Masters Theses

Abstract

"A transient method for experimentally determining the interface conductance between metallic surfaces in contact is developed. The method applies the theory of negligible internal thermal resistance of one of the materials which form the interface. The method is applicable when the interface conductance is very low, a situation which exists when low conductance interstitial materials are used between contacting surfaces for purposes of thermal isolation. In this investigation, stainless steel wire screens of 10 and 100 mesh were used as interstitial materials between aluminum surfaces in a vacuum environment of 10⁻⁵ to 10⁻⁶ Torr. The interface pressure ranged from 40 to 200 psi. The roughness of the contacting surfaces ranged from 15 to 25 micro inches, root mean square. The experimental results show that the average thermal conductance obtained by the transient method was from 96.04 to 98.5 % of the steady state thermal conductance when the 10 mesh wire screen was used as the interstitial material and was from 79.28 to 91.13 % of the steady state thermal conductance when the 100 mesh wire screen was used. The results thus show that the method of negligible internal thermal resistance is quite reliable for very low interface conductances"--Abstract, page ii.

Advisor(s)

McNary, Ross O.

Committee Member(s)

Gyorog, Donald A., 1931-2007
Ho, C. Y. (Chung You), 1933-1988

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering

Publisher

University of Missouri--Rolla

Publication Date

1970

Pagination

v, 42 pages

Note about bibliography

Includes bibliographical references (pages 49-54).

Rights

© 1970 Richard Chuka Oboka, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Library of Congress Subject Headings

Extracellular matrix -- Thermal conductivity
Heat -- Conduction -- Measurement
Metals -- Thermal conductivity

Thesis Number

T 2510

Print OCLC #

6029620

Electronic OCLC #

871712156

Comments

Page iv was omitted in numbering sequence.

Share

 
COinS