A dual-beam, injection-seeded, Nd:YAG laser has been demonstrated for detecting structural defects. This demonstration was part of an on-going project to use dual-reference-beam holographic interferometry to inspect space propulsion components for cracks, structural failures, structural changes, and gas leaks. Potential subjects for inspection include welds, duct work, casings, turbopumps, blades, composites, and ceramics. The maximum dimension of an inspected area ranges from a few centimeters to a meter. The entire optical inspection system is now ready for a demonstration application.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Optical Inspection of Space-Propulsion Components Using an Injection Seeded Nd:YAG Laser System


    Contributors:

    Publication date :

    1989


    Size :

    12 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





    A KTA Optical Parametric Oscillator Pumped by a Q-switched, Injection-seeded Nd:YAG Laser

    Chuang, T. / Kasinski, J. / Verdun, H. R. et al. | British Library Conference Proceedings | 1996


    Injection-seeded diode-pumped regenerative ring Nd:YAG amplifier for spaceborne laser ranging

    Coyle, D.B. / Kay, R.B. / Degnan, J.J. et al. | Tema Archive | 1994


    Injection Seeded/Phase-Conjugated 2-micron Laser System

    Bai, Yingxin / Yu, Jirong / Petros,M. et al. | NTRS | 2007


    Seeded Hydrogen in Nuclear Thermal Propulsion Engines

    Nikitaev, Dennis / Thomas, L. Dale | AIAA | 2020