Development of a Flexible Laser Ultrasonic Probe

[+] Author and Article Information
Sandra N. Hopko

Exxon, Houston, Texas

I. Charles Ume, Dathan S. Erdahl

School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332

J. Manuf. Sci. Eng 124(2), 351-357 (Apr 29, 2002) (7 pages) doi:10.1115/1.1379369 History: Received December 01, 1998; Revised April 01, 2000; Online April 29, 2002
Copyright © 2002 by ASME
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Lott, L. A., Johnson, J. A., and Smartt, H. B., 1984 “Real-time Ultrasonic Sensing of Arc Welding Processes,” Proceedings of the Symposium on Nondestructive Evaluation Application and Materials Processing, American Society for Metals, Metals Park, Ohio, pp. 13–22.
Carlson,  N. M., and Johnson,  J. A., 1988a, “Ultrasonic Sensing of Weld Pool Penetration,” Weld. J. (Miami), 67, No. 11, pp. 239s–246s.
Stroud, R., 1989, “Problems and Observations whilst Dynamically Monitoring Molten Weld Pools using Ultrasound,” 31 , No. 1, pp. 29–32.
Fenn,  R., 1989, “Monitoring and Controlling Welding by Ultrasonic Means,” Br. J. Non-Destr. Test., 31, No. 2, pp. 82–86.
Choi,  M. S., and Yang,  M. S., 1991, “Quality Evaluation and Control of End Cap Welds in PHWR Fuel Elements by Ultrasonic Examination,” J. Nucl. Mater., 178, pp. 321–327.
Yang, J., Sanderson, T., Graham, G., and Ume, C., 1994, “Ultrasonic Weld Penetration Depth Sensing with Laser Phased Array,” ASME International Mechanical Engineering Conference and Exposition, Chicago, IL, Nov. 14–18, PED-v 68-1, pp. 245–254.
Yang,  J., Sanderson,  T., Graham,  G., and Ume,  C., 1996, “Laser Phased Array Measurement of Simulated Solidified Weld Penetration Depth,” ASME J. Manuf. Sci. Eng., 118, pp. 266–271.
Katz, J. M., 1982, “Ultrasonic Measurement and Control of Weld Penetration,” M.S. Thesis, M.I.T. Cambridge, MA.
Fortunko, C. M., Schramm, R. E., Moulder, J. C., and McColskey, J. D., 1984, “Electromagnetic-Acoustic-Transducer/Synthetic-Aperature System for Thick-Weld Inspection,” Natl. Bur. Stand. Circ. (U. S.), pp. 1–96.
Carlson,  N. M., , 1992, “Ultrasonic NDT Methods for Weld Sensing,” Mater. Eval., 50, No. 11, Nov., pp. 1338–1343.
Ogilvy,  J. A., and Temple,  J. A. G., 1990, “Theoretical Assessment of the Errors Involved in Ultrasonic Location and Sizing of Molten Weld Pools,” Ultrasonics, 28, No. 6, pp. 375–381.
Graham,  G. M., and Ume,  C., 1997, “Automated System for Laser Ultrasonic Sensing of Weld Penetration,” Mechatronics, 7, No. 8, pp. 711–721.
Graham,  G. M., Ume,  C., and Hopko,  S. N., 2000, “Laser Ultrasonic Sensing of Penetration Depth in Robotic Welding: Simulated Liquid Welds,” ASME J. Manuf. Sci. Eng., 122, No. 1, pp. 70–75.
Dewhurst,  R. J., Hutchins,  D. A., Palmer,  S. B., and Scruby,  C. B., 1982, “Quantitative Measurements of Laser-generated Acoustic Waves,” J. Appl. Phys., 53, pp. 4064–4071.
Jones, M. G., 1989, “Laser Materials Processing with a Lensless Fiber Optic Output Coupler,” U.S. Patent #4799755.
Doubrava, J. H., Ticknor, G. W., and Jones, M. G., 1990, “Implementation of Laser Welding for Lamp Leads,” ICALEO, pp. 400–410.
Coulter, L. E., 1984, “Laser Welding Apparatus,” U.S. Patent #4578554.
Kocher, R. C., 1985, “Fiber Optic Beam Delivery System for High-Power Laser,” U.S. Patent #4707073.
Jones, M. G., and Georgalas, G., 1987, “Apparatus and Method for Performing Material Processing through a Fiber Optic,” U.S. Patent #4676586.
Jarzynski,  J., and Berthelot,  Y. H., 1989, “The Use of Optical Fibers to Enhance the Laser Generation of Ultrasonic Waves,” J. Acoust. Soc. Am., 85, No. 1, pp. 158–162.
Yang,  J., DeRidder,  N., Ume,  C., and Jarzynski,  J., 1993, “Noncontact Optical Fiber Phased Array Generation of Ultrasound for Nondestructive Evaluation of Materials and Processes,” Ultrasonics, 31, No. 6, pp. 387–394.
Yang,  J., and Ume,  C., 1994, “Performance Evaluation of Fiber Array for NDE Application,” Res. Nondestruct. Eval., 5, No. 3, pp. 175–190.
Burger,  C. P., Schumacher,  N. A., Duffer,  C. E., and Knab,  T. D., 1993, “Fiber-Optic Techniques for Generating and Detecting Ultrasonic Waves for Quantitative NDE,” Opt. Lasers Eng., 19, pp. 121–140.
Scruby, C. B., and Drain, L. E., 1990, Laser Ultrasonics: Techniques and Applications, Adam Hilger, New York.
McNab,  A., and Campbell,  M. J., 1987, “Ultrasonic Phased Arrays for Nondestructive Testing,” NDT Int., 20, No. 8, pp. 333–337.
Bruinsma,  A. J. A., and Vogel,  J. A., 1988, “Ultrasonic Non-contact Inspection System with Optical Fiber Methods,” Appl. Opt., 27, No. 22, pp. 4690–4695.
Noroy, M., Royer, D., and Fink, M., 1992, “Focusing and Steering of Ultrasonic Waves Generated by a Sixteen Laser Source Array,” Society of Photo-Optical Instrumentation Engineers, New Developments in Ultrasonic Transducers and Transducer Systems, 21–22 July, San Diego, CA.
Ing,  R. K., Fink,  M., and Gires,  F., 1992, “Directivity Patterns of a Moving Thermoelastic Source in Solid Media,” IEEE Trans. Ultrason. Ferroelectr. Freq., 39, No. 2, pp. 285–292.
Verboven,  P., 1994, “Pulsed Kilowatt Nd:Yag Laser with Fiber Optic Delivery,” SPIE, 2206, pp. 416–425.


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Laser ultrasonic probe (Hopko and Ume, 1998)3
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Phased array (Hopko and Ume 1998)3
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Optical fiber phased array
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Theoretical beam steering for ablative phased array (longitudinal wave)
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Experimental apparatus for measuring directivity patterns with a phased array
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Pinducer alignment device (side view of half-cylinder specimen)
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Typical wave form (single fiber source ablation @50 deg, 1 mm fiber)
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Longitudinal wave forms at 50 deg for (a) 7-fiber bundle, disk source and (b) 3 source (line) ablative phased array
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Ultrasound directivity (longitudinal wave, single fiber source) for (a) thermoelastic generation and (b) ablation
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Phased array directivity 3 bundled sources. (a) thermoelastic disk sources (ϕ=67 deg), (b) ablation disk sources (ϕ=41 deg) and (c) ablation line sources (ϕ=41 deg)
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Phased array directivity 3 bundled, ablation line sources (ϕ=49 deg)
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Real-time weld monitoring and quality control implementation (Hopko and Ume, 1998),3



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