Definition of strain limits for high-temperature wire strain gages
April 28, 2025
Brief report
We recently conducted experimental tests to evaluate the performance of HPM STN-series wire strain gages under large deformations.
Using a custom test rig and comparing them with Zemic THY120-5AA(15%)-C strain gages, we explored how different adhesives affected performance.
Key findings:
-
Our strain gages withstood deformations up to 10%.
-
Adhesive performance plays a critical role: UV-curable adhesives failed earlier, while Zemic H-716 adhesive allowed greater deformation but still showed partial cracking.
Conclusion:
STN120-3AA-A900-N015 strain gages are capable of handling significant strain, but actual limits depend heavily on the adhesive used.
Download datasheet below to see full test-report
Download datasheet
