The failure analysis
Mechanical products in using process often have the failure phonomenon of fracture, deformation, wear and corrosion .In order to prevent or postpone the failure phenomenon,find the failure reason , put forward improvement measures, we must carry out failure analysis.At present, with the rapid development of modern science and technology, the failure analysis has become a comprehensive discipline.It not only associated with natural science such as physics and materials science, fracture mechanics and fracture , but also refer to the quality of the products comprehensive management and the other realm of social science.
Most of the mechanical components are failed in the process of fracture , when a part is damaged and fracture, it have very close connection with other parts ,the environment and other operations .after the Metal laboratory received the failure parts,we will find out the main reason of damage from the design level, material quality, processing status, maintenance, assembly precision, work environment, service condition , operation method and other factors. And we will have a analysis judgment and make improved measures according to the cause of the damage,, mechanism, types and phases.
Fracture process is a dynamic process, the cleft is the static reflection of fracture,we can find out the cause and mechanism of fracture by observing and analyzing the cleft .The cleft truthfully reflects the whole process of fracture of mechanical components, namely the process of crack initiation and the process of expanding in mechanical components, thus cleft analysis is an important means of failure analysis. in order to achieve better analytical effect, we must supplement with nondestructive testing, mechanical properties test, metallographic examination, chemical analysis, X-ray analysis, fracture toughness testing , simulation testing and other testing method, Finally combining the analysis with the testing result , we will have a comprehensive analysis.and the improved measures will be proposed.and then we will write the report of failure analysis.
The main Analysis project
Evaluation of welding