Laser-Induced-Fluorescence Inspection of Polyurethane and Related Materials. Phase 1.

摘要

Laser-induced fluorescence has been used as the basis for a new nondestructive-inspection technique. A strong correlation between laser-induced-fluorescence intensity and tensile strength of several polyurethane-based systems has been demonstrated. Various parameters, such as excitation and detection wavelengths, have been experimentally investigated. Successful laboratory experiments employing fiber-optic bundles indicate that practical implementation of this method is possible. A portable instrument to determine the physical condition of fabric-reinforced polyurethane fuel tanks used by the U.S. Army is one immediate application, but the method may also be applicable for use on other elastomeric materials. (AW)