%0 Journal Article 
%A Wendt, C.
%A Valerga Puerta, Ana Pilar
%A Droste, O.
%A Batista Ponce, Moisés
%A Marcos Bárcena, Mariano
%T FEM based evaluation of Fused Layer Modelling monolayers in tensile testing
%D 2017
%@ 2351-9789
%U http://hdl.handle.net/10498/36592
%X In a previous work, dumbbell specimens were shown to be inadequate for the tensile testing of Additive Manufacturing
monolayers. Finite Element Method (FEM) has been used in this contribution for comparing tensile-stress distributions in both
conventional and rectangular samples. Different extrusion paths for the manufacturing via Fused Layer Modelling (FLM) were
taken into account. The calculations showed stress concentrations in the dumbbell type specimens in the zone of variable width
away from the gauge length. The results were used for explaining the differences between mechanical behavior of dumbbell and
rectangular specimens made with FLM from Poly-Lactic Acid (PLA). The mechanical behavior in the experiments closely
matches the FEM results. At least 20 % of the tested dumbbell specimens fractured away from the gauge length, compromising
the resulting tensile strength data. Rectangular tensile test specimens are proposed as a better alternative.
%K Additive Manufacturing
%K Sample Geometry
%K Tensile Test
%K Finite Element Method
%K Stress Distribution
%~ Universidad de Cádiz