Testing the mechanical tensile, compression and fatigue characteristics of metals at -196C (320F) requires full submersion into liquid nitrogen. TestResources has developed a system with a LN2 cryostat. The test machine in this application is special test machine that includes a LN2 cryostat. A large LN2 cryogenic dewar is located under the actuator. Prior to submersion, a test sample is gripped and a special low temperature extensometer mounted on the sample. The frame includes a sub frame located below the actuator so that the loads are reacted against inside the test environment. During setup, the crosshead is lowered, with actuator extended until the subframe is submerged in the media. The cryostat is modular and can be removed for easy ambient test applications.
Recommended Test Machine
>Load ratings from 100 kN to 5 MN (22,500 lbf to 1,125,000 lbf)
Servohydraulic
Can perform both static and dynamic tests
Recommended Testing Accessories
Load ratings from 50 kN to 300 kN (11,250 lbf to 67,500 lbf)
Hydraulic actuation
Designed to cycle dynamically through zero-load
Temperature ratings up to 1,000°C (1,800°F)
Measures displacement for axial tensile, compression, and cyclic testing
Gage lengths from 10 mm to 50 mm (0.5 in to 2.0 in)
Measuring ranges from 5% to 100% strain
Lightweight and self-supporting
Standard temperature range of -155°C to 620°C (-247°F to 1150°F)
Accompanied by a broad set of accessories that are capable of withstanding the heat or cold
PID controlled internal temperature
Mounts directly to the test frame