Nonlinear Solid Mechanics

MessPhysick Laser Speckle Extesometer

Messphysick Laser Speckle Extensometer

Non-contact extension measuring system

Laser beam dispersion causes granular looking speckle pattern, that changes during loading

Video processor compares with initial pattern and calculates moved distance

Strain calculated in real-time


Picture


Keywords:

Extensometer, non-contact, strain, real-time


Measurements:

(True) strain

Transverse strain


Specifications:

Working distance g: 180 – 630 mm

Optical magnification: 0.5 (g = 630 mm) – 2.4 (g = 180 mm)

Gauge length range: 1.5 – 230 mm

Sensitivity: 0.05 K at 30 °C


Equipment:

Motorized sensor head

Power supply

DAC

PC- system with extra USB ports


Publications:



Location:

Westhorst WH125


Research group:

Nonlinear Solid Mechanics


Contact:

Herman van Corbach