PSI - Issue 28

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

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

Procedia Structural Integrity 28 (2020) 1702–1708

© 2020 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 European Structural Integrity Society (ESIS) ExCo Abstract Composite materials based on a carbon fiber and a carbon matrix (C/C composites) are widely used in brake systems and other friction units with high loads and temperatures on the friction surface. The variety of structure and properties of the components of carbon composites causes different wear mechanisms during friction of these materials. The paper is considered samples of carbon friction composites of various structures and compositions used in aircraft brakes. These materials demonstrate numerous mechanisms of surface destruction during wear, often even for the same sample, due to the significant heterogeneity of the composite structure. The determination of these mechanisms and their parameters is an important part of the study of carbon composites. For these purposes, combination of scanning probe microscopy (SPM) and scanning electron microscopy (SEM) can be used. © 2020 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 European Structural Integrity Society (ESIS) ExCo Keywords: Type your keywords here, separated by semicolons ; 1st Virtual European Conference on Fracture The study of the surface fracture during wear of C/C fiber composites by SPM and SEM A.G. Shpenev a *, T.I. Muravyeva a , I.V. Shkalei a , V.V.Kulakov b , A.K. Golubkov b a Ishlinsky Institute for Problems in Mechanics RAS, Pr. Vernadskogo 101-1, Moscow, 119526, Russia b Rubin Aviation Corporation (JSC AC “RUBIN”), Entuziastov shosse 5, Zapad ya promzona, Balashikha, Moscow Region, 143900, Russia Abstract Composite materials based on a carbon fiber and a carbon matrix (C/C composites) are widely used in brake systems and other friction units with high loa s and temperatures on the f iction su face. The variety of structure and properties of the co po ents of carb compos es causes ifferent wea mechanisms during friction of these materials. The paper is considered samples f carb n fricti composites of var ous structu es and co positions used in aircraft b akes. These material demonstrat nume ous mecha isms of surface destr ction d ring wear, often even for the s me sample, due to the sign ficant heterogeneity of the compos te tructure. The determination of th se mechanisms and their parameters is an important part of th study of carbon s. For th se purpos s, combi ation of scanning probe microsco y (SPM) and scanning electron microscopy (SEM) ca be used. © 2020 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 responsibility of European Structural Integri y Soci ty (ESIS) ExC Keywords: Type your keywords here, separated by semicolons ; The study of carbon composite friction surface by SEM methods allows determining the area of friction, identifying regions with di ferent structures o the material and estimating its areas. Thus, we get a map of the fricti surface, on wh ch reg ons with different mechanis s of surface destruction during friction are indicated. The sele ted regions ca be nvestigated by SPM methods to obtain a det ile t ture of the friction surface and etermine its p ofile at the micro level. This specifies the wear mechanism in ach egion, and allows estimating param s of the wear process. 1st Virtual European Conference on Fracture The study of the surface fracture during wear of C/C fiber composites by SPM and SEM A.G. Shpenev a *, T.I. Muravyeva a , I.V. Shkalei a , V.V.Kulakov b , A.K. Golubkov b a Ishlinsky Institute for Problems in Mechanics RAS, Pr. Vernadskogo 101-1, Moscow, 119526, Russia b Rubin Aviation Corporation (JSC AC “RUBIN”), Entuziastov shosse 5, Zapadnaya promzona, Balashikha, Moscow Region, 143900, Russia The study of carbon composite friction surface by SEM methods allows determining the area of friction, identifying regions with different structures of the material and estimating its areas. Thus, we get a map of the friction surface, on which regions with different mechanisms of surface destruction during friction are indicated. The selected regions can be investigated by SPM methods to obtain a detailed structure of the friction surface and determine its profile at the micro level. This specifies the wear mechanism in each region, and allows estimating parameters of the wear process.

* Corresponding author. E-mail address: kel-a-kris@list.ru * Corresponding author. E-mail address: kel-a-kris@list.ru

2452-3216 © 2020 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 European Structural Integrity Society (ESIS) ExCo 2452-3216 © 2020 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 responsibility of t European Structural Integrity Soci ty (ESIS) ExCo

2452-3216 © 2020 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 European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.10.145