Role of the Measurement Uncertainty in Cone Penetration Test Results of Lubricating Grease

Purata-Sifuentes, Omar-Jair; Hernández-Balandrán, Luis-Eduardo; Tornero-Navarro, Mirna-Guadalupe

doi:10.21014/tc11-2022.16

Cited by 1 publication

(1 citation statement)

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“…A more complicated formula in which the length of the guard band is expressed through an exponential function is detailed in [43]. The length of the guard band can also be calculated using the test of uncertain ratio (TUR) [44,45]. In addition, methods were developed where the acceptance interval was set by means of maximization of the revenue from processes without the systematic effect of measurement uncertainty [46] or with unknown systematic effect, [47].…”

Section: Guard Banding By Confusion Matrixmentioning

confidence: 99%

Metrics Related to Confusion Matrix as Tools for Conformity Assessment Decisions

et al. 2023

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Conformity assessment refers to activities undertaken to check whether some product, service or process meets certain criteria and specifications given by internationally accepted standards. The decision on whether a property of interest is aligned with the set standards is made based on measurement. However, uncertainty associated with the measurement results may lead to incorrect decisions. Measurement results may be falsely rejected as non-conforming, although they meet specifications. This is referred to as the producer’s risk. If the measurement result that does not meet the required specifications is accepted as conforming, this is referred to as the consumer’s risk. This paper covers calculations of global consumer's and producer's risk using the Bayesian approach and deals with the application of metrics related to confusion matrices in conformity assessment. These techniques have been used to assess the conformity of the bearing ring diameter with the given specifications. Based on the behavior of these metrics, the optimal length of the guard band was determined with the aim of minimizing the global consumer’s and producer’s risk.

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