Laser Photoacoustic Microscopy of Vickers Indentations in Titanium

Laser Photoacoustic Microscopy of Vickers Indentations in Titanium

The images of Vickers indentations in titanium are obtained by photoacoustic microscopy with piezoelectric-signal detection. It is shown that the analysis of the photoacoustic-image features makes it possible to obtain information on the nature of internal stresses in metal. In the framework of the...

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Bibliographic Details
Published in:Doklady. a journal of the Russian Academy of Sciences. Physics Vol. 63; no. 4; pp. 155 - 157
Main Authors: Glazov, A. L., Morozov, N. F., Muratikov, K. L.
Format: Journal Article
Language:English
Published: Moscow Pleiades Publishing 01-04-2018
Springer Nature B.V
Subjects:
Change detection
Classical Mechanics
Concentrators
Dependence
Diamond pyramid hardness
Image detection
Indentation
Mathematical and Computational Physics
Mechanics
Photoacoustic microscopy
Physics
Physics and Astronomy
Piezoelectricity
Residual stress
Signal detection
Theoretical
Thermal expansion
Thermoelasticity
Titanium
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Description
Summary:The images of Vickers indentations in titanium are obtained by photoacoustic microscopy with piezoelectric-signal detection. It is shown that the analysis of the photoacoustic-image features makes it possible to obtain information on the nature of internal stresses in metal. In the framework of the single-temperature model of material thermoelasticity, it is demonstrated that the detected changes in the structure of photoacoustic images may be caused by the dependence of the thermal-expansion coefficient on stresses and by the presence of stress concentrators within the indentation.
ISSN:1028-3358
1562-6903
DOI:10.1134/S1028335818040018