Monitoring material grain size by laser-generated ultrasound
Aharoni, A. ; Tur, M. ; Jassby, K. M.
Woodbury, NY : American Institute of Physics (AIP)
Published 1991
Woodbury, NY : American Institute of Physics (AIP)
Published 1991
| ISSN: |
1077-3118
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|---|---|
| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
A noncontact, nondestructive, laser-based method for remote monitoring of material grain size is described. A surface acoustic wave surge, generated in the material under test by a short, high-power laser pulse, is detected optically. The leading-edge rise time of the acoustic signal is found to relate to the material grain size through frequency-dependent scattering. In assuming a Rayleigh scattering model, a good correlation with metallurgical measurements is obtained in steel specimens.
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| Type of Medium: |
Electronic Resource
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| URL: |