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Holographic Measurement Of Elastic Moduli

Schmitt, D. R. and Smither, C. L. and Ahrens, T. J. and Jensen, B. L. (1986) Holographic Measurement Of Elastic Moduli. In: 27th U.S. Symposium on Rock Mechanics (USRMS). American Rock Mechanics Association , University of Alabama.

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The in situ elastic moduli of rock are measured holographically by a borehole instrument in marble and oil shale. A point force induced displacement field is recorded with double exposure holography. Data consists of a fringe pattern on the viewed hologram. The elastic moduli are determined by modeling of the fringe pattern. Only Young's modulus is fairly constrained by the present data reduction. For an applied force of 520 ± 50 Newtons, a marble was found to have a Young's modulus of 56 ± 8 GPa, near an ultrasonically determined value of 48 ± 6 GPa. In an oil shale, an applied force of 295 ± 10 Newtons indicates a Young's modulus of 25 ± 1GPa.

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Additional Information:© 1986 American Rock Mechanics Association. Contribution No. 4321, Division of Geological and Planetary Sciences, California Institute of Technology. We are grateful for the support from the Department of Energy, Schlumberger Technical Corporation, Sun Oil Company, Union Oil Company, and the California Portland Cement Co. We greatly appreciate the assistance of J. Smith, T. Nolan, .J. Lutey, R. Lange, T. Gunn, A. Salter, J. Rains, and D. Hendrickson.
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Department of Energy (DOE)UNSPECIFIED
Schlumberger Technical CorporationUNSPECIFIED
Union Oil CompanyUNSPECIFIED
California Portland Cement CoUNSPECIFIED
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Record Number:CaltechAUTHORS:20150217-090705062
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Official Citation:Schmitt, D. R., Smither, C. L., Ahrens, T. J., & Jensen, B. L. (1986, January 1). Holographic Measurement Of Elastic Moduli. American Rock Mechanics Association.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:54857
Deposited By: Ruth Sustaita
Deposited On:17 Feb 2015 18:00
Last Modified:03 Oct 2019 08:01

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