Optical and thermal parameter effects on laser-generated ultrasound

Journal Article · Sat Sep 01 00:00:00 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), Vol. 88:3; ISSN 0001-4966
• Country of Publication: United States
• Language: English

Related Subjects

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