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本文介绍用脆漆法、电测法对ＦＪ６６１长途客车骨架强度的测试结果．扼要地讨论客车骨的应力 概况和立柱的基本变形；新旧骨架的强度对比，蒙皮对骨架强度、刚度的影响；骨架材料在各种焊 按规范下的机械性能和分析骨架早期断裂的原因。
This article describes the use of brittle paint method, electrical test method of FJ661 long-distance bus skeleton strength test results. The stress profile of the bus and the basic deformation of the column are briefly discussed. The strength comparison of the old and new skeletons, the influence of the skin on the strength and rigidity of the skeleton, the mechanical properties of the skeleton materials under various welding specifications and the reasons for the early fracture of the skeleton are analyzed.