Fatigue and Fracture Resistance of an Aircraft Landing Gear Steels V-ROL N and VIP P-ROL N Heat Treated to Lower Strength Limit

Ivo Černý; Jiří Sís

doi:10.4028/www.scientific.net/KEM.627.137

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 627Fatigue and Fracture Resistance of an Aircraft...

Fatigue and Fracture Resistance of an Aircraft Landing Gear Steels V-ROL N and VIP P-ROL N Heat Treated to Lower Strength Limit

Abstract:

V-ROL N is an aircraft steel produced in Czech Republic at Poldi Kladno, used for many years for a manufacture of aircraft landing gears, particularly for a small passenger aircraft L 410. The V-ROL N steel, known by its very good or even excellent fatigue and fracture properties, has not been more available due to recent privatization of the company. Therefore, a substitution of materials previously used became an issue. The paper contains results of a comprehensive experimental programme aimed at comparison of the V-ROL N steel used in the past, still available for research purposes, with another steel of a similar type, VIP P-ROL N steel, manufactured in Czech Republic by another company. Fatigue resistance of both versions can be considered as good. Slightly higher scatter of fatigue results of VIP P-ROL N version can be attributed to an occurrence of impurities, although quite rare, responsible for fatigue crack initiation.

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Periodical:

Key Engineering Materials (Volume 627)

Pages:

137-140

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.627.137

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Online since:

September 2014

Authors:

Ivo Černý*, Jiří Sís

Keywords:

Aircraft Landing Gear Steel, Fatigue Damage Mechanisms, Fatigue Resistance

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