© 2020 by Stress Photonics Inc.

Our Company

Stress Photonics uses Photoelastic, Thermoelastic and Thermal NDE methods to complete a full line of full-field stress and strain measurement instruments.

Jon Lesniak, Co-founder, Board Director, President and CEO


Mr. Lesniak received his Masters Degree from University of Wisconsin in 1991. At the University of Wisconsin, Jon was awarded the Kurt F. Wendt Memorial Scholarship for outstanding performance as an engineering student. At Stress Photonics, he has been the lead product developer with eleven (11) patents to his credit in the areas of thermal and optical methods. He served as principal investigator for many contracts responsible for spawning commercial test instruments including the DeltaTherm Stress Measurement System (NASA 1991-94, US Air Force 1993-1997 ) and the Grey-Field Polariscope Strain Measurement System (NASA 1997-99). Jon has completed contracts with the US Federal Highway Administration to develop thermal methods for the inspection of bridges and has lead successfull partnerships with NASA to inspect the windshields of the space shuttle fleet. Mr. Lesniak has presented many papers to technical societies in the areas of photoelasticity, thermoelasticity, and thermal methods.

Brad Boyce, Board Director


Mr. Boyce attended the University of Wisconsin and completed a masters in Engineering Mechanics in 1978. His studies were concentrated on fatigue life prediction, experimental mechanics, and engineering instrumentation. After graduation he joined John Deere Horicon Works in Horicon, Wisconsin as a Test Engineer. His responsibilities there included the installation and implementation of new technologies to aid in product design and development. In the mid-1980’s he developed instrumentation and software for thermoelastic stress analysis that was later to become one of the building blocks of Stress Photonics. Mr. Boyce joined Stress Photonics in 1990. His primary responsibilities include many of the system and software aspects of the products. Mr. Boyce has been active in the Society for Experimental Mechanics since 1973. He has served as local section chairman, chairman of the Thermal Methods division, twice as a conference chairman, and as a member of the board of directors of SEM. In 2000 SEM recognized Brad with the Brewer Award for outstanding practicing engineer. Over his engineering career Mr. Boyce has authored and co-authored a broad range of technical papers on topics in engineering measurement and instrumentation.