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Pretensioning for Preventing Fatigue Failure in Bolts

Pretensioning for Preventing Fatigue Failure in Bolts The prevention of fatigue in bolts by controlled pretensioning is investigated theoretically. It is shown that the effect of pretension is to reduce the alternating load in the bolt and that the stiffness of the fitting plays an important part in this reduction. Fatigue tests on in. B.S.F. bolts with various amounts of pretension show how this reduction in alternating load can prevent fatigue failure. A warning is given against relying on the benefits of pretensioning without ensuring that pretension is maintained in service. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Pretensioning for Preventing Fatigue Failure in Bolts

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb032166
Publisher site
See Article on Publisher Site

Abstract

The prevention of fatigue in bolts by controlled pretensioning is investigated theoretically. It is shown that the effect of pretension is to reduce the alternating load in the bolt and that the stiffness of the fitting plays an important part in this reduction. Fatigue tests on in. B.S.F. bolts with various amounts of pretension show how this reduction in alternating load can prevent fatigue failure. A warning is given against relying on the benefits of pretensioning without ensuring that pretension is maintained in service.

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: Jun 1, 1952

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