This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: USA as Represented by Secretary of the Navy. Active years: 1999-2002.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1999-2002
Title: The Innovative Contributions of Andrew B. Geltmacher
Introduction
Andrew B. Geltmacher is a notable inventor based in Alexandria, VA (US). He has made significant contributions to the field of material testing through his innovative designs. With a total of 2 patents, Geltmacher's work focuses on enhancing the understanding of multiaxial fracture mechanics.
Latest Patents
Geltmacher's latest patents include a design for a test specimen that incorporates multiple fracture sites and multiple strain state material fractures. This innovative material test specimen is aimed at determining critical strain and stress states for multiaxial fracture. The design's objective is to increase the amount of data obtained per specimen while maintaining simplicity in the testing procedure. By utilizing standard tension testing machines, the primary deformation of the specimen is generated. The specimen, in conjunction with analytical or computational simulation, employs nonuniform deformation fields produced by secondary and tertiary strain concentrations to generate and track these multiaxial strain states to fracture. Typically, the primary deformation involves uniaxial tension of a panel, while the secondary strain concentration is represented by a circular hole in the panel. Tertiary strain concentrations are areas of reduced thickness within the deformation field of the circular hole. This innovative design allows for multiaxial strain ratios from -0.50 to -0.10 and provides control over fracture initiation sites.
Career Highlights
Geltmacher works for the United States Navy, where he contributes his expertise in material testing and innovation. His role involves applying his patented designs to enhance the understanding of material behavior under various stress conditions.
Collaborations
Geltmacher collaborates with notable colleagues, including Virginia G. DeGiorgi and Peter Matic. Their combined efforts contribute to advancements in material testing and fracture mechanics.
Conclusion
Andrew B. Geltmacher's innovative work in material testing and his contributions to multiaxial fracture mechanics highlight his importance as an inventor. His patents reflect a commitment to advancing the field and improving testing methodologies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile