Extensometer data vs. tensile strain
Extensometer data vs. tensile strain
(OP)
I have been trying to use an axial extensometer on instron 5560. The data that I get from using the extensometer shows as "strain 1%" is 20 times more than the actual data that I expect ( the data from crossheads moving which is "tensile strain").
How can I change that?
The gauge length of extensometer is 1 inch. The gauge length of the crossheads is about 1.5-2 inches.
How can I change that?
The gauge length of extensometer is 1 inch. The gauge length of the crossheads is about 1.5-2 inches.





RE: Extensometer data vs. tensile strain
RE: Extensometer data vs. tensile strain
Is it really meant for these long extensions?
2" is a very short distance between the grips. In elastomers there is very non-uniform deformation near the grips.
Are these straight uniform cross section samples?
Try a longer sample, say 8" between grips to start and see if the two values agree closer.
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Plymouth Tube
RE: Extensometer data vs. tensile strain