Measurement of Shearing Resistance and Temperature Increase in Solids Subjected To High Rates of Def
Abstract
Pressure-Shear Plate Impact (PSPI) experiments are proposed to study the shearing resistance of polyurea at shear strain rates up to, 107 s-1. These high shearing rates ? approximately two orders of magnitude higher than reported previously ? will be obtained pri,marily by using micron-thickness samples made by vapor deposition polymerization. These high strain rates will be sustained for dur,ations of the order of a micro-second, resulting in large shear strains and pronounced heating of the samples. Temperature increases, will be monitored by means of new thermal sensors developed for the PSPI configuration. Interpretation of experimental results wil,l be carried out within an energetics/mechanics framework in which deformation and heating are considered simultaneously. A deep-le,arning approach will be used to extract accurate parameter values for models that are introduced. This approach will be examined fu,rther by applying it to the challenging problem of the cohesive strength ofbonds between co-polymers and metals.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Oct 06, 2022
- Source ID
- N000142212786
Entities
People
- Rodney Clifton
Organizations
- Brown University
- Office of Naval Research
- United States Navy