HEAT ENERGY DISSIPATION IN FATIGUE DAMAGE PROCESS

摘要

Using the dissipated energy as an essential parameter,the energy dissipative structure in pro-cess of fatigue damage of materials has been established.Through thermodynamic analysis forirreversible energy dissipation in fatigue damage process,the heat dissipative variations incyclic loading process as well as in a cycle have been systematically studied on the basis of lowcycle fatigue tests and infrared measurement of self-heating thermography.Meanwhile,thecyclic hysteresis energy and efficient energy dissipation (stored energy) have been proposedduring fatigue damage process.