Video/Optical Extensometer

Provide a non-contact, video/optical-based extensometry system designed to perform high-resolution, non-contacting axial strain and displacement measurements. The system shall be suitable for testing high-modulus materials, high-elongation materials, thin or delicate specimens, or for strain-controlled testing. The system shall include the following features and/or minimum performance criteria

•     Field of View of at least 125mm

•     Capable of measuring at least 100% strain for an initial gauge length of 50mm

•     Accuracy ≤ 0.5% of elongation values up to 6mm, and ≤ 30 µm for any elongations over 6 mm

•     Resolution ≤ 0.5 µm

•     Stand-alone system with no PC software interaction required

•     Factory calibrated system that does not require calibration for each setup

•     No post-processing of imaging data required

•     Optics system that accounts for out-of-plane motion by using telecentricity

•     Illumination system requiring no additional external lighting

•     Laser alignment system for instrument alignment to specimen loading axis and calibrated working distance

•     Mounting hardware for Instron electromechanical test frames that includes rotational and translational adjustment for alignment to specimen loading axis and translational adjustment to calibrated working distance

•     Real-time output of engineering data scaled to high level (≥ 16 bit) analog output of +/- 10 VDC at rates ≥ 100 Hz

•     Adapter to connect and read output into Instron electromechanical test frames

•     Adapter to connect and read output into ADMET electromechanical test frames

•     Adapter to read output into generic voltage analog input devices and custom configurations

•     Continuous real-time output with no trigger required

•     Instrument user interface to control imaging parameters, output data filtering, units of measure for engineering data output, and output scaling parameters

•     Real-time live display reading of engineering data

•     If specimen markings are required, then a specimen marking kit with templates ranging from 10 to 50mm must be included

•     Destination Shipping

Please send any questions or quotes to Susan Davis, susan.a.davis@usda.gov