PSI - Issue 42

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ^ĐŝĞŶĐĞ ŝƌĞĐƚ

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Procedia Structural Integrity 42 (2022) 251–258

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the 23 European Conference on Fracture – ECF23 Abstract The use of glass in structural applications has been increasing during last years. Nevertheless, the generalized use of surface modified bearing glass is precluded by the lack of knowledge about their mechanical performance. This experimental investigation carries out the assessment of the fracture toughness and strength of glass subjected to laser blasting. Annealed glass and heat strengthened glass plates were subjected to mid-infrared laser surface treatment to increase the surface roughness and improve the slip resistance in wet conditions. The fracture toughness and fracture surface energy were experimentally determined from the observed radial cracks after micro-indentation with a pyramidal diamond indenter, and the results were analyzed in correlation to the laser processing conditions and the obtained surface roughness. The Weibull graph and the cumulative failure probability of the as-received and laser-modified glass were obtained by the four-point bending test. © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of 23 European Conference on Fracture - ECF23 Keywords: Glass; laser blasting; fracture toughness; bending strength 1. Introduction The use of glass in structural applications has been increasing during last years. The structural applications of glass as horizontal load bearing elements, such as footbridges, terraces, or floors frequently incorporate slip-resistant surfaces to avoid slipperiness, an undesired occurrence that is related to a very elevated amount of fall accidents. These non-fatal fall accidents are very frequent and have an important economic impact according to Timsina et al. This is an open access article 23 European Conference on Fracture - ECF23 Experimental study of strength and fracture toughness of laser-blasted glass Erik Calvo-García a,b , Rafael Comesaña a,b, * , Antonio Riveiro a,b , Jesús del Val a , Aida Badaoui b , Félix Quintero a,c , Mohamed Boutinguiza a,c , Fernando Lusquiños a,c , Juan Pou a,c a LaserOn, CINTECX, University of Vigo, Lagoas-Marcosende, Vigo, 36310, Spain b Materials Engineering, Applied Mechanics and Construction Dept., EEI, University of Vigo, Lagoas-Marcosende, Vigo, 36310, Spain c Dept. of Applied Physics, University of Vigo, EEI, Lagoas-Marcosende, 36310 Vigo, Spain o

* Corresponding author. E-mail address: racomesana@uvigo.es

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of 23 European Conference on Fracture - ECF23

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the 23 European Conference on Fracture – ECF23 10.1016/j.prostr.2022.12.031