Results 21 to 30 of about 2,883 (164)
Analytic descriptions of parabolic X-ray mirrors
Journal of Synchrotron Radiation, 2022 On X-ray beamlines and telescopes, glancing-incidence mirrors with parabolic profiles are used to collimate, focus, and collect light. Here, analytic descriptions for paraboloidal, plane-parabolic, and parabolic cylindrical mirrors in several congruent ...
Kenneth A. Goldberg
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Metrology, 2022 Data-driven manufacturing in Industry 4.0 demands digital metrology not only to drive the in-process quality assurance of manufactured products but also to supply reliable data to constantly adjust the manufacturing process parameters for zero-defect ...
Gorka Kortaberria +3 more
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Evaluation of metrology technologies for free form surfaces [PDF]
International Journal of Metrology and Quality Engineering, 2012 This research work describes a novel approach for comparing different technologies for free form surface metrology: computerized tomography (CT), photogrammetry and coordinate measuring machines (CMM).
Arámbula K. +4 more
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Measurement Science Review, 2014 Nowadays, simulators facilitate tasks performed daily by the engineers of different branches, including coordinate metrologists. Sometimes it is difficult or almost impossible to program a Coordinate Measuring Machine (CMM) using standard methods.
Gąska A. +4 more
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Approximate models of CMM behaviour and point cloud uncertainties
Measurement: Sensors, 2021 Coordinate metrology can be thought of as a two-stage process, the first stage using a coordinate measuring system to gather coordinate data – point clouds – related to a workpiece surface, the second extracting a set of parameters or characteristics ...
Alistair Forbes
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Sensitivity Analysis for Gaussian-Associated Features
Applied Sciences, 2022 This paper is concerned with the evaluation of the uncertainties associated with Gaussian-associated features following the GUM methodology. We show how sensitivity matrices necessary for a GUM uncertainty evaluation can be calculated and how the ...
Alistair Forbes
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Sensors, 2021 Fringe projection profilometry in combination with other optical measuring technologies has established itself over the last decades as an essential complement to conventional, tactile measuring devices.
Lennart Hinz +15 more
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Single Point Articulation Metrology Test for a Portable Coordinate Measuring Machine [PDF]
EPJ Web of ConferencesA Portable Coordinate Measuring Machine used in precision measurement has complex physical structure built than conventional coordinate measuring machine.
Dabhole Santosh, Kulkarni Vinay
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Generation of numerical artefacts for geometric form and tolerance assessment [PDF]
International Journal of Metrology and Quality Engineering, 2012 This paper describes an approach to generating reference data sets to evaluate the performance of algorithms used in coordinate metrology for form and geometric tolerance assessment.
Forbes A. B., Minh H. D.
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A Unified Theory for 3D Gear and Thread Metrology
Applied Sciences, 2021 We propose a unified theory for the metrological treatment of helical machine elements such as cylindrical and conical gears, worms, and screw threads. The main idea is to introduce a universal 3D geometry model for threaded components that provides for ...
Martin Stein +2 more
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