Accession Number : AD0738942

Title :   A Dynamic Programming Solution of Optimal Tolerancing for Correlated Dimensions on a Single Part,

Corporate Author : ARMY MATERIEL COMMAND TEXARKANA TEX INTERN TRAINING CENTER

Personal Author(s) : Reed,Robert W.

Report Date : MAY 1968

Pagination or Media Count : 54

Abstract : The paper presents a method of optimally allocating tolerances to the dimensions on a piecepart, considering correlation and a hierarchy of importance among the dimensions. Present methods used by the designer for specifiying tolerances do not consider the degree of correlation among dimensions common to a piecepart. This correlation is based on the fact that the dimensions on a piecepart may be manufactured by the same piece of machinery, by the same machinest, or by the same process. Neglecting correlation is equivalent to throwing away valuable information that otherwise could be used for allocating tolerances in a more optimal manner. The method of solution presented here is based on a numerical integration technique, in conjunction with a dynamic programming algoithm. The solution of the problem by hand, for three or more dimensions, is unwieldy but can readily be adopted to a computer. (Author)

Descriptors :   (*QUALITY CONTROL, *TOLERANCES(MECHANICS)), (*DYNAMIC PROGRAMMING, OPTIMIZATION), CORRELATION TECHNIQUES, PROBABILITY, INTEGRALS, MULTIVARIATE ANALYSIS, MATHEMATICAL MODELS, NUMERICAL ANALYSIS, NUMERICAL INTEGRATION, THESES

Subject Categories : Operations Research
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE