Results 51 to 60 of about 2,640 (165)
Improvement of Laser Trapping Based Microprobe in Laser Shaded Condition
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2012 A micro-probe based on laser trapping has been proposed for the probe system of a nano-coordinate measuring machine. This study focused on the “shadow effect,” which is the case wherein a partial beam for laser trapping is shaded by the ...
Masaki MICHIHATA +2 more
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Reliability of Parameters for Associated Features in Coordinate Metrology.
Journal of the Japan Society for Precision Engineering, 1997 In coordinate metrology, an associated feature (Gaussian associated feature) is normally calculated from a measured data set of CMM (Coordinate Measuring Machine) on a real feature using least squares method. Then, the associated feature is expressed without the geometrical deviation and the measuring uncertainty. However, the geometrical deviation and
TAKAMASU, Kiyoshi +2 more
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MetrologyMedical laboratories are perhaps the largest measurement industry in the world. The metrology terminology is relevant for effective and efficient communication, particularly where metrology activities are carried out by operators with different metrology
Marco Pradella
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Role of Median Curves and Surfaces and Their Computations in Coordinate Metrology
Volume 2: Advanced ManufacturingAbstract This paper explores a novel role for median curves and surfaces in coordinate metrology, and the techniques to compute these curves and surfaces. The role includes the important problem of identifying potential outliers in two- and three-dimensional geometrical measurements and grouping the measured data into zones of ...
Craig Shakarji +4 more
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e-Journal of Nondestructive TestingMetrology of internal structures is required for additive manufacturing (AM) series production parts in industry. Coordinate Measuring Machine (CMM) can no longer be used for such complex geometries.
Anne-Françoise Obaton +4 more
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Uncertainty Calculation of Roundness Assessment by Automatic Differentiation in Coordinate Metrology
Journal of Measurement Science and Instrumentation, 2010 Recently,Coordinate Measuring Machines（CMMs）are widely used to measure roundness errors.Roundness is calculated from a large number of points collected from the profiles of the parts.According to the Guide to the Expression of Uncertainty in Measurement ...
Jia-chun LIN1 +2 more
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Coordinate unification method of high-precision composite measurement in two dimensions
Journal of Measurement Science and Instrumentation, 2016 Multi-sensor coordinate unification in dimensional metrology is used in order to get holistic,more accurate and reliable information about a workpiece based on several or multiple measurement values from one or more sensors.Because of the problem that ...
WEN Xin +4 more
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Applied SciencesThe production and assembly of large engineering structures, many requiring tight tolerances, demand accurate long-distance measurements. This poses a major challenge for metrologists across industries such as energy, aviation, automotive, and machinery.
Adam Gąska +8 more
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EUCoM: Evaluating the Uncertainty in Coordinate Metrology
, 2019 Coordinate metrology is a fascinating discipline that bridges a very wide gap between sophisticated mathematics and practical application in industry, and particularly does the evaluation of the uncertainty. On one side, the evaluation is very complex and requires dedicated mathematical and software tools; on the other side, the impact is tremendous in
Alessandro Balsamo, Aline Piccato
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Framework for X-ray mirror surface shape fitting. [PDF]
J Synchrotron RadiatHuang L +9 more
europepmc +1 more source