Abstract: This invention relates to an improved termination connection for advanced fiber composite cables of the type comprised of fibers fixed in a matrix binder. In particular, the composite cable is provided with one or more ribs of tension wound binder impregnated fiber cured on the end portion thereof. Potting material is secured over the ribs at the end of the cable preferably having a parabolically curved outwardly tapered contour to distribute the longitudinal and transverse forces over the fibers in the cable.

Abstract: A method of coating testing comprises applying a consistantly perpendicular minimum tension force to a dolly for testing to see if the adhesive bond strength between a coating and a substrate meets a minimum specification for such bond. The tester comprises a ram passing through an axially centered opening in a dolly bonded to the coating. A piston and cylinder are associated with the ram and the dolly so that pressure within the piston chamber formed thereby causes the development of a tension force within the dolly which is perpendicular to the coating being tested because of the coaxially centered orientation of the dolly with respect to the ram. The pressure is increased only to a point wherein the tension force is equal to a minimum specification for bonding adhesion. If the coating has not separated from the substrate, the bond therebetween meets the specification. The testing apparatus may then be removed by causing the bonding agent attaching the dolly to the coating to fail as by heating.

Abstract: An apparatus for applying a consistently perpendicular tension force to a dolly is provided for testing of the adhesive bond strength between a coating and a substrate. The tester comprises a ram passing through an axially centered opening in a dolly bonded to the coating. Piston and cylinder means are associated with the ram and the dolly so that pressure within the piston chamber formed thereby causes the development of a tension force within the dolly which is perpendicular to the coating being tested because of its coaxially centered orientation with respect to the ram.

Abstract: Early detection of cracks in structural members subject to stress is accomplished before cracks traverse the member by(a) affixing multiple liquid impermeable enclosures to the material to be monitored such that a crack forming in the monitored material will provide passage for liquid to enter the enclosures either through the monitored materials or by destroying the integrity of said liquid impermeable enclosures;(b) sealing a resistor having a known value onto each of the enclosures, each of the resistors having one lead capable of liquid contact within the enclosure, said lead electrically isolated from the material being monitored and/or a second wire in the enclosures;(c) forming a circuit connecting the multiple enclosures wherein the opposite resistor leads in each enclosure are connected by insulated wire to means for measuring resistance and/or conductance wherein each resistor alone or together with any combination of other resistors in said enclosures within the circuit provides a unique total resi