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Title:Electron microscope study of development of fatigue
Author(s):Craig, W.J.
Subject(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.
Issue Date:1952-02
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 27
Genre:Technical Report
Sponsor:Office of Naval Research, U. S. Navy, Contract N6-ori-71, Task Order IV; Project NR-031-005
Rights Information:Copyright 1952 Board of Trustees of the University of Illinois
Date Available in IDEALS:2021-11-04

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  • Technical Reports - Theoretical and Applied Mechanics (TAM)
    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.

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