... The performance of a representative 2D propeller section was investigated in rectilinear flow to determine the impact of small in-tolerance leading-edge defects on cavitation. A DTMB Mod NACA-66 blade section with 4% thickness and 1.4% camber was taken as representative of a blade section where...

... must be free from blemishes the later repair and refurbishment processes and provides an and film defects that could be confused as material defects. indication of the time and monetary commitment required to There are only specific sources of radiation, equipment, properly refurbish each shaft...

... cases, these failures reult0d from fatigue initiated from surface of shallow internal defects at the root of blade on the pressure side(l). In analyzing fatigue failure of marine propeller blades, both dynamic stress imposed on a blade and fatigue strength of blade materials should be taken into account...

.... The effect of casting quali ty and the influence of defects. 3. The effect of mean stress on fatigue life and the incidence of residual stresses. 4. Fatigue results on 3 inch diameter specimens of propeller alloys in 3% saline solution. A proposed philosophy of design stressing is given, taking into account...

... (yiel d st s mall p rength) erwas best ad~pted to determine he~erogeneity in castings and a better design property. (2 ) Tensile strength closely related only to the presence of defects in the casting. (3 ) Yield strengths were l ower toward the center of castings and increased at the edges...