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用高温应变计和热偶计等诊断技术，研究连续波氧碘化学激光（ＣＷ／ＣＯＩＬ）与铝合金板作用产生的激光热应力。当照射靶面激光强度约１０００Ｗ／ｃｍ２时，激光热应力随靶厚的增加而快速减小。当激光辐照靶材厚度ｈ＝１．００ｍｍ、激光强度Ｉ＝６４０～９８０Ｗ／ｃｍ２时，激光热应力随辐照靶面激光强度的增加而增大。两者的激光热应力－时间曲线随靶厚的减薄或随辐照靶面激光强度的增加而变得越来越复杂。当靶厚ｈ≤２．５０ｍｍ，辐照靶面激光强度Ｉ≥８００Ｗ／ｃｍ２时，激光热应力强度超过激光辐照区材料断裂强度，萌生许多孔洞裂纹，引起材料断裂破坏。
Using the high temperature strain gauge and thermocouple meter and other diagnostic techniques, the laser thermal stress produced by continuous wave oxygen-iodine chemical laser (CW / COIL) and aluminum alloy plate was studied. When the target laser intensity is about 1000W / cm2, the laser thermal stress decreases rapidly with the target thickness increasing. When the laser irradiation target thickness h = 1.00mm, laser intensity I = 640 ~ 980W / cm2, the laser thermal stress increases with the increase of the laser intensity of the irradiation target surface. The laser thermal stress-time curves of the two have become more and more complicated with the decrease of the target thickness or with the increase of the laser intensity of the irradiated target surface. When the target thickness is less than or equal to 2.50mm and the laser intensity of irradiated target surface is more than or equal to 800W / cm2, the thermal stress intensity of the laser exceeds the breaking strength of the material in the laser irradiation region, many hole cracks are initiated, causing the fracture of the material.