作　　者： ; ;

机构地区： 湖南大学机械与运载工程学院

出　　处： 《宇航材料工艺》 2005年第3期57-61,共5页

摘　　要： 基于某烧伤战机的实际检测需要,选用LC4CS及LY12CZ铝合金为试验材料进行烧伤模拟试验,对材料在不同温度下的力学性能与电导率的关系进行了分析。试验结果表明,热处理强化后的铝合金受热损伤之后,强度和电导率随温度不同都有突变现象,二者温度变化区间接近,且电导率的变化稍微超前,因此,用电导率检测法来界定烧伤范围和烧伤程度比硬度检测法更安全。应用结果表明,涡流电导率法可以准确、快速确定飞机结构热损伤的范围和程度,能够为烧伤战机的抢修提供可靠的理论依据,对构件不会造成任何破坏,成本低、效率高,这对于飞机修理厂修理热损伤构件有着广泛的应用前景。 In view of the practical test demand for some burned battle aircraft,simulated experiments aiming at two materials —LY12CZ and LC4CS are carried out.The relationship of mechanical performance and electric conductivity at different temperatures are studied.The experiment indicates that after aluminum alloy is heated,sudden changes of strength and electric conductivity will occur as temperature is changed,and moreover,the change interval of temperature is close and the change of electric conductivity occurs somewhat in advance,the electric conductivity tends to be safer than the current hardness testing method. The application result shows that the burned range and degree of the aircraft can be defined accurately with the electric conductivity,and this can provide a dependable theoretic basis for repairing the burned aircraft.The test method of electric conductivity enjoys a lot of advantages,for instance, without destructing components,with lower cost and higher efficiency,this method offers a broad prospect in applying,in testing burned components in aircraft service factories.

关 键 词： 战斗机 涡流检测 电导率 结构烧伤试验 铝合金材料

领　　域： [一般工业技术] [航空宇航科学与技术] [航空宇航科学技术] [航空宇航科学与技术]