Patricia P Pulvirenti

Title: Patricia P. Pulvirenti and Magnetostrictive Materials

Introduction

Patricia P. Pulvirenti is an inventor associated with Chicago, Illinois. Her patent work concerns improving the performance of magnetostrictive materials under time-dependent magnetic fields. The available information identifies 1 patent associated with her.

Latest Patents

Pulvirenti is named on the patent “Magnetostrictive Materials and Method for Improving AC Characteristics in Same.” The invention describes Terfenol-D alloys modified with elements such as silicon or aluminum to improve their response to alternating magnetic fields.

The added elements create scattering sites for conduction electrons, increasing the material’s resistivity. The patent reports a 125% increase in resistivity, an average 80% increase in penetration depth at 1 kHz, and a 55% increase in energy-conversion efficiency. It also describes permeability that remains constant across a wider frequency range than in undoped Terfenol. The work further presents a magnetoelastic Grüneisen parameter as a way to characterize coupling efficiency in magnetostrictive materials.

Career Highlights

The patent lists the Iowa State University Research Foundation, Inc. as the assignee. Its subject matter reflects research into material composition and the electrical and magnetic properties that affect performance in practical applications.

Collaborations

David C. Jiles is identified as Pulvirenti’s coworker in connection with the patent. The invention’s technical description focuses on improving Terfenol-D’s alternating-current characteristics through material modification.

Conclusion

Patricia P. Pulvirenti’s patent addresses a specific challenge in magnetostrictive materials by describing how selected additives can improve frequency response, penetration depth, and energy-conversion efficiency.