PSI - Issue 41

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

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

ScienceDirect

Procedia Structural Integrity 41 (2022) 326–332

© 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 MedFract2Guest Editors. Abstract Metal structures of seaport equipment are operated under high-cycle loading, and this peculiarity is primarily taken into account in well-known approaches to their service life assessment. These approaches consider the as-received state of metal and regulate its mechanical properties. However, such procedures are unsuitable for substantiating the safe excessive operation of steel structures, since they don’t take into account the degradation of the mechanical properties of metal during its long -term operation under intense cyclic loading. Two crucial factors in the serviceability loss of hoisting and transport equipment during their long term operation have been analysed. The former is intensive cyclic loading which promotes the development of fatigue damage and initiates the growth of fatigue cracks. Another one lies in the detrimental effect of the marine environment in the operational degradation of port metal structures since the marine atmosphere could be not only corrosive but also has hydrogenating capabilities. Hydrogenation, in turn, contributes to the in-service loss in metal plasticity and, from the other side, accelerates fracture by the hydrogen embrittlement mechanism. © 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 MedFract2Guest Editors. Keywords: hoisting and transporting equipment; fatigue; impact toughness; service life; excessive operation; operational degradation 2nd Mediterranean Conference on Fracture and Structural Integrity Analysis of operational factors affecting the serviceability of seaport hoisting and transporting equipment Hryhoriy Nykyforchyn a *, Vitaliy Pustovyi b , Olha Zvirko a , Pavlo Semenov b , Myroslava Hredil a , Oleksiy Nemchuk b , Oleksandr Oliynyk b , Oleksandr Tsyrulnyk a a Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine, 5, Naukova St., 79060 Lviv, Ukrain b Odessa National Maritime University, 34, M chnikova St., 65029 Odesa, Ukraine Abstract Metal structures of seaport equipment are operated under high-cycle loading, and this peculiarity is primarily taken into account in well-known approaches to their servic lif ssessment. These appr ches co sider th as-received state of metal a d regulate ts mechanical roperti s. However, such procedures are un uitable for ubstantiating the safe excessive operation of steel s ructures, since they don’t take into account the deg adation of the m chanical proper es of metal during its long -term opera ion under inten e yclic loading. Two cru ial fac ors in the serviceability loss of hoisting and transport equipment during their long term operation have been analysed. The forme is int n ive ycl c loading w ich promotes the dev lop ent of fati ue dama e and initiates the growth of fatigu cracks. Another o lies in the detrime tal effect of the marine nviron ent in the oper tional degradation of port metal s ructures since the marine atmosphere could b no nly cor osiv but also has ydrogenati g capabili es. Hydr genation, in turn, contributes to the in-service loss in metal plasticity and, from the other side, accelerates fr cture by the hydrogen embrittlement mechani m. © 2022 The Autho s. 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 MedFract2Guest Editors. K ywords: hoisting and tra sporting equipment; fatigue; impact toughness; service life; excessive operation; operational degradation 2nd Mediterranean Conference on Fracture and Structural Integrity Analysis of operational factors affecting the serviceability of seaport hoisting and transporting equipment Hryhoriy Nykyforchyn a *, Vitaliy Pustovyi b , Olha Zvirko a , Pavlo Semenov b , Myroslava Hredil a , Oleksiy Nemchuk b , Oleksandr Oliynyk b , Oleksandr Tsyrulnyk a a Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine, 5, Naukova St., 79060 Lviv, Ukraine b Odessa National Maritime University, 34, Mechnikova St., 65029 Odesa, Ukraine

* Corresponding author. Tel.: +380 322 294213; fax: +380 322 649427. E-mail address: hnykyforchyn@gmail.com * Corresponding author. Tel.: +380 322 294213; fax: +380 322 649427. E-mail address: hnykyforchyn@gmail.com

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 MedFract2Guest Editors. 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 responsibility of t MedFract2Guest Editors.

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 MedFract2Guest Editors. 10.1016/j.prostr.2022.05.038