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

SCRIPTA MATERIALIA

卷:131

Article

Yousfi, M. A.^1,2  Panagiotopoulos, N. T.¹  Jorge Junior, A. M.^1,3  Georgarakis, K.^1,4,5  Yavari, A. R.^1,4 

[1] Grenoble INP, EURONANO, SIMaP, CNRS UMR 5266, BP 75,1130 Rue Piscine, F-38402 St Martin Dheres, France

[2] Univ Sousse, ENISo, LMS, Technopole Sousse,BP 264,Cite Erriadh, Sousse 4023, Tunisia

[3] Federal Univ Sao Carlos, Dept Mat Engn, Via Washington Luiz,Km 235, BR-13565905 Sao Carlos, SP, Brazil

[4] Tohoku Univ, WPI AIMR, Sendai, Miyagi 980, Japan

[5] Cranfield Univ, Sch Aerosp Transport & Mfg, Cranfield MK43 0AL, Beds, England

关键词: Metallic glasses;    Wavy elastic response;    Buckling;    Flat micro springs;    Fatigue resistance;   

DOI  :  10.1016/j.scriptamat.2017.01.012

来源: Elsevier

【 摘 要 】

A thin metallic glass foil of 100 mg mass forming a sinusoidal arc behaves as non-conventional flat micro-spring withstanding loads 105 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 behavior of metallic glass foils has the potential to revolutionize the field of springs and can be exploited for numerous applications. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free