Influence of structure-determining parameters on the mechanical properties and damage behavior of electron beam melted lattice structures under quasi-static and fatigue compression loading

• DOI: 10.1016/j.matlet.2021.129380
• Publication Date: 2021-01-21T22:55:27Z
• Authors: W. Radlof; C. Polley; H. Seitz; M. Sander
• Keywords: Damage tolerance

The topology-property relationship of porous structures, especially tested under quasi-static and cyclic loadings, is an essential factor for the design safe application structures in medical context. Within scope this paper, mechanical properties damage behavior additively manufactured were investigated fatigue compression tests taking different designs with cubic unit cells into account. influence structure-determining parameters on highlighted. For example, analytically described as a function porosity strut thickness. A global layer-by-layer was observed both lading. Moreover, ductile local identified using digital image correlation technique micro computed tomography. Under loading mostly fail high cycle regime at stress levels above their compressive offset stresses, which relevant damage-tolerant design.