Doctoral Dissertations


"During this experimental testing program the effects of the simultaneous application of high pressure and temperature environments on the mechanical properties of 6061-T651 aluminum were analyzed. From the data obtained at the yield and ultimate points a yield and ultimate model was developed based upon the parameters effective stress, effective strain, and the hydrostatic component of stress. This model was obtained solely from the data acquired from uniaxial tensile specimen tested at various pressures and temperatures. Two other loading paths--biaxial tension and torsion--were then used to verify the accuracy of the model. From the testing program, data were also obtained for the effects of the pressure and temperature environments on the other material properties such as Young's Modulus, Poisson's Ratio, and ductility. The third objective of this testing program was to develop test fixtures which would be able to perform the required tests as well as to operate under the extreme environmental conditions"--Abstract, page iii.


Davis, Robert L.

Committee Member(s)

Penico, Anthony J., 1923-2011
Lehnhoff, T. F., 1939-
Schowalter, Ralph E., 1923-2001
Parry, Myron G.


Mechanical and Aerospace Engineering

Degree Name

Ph. D. in Mechanical Engineering


University of Missouri--Rolla

Publication Date



xi, 93 pages

Note about bibliography

Includes bibliographical references (pages 91-92).


© 1973 Patrick George Davidson, All rights reserved.

Document Type

Dissertation - Restricted Access

File Type




Library of Congress Subject Headings

Aluminum alloys -- Mechanical properties
Aluminum alloys -- Effect of high temperatures on
Strains and stresses

Thesis Number

T 2996

Print OCLC #


Electronic OCLC #


Link to Catalog Record

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