公开(公告)号：US4192610A

公开(公告)日：1980-03-11

申请号：US787280

申请日：1977-04-13

Applicant: Dimitri Paraskevas

Inventor： Dimitri Paraskevas

IPC: G01L1/24 ,  G01B11/18 ,  G01J4/00

CPC classification number: G01L1/241

Abstract: At least four beams of linearly polarized light are produced separately at one and the same point of measurement in a single direction of observation at right angles to a unitary sheet of a specimen of photoelastic material in order to determine the state of mechanical stress in the plane of the sheet.

Abstract translation: 在与光弹性材料试样的整体片材成直角的单个观察方向上的同一测量点处分别产生至少四束直线偏振光，以确定平面中机械应力的状态 的表格。