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Estimation of dependence of durability of ship shaft with cracks on their initial sizes

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Author(s): Doan Van Tinh | Mamontov Victor Andreevich

Journal: Vestnik of Astrakhan State Technical University. Series: Marine Engineering and Technologies
ISSN 2073-1574

Issue: 2;
Start page: 50;
Date: 2009;
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Keywords: ship shaft | durability | crack | factor of pressure intensity | diagram of endurance failure | basic constants of the material.

ABSTRACT
The technique of calculation of durability of ship shaft with cracks is con-sidered depending on the initial sizes of cracks. The information on the develop-ment of cracks is given and the way of definition of the factor of pressure intensity for experimental samples made of 35 steel is described. The diagram of the endurance failure is drawn on the basis of the results of the experimental researches. The basic constants of the material n and c are determined. The results of calculation of durability of the propeller shaft with cracks of the tanker with 1 000 T deadweight of the Vietnamese construction are given depending on the initial sizes of cracks.
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