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ISO 22514-8:2014

Current
Current

The latest, up-to-date edition.

Statistical methods in process management Capability and performance Part 8: Machine performance of a multi-state production process
Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

06-02-2014

ISO 22514-8:2014 aims to define the evaluation method to quantify the short-term capability of a production process (capacity of the production tool, widely termed capability), i.e. the machine performance index, to ensure compliance to a toleranced measurable product characteristic, when said process does not feature any kind of sorting system.

If the production process integrates a sorting system, then this one (clearing away nonconforming parts) should be analysed independently.

ISO 22514-8:2014 does not aim to define evaluation methods of the capability of a production process that is gauged through long-term observation (capability process or performance process indices).

ISO 22514-8:2014 defines the principles guiding the development of indicators for quantifying capability, and the statistical methods to be employed.

The characteristics used to evaluate production process capability have statistical distributions, and it is presumed, a priori, that at least one of these distributions is multi-modal. A distribution is presumed to be multimodal if it results from the marked effect of at least one cause inducing a significant difference between the produced items.

ISO 22514-8:2014 applies, for example, to characteristics generated by processes such as the following: multi-cavity casting, multi-fixture machining, batch load treatments.

Each cavity, fixture, or position in the batch load corresponds to a different state. The multi-state process can be understood as the result of the combination of different states within the same process (e.g. cavity, fixture, position in the batch load).

DevelopmentNote
Supersedes ISO/DIS 22514-8. (06/2014)
DocumentType
Standard
Pages
37
PublisherName
International Organization for Standardization
Status
Current

BS ISO 22514-1:2014 Statistical methods in process management. Capability and performance General principles and concepts
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UNI ISO 22514-1 : 2014 STATISTICAL METHODS IN PROCESS MANAGEMENT - CAPABILITY AND PERFORMANCE - PART 1: GENERAL PRINCIPLES AND CONCEPTS
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ISO 16269-4:2010 Statistical interpretation of data Part 4: Detection and treatment of outliers
ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
ISO 22514-3:2008 Statistical methods in process management Capability and performance Part 3: Machine performance studies for measured data on discrete parts
ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)

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