How does length affect tensile strength

Facebook Twitter LinkedIn Pinterest. Related Posts. Tensile Testing FAQs. Specimen Alignment in Material Testing. Measurement Errors in Material Testing. Remember me Login. Sales Support Calibration Calculators. Go to Top. Instead of taking all 10 sections as the gauge length in our tensile bar, what if we considered only the central two sections shown in red in Fig.

Here, we estimate a percent increase in length as compared to the initial sections. We are averaging over a smaller region, so our measured strains increase. From each, we can find the appropriate tensile-bar shape for testing of sheetmetal products. These tensile-bar shapes exhibit significant differences in width and gauge length Table—Differences in Tensile Bars and Fig. These shape differences mean that elongation performance will change depending on the test-sample standard used, even when testing identical material.

With the combination of the shortest gauge length and widest sample, elongation from JIS bars typically are higher than what would be generated from the other shapes. Yield strength and tensile strength are not functions of the shape of the tensile bar. The definition of strength: load divided by the cross-sectional area.

Even though each of the bars feature a different sample width and, therefore, a different cross-section , the load is normalized by this value, which negates differences from sample shape.

There was a time when all test results received from your service center likely came from ASTM tests. In the s, New Domestic automakers, primarily from Japan and Germany, ramped up production within the United States. For a host of reasons, they sourced significant tonnage with U. Nature , — Download citation. Issue Date : 03 March Anyone you share the following link with will be able to read this content:. Sorry, a shareable link is not currently available for this article.

Provided by the Springer Nature SharedIt content-sharing initiative. Nature By submitting a comment you agree to abide by our Terms and Community Guidelines. Google Scholar. Thorne DJ Nature CAS Google Scholar. Download references. You can also search for this author in PubMed Google Scholar. Correspondence to Kimiyoshi Naito.

Reprints and Permissions. Naito, K. The effect of gauge length on tensile strength and Weibull modulus of polyacrylonitrile PAN - and pitch-based carbon fibers. J Mater Sci 47, — Download citation.