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Wire bond reliability testing typically consists of aging bonds in a high temperature environment for long time periods, removing samples at intervals to assess bond shear strength and characterize the bond cross sections. In this way, the degradation of the bond can be monitored at discrete time intervals, and it is determined whether the bond will be reliable under long term operation at lower temperatures...
Four flexible support units are used for each first wall module bracing to the vacuum vessel of ITER. The support unit consists of fastening bolt, flexible cartridge and collar for compensation of thermal expansion. The collar made of copper alloy operates under considerable compression load. The performed structural analysis shows that stresses in the collar exceed the design allowable value specified...
Porcelain suspension insulators aged for 1, 5 and 10 years on Korean transmission lines and new insulators are tested for autoclave expansion. The compressive strength of the insulators aged in an autoclave with conditions of 250degC and at 20 atm for 30 minutes, was about 7.6 kgf/mm2, which is close to that measured on insulators aged for 10 years in the field. From simulation results, the cement...
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