布喇格中心波长的偏移与轴向应力、径向应力和温度等变化量均呈极好的线性比例关系，且在较大的测量范围内一直保持线性关系。
The relative shift of Bragg center wavelength increased linearly with the change of axial stress, radial stress or temperature, and it kept the linear relationship in a large range.
本文利用轮胎受荷前后表面反射光波的干涉原理，从布喇格方程出发，导出了干涉条纹间距与变形量的关系式，分析了内部缺陷与条纹畸变的关系。
The formulas for strain quantity and fringe spacing on the basis of Bragg equation are derived. The relationship between fringe deformation and internal flaws is analysed.
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