Thermophysical Property Determinations Using Transient Techniques.
Abstract
This program has as its objectives the measurement of the thermophysical properties of energetic materials (AP, HMX, and RDX) and of carbon/carbon materials. The specific heat of ammonium perchlorate up to the beginning of decomposition has been measured with a differential scanning calorimeter. The theory for the ramp heating of a sample with a heat pulse input for determining diffusivity and the heat conduction theory for strip heating have been investigated. Software has been written to accommodate ramp heating at rates up to 30 deg.C per second using the pulse heating method for measuring diffusivity. Thermal diffusivity and specific heat measurements have been made on coarse weave carbon/carbon materials. The heat flow through both the individual fibers and the matrix material have been investigated using the flash diffusivity technique, for the purpose of verifying the applicability of the concept of diffusivity to this type of composite material. This work has indicated that an off-axis measurement procedure could be developed which uniquely defines the heat conduction in the various fiber directions for fiber composite material. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1982
- Accession Number
- ADA115356
Entities
People
- L. Koshigoe
- R. E. Taylor
- R. L. Shoemaker
Organizations
- Purdue University