|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Engineering Splat Based Features for Improved Damage Tolerance in Brittle Metamaterials
||Deepesh Yadav, Tanmayee More, B N Jaya
|On-Site Speaker (Planned)
The objective of this study is to improve damage tolerance in brittle materials inspired by defect features in thermal spray splats, to create low-density metamaterials. Globular and ellipsoidal features have been laser micro-machined in a brittle Poly(methyl methacrylate) polymer, with the objective to optimize the size, volume fraction, spacing, and arrangements of these features for best damage tolerance. Influence of single features size, spacing between two features (to understand interactions between features), and their primary unit cell architecture on the crack tip energy release rate have been determined by numerical simulations. Three-point bending experiment has been used to determine damage tolerance of full-fledge architecture in terms of work of fracture and GIC. Strain around the features has been determined by digital image correlation and correlated with the stress fields from the finite element model to understand interactions between the features in full fledge architectures.
||Mechanical Properties, Other, Other