With traditional photoelasticity, an engineer had to deal with the tedium of both coating applications and fringe counting. With the Grey Field Polariscope, Photoelastic Stress Analysis (PSA) is now fully automatic. After you paint, just aim the polariscope at your component or specimen and “shoot.” The image of the high strain or stress area is displayed digitally on the system’s computer. The GFP system interpolates the data and outputs an image showing the maximum inplane shear and the direction of the first principal strain.

Key Points about Photoelasticity

• Full-field
• Thin plastic coating
• In-plane shear strains
• Directions of principal strains
• Simple static loads including assembly stresses
• Should view normal to surface
• Can measure residual stress in glass and plastic

Key Features of GFP Systems

• Automated full-field strain measurement
• Compatible with all coatings
• Thickness measurement via tinted coatings
• 20 microstrain resolution typical
• Sub-fringe or multi-fringe
• Simple static loading
• Traceable system calibration
• No fringes to analyze
• Automatic measurement of coating thickness
• Fully computerized digital system
• Thin easier to apply coatings

Visit GlassPhotonics.com to learn more!

Technical specifications for our wide range of glass inspection tools vary depending on the system. We’ve developed an entire website dedicated to glass inspection tools and technology by Stress Photonics. Visit GlassPhotonics.com to learn more!