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 …

When the material deforms elastically or plastically, residual stresses introduced within the
material. We know that not a single material, manufactured and treated parts, and structures …

An improved ultrasonic method was developed theoretically and experimentally for plane
stress measurement using critically refracted longitudinal (LCR) waves. Cruciform specimen …

To facilitate a surface/subsurface fatigue damage awareness in the early stage, a signal-
steady, thickness-independent, nondestructive method is proposed based on a critically …

Conventional critically refracted longitudinal (L CR) wave technique seriously relies on the
first critical angle (θ CR), showing poor adaptability to the wave velocity variations of …

The absolute stress in structural steel members is an important indicator of the performance
of steel structures. Among the existing non-destructive testing (NDT) methods, ultrasonic …

Acoustoelasticity has been widely studied for stress measurements in metallic materials,
such as steel and aluminum, mainly for structural health evaluation and monitoring. Applying …

Ultrasonic techniques have been widely used to detect the percentage of vermicular
graphite, defects, etc. in vermicular graphite cast iron. The linear ultrasonic velocity method …

The uniaxial absolute stress in steel members is a vital indicator for evaluating the
performance of steel structures. Non-destructive ultrasonic detection is widely applied in the …

This article aims to develop a stress-sensing method for a pressurized vessel based on
subsurface longitudinal (SSL) waves confined in a specific waveform by using 1-3 …