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Method and Apparatus for Fracturing Metal

IP.com Disclosure Number: IPCOM000075720D
Original Publication Date: 1971-Nov-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Cheney, RE: AUTHOR

Abstract

This apparatus comprises a pair of metal blocks 10 and 11 whose surfaces 12 and 13 are adapted to clamp therebetween, a strip 14 of ductile material. Each of blocks 10 and 11 includes complementary hollow openings 15 and 16 holding piezoelectric crystals 17 and 18, and movable anvils 19 and 20.

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Method and Apparatus for Fracturing Metal

This apparatus comprises a pair of metal blocks 10 and 11 whose surfaces 12 and 13 are adapted to clamp therebetween, a strip 14 of ductile material. Each of blocks 10 and 11 includes complementary hollow openings 15 and 16 holding piezoelectric crystals 17 and 18, and movable anvils 19 and 20.

When crystals 17 and 18 are energized in complementary fashion strip 14 at the interface of the two anvils 19 and 20 is alternately displaced normal to its general flat surface 12-13. The stresses thus generated cause strip 14 to change state and to fracture, without the loss of material, along the lines of alternate displacement defined by the cross-sectional shape of anvils 19 and 20. After energization of crystals 17 and 18, strip 14 is removed and the square piece of material which has been cut from strip 14 is removed by an air blast.

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