Abstract: A closed-loop machining system that includes a rotating spindle assembly having a body, a tool holder connected to the body, an ultrasonic machining module connected to the tool holder, and a power supply for powering the module; a processor for controlling the operation of the closed-loop machining system; a safety and compatibility bridge linking the ultrasonic machining module to the processor, wherein the safety and compatibility bridge further includes an electrical connection between the ultrasonic machining module and the processor; and at least one microprocessor located in or associated with the ultrasonic machining module for enabling and processing communication between the ultrasonic machining module and the processor.

Abstract: A method for characterizing a spot weld, including acquiring a sequence of A-scans from an ultrasonic phased array, wherein the A-scans describe individual portions of a field of view of the phased array; manually applying an interface gate and a flaw gate to each individual A-scan within the sequence of A-scans; calculating a gate ratio between a maximum amplitude under the interface gate and a maximum amplitude under the flaw gate for each individual A-scan; plotting the gate ratio for each individual A-scan as a function of location within the phased array field of view to generate a weld fusion map; using a predetermined threshold to differentiate fused locations from unfused locations on the weld fusion map; and calculating predetermined weld metrics, wherein the predetermined weld metrics include area, diameter, width, length, percent fused, or combinations thereof.

Abstract: An automated system for non-destructively evaluating spot welds that includes at least one matrix phased array probe; a fixture adapted to be mounted on a robot or other mechanical actuator, wherein the fixture is further adapted to retain the at least one matrix phased array probe; and an enclosure that includes at least one input for connecting to the at least one matrix phased array probe, ultrasonic phased array transmitting and receiving circuitry in electrical communication with the at least one input, at least one data processor running software that includes at least one algorithm for processing data received from the probe and generating discrete specifications of evaluated welds, wherein the discrete specifications further include pass indications or fail indications regarding weld acceptability; and at least one output for outputting the discrete specifications of evaluated welds.

Abstract: An ultrasonic machining module that includes an ultrasonic transducer, wherein the ultrasonic transducer is adapted to receive a machining tool and a vibration-isolating housing adapted to be both compatible with a machining system and to receive the ultrasonic transducer therein, wherein the housing further includes at least one modification for isolating all vibrations generated by the ultrasonic transducer when the device is in operation except axial vibrations transmitted to the machining tool, thereby preventing unwanted vibrations from traveling backward or upward into the machining system.

Abstract: A method and apparatus for detecting pipe penetration by the bore head of horizontal boring machine utilizes acoustic and seismic sensors. A sensitive acoustic microphone is placed in the bottom of the nearest sewer manhole to the location of the bore head to detect acoustic signals transmitted through the ground by the bore head for producing a first output signal. A seismic pickup device is placed in the vicinity of the bore head to detect vibrations of the ground caused by the bore head, as it moves through the ground, to produce a second output signal. These first and second signals produced, respectively, by the microphone and the seismic pick-up device, then are supplied to a two-channel strip chart recorder, which provides an output indicia permitting simultaneous comparison of the two signals. Particular patterns of these detected signals are indicative of the penetration of a sewer pipe.