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Design implications and opportunities of considering fatigue strength, manufacturing variations and predictive lcc in welds
KTH Royal Institute of Technology, Sweden.ORCID iD: 0000-0001-6729-8604
Cargotec Sweden AB, Sweden; KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
2021 (English)In: Metals, ISSN 2075-4701, Vol. 11, no 10, article id 1527Article in journal (Refereed) Published
Abstract [en]

Fatigue strength dictates life and cost of welded structures and is often a direct result of initial manufacturing variations and defects. This paper addresses this coupling through proposing and applying the methodology of predictive life-cycle costing (PLCC) to evaluate a welded structure exhibiting manufacturing-induced variations in penetration depth. It is found that if a full-width crack is a fact, a 50% thicker design can result in life-cycle cost reductions of 60% due to reduced repair costs. The paper demonstrates the importance of incorporating manufacturing variations in an early design stage to ensure an overall minimized life-cycle cost. © 2021 by the authors. 

Place, publisher, year, edition, pages
MDPI , 2021. Vol. 11, no 10, article id 1527
Keywords [en]
Fatigue assessment, Life-cycle costing, Manufacturing variations, Welding, Welding defects
National Category
Manufacturing, Surface and Joining Technology
Identifiers
URN: urn:nbn:se:ri:diva-57384DOI: 10.3390/met11101527Scopus ID: 2-s2.0-85115793100OAI: oai:DiVA.org:ri-57384DiVA, id: diva2:1622561
Note

 Funding details: 2016-03363, 2016-05195; Funding text 1: This work was supported by the Centre for ECO2 Vehicle Design, funded by the Swedish Innovation Agency Vinnova (Grant Number 2016-05195) and the project VariLight, funded by the Swedish Innovation Agency Vinnova through Grant Number 2016-03363.

Available from: 2021-12-22 Created: 2021-12-22 Last updated: 2021-12-29Bibliographically approved

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Karlsson Hagnell, Mathilda

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