Adhesively bonded joints are being widely used in the fabrication process of aircraft and automobile structures. Surface roughness is an important parameter of product quality that strongly affects the performance of mechanical parts, as wel as production costs. This parameter highly influences the mechanical properties overall of such structures. The effects of UV radiation on the single lap joints manufactured with different types of surface preparation and temperature were examined before and after UV exposure. Sandblasting, sanding and chemical cleaning were used as surface preparation and two test temperatures were used for investigation, 25 and 115 °C. The results of those tests showed that surface preparation highly influences shear strength, but does not affect the stiffness of the tested joints. Temperature also influences the shear strength and stiffness. UV radiation contributes to increase shear strength and do not degrade the tested single lap joints.

中文翻译：

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粘合的单搭接接头中的紫外线暴露研究

胶接接头被广泛用于飞机和汽车结构的制造过程中。表面粗糙度是产品质量的重要参数，与生产成本一样，它会严重影响机械零件的性能。该参数极大地影响了此类结构的整体机械性能。在暴露于紫外线之前和之后，检查了紫外线辐射对采用不同类型的表面处理和温度制造的单搭接接头的影响。使用喷砂，打磨和化学清洁作为表面处理，并使用两个测试温度分别为25和115°C。这些测试的结果表明，表面处理会极大地影响剪切强度，但不会影响测试接头的刚度。温度还会影响剪切强度和刚度。紫外线辐射有助于增加剪切强度，并且不会降低测试的单搭接接头的性能。