Investigation of Deformation Phenomena in SPIF Using an In-Process DIC Technique
Single point incremental forming (SPIF) is a promising new production technique in which a metal sheet is formed stepwise by a spherical tool. However, the technique still shows some particularities. It is observed that the final geometry of a SPIF part can deviate significantly from the programmed tool path. As illustrated in this paper, elastic springback is only to a minor extent responsible for this phenomenon. The goal of the presented paper is to illustrate the gradual emergence of unintended deviations as measured by means of a Digital Image Correlation (DIC) technique. Two CCD cameras were used to take the necessary in-process images. The mechanism of deformation in function of the forming depth is documented and discussed.
B. Shirvani, R. Clarke, J. Duflou, M. Merklein, F. Micari and J. Griffiths
I. Vasilakos et al., "Investigation of Deformation Phenomena in SPIF Using an In-Process DIC Technique", Key Engineering Materials, Vols. 410-411, pp. 401-409, 2009