Optical Laboratory

1
NDT/NDE by Digital Shearography
Dr. Lianxiang Yang,Associate Professor.Praveen R
Samala,Doctoral CandidateSheng Liu, Doctoral
CandidateOptical Laboratory,Oakland
University,Rochester,MI.(Emailyang2_at_oakland.edu
Ph(248)370-2283)

• Principle and Applications
• Shearography is a laser technique which directly
  measures strain information.
• It is insensitive to environmental disturbances
  and can be used for online inspection.
• Thermal Strain Measurement in Real-Time .
• Non Destructive Evaluation of Aerospace and
  Automobile Composites.
• Non-Destructive Evaluation of Spot Welds.

Research Results
Thermal Strain Measurement
Spot Weld Analysis
Composite on Sheet Metal
Nugget of Spot Weld
Measured size
Strain Measurement
Delamination in GFRP-Honey Comb Panel
Delamination and Micro-Cracks in a Glass Fiber
Reinforced Plastic Rotor Vane
With a internal pressure of 0.01 MPa
Delamination in an Aero-space Component