William M Visscher

Title: William M Visscher: Innovator in Resonant Ultrasound Spectroscopy

Introduction

William M Visscher is a notable inventor based in Los Alamos, NM (US). He has made significant contributions to the field of resonant ultrasound spectroscopy, with a focus on the grading of spherical objects and the analysis of high dissipation materials. His innovative approaches have led to the development of two patents that enhance the precision and efficiency of material characterization.

Latest Patents

William M Visscher holds two patents that showcase his expertise in resonant ultrasound spectroscopy. The first patent, titled "Sphericity determination using resonant ultrasound spectroscopy," presents a method for grading production quantities of spherical objects, such as roller balls for bearings. This method involves generating a resonant ultrasound spectrum for each spherical object and identifying a set of degenerate sphere-resonance frequencies. By determining the Poisson's ratio and the 'best' spherical diameter, the method provides a measure for accepting or rejecting the sphere based on asphericity values.

The second patent, "Resonant ultrasound spectrometer," describes an ultrasound resonant spectrometer designed to determine the resonant frequency spectrum of a rectangular parallelepiped sample of a high dissipation material. This spectrometer features a sample holder structure that grips the corners of the sample, allowing for sensitive detection of low amplitude resonance. The design effectively removes system resonant responses, enabling accurate calculations of the elastic constants of the sample.

Career Highlights

Throughout his career, William M Visscher has worked with esteemed organizations, including the United States of America as represented by the Department of Energy and the University of California. His work has significantly advanced the understanding and application of resonant ultrasound techniques in material science.

Collaborations

William has collaborated with notable colleagues such as Albert Migliori and Zachary Fisk. Their combined expertise has contributed to the development of innovative solutions in the field of ultrasound spectroscopy.

Conclusion

William M Visscher's contributions to resonant ultrasound spectroscopy have established him as a key figure in the field. His patents reflect a commitment to advancing material characterization techniques, making a lasting impact on the industry.