工业轮胎激光全息探伤中需要一种干涉仪,能一次拍完一条轮胎而无检测盲区。西德RHI公司曾设计出一种全息干涉仪,在真空条件下,用三幅全息图检查一条轮胎。下面我们提出一种新的干涉仪,只用一幅全息图,即能检查完一条轮胎。轮胎不用扩口,也无检测盲区。 一、干涉仪 我们设计出如图1的轮胎激光全息干涉仪。其中L为激光束,T是被检查的轮胎。T_1、T_2、T_3、T_4、T_5分别是轮胎的下胎侧、下胎圈、胎冠和胎肩、上胎圈、上胎侧。M_1、M_2、M_3是反射镜。SS是一个大球面(球缺)反射镜,它把经S扩束后的激光束的一部 Industrial Tire Laser Holographic Flaw Detection requires an interferometer that can finish a tire without blind spot detection. West Germany RHI company has designed a holographic interferometer, under vacuum, with a three hologram inspection of a tire. Below we propose a new interferometer, using only a hologram, which can check a tire. Tires without flaring, no blind spot detection. First, the interferometer We designed the tire laser holographic interferometer shown in Figure 1. Where L is the laser beam and T is the tire under test. T_1, T_2, T_3, T_4, T_5 are respectively the lower sidewall, the lower bead, the crown and the shoulder of the tire, the upper bead and the upper sidewall. M_1, M_2, M_3 are mirrors. SS is a large spherical (ball-short) reflector, which expands the beam after S beam part