Patent
1975-07-24
1977-09-20
Corbin, John K.
354286, G03H 102, G02B 702, G03B 506
Patent
active
040493369
ABSTRACT:
An improved holographic instrument for evaluating the structural integrity of a load-bearing structure by recording on a holographic recording medium two successive holograms of the structure under differing stress conditions to produce a holographic interferogram containing information defining a deformation fringe pattern representing the deformations in the structure resulting from the change in stress conditions. A holographic recording unit for the optical signature instrument and for general holographic recording use.
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Staselko et al., "Production of High-Quality Holograms of Three-Dimensional Diffuse Objects with the Use of Single Mode Ruby Lasers", Optics & Spectroscopy, vol. 25, 12-1968, pp. 505-507.
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Bhuta Pravin G.
Jacoby Jerold L.
Tierney William S.
Wright James E.
Connors John J.
Corbin John K.
Nyhagen Donald R.
Oser Edwin A.
Punter Wm. H.
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