Validation of Ablative Material Response Model Using Charring Ablator Response Program
In this study, a model of material ablative response is developed using the CHarring Ablator Response (CHAR) code. The model calculates surface recession rate and surface and in-depth temperatures of the sample and is validated utilizing experimental data collected for the material PICA, a phenolic impregnated carbon fiber preform. Previous work done using other material response and equilibrium thermochemistry codes is used in development of this model. Experimental data is collected utilizing an in-situ ablation sensor consisting of four thermocouples inserted at graduated depths into the back face of the sample, which is exposed to an oxyacetylene torch flame at a heat flux of 1000 W/cm2 for 30 seconds. Internal and surface temperature histories and surface recession are tracked utilizing thermocouple data and an array of video data from an IR pyrometer and HD camera.
Author: Jon Langston
Conference: SAMPE Seattle 2017