Research on relationship between mold surface failure and life

Through troubleshooting of an example, it is proved that profile relief can reduce the temperature on the contact point remarkably and therefore is a very effective measure to resolve the surface failure of gear tooth.

Analysis of veneering failure for low-speed heavy-duty gear;

The failure models of irreparable system under the conditions of the human errors are established according to the reliability theory.

Then the recently state and some primary methods about researches of thermal failure models are also introduced.

A wear failure model of solid-lubricated ball bearings is established based on such analysis which concludes that the wear of solid lubrication film is the main cause of failure for solid-lubricated ball bearings of spacecraft mechanisms.

In this pa-per,the reliability testing require for MEMS and reliability testing system ShiMMeR were analyzed,reliability experiments and failure modes of MEMS were summarized,and reliability design for MEMS was discussed.