NF ISO 22514-7
Statistical methods in process management - Capability and performance - Part 7 : capability of measurement processes
ISO 22514-7:2012 defines a procedure to validate measuring systems and a measurement process in order to state whether a given measurement process can satisfy the requirements for a specific measurement task with a recommendation of acceptance criteria. The acceptance criteria are defined as a capability figure or a capability ratio.
ISO 22514-7:2012 defines a procedure to validate measuring systems and a measurement process in order to state whether a given measurement process can satisfy the requirements for a specific measurement task with a recommendation of acceptance criteria. The acceptance criteria are defined as a capability figure or a capability ratio.
<p>This document defines a procedure to validate measuring systems and a measurement process in order to state whether a given measurement process can satisfy the requirements for a specific measurement task with a recommendation of acceptance criteria. The acceptance criteria are defined as a capability figure (<em>C</em><sub>MS</sub>, <em>C</em><sub>MP</sub>) or a capability ratio (<em>Q</em><sub>MS</sub>, <em>Q</em><sub>MP</sub>).</p> <p>NOTE This document follows the approach taken in ISO/IEC Guide 98-3<em> </em>(GUM), and establishes a basic, simplified procedure for stating and combining uncertainty components used to estimate a capability index for an actual measurement process.</p> <p>This document is primarily developed to be used for simple one-dimensional measurement processes, where it is known that the method uncertainty and the specification uncertainty are small compared to the implementation uncertainty. It can also be used in similar cases, where measurements are used to estimate process capability or process performance. It is not suitable for complex geometrical measurement processes, such as surface texture and position measurements that rely on several measurement points or simultaneous measurements in several directions.</p>
- Avant-proposiv
- Introductionv
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1 Domaine d'application1
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2 Références normatives1
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3 Termes et définitions2
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4 Symboles et termes abrégés6
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4.1 Symboles6
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4.2 Termes abrégés8
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5 Principes de base8
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5.1 Généralités8
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5.2 Résolution11
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5.3 Erreur maximale tolérée (MPE) connue et utilisée11
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5.4 Limites d'aptitude et de performance pour un système de mesure et un processus de mesure.11
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6 Mise en oeuvre11
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6.1 Généralités11
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6.2 Facteurs qui influencent le processus de mesure12
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7 Études pour le calcul des composantes d'incertitude17
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7.1 Système de mesure17
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7.2 Composantes d'incertitude du processus de mesure22
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8 Calcul de l'incertitude composée22
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8.1 Généralités22
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8.2 Calcul de l'incertitude élargie23
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9 Aptitude24
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9.1 Ratios de performance24
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9.2 Indicateurs d'aptitude24
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10 Aptitude du processus de mesure par rapport à l'aptitude du processus de production25
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10.1 Relation entre l'aptitude du processus observée et le ratio d'aptitude de mesure25
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10.2 Relation entre aptitude de processus observée et aptitude de mesure26
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11 Revue continue de la stabilité du processus de mesure27
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11.1 Revue continue de la stabilité27
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11.2 Surveillance de la linéarité27
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12 Aptitude des processus de mesure d'attributs28
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12.1 Introduction28
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12.2 Calculs d'aptitude n'utilisant pas de valeurs de référence29
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12.3 Calculs d'aptitude utilisant des valeurs de référence30
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12.4 Suivi en continu33
- Annexe A (informative) Exemples35
- Annexe B (informative) Méthodes statistiques utilisées41
- Bibliographie46
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