CALCULATION OF MOISTURE EXPANSION COEFFICIENT OF THE ABOVE KNEE PROSTHETIC SOCKET LAMINATION MATERIALS

Abstract

The aim of this study is to calculate the moisture expansion coefficient of the above knee prosthetic socket lamination. Six laminations composite materials were used in manufacturing above knee prosthetic socket using a vacuum device. The reinforced materials of these laminations were Perlon, Fiberglass, and Nanocarbon powder, while the matrix material was Polyurethane resin. The experimental work included moisture absorption test to determine the time of absorption, and calculating percent moisture content and moisture expansion coefficient for these laminations. The humidity used in this study were (51, 75, 80, and 100 %).The results indicated that, lamination (2perlon+2fiberglass+2perlon) has the highest value of moisture expansion coefficient at , while lamination (5perlon+2fiberglass+5perlon) has the lowest vaule of moisture expansion coefficient at .