from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. exhibiting birefringence when stressed
- adj. of, or relating to photoelasticity
Sorry, no etymologies found.
Gerber's paper on luminescent photoelastic coating detailed his research experiments with Paul Hubner, assistant professor of aerospace engineering and mechanics.
And that's where the trouble begins, as Professor Rosakis learned from his experiments with 5mm thick transparent blocks of photoelastic polymer with a hairline fracture in each of them (pictured below right) containing a thin exploding wire that is transformed into plasma once triggered, thus simulating the San Andreas fault, i.e., a strike-slip (right-lateral) fault, during an Earthquake.
Gerber, a junior in mechanical engineering, works as an undergraduate research assistant to Dr. Paul Hubner, assistant professor of aerospace engineering and mechanics, and focuses his research on using luminescent photoelastic coatings, a new experimental method for stress analysis, to advance coating calibration and performance.
The argument, essentially, is this: Birefringence arises because the molecular chains in the photoelastic polymer get stretched.
The best materials I have come across are photoelastic coating sheets from Vishay, as described and evaluated in this recent publication:
The high-force moves of a snake pushing off the ground are visible as a snake moves on a photoelastic gel.
The researchers also placed moving snakes on a photoelastic gelatin that lights up when force is applied.