Fracture of 3D printed brittle open-cell structures under compression

Conference Dates

November 10-14, 2019


We investigated the fracture behavior under compression of well-arranged cubic and tetragonal open-cell structured and notched specimens, all made of brittle plastic and fabricated by 3D printing. The basic material properties were studied by using bulk plastic specimens, the basic properties of cellular-structured specimens by cubic and tetragonal specimens under compression. Notched strip-like specimens were subjected to compressive displacement aimed to study the fracture behavior. The notched specimens were loaded until the columns adjacent to the notch tip collapsed stably by buckling mechanisms, followed by a rapid and unstable sequential collapse mechanisms of the specimens’ columns to a point of failure and load drop. The well-arranged open-cell structured specimens enabled an adequate repeatability of the mechanical properties for valuable analyses and conclusions.

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