MTS Series 609 Alignment Fixture - Manual (Page 50)

Series 609 Alignment Fixture Product Information 50
Calculating Bending Strain—Notched Flat Thick
Specimen Preparation
Where:
Bu is the bending strain of the upper gages
Bl is the bending strain of the lower gages
Au is the average strain of the upper gages
Al is the average strain of the lower gages
4. Determine which axis is bending.
• Bending strain along one axis (usually the y axis) can be corrected by
clamping and unclamping the specimen.
• Bending strain along the other axis (usually the x axis) can be corrected
by using the alignment fixture.
PBS
Bu
Au
------- 100 × = PBS
Bl
Al
----- 100 × =
Upper Gages Lower Gages