High levels of stiffness, strength, and lightweight can be achieved through lattice structures. Many different technologies can be adopted for their construction; among them, additive manufacturing presents high flexibility and the capacity to produce complex shape parts. In this paper, a detailed analysis of the fracture surface was carried out on titanium sandwich panels, having a lattice core and produced through electron beam melting (EBM) process. The specimens were subjected to the three-point bending test; then, the fracture surfaces were observed by means of a scanning electron microscope (SEM). The occurrence of dimples was found on the fracture surface, demonstrating the ductile behavior of the material; moreover, the micrographies showed a different morphology between the core of the struts and the surface.
Damage analysis of Ti6Al4V lattice structures manufactured by electron beam melting process subjected to bending load
Bellini C.
;Di Cocco V.;Franchitti S.;Iacoviello F.;Sorrentino L.
2021-01-01
Abstract
High levels of stiffness, strength, and lightweight can be achieved through lattice structures. Many different technologies can be adopted for their construction; among them, additive manufacturing presents high flexibility and the capacity to produce complex shape parts. In this paper, a detailed analysis of the fracture surface was carried out on titanium sandwich panels, having a lattice core and produced through electron beam melting (EBM) process. The specimens were subjected to the three-point bending test; then, the fracture surfaces were observed by means of a scanning electron microscope (SEM). The occurrence of dimples was found on the fracture surface, demonstrating the ductile behavior of the material; moreover, the micrographies showed a different morphology between the core of the struts and the surface.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
