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Low Strain Rate Tests

The Dynamic Mechanics of Materials Laboratory uses an Instron 1321 axial-torsional load frame, see Figure 1, to conduct experiments at strain rates less than 2.0 s-1.  The axial and torsional degrees of freedom allow the user to conduct tension, compression, shear (torsion) as well as combined tension-shear and compression-shear experiments.  The load frame is controlled with an MTS FlexTest SE controller and is equipped with the Multi-Purpose Testware software package.  The machine has MTS 647.02 axial-torsional hydraulic wedge grips for specimen attachment.  Two load cells can be used with this machine. For experiments requiring large loads and torques, a Lebow 193 axial torsional Load cell is available.  This cell has an axial load capacity of +/- 20,000 lbf and a torque capacity of +/-10,000 in-lbf.  For experiments requiring lesser loads, an Interface 1216CEW-2K load cell is available.  This cell has an axial load capacity of +/- 2,000 lbf and a torque capacity of +/-1,000 in-lbf.

Figure 1. Instron 1321 bi-axial servohydraulic load frame.