Bone-inspired microarchitectures achieve enhanced fatigue life.

ABSTRACT: Microarchitectured materials achieve superior mechanical properties through geometry rather than composition. Although ultralightweight microarchitectured materials can have high stiffness and strength, application to durable devices will require sufficient service life under cyclic loading. Naturally occurring materials provide useful models for high-performance materials. Here, we show that in cancellous bone, a naturally occurring lightweight microarchitectured material, resistance to fatigue failure is sensitive to a microarchitectural trait that has negligible effects on stiffness and strength-the proportion of material oriented transverse to applied loads. Using models generated with additive manufacturing, we show that small increases in the thickness of elements oriented transverse

SUBMITTER: Torres AM 

PROVIDER: S-EPMC6900498 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature