Influence of groove characteristics on strength of form-fit joints

Electromagnetic forming—A review

“…Most of the relevant literature dealing with coil development aims at designing durable coils, but according to Baines et al (1965) especially for the manufacturing of prototypes also disposable tool coils (which are often referred to as single-shot coils) represent an interesting alternative. As it can be concluded from the feasibility study performed by Woodward et al (2011), this topic is still relevant today. Lange (1993) states that for a durable coil, a tool life of 10 6 pulses is desirable, but there exist only very few papers in the literature, which contain some information about the durability.…”

“…Thiruvarudchelvan (2002) indicates that for the forming of aluminum, flexible tools made of Polyurethane and rubber can be applied instead of conventional tools made of steel. In Woodward et al (2011) a rubber pad is successfully used for the calibration of aviation components by means of electromagnetic forming.…”

“…Regarding failure modes, according to Weddeling et al (2011) • Failure in the form of a detachment between the joining partners and • failure in the form of cracking of a joining partner can be distinguished.…”

“…With regard the force-elongation curves Weddeling et al (2011) report that failure due to cracking of a joining partner occurs more suddenly. With respect to DIN 7182 Bühler and von Finckenstein (1968b) identified two especially significant values.…”

“…In recent work Weddeling et al (2011) studied the influence of different groove shapes (rectangular, circular, and triangular) and of the charging energy on the pull-out force considering different groove measurements. In this study the following four strengthening mechanisms were identified:…”