MTS Series 647 Hydraulic Wedge Grips User Manual
Page 81
Gripping Principles
Description
Item
Wedges for Round Specimens
1
Wedges for Flat Specimens
2
Determine Gripping Pressure - Axial for Round Specimens (and
Axial/Torsional for Flat Specimens)
The following procedure determines the minimum gripping pressure for axial testing of round specimens and
axial/torsional testing for flat specimens.
1. Determine the maximum axial load to be applied to the specimen for the test.
2. Calculate the minimum grip supply pressure according to the formula:
For monotonic testing:
For fatigue testing:
Series 647 Hydraulic Wedge Grips Reference Manual 81
Operation
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