Sand Erosion Resistance and Failure Mechanism of Polyurethane Film on Helicopter Rotor Blades
Linfeng Zheng,
Jinjuan Fan,
Qing Gong
et al.
Abstract:Polyurethane is widely used on the surface of composite materials for rotor blades as sand erosion protection materials. The failure mechanism investigation of polyurethane film under service conditions is useful for developing the optimal polyurethane film for rotor blades. In this article, the sand erosion test parameters were ascertained according to the service environment of the polyurethane film. The sand erosion resistance and failure mechanism of polyurethane film at different impact angles were analyz… Show more
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