Proceedings ArticleDOI
Optical Detection of Sub-Angstrom Transient Mechanical Displacements
D. Royer,E. Dieulesaint +1 more
- pp 527-530
About:
This article is published in Internaltional Ultrasonics Symposium.The article was published on 1986-01-01. It has received 82 citations till now. The article focuses on the topics: Optical parametric amplifier & Optical amplifier.read more
Citations
More filters
Journal ArticleDOI
Attenuation, scattering, and absorption of ultrasound in the skull bone
Gianmarco Pinton,Jean-François Aubry,Emmanuel Bossy,Marie Muller,Mathieu Pernot,Mickael Tanter +5 more
TL;DR: This first measurement of ultrasound absorption in bone can be used to estimate the amount of heat deposition based on knowledge of the acoustic field and it is demonstrated that only a small part of the attenuation is due to absorption inBone and that the majority of the dBs are due to reflection, scattering, and mode conversion.
Journal ArticleDOI
Time-reversed Lamb waves
R.K. Ing,Mathias Fink +1 more
TL;DR: It is shown that the use of a time-reversal mirror (TRM) allows to automatically compensate for the dispersive nature of Lamb waves and may work in pulse echo mode and allows to detect and to focus along large 2-D plates on any flaws located in the inspected area.
Journal ArticleDOI
Local vibration of an elastic plate and zero-group velocity Lamb modes
TL;DR: It is shown that ZGV Lamb modes appear in a range of Poisson's ratio about the value for which the cutoff frequency curves of modes belonging to the same family intercept, i.e., for a bulk wave velocity ratio equal to a rational number.
Journal ArticleDOI
Generating acoustic waves by laser: theoretical and experimental study of the emission source
TL;DR: In this paper, a synthesis of various theoretical models representing the acoustic displacements generated by a point laser impact is given, and then validated by interferometer measurements of ultrasonic displacement generated both under ablation conditions and under thermoelastic conditions.
Journal ArticleDOI
Local and noncontact measurements of bulk acoustic wave velocities in thin isotropic plates and shells using zero group velocity Lamb modes
TL;DR: In this paper, the authors exploited the resonance that occurs at the minimum frequency thickness product of the first order symmetric (S1) and of the second order antisymmetric (A2) Lamb modes.
References
More filters
Journal ArticleDOI
An Instrument for Making Surface Waves Visible
R. Adler,A. Korpel,P. Desmares +2 more
Journal ArticleDOI
Optical probing of the mechanical impulse response of a transducer
D. Royer,E. Dieulesaint +1 more
TL;DR: In this paper, the mechanical impulse response of a piezoelectric transducer has been plotted by using an optical interferometric heterodyne probe, which is better than 10−4 A/(Hz)1/2.
Journal ArticleDOI
Laser generation as a standard acoustic source in metals
TL;DR: In this paper, a wide-band capacitance transducer was used to detect absolute acoustic waveforms generated by laser irradiation of aluminium and mild steel samples, which were detected at the epicenter with a wide band transducers.
Journal ArticleDOI
Pulsed Photoacoustic Materials Characterization
David A. Hutchins,A.C. Tam +1 more
TL;DR: Wide bandwidth or short duration acoustic pulses may be produced by the pulsed optical irradiation of a wide range of media, and their application to flaw diagnostics, spectroscopy, and other forms of materials characterization presented.
Journal ArticleDOI
Phase sensitive laser probe for high-frequency surface acoustic wave measurements
TL;DR: In this article, a laser beam is focused to a small spot on the surface to obtain phase and amplitude infomation, where a modified knife-edge technique has been applied in combination with amplitude modulation of the laser beam and single-side-band modulation of surface wave.