Taking three-D exciting endurance test of vertical damper as example,the thought and method for organizing SIM endurance test by simulating damper s working state and environment is proposed.

Through performance test, magnetism torque test and endurance test, showed that all requirement of performance is attained.

It is one of the important performance indexes of power-operated tools,we analyze the factors that influence the process of power-operated tool durability test,conclude the reasons for disqualification of power-operated tools in durability test,and propose attentions on the produce and test process o.

A durability test is made for 340h under simulated aeroengine operating conditions.

In this paper,beginning from the aspect of energy,the requirements on the durability test for draft gears by railway industrial standards in our country,AAR standard,UIC code and Russian standard are compared.

Pressure Test of Pressure Vessel in Refrigeration Equipment;

Discussion on pressure test methods for vertical vessels;

Pressure test in periodical examination of pressure vessel;