Experimental study on the characteristics of the frequency of acoustic wave induced by high power laser
-
1.
Jiangsu Provincial Key Laboratory for Science an Technology of Photon Manufacturing, Jiangsu University, Zhenjiang 212013, China
-
Corresponding author:
ZHANG Yong-kang, ykzhang@ujs.edu.cn
;
-
Received Date:
2008-11-26
Accepted Date:
2008-12-15
-
Abstract
In order to study the characteristics of the frequency of acoustic waves induced by high power laser, the acoustic waves were received by a wide band acoustic sensor. Then they were imported to MATLAB and calculated to obtain the power spectral density (PSD). After the analysis of the PSD of the acoustic waves induced by Nd:glass laser with water or K9 optical glass under different conditions as overlay,the frequencies at the maximum peak of the PSD were obtained. It is discovered that the frequencies are strongly influenced by different overlay or the overlay under different conditions, instead of the laser power density. The outcome provides important guiding significance to the realization of the on-line monitoring of the laser shock processing.
-
-
References
|
[1]
|
OCANA J L,MOLPECERES C,MORALES M,et al.A model for the coupled predictive assessment of plasma expansion and material compression in laser shock processing applications[J].Proc SPIE,2000,3885:252-263. |
|
[2]
|
COUTURIER S,de RESSÉGUIER T,HALLOUIN M,et al.Shock proflie induced by short laser pulses[J].J A P,1996,79(12):9338-9342. |
|
[3]
|
OCANA J L,MOLPECERES C,PORRO J A,et al.Experimental assessment of the influence of irradiation parameters on surface deformation and residual stresses in laser shock processed metallic alloys[J].Applied Surface Science,2004,238(9):501-505. |
|
[4]
|
MOLPECERES C,PORRO J A,GOMEZ G,et al.Experimental assessment of materials treatment by laser shock processing[J].Optica pura y Aplicada,2003,36(1):51-57. |
|
[5]
|
SUH U W,JAMES D R.Laser shock peening quality assurance by acoustic analysis:United States,0030062349[P].2003-04-03. |
|
[6]
|
BRIAN M D.Real time laser shock peening quality assurance by natural frequency analysis:United States,006914215[P].2005-06-05. |
|
[7]
|
BRODDUS J,Jr.Laser shock peening system with time-of-flight monitoring:United States,0070119824[P].2005-11-30. |
|
[8]
|
ZHANG Y,ZANG S,ZANG X,et al.Investigation of the surface qualities of laser shock processed zones and the effect on fatigue life of aluminum alloy[J].Surface and Coatings Technology,1997,92(1):104-109. |
|
[9]
|
DU G H,ZHU Zh M,GONG X F.Basic theory of acoustics[M].Nanjing:Nanjing University Press,2001:107(in Chinese). |
|
[10]
|
KIM T,LEE J M,CHO S H,et al.Acoustic emission monitoring during laser shock cleaning of silicon wafers[J].Optics and Lasers in Engineering,2005,43(9):1010-1020. |
|
[11]
|
CONESA S,PALANCO S,LASERNA J J.Acoustic and optical emission during laser-induced plasma formation[J].Spectrochimica Acta,2004,B59(9):1395-1401. |
-
-
Proportional views
-
Map
DownLoad: