Glass fracture by focusing of laser-generated nanosecond surface acoustic waves. (1st January 2019)

• Record Type: Journal Article
• Authors: Veysset, David; Kooi, Steven E.; Haferssas, Ryadh; Hassani-Gangaraj, Mostafa; Islam, Mohammad; Maznev, A.A.; Chernukha, Yevheniia; Zhao, Xiaoguang; Nakagawa, Keiichi; Martynowych, Dmitro; Zhang, Xin; Lomonosov, Alexey M.; Schuh, Christopher A.; Radovitzky, Raul; Pezeril, Thomas; Nelson, Keith A.
• Is Part Of: Scripta materialia. Number 158(2019)
• Page Start: 42
• Page End: 45
• Publication Date: 2019-01-01
• Subjects: Dynamic fracture -- Surface acoustic waves -- Interferometry -- Glass; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.08.026
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: 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. Graphical abstract: Unlabelled Image