FATIGUE FAILURE IN MARINE PROPELLOR BLADES

The calculation of stress pattern and alternating stress imposed on the blades of a ni-al bronze propeller was carried out by the unsteady lifting surface theory. Fatigue tests in sea water were carried out with large sized unnotched and notched specimens taken from actual propeller blades, and the fatigue life up to crack initiation was estimated with obtained fatigue curves and stress-frequency curves already known. Fatigue life up to the failure after crack initation was also estimated. The formula showing the relationship between maximum flaw size and stress was obtained.

• Corporate Authors:

  Marine Engineering Society in Japan

  Osaka Building, 1-2-2 Uchisaiwai-Cho, Chiyoda-Ku
  Tokyo 100,   Japan 
• Authors:
  • Tokuda, S
  • Okuyama, Y
• Publication Date: 1977

Language

• Japanese

Media Info

• Features: References;
• Pagination: 11 p.
• Serial:
  • Marine Engineering Society in Japan, Journal of
  • Volume: 12
  • Issue Number: 1

Subject/Index Terms

• TRT Terms: Aerodynamic lift; Blades (Machinery); Cracking; Failure; Propeller blades; Stresses; Structural analysis
• Uncontrolled Terms: Crack propagation
• Old TRIS Terms: Blade stresses; Lifting surface theory
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00159959
• Record Type: Publication
• Source Agency: Ship Research Institute of Norway
• Files: TRIS
• Created Date: Sep 20 1977 12:00AM