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Influence of laser parameters on laser ultrasonic efficiency

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dc.contributor.author Forbes, A
dc.contributor.author Botha, L
dc.contributor.author Du Preez, N
dc.contributor.author Drake, T
dc.date.accessioned 2007-07-18T07:54:59Z
dc.date.available 2007-07-18T07:54:59Z
dc.date.issued 2007
dc.identifier.citation Forbes, A, et al. 2007. Influence of laser parameters on laser ultrasonic efficiency. Proceedings of SPIE, vol. 6346 en
dc.identifier.issn 0277-786X
dc.identifier.uri http://hdl.handle.net/10204/1009
dc.description http://spiedl.aip.org/ en
dc.description.abstract Laser ultrasonics is currently the optimal method for non-destructive testing of composite materials in the aerospace industry. The process is based on a laser-generated ultrasound wave which propagates inside the composite. The response at the material surface is detected and converted into a defect map across the aircraft. The design and optimisation of a laser system for this application is reviewed in this paper, together with the basic science involved. This includes the optimisation of laser parameters, such as output couplers and gas mixture, and the impact these choices have on the laser chemistry. The authors present a theory for the catalytic recombination of the gas which shows excellent agreement with experiment. Finally, an operating laser system for this application, yielding a six-fold improvement in performance over conventional laser systems, is described. en
dc.language.iso en en
dc.publisher The International Society for Optical Engineering en
dc.subject Laser ultrasound en
dc.subject TEA CO2 lasers en
dc.subject Laser chemistry en
dc.subject Short pulses en
dc.title Influence of laser parameters on laser ultrasonic efficiency en
dc.type Conference Presentation en
dc.identifier.apacitation Forbes, A., Botha, L., Du Preez, N., & Drake, T. (2007). Influence of laser parameters on laser ultrasonic efficiency. The International Society for Optical Engineering. http://hdl.handle.net/10204/1009 en_ZA
dc.identifier.chicagocitation Forbes, A, L Botha, N Du Preez, and T Drake. "Influence of laser parameters on laser ultrasonic efficiency." (2007): http://hdl.handle.net/10204/1009 en_ZA
dc.identifier.vancouvercitation Forbes A, Botha L, Du Preez N, Drake T, Influence of laser parameters on laser ultrasonic efficiency; The International Society for Optical Engineering; 2007. http://hdl.handle.net/10204/1009 . en_ZA
dc.identifier.ris TY - Conference Presentation AU - Forbes, A AU - Botha, L AU - Du Preez, N AU - Drake, T AB - Laser ultrasonics is currently the optimal method for non-destructive testing of composite materials in the aerospace industry. The process is based on a laser-generated ultrasound wave which propagates inside the composite. The response at the material surface is detected and converted into a defect map across the aircraft. The design and optimisation of a laser system for this application is reviewed in this paper, together with the basic science involved. This includes the optimisation of laser parameters, such as output couplers and gas mixture, and the impact these choices have on the laser chemistry. The authors present a theory for the catalytic recombination of the gas which shows excellent agreement with experiment. Finally, an operating laser system for this application, yielding a six-fold improvement in performance over conventional laser systems, is described. DA - 2007 DB - ResearchSpace DP - CSIR KW - Laser ultrasound KW - TEA CO2 lasers KW - Laser chemistry KW - Short pulses LK - https://researchspace.csir.co.za PY - 2007 SM - 0277-786X T1 - Influence of laser parameters on laser ultrasonic efficiency TI - Influence of laser parameters on laser ultrasonic efficiency UR - http://hdl.handle.net/10204/1009 ER - en_ZA


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