Title: Hole-flanging of metals and polymers produced by single point incremental forming

Authors: Valentino A.M. Cristino; Maria Beatriz Silva; Pak Kin Wong; Lap Mou Tam; Paulo A.F. Martins

Addresses: Department of Electromechanical Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, China ' Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal ' Department of Electromechanical Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, China ' Department of Electromechanical Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, China ' Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal

Abstract: This paper presents recent developments in hole-flanging of metal and polymers produced by single point incremental forming (SPIF) to gaining insight into the deformation mechanics of the process and providing guidelines to foster its application in rapid prototyping and small batch production of customised sheet products. Experimentation with stainless steel AISI 304L and polyethylene terephthalate (PET) that comprised mechanical characterisation and utilisation of circle grid analysis in conjunction with the formability limit diagram gives support to the presentation and allows understanding the fundamentals of plastic flow and failure in hole-flanging produced by single point incremental forming and their main differences to hole-flanging produced by conventional pressworking.

Keywords: hole flanging; single point incremental forming; SPIF; formability; metals; polymers; deformation mechanics; rapid prototyping; small batch production; customised sheet products; stainless steel; polyethylene terephthalate; PET; circle grid analysis; formability limit diagram; FLD; plastic flow; failure.

DOI: 10.1504/IJMPT.2015.066865

International Journal of Materials and Product Technology, 2015 Vol.50 No.1, pp.37 - 48

Received: 10 Dec 2013
Accepted: 01 Aug 2014
Published online: 13 Jan 2015 *

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