MTS Series 609 Alignment Fixture - Manual (Page 18)

Series 609 Alignment Fixture Product Information 18
Adjust Angular Alignment
Introduction
Angular Misalignment Produces a “C” Bend
Adjust Angular Alignment
Turning the four upper adjustment screws against the angularity collar moves the
housing. The mating surfaces of the angularity collar and housing are spherical.
This tilts the housing as it moves. This tilt gets the grips’ faces parallel,
improving their angular alignment.
Improved angularity reduces the specimen’s “C” bend and the strains that go with
this bend.
Removing the “C” bend can create another “S” bend which may need to be
reduced.
You may have to go back and forth between reducing the “S” bend and reducing
the “C” bend to get the bending strain within specifications.
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