Marine composite propellers are ship propellers, usually made from fiber composites like glass or carbon fibers. They are infused with a high-strength resin like epoxy or polyimide. These composites are made from strong, light, and high-tech materials.

Advantages

The composite propellers can be made with a lay-up process which creates anisotropic properties. This can create a passive adaptation of the self-twisting propeller blades. Self-twisting blades are much more energy-efficient compared to rigid propeller blades.[1] Passive adaptation in form may also be affected by the geometry of the propeller.

Environmental effect

Composite materials offer an environmentally friendly option as well. The corrosion resistance[2] and resistance to impact damage of composite propellers[3] can lead to a long lifetime. Still, the water saturation of the propellers and the propeller application cause some problems with the longevity of composite propellers. Composites' corrosion resistance properties cannot be considered to be undeniably better than traditional metal alloys in the propeller application with today's technology.[4]

References

  1. ↑ Liu, Zhanke; Young, Yin L. (2009-08-01). "Utilization of bend–twist coupling for performance enhancement of composite marine propellers". Journal of Fluids and Structures. 25 (6): 1102–1116. doi:10.1016/j.jfluidstructs.2009.04.005. ISSN 0889-9746.
  2. ↑ Dr. S. Selvaraju, S.Ilaiyavel, 2011 APPLICATIONS OF COMPOSITES IN MARINE INDUSTRY
  3. ↑ Effects of Seawater Immersion on the Impact Resistance of Glass Fiber Reinforced Epoxy Composites
  4. ↑ Yamatogi, Toshio; Murayama, Hideaki; Uzawa, Kiyoshi; Mishima, Takahiro; Ishihara, Yasuaki (2011). "Study on Composite Material Marine Propellers". Marine Engineering. 46 (3): 330–340. doi:10.5988/jime.46.330. S2CID 135597704.
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