Abstract
Optical holography technique is developed to measure static Young's modulus from boreholes. In experiment, known point force induces micron scale displacements on borehole wall recorded by double-exposure hologram. Raw data is modeled to find E(Young's modulus) directly within 10% for rock and metal samples used. Field tests are performed in horizontal mine pillar borehole.--Modified journal abstract.
This content is PDF only. Please click on the PDF icon to access.
You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
