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在役起重机金属结构的安全评估就是对起重机金属结构系统中存在的危险因素进行确认并进行定性或定量分析,进而给出系统状态危险的定性和定量结论,依次进行评价。而应力和应变的测试是评价设备状态的重要手段,通过测试零件、结构的受力和工作状态,确定应力、应变、位移、力、载荷乃至加速度等力学参数的变化,从而解决工程结构和机械强度、刚度等问题~([1、2]),可对起重设备、结构的状态、寿命、
The safety assessment of in-service crane’s metal structure is to confirm and qualitatively or quantitatively analyze the risk factors existing in the crane’s metal structure system, and then to give the qualitative and quantitative conclusions of the dangerous state of the system. The stress and strain testing is an important means to evaluate the state of the equipment. By testing the stress of the parts and structures and the working conditions, the changes of mechanical parameters such as stress, strain, displacement, force, load and even acceleration can be determined, so as to solve the problem of engineering structure and machinery Strength, stiffness and other issues ~ ([1,2]), lifting equipment, the status of the structure, life expectancy,