Chapter: Testing
44
M20-52630-1-EN
Working in Strain Control
Before using your extensometer for strain
control, it is our strong recommendation
that you carry out your own risk
assessment.
Warning
Before the extensometer is used in strain
control:
•
Ensure that the extensometer is
securely attached to the specimen.
•
Ensure that the extensometer is
calibrated.
•
Set Position, Load and Strain limits.
Hazard - The test machine may
become unstable in strain control
if the extensometer becomes
detached during testing.
Once the extensometer becomes
detached from the specimen, the
capacity to measure changes to the
specimen is removed. The controller
continues to apply the test
parameters without receiving
feedback signals thus leading to an
unstable system.
