Paper number 968

PECULIARITIES OF THERMAL MEASUREMENTS UNDER QUASI-ADIABATIC LOADING OF ARAMID - PLASTIC SHELLS

M. Kamensky, V. Pudnik

Institute of Polymer Mechanics of Latvian University, 23 Aizkraukles, LV-1006 Riga, Latvia

Summary

Results of investigations of heat emission/absorption processes in aramid-plastic shells made by a helical-circumferential winding subjected by internal hydrostatic pressure are presented in the report. The temperature change in the liquid during pressure increase and construction features of a thermal-receiver due to insufficient thermal stabilization of cool soldering, were studied. Problems of heat conductivity for thermal receiver, accounting for its weak thermal stabilization, and for a shell wall, influence of liquid heating under pressure, were solved. Thermal kinetic curves corresponding to polymeric shell at its deformation were obtained on the base of solutions of heat conductivity problems. The dependencies obtained were analyzed from viewpoint of physical processes accompanying a deforming of shells. An endothermic process is observed in the elastic area of shell deforming. This result is confirmed by theoretical calculation of heat effect for the shells considered. The results agree with experimental data obtained by acoustic method.

Keywords

non-destructive method, aramid-plastic, shell, heat, temperature, pressure, heat conductivity.