Optical and thermal parameter effects on laser-generated ultrasound

Journal Article · Sat Sep 01 04:00:00 EDT 1990 · Journal of the Acoustical Society of America; (United States)

DOI:https://doi.org/10.1121/1.400306· OSTI ID:7016575

Telschow, K L ^[1]; Conant, R J ^[2]

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1. Idaho National Engineering Lab., Idaho Falls (United States)
2. Montana State Univ., Bozeman (United States)

The use of a pulsed laser source for the generation of elastic waves in materials is investigated, taking into account optical penetration into the material. Under appropriate conditions, a significant feature of the laser-generated elastic waveform is a precursor (sharp spike) signaling the arrival of the longitudinal wave. The shape of this precursor signal is strongly dependent on the optical and thermal properties of the material. This paper shows that the observed precursor can be understood through the use of models that account for optical penetration and thermal diffusion into the material.

• DOE Contract Number: AC07-76ID01570
• OSTI ID: 7016575
• Journal Information: Journal of the Acoustical Society of America; (United States), Journal Name: Journal of the Acoustical Society of America; (United States) Vol. 88:3; ISSN JASMA; ISSN 0001-4966
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420500* -- Engineering-- Materials Testing
ABSORPTION
ACOUSTIC TESTING
CERAMICS
CRYSTAL STRUCTURE
DATA
DIFFUSION
ELASTICITY
ELEMENTS
HEAT SOURCES
INFORMATION
LASERS
MATERIALS
MATERIALS TESTING
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
NONDESTRUCTIVE TESTING
NUMERICAL DATA
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
POINT SOURCES
RADIATION SOURCES
SCATTERING
SOLIDS
SORPTION
SOUND WAVES
TENSILE PROPERTIES
TESTING
THEORETICAL DATA
THERMAL DIFFUSION
THERMODYNAMIC PROPERTIES
THERMOELASTICITY
ULTRASONIC TESTING
ULTRASONIC WAVES
WAVE FORMS