University of Illinois Urbana-Champaign

Electron microscope study of development of fatigue

Craig, W.J.

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https://hdl.handle.net/2142/111973

Description

Title
Electron microscope study of development of fatigue
Author(s)
Craig, W.J.
Issue Date
1952-02
Keyword(s)
  • Fatigue Failures
  • Electron Microscope
Abstract
In the use of the electron microscope in metallography, an increase in resolving power is realized over the optical microscope. In this paper a pictorial comparison is made of deformation marks on the surface of alpha brass, ingot iron and aluminum under both static and repeated loading. It is shown that under static loading the deformation is a general process taking place in all crystals while under conditions of repeated loading, the deformation is an extremely localized phenomenon taking place in a few crystals or portions of crystals. The appearance of the individual deformation marks produced by static loading as compared with those developed by repeated loading differed with the type of metal: (a) In alpha brass no differences were observed; (b) in ingot iron slight differences were observed; (c) in aluminum marked differences were observed.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 27
  • 1967-0325
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/111973
Sponsor(s)/Grant Number(s)
Office of Naval Research, U. S. Navy, Contract N6-ori-71, Task Order IV; Project NR-031-005
Copyright and License Information
Copyright 1952 Board of Trustees of the University of Illinois

Owning Collections

Technical Reports - Theoretical and Applied Mechanics (TAM) PRIMARY
TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.