|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Fracture Properties and Residual Stresses in Small Dimensions
||Extraordinary Stability of Clamped Beam Fracture Toughness Specimen: Stress Intensity Factor Solutions and New Insights on Possibilities at Small Dimensions
||Nagamani Jaya Balila, Vikram Jayaram
|On-Site Speaker (Planned)
||Nagamani Jaya Balila
Edge notched clamped beam bending has been established as a viable fracture toughness test specimen at small length scales. Finite element modeling of this test geometry shows regions of crack length to width ratio where stable crack growth can be maintained both in load and displacement control which opens up possibilities of R-curve measurements and fatigue crack growth studies. Stable crack growth will also be experimentally demonstrated in a range of brittle and quasi-brittle materials. Stability diagrams of clamped beam bending will be compared to other ASTM standard geometries like SENT and SENB. Analytical stress intensity factor solutions have been derived from numerical simulations for a range of specimen dimensions and crack lengths, which will be presented along with a discussion on the advantages and limitations of this geometry.