Conference Paper

A Fast Method To Evaluate The Fatigue Resistance Of Additive Manufacturing Metal Specimens

September 2023

DOI:10.59499/EP235764573

Conference: Euro Powder Metallurgy 2023 Congress & Exhibition

Authors:

Polytechnic University of Catalonia

Eurecat

Daniel Casellas

Eurecat Centre Tecnològic de Catalunya

Eurecat

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This work addresses the application of such a newly established rapid fatigue testing method to evaluate the fatigue resistance of a Ti6Al4V alloy manufactured by Selective Laser Melting (SLM). The evaluation of fatigue resistance requires expensive and time-consuming tests, which often limit the generation of fatigue data. This is especially relevant for Additive Manufacturing (AM) parts, in which many processing parameters, and their inherent anisotropy, influence fatigue resistance. Accelerated or more straightforward testing procedures would help to develop fatigue-optimized AM parts. Recently, a method based on damage mechanics has been successfully applied to evaluate the fatigue limit in a wide range of steel and aluminum alloy sheets. It gives a good estimation of the fatigue limit in less than one day using a conventional universal testing machine and digital image correlation techniques. A good agreement with the results obtained by the conventional fatigue method is found.

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