An investigation of the influence of grain size on stress wave attenuation and dispersion in rock like materials

Author

Narendra Y. B. Choudary

Abstract

"A mathematical model which is independent of any specific physical mechanism and based on two port linear network theory is developed to describe attenuation and dispersion in a medium. The assumption is made that the ll medium behaves in a linear manner. The influence of grain size on attenuation and dispersion is investigated and the effect of aggregate to matrix ratio also is considered. Theoretical equations adopted from related research are utilized to predict the dispersion curve from calculated attenuation parameters.

Results show that the linear assumption made for the medium is valid for the specimens tested. The attenuation parameters increased with an increase in grain size. The predicted dispersion data obtained utilizing the calculated attenuation parameters show good correlation with the corresponding values determined experimentally. With a known pulse from a given location, the change in the pulse shape along the bar at different stations is predicted utilizing the known calculated attenuation parameters and predicted dispersion data. Predicted and experimentally obtained strain-time curves at different stations along the bar show good correlation"--Abstract, page ii.

Advisor(s)

Rupert, Gerald B., 1930-2016

Committee Member(s)

Haas, Charles J.
Clark, George Bromley, 1912-
Avula, Xavier J. R.
Foster, J. Earl

Department(s)

Mining Engineering

Degree Name

Ph. D. in Mining Engineering

Publisher

University of Missouri--Rolla

Publication Date

1973

Pagination

x, 106 pages

Note about bibliography

Includes bibliographical references (pages 84-86).

Rights

© 1973 Narendra Y. B. Choudary, All rights reserved.

Document Type

Dissertation - Restricted Access

File Type

text

Language

English

Subject Headings

Stress wavesSeismic waves -- Measurement -- Mathematical modelsSeismic waves -- Scattering -- Mathematical models

Thesis Number

T 2802

Print OCLC #

6024803

Electronic OCLC #

913750291

Recommended Citation

Choudary, Narendra Y. B., "An investigation of the influence of grain size on stress wave attenuation and dispersion in rock like materials" (1973). Doctoral Dissertations. 240.
https://scholarsmine.mst.edu/doctoral_dissertations/240