This inventor holds 2 USPTO granted patents. Top assignee: Government of the United States of America, as Represented by the Secretary of Commerce. Active years: 2001-2003.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Raleigh, NC (US) (2001)
- Belmont, MA (US) (2003)
Company Filing History:
Years Active: 2001-2003
Title: Christopher Hehman: Innovator in Ultrasonic Measurement Technologies
Introduction
Christopher Hehman is a notable inventor based in Belmont, MA (US). He has made significant contributions to the field of ultrasonic measurement technologies, particularly in the area of stress measurement in materials. With a total of 2 patents, Hehman has developed innovative methods that enhance the accuracy and efficiency of stress analysis.
Latest Patents
Hehman's latest patents include the "Ultrasonic strain gage using a motorized electromagnetic acoustic transducer." This invention presents a method and apparatus for measuring stress in a specimen utilizing a motorized electromagnetic acoustic transducer (EMAT). The technology leverages the rotation of pure-mode polarization directions of SH-waves, which results in a change in the phase of waves polarized along specific directions. The method employs a rotating small-aperture EMAT connected to a processor to measure phase and amplitude data as a function of angle. The EMAT is strategically placed on a workpiece at the location where stress is to be measured. The acoustic birefringence B is determined from the normalized difference of these phases. An algorithm calculates values of B and &PHgr; after the workpiece is stressed or its stress state is altered. The values are measured again at the same location, allowing for the determination of stress from the change in B and &PHgr;.
Career Highlights
Hehman is currently employed by the Government of the United States of America, as represented by the Secretary of Commerce. His work focuses on advancing measurement technologies that are crucial for various applications in engineering and materials science.
Collaborations
Hehman has collaborated with notable colleagues, including Alfred V. Clark and George A. Alers. These partnerships have contributed to the development and refinement of his innovative technologies.
Conclusion
Christopher Hehman is a distinguished inventor whose work in ultrasonic measurement technologies has made a significant impact in the field. His innovative patents reflect his commitment to advancing the science of stress measurement, showcasing his expertise and dedication to innovation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile