Local variation in surface skimming longitudinal wave (SSLW) velocity has been measured
using a scanning acoustic microscope. A very narrow width electrical impulse has been …

An acoustic microscope operating with impulse excitation has been used to perform
measurements of the Rayleigh wave velocity by measuring the time difference between the …

Acoustic microscopy is extensively used for high-frequency imaging and material
characterization. In a focused ultrasonic transducer, the presence of edge waves from the …

Case hardening is widely applied to many critical parts in the automotive industry.
Determining the hardened case depth is presently a time-consuming destructive process …

A time–resolved acoustic microscopy has been recently developed for quantitative materials
characterization l, 2. In this method transducer output waveform v (z, t) is recorded as a …

Focused transducers of large aperture were applied to the generation and detection of
surface acoustic waves in order to characterize cast irons. The attenuation and the velocity …

The Ultrasonic Standards Group in the Manufacturing Engineering Laboratory of the
National Institute of Standards and Technology (NIST) performs research, develops …

If the velocities of longitudinal, transverse and leaky surface acoustic waves in an isotropic
material are given, the elastic constants and density of the material can be deduced …