For actual proof testing of prototypes and new products, expansion joints are displaced in the axial direction and the axle-perpendicular direction using a fatigue-testing device, measuring the high-cycle and low-cycle fatigue life. Also, in addition to testing objectives for new products, fatigue testing (destructive testing) is performed on expansion joints removed for a plant’s periodic inspections, and changeover timing is suggested by checking residual life.

Air-Pressure Testing		Fluid-Pressure Testing

The Helium Leak Detector is a fully-automatic portable model which delivers high sensitivity/low background, and which comes equipped with a molecular drag pump with a high compression ratio, and a high-performance analysis tube. In leak testing, this method is able to detect the finest leaks. Model MSE-2000 Test Port Max. Pressure 2000Pa (1000Pa during rough switchover) Detection Sensitivity 1 X 10-12~1 X 100 Pa m3/s [He] Exhaust-related Molecular drag pump, specialized-oil rotary vacuum pump Analysis Tube Thoria-coated iridium filament (two equipped) Usage temperature range -7℃ to 50℃ Dimensions/Mass W280 X H630 X D530mm approx. 45kg (main body) In helium leak testing, it is able to detect even extremely fine leaks of (5 X 10 – 13Pa/m3/s), so small that at a rate of 1Pb, 1cm3 of air would take approximately 6,000 years to fully leak. In leak testing, this method is able to detect the finest leaks.

Laser Tracker		Features/Specifications