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A Study on the Fatigue Strength of Highly Skewed Propeller  

Kang Nak-Hwoun (SH공사 집단에너지사업단)
Kim Jong-Ho (한국해양대학교 기관시스템공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.28, no.7, 2004 , pp. 1131-1137 More about this Journal
Abstract
Recently there has been a remarkable increase in the number of high speed and large ships and the high power involved for propulsion of above ships has brought high pitch ratio and highly skewed propeller. The recent tendency toward highly skewed propeller has increased the load on propeller blades, and the fatigue strength of propeller blades has become the critical point in design of propellers for ships. In this paper the effect of stress ratio and skew angle on the fatigue strength of highly skewed propeller, the statistical inference on the total revolutions of highly skewed propeller for 20 years under normal sea going state. and so on have been discussed. On the basis of above discussions, the highly skewed propeller blade thicknesses by the rules of classification society and the standards of manufacturer in country were compared and reviewed.
Keywords
Highly skewed Propeller; Fatigue strength; Stress ratio; Probability of failure; Cumulative damage factor;
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