Optical parameter effects on laser generated ultrasound for microstructure characterization
Conference
·
OSTI ID:6824398
Under appropriate conditions a significant feature of the laser generated elastic waveform in the thermoelastic regime is a precursor (sharp spike) signaling the arrival of the longitudinal wave. This paper shows that the observed precursor can be understood through the use of one-dimensional models that account for optical penetration and thermal diffusion into the material. Experimental results are compared with a two-dimensional analytic calculation including optical penetration. 8 refs., 4 figs.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6824398
- Report Number(s):
- EGG-M-88053; CONF-881081-2; ON: DE89005193
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
ACOUSTIC TESTING
ALLOYS
CRYSTAL STRUCTURE
DIFFUSION
DISPLACEMENT RATES
ELASTICITY
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
LASERS
MATERIALS TESTING
MECHANICAL PROPERTIES
MICROSTRUCTURE
NONDESTRUCTIVE TESTING
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SOUND WAVES
STAINLESS STEELS
STEELS
TENSILE PROPERTIES
TESTING
THERMAL DIFFUSION
THERMOELASTICITY
ULTRASONIC TESTING
ULTRASONIC WAVES
WAVE FORMS
360103* -- Metals & Alloys-- Mechanical Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
ACOUSTIC TESTING
ALLOYS
CRYSTAL STRUCTURE
DIFFUSION
DISPLACEMENT RATES
ELASTICITY
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
LASERS
MATERIALS TESTING
MECHANICAL PROPERTIES
MICROSTRUCTURE
NONDESTRUCTIVE TESTING
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SOUND WAVES
STAINLESS STEELS
STEELS
TENSILE PROPERTIES
TESTING
THERMAL DIFFUSION
THERMOELASTICITY
ULTRASONIC TESTING
ULTRASONIC WAVES
WAVE FORMS