|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Aluminum Alloys, Processing and Characterization
||Comparison of ASTM Grid and ISO Digital Image Correlation Methods on Determination of Forming Limit Curves for an Aluminum Alloy
||Randall Bowers, Xiyu Wen, Shridas Ningileri
|On-Site Speaker (Planned)
The ASTM method and the ISO method of determining the forming limit curve (FLC) for sheet products differs in both the manner of strain measurement and the method of determining major-minor limit strain points along the curve. These differences have the potential to result in different FLC’s for a given sheet product. In this study, the two methods are compared in both the method of measurement of the strain points and the method of determining the forming limits for an aluminum alloy sheet. The study compares an electroetched grid against the use of stochastic patterning in determining major-minor strains; a comparison is also made of the means of determining the limit strains as outlined in ASTM E2218-15 and ISO 12004-2:2008. The tooling of the study uses a 100 mm hemispherical ball Nakajima tooling for both methods.
||Planned: Light Metals