Frequency-time characteristics of air-borne signals from laser welds

Journal of Laser Applications

Volumn 8, Issue 1, 1996, Pages 33-42

  Farson, D ^a   Hillsley, K ^b   Sames, J ^b   Young, R ^b  

^a OHIO STATE UNIVERSITY   (United States)

^b PENNSYLVANIA STATE UNIVERSITY   (United States)

Author keywords

Acoustic; Laser; Monitoring; Quality; Sensing; Weld

Indexed keywords

ACOUSTIC EMISSIONS; ACOUSTIC SIGNAL PROCESSING; ALGORITHMS; FOURIER TRANSFORM INFRARED SPECTROSCOPY; MONITORING; NEURAL NETWORKS; WELDS;

AIR BORNE SIGNALS; FREQUENCY TIME CHARACTERISTICS; LASER WELDS; PARTIAL PENETRATION WELDS; SHORT TIME FOURIER SPECTRA;

LASER APPLICATIONS;

EID: 0030081122     PISSN: 1042346X     EISSN: None     Source Type: Journal    
DOI: 10.2351/1.4745403     Document Type: Article

References (12)

1. Jon, M. C. Noncontact acoustic emission monitoring of laser beam welding. Welding J. 64(9), 43-48 (Sept. 1985).
2. Orlicke, H., Morgenstern, H. and Meyendorf, N. Process monitoring in welding with solid state lasers by sound emission analysis. Welding and Cutting 12, E269 (1991).
3. 2 laser welding of steel sheets Proc. ICALEO '94, vol. 79. Laser Institute of America, Orlando, 1994, pp. 77-85.
4. 2 laser radiation. J. Phys. D: Appl. Phys. 27, 1379-1382 (1994).
5. Farson, D., Fang, K. and Kern, J. Intelligent laser welding control. Proc. ICALEO '91, 74, Laser Institute of America, Orlando, 1991, pp. 104-112.
6. Farson, D. and Kern, J. Analysis of laser weld quality by classification of structure-borne acoustic emissions. Lasers in Engineering 4, 13 (1995).
7. Gatzweiler, W., Maischner, D., Faber, F., Derichs, C. and Beyer, E. Model of dynamic behavior in laser beam welding. Proc. SPIE 1132, 157-165 (1989).
8. Ishide, T., Nagura, Y., Matsumoto, O., Sakamoto, N., Nagashima, T. and Ylkoyama, A. Compact YAG laser welding system and its in-process monitoring in sleeving technology. Maintenance and Repair Welding in Power Plants V, jointly sponsored by EPRI and AWS, Orlando, 1994, p. 97.
9. Beyer, E., Maischner, D. and Kratzsch, Ch. A neural network to analyze plasma fluctuations with the aim to determine the degree of full penetration in laser welding. Proc. ICALEO '94, vol. 79. Laser Institute of America, 1994, pp. 51-57.
10. Arata, Y., Abe, N. and Oda, T. 'Beam Hole Behaviour During Laser Welding', Proc. ICALEO'83, Vol. 38 Laser Institute of America, 1983, pp. 59-66.
11. Klein, T., Vacanek, M., Kroos, J., Decker, I. and Simon, G. Oscillations of the keyhole in penetration laser beam welding. J. Phys. D: Appl. Phys. 27, 2023 (1994).
12. 2 laser. Proc. Laser in der Fertigung, Munchen, 1993.