The interferometric-fringe pattern of glazy stress is shown acording to the matrix theory ofphotoelasticity.The interferometric-fringe gradtient method theory is set up todetermine theglazy stress.

• 从光弹性矩阵理论的角度解释坯釉的应力条纹图，建立测定坯釉应力的条纹梯度法理论。