Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/102209
Title: | Analysis of fatigue crack propagation in laser sintering metal | Authors: | Borrego, L. F. P. Antunes, F. V. Ferreira, J. A. M. Costa, J. D. Capela, C. |
Keywords: | fatigue crack propagation; Laser sintering material; plastic CTOD | Issue Date: | 2017 | Project: | project number 016713 (PTDC/EMS-PRO/1356/2014) financed by Project 3599 Promover a Produção Científica e Desenvolvimento Tecnológico e a Constituição de Redes Temáticas (3599-PPCDT) and FEDER funds | Serial title, monograph or event: | Procedia Structural Integrity | Volume: | 5 | Abstract: | Laser sintering metal has recently been used in the manufacture of components for different applications like aerospace or medicine. The approach to engineering design based on the cracks propagation assumption applying the concepts of linear elastic fracture mechanics (LEFM) is commonly used for aerospace engineering. However, fatigue crack propagation is linked to irreversible and non-linear mechanisms at the crack tip, therefore LEFM parameters can be successfully replaced by non-linear crack parameters, namely the plastic CTOD. A model linking da/dN with plastic CTOD is proposed here to characterize fatigue crack propagation. A comparison is made with other materials showing that for the same plastic CTOD the laser sintering material has a relatively large crack growth rate. | URI: | https://hdl.handle.net/10316/102209 | ISSN: | 24523216 | DOI: | 10.1016/j.prostr.2017.07.123 | Rights: | openAccess |
Appears in Collections: | I&D CEMMPRE - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
1-s2.0-S2452321617302354-main.pdf | 565.52 kB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License