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Standard Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings
Name übersetzen
NORM herausgegeben am 1.11.2016
Bezeichnung normen: ASTM B697-88(2016)
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.11.2016
SKU: NS-668322
Zahl der Seiten: 8
Gewicht ca.: 24 g (0.05 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
ICS Number Code 25.220.40 (Metallic coatings)
1. Scope | ||||||||||
1.1 This guide gives guidance in the selection of sampling plans to be used in the inspection of electrodeposited and related coatings on products for the purpose of deciding whether submitted lots of coated products comply with the specifications applicable to the coatings. This supplements Test Method B602 by giving more information on sampling inspection and by providing additional sampling plans for the user who finds the limited choice of plans in Test Method B602 to be inadequate. 1.2 When using a sampling plan, a relatively small part of the articles in an inspection lot is selected and inspected. Based on the results, a decision is made that the inspection lot either does or does not satisfactorily conform to the specification. 1.3 This guide also contains several sampling plans. The plans are attribute plans, that is, in the application of the plans each inspected article is classified as either conforming or nonconforming to each of the coating requirements. The number of nonconforming articles is compared to a maximum allowable number. The plans are simple and relatively few. Additional plans and more complex plans that cover more situations are given in the Refs 1.4 Acceptance sampling plans are used: 1.4.1 When the cost of inspection is high and the consequences of accepting a nonconforming article are not serious. 1.4.2 When 100 % inspection is fatiguing and boring and, therefore, likely to result in errors. In these cases a sampling plan may provide greater protection than 100 % inspection. 1.4.3 When inspection requires a destructive test. Here, sampling inspection must be used. 1.5 Another general type of acceptance
sampling plan that is not covered in these guidelines is the
variables plan in which measured values of characteristics are
analyzed by statistical procedures. Such plans, when applicable,
can reduce inspection cost and increase quality protection.
Information on variables plans is given in Test Method B762, MIL-STD-414, ANSI/ASQC Z1.9-1979,
and Refs
Sampling Procedures and Tables for
Inspection by Variables for Percent Nonconformance MIL-STD-105 Standard Guide of Variables Sampling of
Metallic and Inorganic Coatings Standard Guide for Attribute Sampling of
Metallic and Inorganic Coatings MIL-STD-414 Sampling Procedures and Tables for
Inspection by Variables for Percent Defective |
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