Studying the Crack Resistance of Some Parts of Hydropower Equipment


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Abstract

Presented are results of photoelastic study on the stress-strain state of some critical parts and components of hydropower equipment such as the distributor (manifold) of a Pelten turbine, threaded studs for large pressure vessels and turbine cover, welded joint between blades and the rim of a Francis turbine weakened by cracks. Stress-intensity factors depending on the shape, position, size, and the interaction of cracks are obtained. Formulas based on the experimental results are proposed.

About the authors

V. R. Migurenko

Spetsgidroénergomontazh

Author for correspondence.
Email: melnikovboris@mail.ru
Russian Federation, St. Petersburg

B. E. Mel’nikov

Peter the Great St. Petersburg Polytechnic University

Email: melnikovboris@mail.ru
Russian Federation, St. Petersburg

S. N. Éigenson

Peter the Great St. Petersburg Polytechnic University

Email: melnikovboris@mail.ru
Russian Federation, St. Petersburg

N. V. Korikhin

Peter the Great St. Petersburg Polytechnic University

Email: melnikovboris@mail.ru
Russian Federation, St. Petersburg

T. P. Raimberdiev

Ahmet Yesevi University

Email: melnikovboris@mail.ru
Kazakhstan, Turkistan

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