Tough Cortical Bone-Inspired Tubular Architected Cement-Based Material with Disorder.

ABSTRACT: Cortical bone is a tough biological material composed of tube-like osteons embedded in the organic matrix surrounded by weak interfaces known as cement lines. The cement lines provide a microstructurally preferable crack path, hence triggering in-plane crack deflection around osteons due to cement line-crack interaction. Inspired by this toughening mechanism and facilitated by a hybrid (3D-printing/casting) process, the study engineers architected tubular cement-based materials with the stepwise cracking toughening mechanism, that enables a non-brittle fracture. Using experimental and theoretical approaches, the study demonstrates the competition between tube size and shape on stress intensity factor from which engineering stepwise cracking can emerge. Two competing mechanisms, both positi

SUBMITTER: Gupta S 

PROVIDER: S-EPMC11681317 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature