US Patent Number
A method of predicting sheet formability at a microscale level includes the steps of providing a grid pattern on a test sheet, bulging the test sheet to a hemispherical shape until a crack is initiated on the surface of the test sheet, detecting the initiation of the crack, acquiring two images of the surface adjacent to the crack and calculating surface strains on the test sheet.
University of Kentucky Research Foundation, Lexington, KY (US)
Shuaib, Nasr A. and Khraisheh, Marwan K., "Method and Apparatus for Characterizing Microscale Formability of Thin Sheet Materials" (2013). Mechanical Engineering Faculty Patents. 1.