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Fatigue behavior of additive manufacturing parts. A preliminary analysis

Lookup NU author(s): Dr Javier Munguia Valenzuela, Professor Kenneth Dalgarno

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Abstract

The fatigue behavior of Additive Manufacturing (AM) parts has been scarcely studied in previous years. There have been recent attempts to characterize basic fatigue behavior especially of laser sintered parts, however the different mechanisms of fatigue and the influence of various parameters such as frequency, temperature, specimen design and rig configuration, have not been discussed for AM. As the mechanical properties of polymer based AM materials are key for their effective use, one factor that prevents their widespread application for final products is this lack of long term fatigue information. This work presents the preliminary results of a series of tests aimed at two different additive manufacturing processes: Fused Deposition Modeling (FDM) and Selective Laser Sintering (SLS). Advances in the design of purpose built rigs for different forms of fatigue testing are described along with issues encountered within different processes such as scan spacing effects, internal hatching strategies or surface roughness. Studied methods include: tension/compression testing on servo-hydraulic equipment, cyclic bending fatigue and Wohler-like fatigue, both being developed as purpose built fatigue rigs.


Publication metadata

Author(s): Munguia J, Dalgarno KW, Reid R

Editor(s): Bartolo, P.J., DeLemos, A.C.S., Tojeira, A.P.O., Pereira, A.M.H., Mateus, A.J., Mendes, A.L.A., DosSantos, C., Freitas, D.M.F., Bartolo, H.M., Almeida, H.D., DosReis I.M., Dias, J.R., Domingos, M.A.N., Alves, N.M.F., Pereira, R.F.B., Patricio, T.M.F., Ferreira, T.M.D.

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 5th International Conference on Advanced Research and Rapid Prototyping

Year of Conference: 2012

Pages: 347-354

Publisher: CRC Press

Library holdings: Search Newcastle University Library for this item

Series Title: Innovative Developments on Virtual and Physical Prototyping

ISBN: 9780203181416


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