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Examining Specimen Bending Strain and Computing Misalignment Correction for Axial Load Frame Material Testing
Technical Paper
2005-01-0804
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Specimen grips in an axial load frame typically have a small misalignment that imposes bending strain on the clamped specimen. The bending strain causes variability in the material test results, especially in fatigue testing of brittle materials. This paper introduces new techniques for aiding load frame alignment. Examining the source of the bending strain identifies how much of the bending strain is due to the specimen imperfections versus the machine misalignment. Quantifying the misalignment components provides criteria for automating the setscrew adjustment selection of the alignment process.
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Authors
Citation
Ellis, R., "Examining Specimen Bending Strain and Computing Misalignment Correction for Axial Load Frame Material Testing," SAE Technical Paper 2005-01-0804, 2005, https://doi.org/10.4271/2005-01-0804.Also In
References
- “A Procedure for the Measurement of Machine Alignment in Axial Testing” Versailles Project on Advanced Materials and Standards (VAMAS)
- “Standard Practice for Verification of Specimen Alignment Under Tensile Loading” ASTM