STATISTICAL ANALYSIS OF CHAOTIC RESPONSE SIGNALS FOR TUBULARS

A crack detecting system includes a tool movable along a conduit or structure and having at least one sensing device for sensing cracks in a wall of the conduit or structure. The system includes an exciter that excites the structure chaotically. The sensing device senses the material response from the exciter. A processor is operable to process response signals of the at least one sensing device. The processor analyzes the sensed response signals employing at least one methodology, wherein the at least one methodology includes a classical statistical methodology selected from the group consisting of standard deviation, skew, and kurtosis to detect cracks at wall of the conduit or structure.