PSI - Issue 25

Available online at www.sciencedirect.com

ScienceDirect

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

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 25 (2020) 13–18

© 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 the VCSI1 organizers The critical energy release rate is one of the most important material properties used in fracture mechanics calculations, in particular, an estimation of a structural residual life. The determination of this material property can be performed in numerous standardized tests, depending on the desired crack extension mode. However, some parameters of such tests are not discussed in standards and are not taken into consideration during the determination of the critical energy release rate. In this study, the authors present results of their experimental studies for quasi-static and fracture tests on double cantilever beam specimens made of glass and carbon reinforced polymeric composite structures. The results of these studies show the influence of technological aspects of the specimens ’ preparation as well as data acquisition during performing experiments on the final results. These results will be used for a developed reversed numerical model for a prediction of the residual life of composite structures containing barely visible impact damage. © 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 the VCSI1 organizers Peer-review under 1st Virtual Conference on Structural Integrity - VCSI1 Remarks on quasi-static and interlaminar fracture toughness tests of composite structures Angelika Wronkowicz-Katunin a, *, Andrzej Katunin a , Wojciech Danek b a Silesian University of Technology, Department of Fundamentals of Machinery Design, Konarskiego 18A, 44-100 Gliwice, Poland b Silesian University of Technology, Department of Theoretical and Applied Mechanics, Konarskiego 18A, 44-100 Gliwice, Poland r a, a b Abstract

Keywords: fracture; critical energy release rate; quasi-static tests; polymeric composites

1. Introduction

Due to the intensive development of the industry, there are more and more demands for materials in terms of their strength, mass, reliability, and impact on the natural environment. Consequently, conventional materials, such as

* Corresponding author. Tel.: +48-32-237-1392; fax: +48-32-237-1360. E-mail address: angelika.wronkowicz-katunin@polsl.pl

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 the VCSI1 organizers

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 the VCSI1 organizers 10.1016/j.prostr.2020.04.004