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Analytical and Experimental Investigation of Flow and Fracture Mechanisms Induced by Indentation in Single Crystal MgO

Published online by Cambridge University Press:  06 March 2019

T. Larchuk ,
T. Kato ,
R. N. Pangborn  and
J. C. Conway Jr.
T. Larchuk
Affiliation:
Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802 USA
T. Kato
Affiliation:
Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802 USA
R. N. Pangborn
Affiliation:
Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802 USA
J. C. Conway Jr.
Affiliation:
Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802 USA
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Extract

The flow and fracture behavior of ceramic and other brittle materials under the influence of contact loading is important to both component fabrication and performance. The ease of machining, severity of residual surface damage and rate of wear during subsequent service are controlled to a large degree by the character and extent of the flow zone and its influence on the fracture mode. This Investigation was undertaken to provide experimental verification of the results obtained through elastic/plastic finite element modeling cf the stress distribution and deformations introduced by static contact loading. Experimentally, X-ray double-crystal diffractometry (DCD) was applied to obtain a mapping of the distortions produced beneath a Vickers indenter, and hence to evaluate the effect of material and geometric parameters on the flow and fracture mechanisms.

Type
V. X-Ray Stress Determination, Position Sensitive Detectors, Fatigue and Fracture Characterization
Information
Advances in X-Ray Analysis , Volume 26: Thirty-First Annual Conference on Applications of X-ray Analysis, August 1-6, 1982 , 1982 , pp. 299 - 306
Copyright
Copyright © International Centre for Diffraction Data 1982

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References

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