Developments In Radial Metrology

Greguss, Pal; Gilbert, John A.; Matthys, Donald R.; Lehner, David L.

doi:10.1117/12.947614

Cited by 4 publications

(2 citation statements)

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“…Optical probe-based methods are invented as alternative solutions for measurements of hard-to-access areas due to its nature of direct measurement and nondestructiveness. [2][3][4][5][6][7][8] In 1987, Gilbert et al first invented a radial profilometer using a panoramic doughnut lens-based probe, which was able to perform wide-view measurement. 2,3 In 1998, Alayli et al proposed a fiber profilometer for high accuracy profiling.…”

Section: Introductionmentioning

confidence: 99%

“…[2][3][4][5][6][7][8] In 1987, Gilbert et al first invented a radial profilometer using a panoramic doughnut lens-based probe, which was able to perform wide-view measurement. 2,3 In 1998, Alayli et al proposed a fiber profilometer for high accuracy profiling. 4 This method makes use of a calibrated relationship between the amounts of reflected light and sample-probe distance to identify the surface displacement values.…”

Section: Introductionmentioning

confidence: 99%

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Fiber profilometer for measurement of hard-to-access areas

Liu

Wang

et al. 2013

SPIE Proceedings

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A fiber profilometer is developed to measure hard-to-access areas. This system utilizes low coherence light interferometry technique to detect profiles of internal surfaces of samples. A differentiation method is employed to enhance vertical resolutions of imaging results. An auto-focusing scheme is proposed to obtain an optimized lateral resolution. The performance of the profilometer system is demonstrated by experimental studies.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fiber profilometer for measurement of hard-to-access areas

Liu

Wang

et al. 2013

SPIE Proceedings

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Coordinates measurement with the usage of panoramic annular lens (PAL)

Solomatin¹

2022

PROCEEDINGS OF THE II INTERNATIONAL CONFERENCE ON ADVANCES IN MATERIALS, SYSTEMS AND TECHNOLOGIES: (CAMSTech-II 2021)

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Full-field optical metrology in polar and cylindrical coordinates

Albertazzi

Viotti

2021

J. Phys. Photonics

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There are a large number of engineering measurement demands that can be very well met with optical methods. Among them, there are some that deal with circular or cylindrical geometries, for which Cartesian coordinates are not the ideal. Measurements in cylindrical and polar coordinates are much more natural choices. This paper presents an overview of various principles and configurations to measure textures, wear, geometry and deformations of external and internal cylindrical parts, displacements, deformations, stresses and residual stresses in cylindrical or polar coordinates. Optical measurement techniques such as triangulation, photogrammetry, deflectometry, white light interferometry, speckle interferometry, shearography in cylindrical or polar coordinates, are addressed. Most of the configurations presented here involve internal or external conical mirrors. These special optical components have several very interesting properties capable of performing transformations between coordinate systems. Examples of real engineering demands are presented and briefly discussed. The results obtained met the demands for which they were developed. Our expectation is that the configurations presented here can serve as a reference for already established applications and as a source of inspiration for new demands and possibilities.

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Developments In Radial Metrology

Cited by 4 publications

References 2 publications

Fiber profilometer for measurement of hard-to-access areas

Fiber profilometer for measurement of hard-to-access areas

Coordinates measurement with the usage of panoramic annular lens (PAL)

Full-field optical metrology in polar and cylindrical coordinates

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