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An Experimental Investigation of the Stresses in Extruded Sections Commonly Used in Aircraft Construction


Dunn, Louis Gerhardus (1938) An Experimental Investigation of the Stresses in Extruded Sections Commonly Used in Aircraft Construction. Master's thesis, California Institute of Technology. doi:10.7907/9FAV-3513.


The extensive use of reinforced duralumin sheet in aircraft construction makes it desirable to know the behaviour of such structures under load. This paper deals principally with the experimental results obtained by testing a large number of reinforced panels of various lengths under direct compression.

The main purpose of the investigation was to determine the ultimate stresses in the reinforcing members, which in this case were bulb-angles of a size commonly used in aircraft constrution. It was, however, felt that it would be desirable to obtain as much information from the tests as possible. Consequesntly the stresses in the bulb-angles were measured at intermediate loads for a number of panels. From this data it was possible to determine that portion of the total load carried by either the skin or the bulb-angles throughout the entire range of load.

Item Type:Thesis (Master's thesis)
Subject Keywords:Aeronautical Engineering
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Awards:Caltech Distinguished Alumni Award, 1974
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Sechler, Ernest Edwin
Group:GALCIT, Caltech Distinguished Alumni Award
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1938
Record Number:CaltechETD:etd-06242004-092300
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2706
Deposited By: Imported from ETD-db
Deposited On:24 Jun 2004
Last Modified:22 Jul 2021 22:54

Thesis Files

PDF (Dunn_lg_1938.pdf) - Final Version
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