Abstract

It was undertaken to apply holographic techniques to char- acterize the dynamic behavior and structure of an advanced graphite-epoxy composite part and its ancillary mounting geometry. Holograms of the vibrational modes of the structure are used to accurately map the nodes, maxima, minima, and geometry of the induced motion. Holograms of the displacement patterns of mechanical and thermally induced stress in the structure are also used to map the location and extent of nonuniformities, discontinuities, and micro-structural defects in the volume and mounting of the composite material. Holographic data was imaged by a photo-thermoplastic based holocamera system configured for off-axis holograms and coupled to high resolution video capture for subsequent image analysis.

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  1. H. Fein, "The Application of Holographic Interferometry to the Characterization of the Dynamics of a Complex Bonded Structure," Proc. SPIE, Adhesives Engineering, 1999, 248-253, (1993).
  2. H. Fein, "Holographic Evaluation of the Material and Dynamic Characteristics of Bonded Compliant Structures," Proceedings of International Conference on the Applications of Lasers and Electro-Optics, (ICALEO) Laser Materials Processing 77, 604-610 (1993).
  3. H. Fein, "An Application of Holographic Interferometry to Evaluate the Material Characteristics of Cast Compliant Structures," in Review of Progress in Quantitative Nondestructive Evaluation, Vol. 15, D.O. Thompson and D. E. Chimenti, eds., (Plenum, New York, 1996).
  4. H. Fein, "Holographic Interferometry Applied to the Characterization and Analysis of the Dynamic and Modal Behavior of Complex Circuit Board Structures," Proc. SPIE, Practical Holography VIII 2176, 256-261 (1994).
  5. Howard Fein, "Applied Holographic Interferometry as a Nondestructive Method for the Dynamic and Modal Analysis of an Advanced Graphite Epoxy Composite Structure," in Review of Progress in Quantitative Nondestructive Evaluation, Vol. 16, D.O. Thompson and D.E. Chimenti, eds., (Plenum, New York, 1997).
  6. C. M. Vest, Holographic Interferometry, (Wiley, New York, 1979), p. 227.
  7. C. M. Vest, Holographic Interferometry, (Wiley, New York, 1979), pp. 179-183.
  8. C. M. Vest, Holographic Interferometry, (Wiley, New York, 1979), p. 229.
  9. "Instant Holocamera," (Newport Corp., Fountain Valley, Ca., 1981).
  10. C. M. Vest, Holographic Interferometry, (Wiley, New York, 1979), p. 155, 180.

Other

H. Fein, "The Application of Holographic Interferometry to the Characterization of the Dynamics of a Complex Bonded Structure," Proc. SPIE, Adhesives Engineering, 1999, 248-253, (1993).

H. Fein, "Holographic Evaluation of the Material and Dynamic Characteristics of Bonded Compliant Structures," Proceedings of International Conference on the Applications of Lasers and Electro-Optics, (ICALEO) Laser Materials Processing 77, 604-610 (1993).

H. Fein, "An Application of Holographic Interferometry to Evaluate the Material Characteristics of Cast Compliant Structures," in Review of Progress in Quantitative Nondestructive Evaluation, Vol. 15, D.O. Thompson and D. E. Chimenti, eds., (Plenum, New York, 1996).

H. Fein, "Holographic Interferometry Applied to the Characterization and Analysis of the Dynamic and Modal Behavior of Complex Circuit Board Structures," Proc. SPIE, Practical Holography VIII 2176, 256-261 (1994).

Howard Fein, "Applied Holographic Interferometry as a Nondestructive Method for the Dynamic and Modal Analysis of an Advanced Graphite Epoxy Composite Structure," in Review of Progress in Quantitative Nondestructive Evaluation, Vol. 16, D.O. Thompson and D.E. Chimenti, eds., (Plenum, New York, 1997).

C. M. Vest, Holographic Interferometry, (Wiley, New York, 1979), p. 227.

C. M. Vest, Holographic Interferometry, (Wiley, New York, 1979), pp. 179-183.

C. M. Vest, Holographic Interferometry, (Wiley, New York, 1979), p. 229.

"Instant Holocamera," (Newport Corp., Fountain Valley, Ca., 1981).

C. M. Vest, Holographic Interferometry, (Wiley, New York, 1979), p. 155, 180.

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