Abstract: An apparatus for measuring forces across a flexible member is provided comprising a non-extensible element suspended between a pair of supports. The non-extensible element is operably coupled to a flexible member for translating forces applied to the non-extensible element to the flexible member. A pair of equally massed weight dishes are suspended from said non-extensible element on opposite sides of the flexible member. By incrementally adding weights to one of the weight dishes, the flexible member is incrementally displaced. An Eddy Current System operably communicates with the flexible member for detecting the displacement. The displacement and load are used to calibrate a stress-strain curve of the flexible member.

Abstract: A non-destructive test system that displays time domain amplitude returns from multi-frequency, multi-phase, constant magnitude RF signals, that are reflected by differences in characteristic impedance of a wire over ground plane transmission line. The reflections are used to detect RF discontinuities or faults in conductive areas that form the ground plane which preferably are resolved using a generalized pencil-of-points algorithm. The nondestructive testing system so constructed is especially useful in testing field repairs of radar absorbing material (RAM) and other features of a conductive object or vehicle whose radar return is to be minimized.