Further to industry applications, Dan has vast experience with physical testing. Here, he considers how to predict the material behaviour of complex 3D printed lattices. The in-depth study required use of detailed finite element analysis to simulate the lattices, CT Scanning to see the minute surface features of the lattices, and a universal testing machine to ascertain tensile and compressive behaviours.
Clockwise from top left: automotive suspension member, spinal implant, hip implant, tibular implant, radial lattice gear, aircraft cabin partition. Image credit: Autodesk et. alThis study describes a method for predicting the bulk properties of lattice types with respect to the member thickness. Read it here.
Top: magnified image of a fractured 1mm lattice memberBottom: simulated fracture based on CT geometry