Novel micro-flat springs using the superior elastic properties of metallic glass foils

Abstract

A thin metallic glass foil of 100 mg massforming a sinusoidal arc behaves as nonconventional flat micro-spring withstanding loads 10 5 times higher than its load. Upon a normal load applied on the top of the arc, the foil deforms elastically leading to sinusoidal wavy patterns of higher order. The lifespan of the novel spring is higher than conventional low cycle springs and can potentially be further improved by eliminating surface and edge preparation induced defects. This unique behaviour of metallic glass foils has the potential to revolutionize the field of springs and can be exploited for numerous applications.

On a new electromechanical switch using the reversible wavy elastic response of metallic glass ribbons

“…Recently, Aljerf et al [14] have shown the thermomechanical wavy shaping of vitrified ribbon without thermal embrittlement. In our recent work [15], we experimentally showed the possible use of the reversible wavy elastic response as a novel micro-flat-spring.…”