Author(s):
V.D. Sonwane, A.S. Gour, B.P. Chandra
Email(s):
vdso11wane@gmaiLcom
Address:
School of Studies in Physics and Astrophysics, Pt. Ravishankar Shukla University, Raipur - 492010, India
School of Studies in Electronicsand Pbotonics, Pt. Ravishankar Shukla University,Raipur - 492010, India
Published In:
Volume - 27,
Issue - 1,
Year - 2014
Cite this article:
Sonwane, Gour and Chandra (2014). Laser Shock Wave- Induced Visible Mechanoluminescence from Fine Grained Metals. Journal of Ravishankar University (Part-B: Science), 27(1), pp. 102-107.
Laser Shock Wave- Induced
Visible Mechanoluminescence from Fine Grained Metals
V.D. Sonwane1*, A.S. Gour1
and B.P.
Chandra2
1 School of Studies in
Physics and
Astrophysics, Pt. Ravishankar Shukla University, Raipur - 492010, India
2School of Studies in Electronicsand
Pbotonics, Pt. Ravishankar Shukla University,Raipur - 492010, India
Corresponding Author: vdso11wane@gmaiLcom
[Received
14Marcb 2014; revised version received 13 April 2014; accepted 17 April 2014]
Abstract: The paper reports the laser
shock wave - induced visible mechanoluminescence from fine grained metals then
the front side of fine grained metal sample is irradiated with infrared laser
pulses, the ML glow is produced in back end
of the sample. On the basis of laser
shock wave - induced temperature, the expression is derived for
the temperature induced thermal stress.
Expression is derived for the correlation between the thermal stress and
the laser power density which indicates that the temperature induced thermal stress is directly related to the incident laser power
density for a given thickness of
studied metal. Expression is also derived for the dependence of the threshold
thermal stress for mechanoluminescence
on the thickness of studied metal. Finally, expression is derived fur the laser
power dependence of the ML intensity in which good agreement is found between
the theoretical and experimental results.
Keywords: Power density, radiation,
thermo-mechanical stress
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