Electronics Incorporated - The Shot Peener - Shot Peening Library
Title: Practical Aspects of Application of Shot Peening to Improve the Fatigue Behaviour of Metals and Structural Components
Author: Wohlfahrt, H.
Source: Conf Proc: ICSP-3, (p.563-584)
Publication year 1987
Document number: 1987069
Number of pages: 22
Abstract:
The aims of this paper are to describe the favourable effects of shot peening which can be useful for the improvement of the fatigue behaviour in practical applications and
to direct attention to the special peening conditions, which have to be obeyed as well as to indicate limitations in improving the fatigue behaviour by shot peening. In
order to fulfil these purposes it is necessary to classify structural components in different categories. Of primary importance for the classification is the kind of the
material and the state of the material of the structural components. Therefore this aspect shall serve as clue in the following. Other aspects concerning the effectiveness
of shot peening for structural components of different shape and dimensions or under different kinds of loading have to be taken into consideration separately for different
materials and material states. Especially results on the effectiveness of shot peening in notches respectively of notched parts can not simply be transferred from one state
of a material to the other. Also not simply transferable from one material to the other are results about the influence of shot peening on the fatigue behaviour under
different loading modes as loading with constant or with variable amplitudes, loading with or without mean stresses or tension-compression-, bending- or torsional loading.
Such results have also to be discussed separately in the different sections. Therefore in the following - after a short summary of principally important facts concerning
the effects of shot peening - the experimental results about shot peen induced improvements of the fatigue behaviour are reported in different sections for different
materials. For steels the different strength or hardness levels of the material can be represented by different structural components. Welded joints of steels are typical
components in a relatively soft, normalized state or in a quenched and tempered state of the material. Other typical structural components in a quenched and tempered state
are forgings. Gears and springs are typical representatives for structural components in a relatively hard materials' state - at least in surface layers - which are often
or mostly shot peened. Concerning A1 and Ti alloys it shall be discussed how significant important results from tests with specimens are for structural components. Finally
some remarks shall be made about the effect of shot peening of sintered materials.
Download full text pdf file
www.shotpeener.com
This page last revised: 04/24/2008