David A Chizmar

Title: **David A. Chizmar: Innovator and Inventor in Stress Mapping Technology**

Introduction

David A. Chizmar, an accomplished inventor based in Washington Township, Westmoreland County, Pennsylvania, has made significant contributions to the field of engineering with a total of six patents to his name. His innovative approaches address critical challenges in industrial applications, showcasing his expertise and dedication to improving technological processes.

Latest Patents

Among his noteworthy inventions, two patents stand out for their unique contributions to the industrial sector. The first is a **System and Method for Mapping Residual Surface Stresses in a Valve Ring**. This inventive system includes an eddy current probe designed to map the magnitude of residual compressive stresses on the surface of ferromagnetic components like valve rings used in refrigeration compressors. It employs a detection coil that generates a fluctuating electromagnetic field, allowing for precise measurement of stresses as the component is rotated on a turntable. A microprocessor then converts impedance changes detected by the probe into detailed maps of the residual stresses.

The second patent, the **Tube Plug Inspection System**, revolutionizes the inspection process of tube plugs through an advanced probe assembly. This system utilizes a rotatable and translatable probe carrier housing, enabling efficient inspection of the interior of tube plugs, particularly those containing expander elements. The design includes a flexible hose connected to a probe driver assembly, facilitating a helical scanning pattern that enhances the inspection efficiency.

Career Highlights

David has an impressive professional background that includes key positions at renowned companies such as Westinghouse Electric Corporation and Thermo King Corporation. His engineering experience in these prestigious organizations has played a crucial role in shaping his inventive concepts and methodologies.

Collaborations

Chizmar has collaborated with distinguished professionals throughout his career, including peers like Lee W. Burtner and Warren R. Junker. These collaborations have led to the exchange of innovative ideas and techniques, ultimately enriching his contributions to the field of engineering.

Conclusion

David A. Chizmar stands out as an inventive force in the realm of industrial technology. His significant patents, combined with a strong career and valuable collaborations, underscore his commitment to advancing engineering practices. His work in stress mapping and inspection systems continues to impact various sectors, paving the way for future innovations.