The application of holography to the comparison of cylinder bores

Archbold, E.; Burch, J. M.; Ennos, A. E.

doi:10.1088/0950-7671/44/7/301

Cited by 29 publications

(9 citation statements)

References 5 publications

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“…At the same time these objects should have identical shapes, apart from the change to be measured, down to a size that can be resolved by the viewing of aperture E. One possible application of hologram interferometry is to compare manufactured components, and fringes are obtained only when their surface structures match down to the scale of size that is just resolved; this means that they should be smooth down to this size. If not, fringes may be obtained by viewing the objects at an angle of incidence high enough for the surface irregularities not to be resolved [12].…”

Section: Conditions Applied To Objectmentioning

confidence: 99%

Fringe Localization and Visibility in Classical Hologram Interferometers

Steel

1970

Optica Acta: International Journal of Optics

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A descriptive account of both classical and hologram interferometry shows many common features. In each, the position of fringe localization is found by a similar ray construction and the fringe visibility is derived from the amplitude distribution in a diffraction pattern near focus. IntroductionThe van Cittert-Zernike theorem [1] leads to the useful result that the theory of fringe visibility in an interferometer with an extended source is the same as the theory of diffraction of coherent radiation. Since the recent technique of hologram interferometry [2, 3] is an example of the diffraction and interference of coherent waves, it might be expected to have a theory equivalent to that of classical interferometry. The descriptive treatment given here points out this equivalence and shows that the results obtained by other, more mathematical theories [4][5][6] can be derived, or at least made plausible, by a simple physical argument.

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Section: Conditions Applied To Objectmentioning

confidence: 99%

Fringe Localization and Visibility in Classical Hologram Interferometers

Steel

1970

Optica Acta: International Journal of Optics

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“…The processes for studying vibration and deformation holographically [12][13][14][15][16] are readily studied by reference to the equivalent interferometer. In this case the interferometer is essentially notional, and the difficulty of building it illustrates with great clarity some of the limitations of these holographic techniques.…”

Section: The Equivalent Interferometer For Live and Frozen Fringesmentioning

confidence: 99%

The 'Equivalent Interferometer' in Holography

Rogers

1970

Optica Acta: International Journal of Optics

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“…The foil gauge had been in use since the early 1950s and semi‐conductor gauges appeared in the early 1960s. Photoelastic techniques were well established for 2‐D and 3‐D elastic stress analysis. Araldite epoxy resin [1], a sensitive, stable, machinable material, ideal for this purpose, had been available since the mid‐1950s. The scope of the moiré fringe approach was limited, largely as a result of the relatively coarse gratings then available. The X‐ray diffraction technique was available, in theory, but strain resolution was poor because of limitations in goniometer sensitivity. Lasers became available in the early 1960s and coherent optics techniques such as holographic interferometry and electronic speckle pattern interferometry (ESPI) became practicable [2, 3]. The field of fracture mechanics had barely opened up.…”

Section: Introductionmentioning

confidence: 99%

“…Lasers became available in the early 1960s and coherent optics techniques such as holographic interferometry and electronic speckle pattern interferometry (ESPI) became practicable [2, 3].…”

Section: Introductionmentioning

confidence: 99%