PSI - Issue 40

ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com Sci nceDire t Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 40 (2022) 258–263

© 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 the15th International Conference on Mechanics, Resources and Diagnostics of Materials and Structures. Abstract The work is devoted to the experimental study of polymer composite materials samples with different types of reinforcement to assess the breaking force during tests for uniaxial tension and tension of samples with an open hole. The paper presents an analysis of the mechanical behavior of CFRP specimens with a round concentrator and solid specimens without a concentrator, obtained using special technologies, based on a number of different spatial reinforcing frames. An assessment of the sensitivity of a particular reinforcement scheme to the presence of a hole has been carried out. © 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 the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. Keywords: carbon-fiber composite; 3D reinforced composite; digital image correlation 1. Introduction The disadvantage of traditional polymer composite materials in the form of textolites and laminates is their low interlayer strength. To eliminate this disadvantage, spatially reinforced fillers or 3D fabrics are proposed for use. 3D woven composites based on traditional weaving technology offer better thickness characteristics and higher toughness than traditional laminated composites. In work [F. Xu et al (2018)], the mechanisms of fracture for three dimensional orthogonal woven composites of glass/epoxy with drilled and molded holes were investigated using X- Influence of structural features of spatially reinforced and laminated fiber carbon plastics on the nature of deformation and fracture Lobanov D.S., Strungar E.M.* Center of Experimental Mechanics, Perm National Research Polytechnic University, Komsomolsky prospekt, 29, Perm, 614990, Russia Abstract The work is devoted to the experimental study of polymer composite materials samples with different types of reinforcement to ass ss the breaking f rce during tests for niaxial tension and tension of samples with an open hole. The paper p esents an naly is of th mechani al behavior of CFRP specim with a round concentrator and solid s cimens without a concentrator, obtained using sp i l technologies, based on a numb r of d fferent spatial rei forcing frames. An assessmen f the se sitivity of a p rticular reinfor ement schem to the presence of a h le has been c rried out. © 2022 The Authors. Publis d 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 u der responsibility of scientific committe of the15th International C ference on Mechanics, Resource and Diagnostics of Materials and S ructur s. Keywords: carbon-fib composite; 3D reinforced composite; digital image correlation 1. Introduction The disadvantage of traditional polymer composite materials in the form of textolites and laminates is their low interlayer strength. To eliminate this disadvantage, patially reinforced fillers r 3D fabrics are propos d for use. 3D woven composites based on traditional weaving technology offer better thickness characteristics and higher tough ess than traditional laminated composites. In work [F. Xu et al (2018)], t e m chanisms of fracture for three dimensional orthogonal woven composites of glass/ep xy with drilled and molded holes were investigated using X 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures Influence of structural features of spatially reinforced and laminated fiber carbon plastics on the nature of deformation and fracture Lobanov D.S., Strungar E.M.* Center of Experimental Mechanics, Perm National Research Polytechnic University, Komsomolsky prospekt, 29, Perm, 614990, Russia 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Stru tures

* Corresponding author. Tel.: +7-950-454-6321. E-mail address: cem.spaskova@mail.ru * Corresponding author. Tel.: +7-950-454-6321. E-mail ad ress: cem.spaskova@mail.ru

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 the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. 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 u der re ponsibility of scientific committe of the15th Int rnational C ference o Mechanics, Resource and Diagnostics of Mate ials and Structures.

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 the15th International Conference on Mechanics, Resources and Diagnostics

of Materials and Structures. 10.1016/j.prostr.2022.04.035