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从测试EQ1170KA城市客车底盘焊接结构的断裂韧性,得到了不同焊接方法焊接接头的J积分特征值,同时研究了焊接接头不同部位的断裂韧性分布特征,为EQ1170KA城市客车底盘焊接结构的缺陷容限及安全评定提供了基本数据。
From the test of the fracture toughness of EQ1170KA urban bus chassis welding structure, the J-integral characteristic values of welded joints of different welding methods were obtained. Meanwhile, the fracture toughness distribution characteristics of different sections of welded joints were studied. The defect tolerance of EQ1170KA urban bus chassis welding structure and Security assessment provides the basic data.