| 摘要 |
PURPOSE: A method for determining tensile strength using continuous indentation test is provided to grasp mechanical characteristics of metal by applying indentation load to a spherical indenter and continuously measuring variation of indentation depth according to increase or decrease of indentation load. CONSTITUTION: The method for determining tensile strength using continuous indentation test comprises a strain hardening coefficient-stress coefficient determination step; and a tensile strength determination step, wherein the strain hardening coefficient-stress coefficient determination step further comprises a strain hardening coefficient setting step; a contact radius estimation step of estimating a contact radius of an indenter and a concerned specific metal; an indentation strain-stress estimation step; a strain hardening coefficient estimation step; a strain hardening coefficient judgement step; a repeating step of repeating the strain hardening coefficient setting step, the contact radius estimation step, the indentation strain-stress estimation step, the strain hardening coefficient estimation step, and the strain hardening coefficient judgement step; a strain hardening coefficient determination step; and a stress coefficient determination step.
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