Glass fracture by focusing of laser-generated nanosecond surface acoustic waves

SCRIPTA MATERIALIA

卷:158

Article

Veysset, David^1,2  Kooi, Steven E.¹  Haferssas, Ryadh^1,3  Hassani-Gangaraj, Mostafa⁴  Islam, Mohammad^1,3  Maznev, A. A.^1,2  Chernukha, Yevheniia⁵  Zhao, Xiaoguang⁶  Nakagawa, Keiichi^7,9  Martynowych, Dmitro^1,2  Zhang, Xin⁶  Lomonosov, Alexey M.⁸  Schuh, Christopher A.⁴  Radovitzky, Raul^1,3  Pezeril, Thomas⁴  Nelson, Keith A.^1,2 

[1] MIT, Inst Soldier Nanotechnol, Cambridge, MA 02139 USA

[2] MIT, Dept Chem, Cambridge, MA 02139 USA

[3] MIT, Dept Aeronaut & Astronaut, Cambridge, MA 02139 USA

[4] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

[5] Univ Maine, Inst Mol & Mat Mans, UMR CNRS 6283, F-72085 Le Mans, France

[6] Boston Univ, Dept Mech Engn, Boston, MA 02215 USA

[7] Univ Tokyo, Dept Bioengn, Tokyo 1138656, Japan

[8] Prokhorov Gen Phys Inst RAS, Moscow, Russia

[9] Univ Tokyo, Dept Precis Engn, Tokyo 1138656, Japan

关键词: Dynamic fracture;    Surface acoustic waves;    Interferometry;    Glass;   

DOI  :  10.1016/j.scriptamat.2018.08.026

来源: Elsevier

【 摘 要 】

Dynamic fracture of borosilicate glass through focusing of high-amplitude nanosecond surface acoustic waves (SAWs) at the micron scale is investigated in an all-optical experiment. SAWs are generated by a picosecond laser excitation pulse focused into a ring-shaped spot on the sample surface. Interferometric images capture the SAW as it converges towards the center, focuses, and subsequently diverges. Above a laser energy threshold, damage at the acoustic focal point is observed. Numerical calculations help us determine the time evolution of the stress distribution. We find that the glass withstands a local tensile stress of at least 6 GPa without fracture. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free