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9mX9m Angled-style Expansion Joints

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—Services—


Fatigue Test [Deflection/Vibration]

Able to calculate fatigue life via value simulation
using the finite element method, even for bellows with never-before-seen complex shapes.

Lifespan measurements are carried out on trial-manufactured bellows by repeatedly extending and retracting them with a fatigue-testing device until cracks appear. Also, a lifespan prediction formula is established for new-shaped bellows through comparison of value analysis results with actual measurements.

Actual Proof Test

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.

 
     

Displacement Test

   
         

Pressure Test [Pressurization] (by Water and/or Air)

 
Air-Pressure Testing   Fluid-Pressure Testing

LAir-tightness Test [Vacuum] (Helium Leak Detector)

  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.

Three-dimensional Measurement
[3D Measuring system] (LASER Tracker)

 
Laser Tracker   Features/Specifications

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