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A Review of Recent Developments in the Holographic Observation of Disbonds
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English
Abstract
Holographic techniques have been employed to observe nondestructively the presence of disbonds or bond degradation in adhesives of thin and thick laminates. It is shown that when panels of honeycomb aircraft skin are exposed to prolonged humidity, the time history of bond weakening can be holographically observed as the humidity attack proceeds inward from the edges. While heat stressing is suitable to the holographic observation of disbonds in “thin” laminates, it generally fails in thick structures. A second technique of exciting resonance patterns of disbonds and observing them with time-averaged holography is suitable for use with thicker materials. Various mode patterns of disbonds have been observed in “thick” laminates of the ceramic-fiberglass epoxy composites considered for use in applications such as missile radomes.
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Kisatsky, P. and Barbarisi, M., "A Review of Recent Developments in the Holographic Observation of Disbonds," SAE Technical Paper 740258, 1974, https://doi.org/10.4271/740258.Also In
References
- Leith E. N. Upatnicks J. “Reconstructed Wavefronts and Communication Theory.” Jrl. Opt. Soc. Amer. 52 1962 1123
- Leith E. N. Upatnicks J. “Wavefront Reconstruction With Continuous Tone Objects.” Jrl. Opt. Soc. Amer. 53 1963 1377
- Leith E. N. Upatnicks J. “Wavefront Reconstruction With Diffused Illumination and Three Dimensional Objects.” Jrl. Opt. Soc. Amer. 54 1964 1295
- Collier R. Burckhardt C. Lin L. “Optical Holography.” New York Academic Press 1971
- Brooks R. E. Heflinger L. O. Wuerker R. F. “Interferometry With a Holographically Reconstructed Comparison Beam.” Appl. Phys. Lett. 7 248 1965
- Horman M. H. “An Application of Wavefront Reconstruction to Interferometry.” Appl. Optics 4 333 1965
- Stetson K. Powell R. “Hologram Interferometry.” Jrl. Opt. Soc. Amer. 56 1966 1161
- Brown G. M. Grant R. M. Stroke G. W. “Theory of Holographic Interferometry.” Jrl. Acoust. Soc. Amer. 45 1969 1166
- Powell R. Stetson K. “Interferometric Vibration Analyses by Wavefront Reconstruction.” Jrl. Opt. Soc. Amer. 55 1965 1593
- Monahan M. Bromley K. “Vibration Analysis by Holographic Interferometry.” Jrl. Acoust. Soc. Amer. 44 1968 1225
- Grant R. Brown G. M. “Holographic Non-destructive Testing.” Materials Evaluation 27 29 1969
- Wells D. R. “NDT of Sandwich Structures by Holographic Interferometry.” Materials Evaluation 27 225 1969
- Waters J. P. “Holographic Inspection of Solid Propellant to Liner Bonds.” Appl. Optics 10 1971 2364
- Vest C. M. Leith E. N. et al. “Investigations of Holographic Testing Techniques.” Univ. of Michigan, Final Report to ARPA Contract DAAG46-69-C-0017 December 1971
- Barbarisi M. Chisolm B. Kisatsky P. “Nondestructive Inspection of Adhesive Bonds Using Holographic Techniques.” Picatinny Arsenal Technical Report 4419 October 1972
- Kinsler L. Grey A. “Fundamentals of Acoustics.” New York John Wiley and Sons, Inc. 1965
- Olson H. “Elements of Acoustical Engineering.” Princeton, N.J. D. Van Nostrand 1955
- Erf R. K. Waters J. Aas H. “Bond Inspection by Dynamic Time Average Interferometric Holography of Ultrasonically Excited Plates.” Jrl. Acoust. Soc. Amer. 47 1970 968
- Aas H. G. Erf R. Waters J. “Investigation to Determine the Feasibility of Employing Laser Beam Holography for the Detection and Characterization of Bond Defects in Composite Material Structures.” United Aircraft Research Laboratories Report NASA CR-111836, Contract NAS 1-9926 February 1971