4.6 Article

Measurement uncertainty assessment of articulated arm coordinate measuring machine for length measurement errors using Monte Carlo simulation

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SPRINGER LONDON LTD
DOI: 10.1007/s00170-021-08416-1

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Dimensional measurements; Coordinate metrology; Portable CMM; Verification; Measurement uncertainty; Monte Carlo simulation

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Precise dimensional measurements in manufacturing industries are largely influenced by coordinate metrology. An experimental investigation was conducted to verify an articulated arm coordinate measuring machine using a one-dimensional standard artefact. Monte Carlo Simulation method was used for uncertainty estimation and compared with ISO GUM outcomes, showing reasonable concordance.
Precise dimensional measurements, predominantly through coordinate metrology, largely influence the quality control in manufacturing industries. Other than the standard coordinate measuring machines (CMMs), coordinate metrology also functions in conjunction with measurement systems utilizing structured light, imaging, laser triangulation, photogrammetry and computer tomography. An articulated arm coordinate measuring machine (AACMM) or portable CMM provides enhanced flexibility and diminished weight as compared to the conventional CMM. Periodic reverification of articulated arm CMM is essential to ascertain accurate and precise dimensional measurements. In the present experimental investigation, an articulated arm coordinate measuring machine has been verified as per ISO 10360-12:2016 using one-dimensional standard artefact (KOBA Step Gauge, 1220 mm). The measurement uncertainty estimation has been carried out using Monte Carlo Simulation (MCS) and compared with ISO GUM (law of propagation of uncertainties: LPU) outcomes. Established expanded uncertainties and measured mean values acquired from the two approaches were observed to be in reasonable concordance.

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