QUALITY CONTROL. 1-SAMPLING, CONTROL BY ATTRIBUTES

CONTROL DE CALIDAD. 1. PLANES DE MUESTREO. CONTROL POR ATRIBUTOS

THE IMPORTANCE OF A SATISFACTORY QUALITY CONTROL WHICH GUARANTEES THE QUALITY OF THE FINISHED PRODUCT, IS DISCUSSED IN THIS ARTICLE. THIS IS DUE PRINCIPALLY TO THE CONSTANT ENLARGEMENT OF CONTRACTS, THE DIVERSIFICATION OF PRODUCTS, THE APPEARANCE OF NEW MATERIALS ETC, WHICH REQUIRE A RENEWAL OF PRODUCTION PROCESSES AND CONSEQUENTLY METHODS AND STANDARDS FOR CONTROL. A SAMPLING PROCEDURE MUST BE ESTABLISHED WHICH PROVIDES DATA ON THE REGULARITY OF PRODUCTION PROCESSES, WHICH ALLOWS A CLASSIFICATION OF CHARACTERISTICS OF EACH BATCH FABRICATED AND WHICH INDICATES QUALITY. THE SAMPLING PROCEDURE MUST BE WELL DESIGNED AND THE TESTS MUST DETECT ANY FAULT IN THE PRODUCTS. MILITARY STANDARD MIL-STD-105D IS MENTIONED WHICH IS APPLIED IN THE INDUSTRIAL FIELD. CONTROL SYSTEMS FOR DETERMINING FAULTS IN MANUFACTURED ARTICLES ARE OF TWO TYPES: CONTROL BY ATTRIBUTES AND CONTROL BY VARIABLES. IN THE FORMER THE ARTICLE IS CLASSIFIED AS "ACCEPTABLE" OR "UNACCEPTABLE" AS A FUNCTION OF A QUANTITATIVE MEASUREMENT OR A QUALITATIVE ESTIMATION. IN THE LATTER THE ARTICLES ARE CLASSIFIED ACCORDING TO CERTAIN CHARACTERISTICS AND A COMPARATIVE EVALUATION IS ESTABLISHED.

Language

  • Spanish

Media Info

  • Pagination: 7-12
  • Serial:
    • Cimbra
    • Issue Number: 129
    • ISSN: 0210-0479

Subject/Index Terms

Filing Info

  • Accession Number: 01298600
  • Record Type: Publication
  • Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)
  • Files: ITRD
  • Created Date: Nov 21 2010 6:48AM