Rapidly Vaporizing Conductors Used for Impulse Metal Working

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dc.contributor.authorVivek, Anupam
dc.dateForming, cutting and welding of metal by impulse has significant advantages, in that short time scales change the fundamental nature of the forming process and short duration impulses can be used with much lighter and more agile equipment because large static forces do not need to be resisted. Impulse forming is most commonly executed using electromagnetic forming. The application of electromagnetic forming is limited at high energies and large numbers of operations by the availability of long-lived electromagnetic coils (or actuators, as they are sometimes referred to). Low-cost, disposable actuators have been suggested as one method to treat this issue. Here we propose the use of low-cost foils or wires that are intentionally vaporized by a pulsed electric current to create an intense mechanical impulse. Here, a simple cutting and welding experiment is demonstrated as driven using a vaporized aluminum foil and further original experiments study the expansion of simple copper tubes using the impulse developed from copper and aluminum wires that are vaporized using capacitor bank discharge with nominal charged voltages between 3.4 kV and 6.7 kV, and peak currents between 60 kA and 150 kA delivered with rise times on the order of 20 μs. This gives some guidance on how forming operations may be designed and fruitful avenues for further research.en
dc.date.accessioned2012-07-17T14:37:58Z
dc.date.available2012-07-17T14:37:58Z
dc.date.issued2012-07-17
dc.identifier.urihttp://hdl.handle.net/2003/29529
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-4857
dc.language.isoende
dc.relation.ispartof5th International Conference on High Speed Forming, April 24th - 26th 2012, Dortmund, Germanyen
dc.subjectbridgewireen
dc.subjectimpulse formingen
dc.subjectPDVen
dc.subject.ddc620
dc.subject.ddc670
dc.titleRapidly Vaporizing Conductors Used for Impulse Metal Workingen
dc.typeTextde
dc.type.publicationtypeconferenceObjectde
dcterms.accessRightsopen access

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