| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a three-dimensional plastic deformation analyzing method including a three-dimensional plastic strain analyzing method for evaluating highly precisely a plastic deformation of a crystal grain. <P>SOLUTION: This three-dimensional plastic deformation analyzing method is effective for evaluating the deformation of a micro material having the reduced number of crystal grains, and effective for evaluating strength of an electronic device and a micro machine, since the plastic deformation is accurately evaluated based on both "a plastic strain" and "plastic rotation" by acquiring images before and after the deformation on a sample surface of the measured crystal grain, by finding a sliding line angle and a crystal direction on the surface of the measured crystal grain, by calculating six components of three three-dimensional vertical strain componentsε<SB>x</SB>,ε<SB>y</SB>,ε<SB>z</SB>and three shearing strain componentsγ<SB>xy</SB>,γ<SB>yz</SB>,γ<SB>zx</SB>, by a prescribed calculation expression, based on longitudinal and lateral dimensions and an area of a grain boundary, the sliding line angle and the crystal direction, by finding a rotational amount (angle change) of a crystal based on a difference between the crystal directions before and after the deformation, and by calculating three plastic rotation componentsω<SB>x</SB>,ω<SB>y</SB>,ω<SB>z</SB>by a prescribed calculation expression. The plastic deformation strain is integrally evaluated three-dimensionally even in the micro material having the reduced number of crystal grains to analyze accurately the plastic deformation as the material. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
