David S Leonard

Title: David S Leonard: Innovator in Ultrasonic Inspection Technologies

Introduction

David S Leonard is a notable inventor based in Southbury, Connecticut. He has made significant contributions to the field of ultrasonic inspection technologies, holding 2 patents that showcase his innovative approach to detecting flaws in various materials.

Latest Patents

One of his latest patents is titled "Signal processing of lamb wave data for pipe inspection." This invention relates to systems and methods for conducting an ultrasonic, nondestructive evaluation and inspection of a pipe using Lamb-type wave transducers. The goal is to detect the presence of defects, flaws, and discontinuities within the pipe. The transducers are strategically positioned within the interior space of the pipe, facing each other to direct the ultrasonic beam toward the other transducer and the section of the pipe being inspected. The coverage of the transducers is verified, and the results are processed using a combination of a cross-correlation filter and a signal processing tool.

Another significant patent by Leonard is the "Eddy current imaging system using spatial derivatives for flow detection." This system includes an eddy current sensing coil positioned near a workpiece to scan it and produce a signal indicative of the workpiece's integrity. The signal may represent a complex impedance signal that reflects the amplitude and/or phase of the signal. Two data processing techniques are disclosed to enhance the display of flaws in the workpiece. The first technique involves calculating a spatial derivative of the amplitude and/or phase indicative signal from the coil, producing a C scan of the spatial derivative. The second technique determines the regions of maximum ascent and/or descent of the signal, calculating an impedance plane trajectory from the data array of path points to display a reconstructed optimum signal independent of the path pattern.

Career Highlights

Throughout his career, David S Leonard has worked with several prominent companies, including Abb Amdata Inc. and Westinghouse Electric Company LLC. His experience in these organizations has contributed to his expertise in ultrasonic inspection technologies.

Collaborations

Leonard has collaborated with notable individuals in his field, including John P Lareau and Glenn G Hart, Jr. These collaborations have likely enriched his work and led to further advancements in his inventions.

Conclusion

David S Leonard is a distinguished inventor whose work in ultrasonic inspection technologies has led to significant advancements in the field. His patents reflect a commitment to innovation and the pursuit