Armament and Military Equipment Polymer Composite Ageing

Abstract

In the process of planning military operations, it is necessary to know technical and combat readiness of vehicles. Knowledge of the pass mode potential of individual vehicles is very important while organizing transport operations. So far, in a situation where the elements determining the suitability of a vehicle were made of metal, such potential has been estimated on the basis of the difference between the service life of a vehicle and meter readings. The following study demonstrates the inappropriateness of such an approach in relation to elements made of polymers. A simplified way of assessing loss of the pass mode potential (based on measurements of the labor symptoms) has been presented based on an example of a rubber and metal joint of a caterpillar. It was found that during 8 years the storage of these elements, their utility potential loss is up to 40% of the initial potential.

The Effect of Accelerated Aging Conditions on the Properties of Rigid Polyurethane-Polyisocyanurate Foams Modified by Cinnamon Extract

“…The critical level is defined as the determined absolute value of the measured quantity or the percentage change of this value in relation to its initial value. The aging time is also taken into account [16].…”