Maria Beatriz Silva

TL;DR: In this article, an experimental method to determine the formability limits by fracture in sheet metal forming is described, which makes use of laboratory test specimens commonly utilized in the mechanical, fracture and formability characterization of sheet materials and involves determination of the gauge length strains at the cracked regions of the specimens after testing.

TL;DR: In this paper, the authors present an overall experimental investigation of polycarbonate sheets deformed by single point incremental forming, aiming the identification of the influence of the main process parameters in the material formability and the resulting mode of failure.

TL;DR: In this article, the theoretical and experimental background to the utilization of circle grid analysis in conjunction with formability and simulative laboratory tests at undergraduate and graduate courses of metal forming with the objective of exposing students to machine-tools, tool systems and practical problems that are commonly found in daily production of sheet metal parts.

TL;DR: In this article, the deformation mechanics of the flexible roll forming process is revisited, and the methodology for predicting the onset of wrinkling, which had previously been developed based on the wrinkling limit curve in the space of effective strain versus stress triaxiality, is improved.

TL;DR: In the late 1960s, pioneer works by Keeler as discussed by the authors were published in the early 1970s, and they were later published in 1990s and 2000s, respectively.