Accelerated rain erosion test for aeronautic material validation

Short summary A technology center located in the north of Spain, is sought a laboratory or technological center provider of testing services for the aeronautical sector, which has the ability and experience to perform an "accelerated rain erosion test", to validate the properties of materials developed in the environment of an ongoing research project

Full description This technology center, with extensive experience in the research and development of new thermoplastic functional materials, is immersed in a research project to develop specific coatings on thermoplastic and composite material for the aeronautic sector in order to provide new functionalities such as resistance to erosion. To validate these properties, the technology center is looking for a laboratory or research center with the capacity to perform a specific "accelerated rain erosion test". This testing would be subcontracted directly to the project budget.

Technical Specification or Expertise Sought The erosion of a material which is caused by rains depends on a great number of test parameters. The most important parameters area the impact velocity, angle of incidence of the drops, density of rain measured as the ratio water volume/air volume, drop size, temperature of the water and specimen and gas content of the water. For the investigation serving to compare different material, we had preliminary agreed or chosen the following standard conditions: • Impact velocity=410 m/s • Water volume concentration (rain density) Ƿw/l=10-5 • Medium drop diameter D=1.2 mm • Angle of incidence Ɵ=0º • Specimen temperature Tp=40ºC • Water temperature Tw=25 ºC • Gas content of the water: almost nitrogen saturated (20ºC, 5atm nitrogen) • The test will be carried out on a flat cylindrical specimen of 10-8 mm diameter and thickness form 2 to 10 mm. The area exposed to the rain is 1,76 cm2 NOTE: These conditions are still under discussion and are condition founded in bibliography, we are open to new suggestion from the test performers experience and expertise.

Contact / source: NEXT EEN Widgets (europa.eu)