PSI - Issue 42

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ^ĐŝĞŶĐĞ ŝƌĞĐƚ Structural Integrity Procedia 00 (2019) 000 – 000 il l li t . i ir t. tr t r l I t rit r i ( )

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ScienceDirect

Procedia Structural Integrity 42 (2022) 18–26

© 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 the 23 European Conference on Fracture – ECF23 Abstract This paper provides a methodology for the estimation of the load-bearing capacity of additively manufactured (AM) PLA specimens that may be applied to both cracked and notched conditions. The methodology is based on the use of Failure Assessment Diagrams (FADs), which are, in practice, the main fracture-plastic collapse assessment tool provided by structural integrity assessment procedures. When dealing with notch-type defects, the methodology requires, additionally, the application of a notch correction that it is based on the Theory of Critical Distances (TCD) and the Creager-Paris stress distribution ahead of the crack tip. The results show that the FAD methodology (alone, in cracked conditions, or in combination with the TCD in notched conditions) can be successfully applied in this AM polymer. © 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 23 European Conference on Fracture - ECF23 Keywords: Additively Manufactured; PLA; Notch; Failure Assessment Diagram 1. Introduction When dealing with structural failures in the presence of crack-like defects, assessment criteria are provided by structural integrity assessment procedures (e.g., FINTET FFS (Kocak et al. (2008) and Gutierrez-Solana and Cicero (2009)), BS7910 (2019), API 579 ‐ 1/ASME FFS ‐ 1 (2016)), most of which are based on Failure Assessment i r r i t l f r t ti ti f t l - ri it f iti l f t r ( ) i t t li t t r t iti . t l i t f il r t i r ( ), i r , i r ti , t i fr t r - l ti ll t t l r i tr t r l i t rit t r r . li it t -t f t , t t l r ir , iti ll , t li ti f t rr ti t t it i t r f riti l i t ( ) t r r- ri tr i tri ti f t r - ti . r lt t t t t l ( l , i r iti , r i i ti it t i t iti ) f ll li i t i l r. 2 t r . li h l i r . . This is an open access article under the CC BY-NC- D li nse (http://creativeco .or /li / - - / . /) r-r i r r i ilit f r f r r t r - r s: iti l f t r ; ; t ; il r ss ss t i r . i li it t t l il i t li t , t it i i t t l i t it t . ., t l. ti l i , , / , t i il 23 European Conference on Fracture - ECF23 Analysis of additively manufactured PLA containing notches using Failure Assessment Diagrams Sergio Cicero a *, Víctor Martínez-Mata a , Marcos Sánchez a , Sergio Arrieta a a LADICIM (Laboratorio de la División de Ciencia e Ingeniería de los Materiales), Universidad de Cantabria. E.T.S. de Ingenieros de Caminos, Canales y Puertos, Av. Los Castros 44, 39005 Santander, Spain ín a a a a I I ( r t ri l i isi i i I i rí l s t ri l s), i rsi t ri . . . . I i r s i s, l s rt s, . s str s , t r, i t t

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* Corresponding author. Tel.: +34-942-201705; fax: +34-942-201818. E-mail address: sergio.cicero@unican.es i t r. l.: - - ; f : - - . - il r ss: s r i . i r i . s rr s

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 23 European Conference on Fracture - ECF23 ls i r . . is is ss rti l r t - - li s ( tt :// r ti s. r /li s s/ - - / . /) r-r i r r i ilit f r f r r t r - - t rs. lis

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 the 23 European Conference on Fracture – ECF23 10.1016/j.prostr.2022.12.001