PSI - Issue 28

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

www.elsevier.com/locate/procedia

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ScienceDirect

Procedia Structural Integrity 28 (2020) 584–590

© 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 © 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 A new destructive method of damage accumulation quantifying in the stress concentration zone has been proposed and verified. Damage accumulation in the vicinity of the hole was created by means of preliminary low-cycle fatigue loading of specimens with holes. The damage accumulation functions for different stress ratio and stress range are expressed in an explicit form proceeding from distributions of the normalized stress intensity factor as a function of number of cycles. © 2020 The Authors. Published by ELS VIER 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 A new destructive method of damage accumulation quantifying in the stress concentration zone has been proposed and verified. Damage accumulation in the vicinity of the hole was created by means of preliminary low-cycle fatigue loading of specimens with holes. The damage accumulation functions for different stress ratio and stress range are expressed in an explicit form proceeding from distributions of the normalized stress intensity factor as a function of number of cycles. Keywords: Damage accumulation; Low-cycle fatigue; Crack compliance method; Fracture mechanics parameters 1st Virtual European Conference on Fracture Investigation of fatigue damage accumulation by measurements of deformation response to narrow notch increment Y. Matvienko a, *, V. Pisarev b , S. Eleonsky b , a Mechanical Engineering Research Institute of the Russian Academy of Sciences, 4 Maly Kharitonyevsky Pereulok, Moscow, 101990 Russia b Central Aero-Hydrodynamics Institute named after Prof. N.E. Zhukovsky (TsAGI), Zhukovsky Moscow Region, 140180 Russia 1st Virtual European Conference on Fracture Investigation of fatigu damage accumulati n by m asurements of deformation response to narrow notch increment Y. Matvienko a, *, V. Pisarev b , S. Eleonsky b , a Mechanical Engineering Research Institute of the Russian Academy of Sciences, 4 Maly Kharitonyevsky Pereulok, Moscow, 101990 Russia b Central Aero-Hydrodynamics Institute named after Prof. N.E. Zhukovsky (TsAGI), Zhukovsky Moscow Region, 140180 Russia Abstract Abstract

Keywords: Damage accumulation; Low-cycle fatigue; Crack compliance method; Fracture mechanics parameters

Nomenclature     , , D N R m m i I K R N   Nomenclature     , , D N R m m i I K R N   , , ) ) ( , 1 ( , 1 i m i m

damage accumulation function mode I stress intensity factor damage accumulation function mode I stress intensity factor number of cycles stress ratio number of cycles

m N m N R R

stress ratio

* Corresponding author. Tel.: +7-916-100-91-55; E-mail address: ygmatvienko@gmail.com * Corresponding author. Tel.: +7-916-100-91-55; E-mail address: ygmatvienko@gmail.com

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 EL EVIER 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 under responsibility of the European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.10.068