Estudio experimental y numérico de la influencia de los parámetros de fabricación sobre el comportamiento de las capas intermedias de los materiales de impresión 3D con y sin fibras de refuerzo

Abstract

This work carries out an in-depth analysis of the influence of

the manufacturing parameters on the behavior of a material

with better mechanical properties than the usual ones, PLA and

ABS, such as PETG (Polyethylene terephthalate with glycol),

and the carbon fiber reinforced version. This study performs the

experi-mental characterization on interlaminar fracture of this

material, with the aim of acquiring a better knowledge of it,

but also generates a model of material behavior that takes into

account the effects on the properties of the printing profile,

in other words, of the selected manufacturing parameters. In

order to achieve such objective, a finite element numerical

model has been developed, using cohesive elements to

simulate the contact zones between layers. Also, failure and

degradation modes of the material would be enclosed in the

model behavior. A bilinear behavior model is used to simulate

the response of the interlaminar zones. The properties of the

model, as well as its subsequent adjustment, are supported

from the results obtained in the experimental phase. As a final

result of the work, the authors propose a series of graphs that

allow the selection of these properties to be used in the model,

depending on the manufacturing parameters selected for a

future application.