (L cr wave) acoustoelastic theory, correction
method for grain size effect on surface stress measurement was discussed in this paper …

A finite element modeling approach of ultrasonic propagation combined with a description of
the microstructure at the scale of the grains has been implemented. The simulations seek to …