Patent ID: 6311135
Filing Date: 2001-10-30
Classification: G01N

Abstract:
A data processor program product for determining the preexisting stress in a stressed section of material, comprising:a medium readable by a data processor; anddata processor program logic recorded in the data processor readable medium and executable by a data processor to definemeans for determining the stress in a stressed section of material from first data and from second data, said first data obtained from an indentation test on the stressed section with a sharp indenter and including at least two of a load on the indenter Ps, an area of indentation As, and a depth of penetration hs, and the second data including at least one of 1) data obtained from an indentation of a second section having a known stress of one of the material and a second material substantially similar to the material and 2) additional data that can allow determination of the Young's modulus of the material.