Aircraft materials

The pulser/receiver HILL-SCAN 30XX boards satisfy DIN 25450. Typical applications are ultrasonie imaging systems for nuclear power stations and for aircraft, material characterization, transducer qualification, replacement of portable flaw detectors (inspections of welded joints), inspection of new materials, measurement systems with air eoupling. ... 

Sarkos, C. P., Filipczak, R. A. and Abramowitz, A., "Preliminary Evaluation of an Improved Flammability Test Method for Aircraft Materials." (DOT/FAA/CT-84/22). Federal Aviation Admin., Atlantic City Airport (1984). 

Aircraft Material Fire Test Handbook, DOT/FAA/CT-89/15, U.S. Department of Transportation, Federal Aviation Administration Atlantic City, NJ, 1990. 

The principal lire tests in the Aircraft Materials Fire Test Handbook are the following ... 

It is less clear why there has been very little use of other types of inorganic matrices. Some inorganic solids would seem to have useful properties for this purpose, but the only one which has been described in any detail is sodium silicate. This was the binder for the bonded coating developed by the US Naval Aircraft Materials Laboratory which was described in Chapter 11, but the same material was used ° as a bulk composite in certain components in a dry-lubricated engine. It was used to provide transfer lubrication, and presumably it was not capable of use in load-bearing situations. 

Lord. R. J. (1985). In-service nondestructive inspection of fighter and attack aircraft. Materials Evaluation. May 1985, 43, 5, 133-739. 

Vlot AD. GLARE — a history of development of a new aircraft material. Springer 2001. Compston P, Cantwell WJ, Jones C, Jones N. Impact perforation resistance and fracture mechanisms of a thermoplastic based fiber-metal laminate. J Mater Sci Lett 2001 20 597-9. 

Current understanding of the erosion of polymer laminates has come chiefly from rain erosion studies of composite aircraft materials. Analogies have been drawn between cavitation and liquid impingement processes on metallic materials both involve extensive structural damage early in the incubation period as a result of short-term shock pulses. Furthermore, the deformed surfaces of materials which are subjected to both processes are very similar, and so are the methods used to improve their performance [99]. Attempts have been made to prioritize the factors affecting erosion of FRP by liquid impingement, with more or less predictable results [100] in respect of resin composition, fiber volume fraction and orientation, porosity and thermal conductivity. All these factors were found to affect performance. 

Veimeeren C (ed) (2002) Around glare a new aircraft material in context. Kluwer, Dordrecht VDI Plastics Technologies (March 2009) Plastics in automotive engineering, VDI Plastics Technologies, VDI-K, Mannheim... 

Aircraft materials fire test handbook. FAA 2006. http //www.fire.tc.faa.gov/handbook. stm. see also Appendix C. 

Since January 1990, the Federal aviation authority have adopted the developed at Ohio State University method, in which the heat radiation (HR) and the rate of heat release (RHR) are determined. The standard regulates the HR level at 65 kJ. Many aircraft materials do not face this demand for example, the ternary copol mier of acrylonitrile, butadiene and styrene resin, the polycarbonate, phenol and epoxide resins. It is foreseen to substitute these materials by such pol5miers, which meet these requirements. The measurements in combustion chamber of Ohio State University indicated that polyesteresterketone fulfills this standard. 

Aircraft Materials Eire Test Handbook, Final Report DOT/FAA/AR-00/12, Federal Aviation Administration, April 2000. 

Fourteen commercially available organic foam insulations were examined to determine their suitability for insulating liquid hydrogen tanks of subsonic hydrogen fueled aircraft. Materials investigated were polyurethane, polymethacryllmide, polyisocyanurate, polymetric isocyanate, polybenzamidazole, toluenedi isocyanate, and isocyanate foam. The test specimens included foams with chopped fiberglass reinforcements, flame retardants, and vapor barriers. 

Urea is widely used as an airport runway deicer, as it is not corrosive to aircraft materials. However, urea is generally not considered to be a viable alternative deicing chemical for highway applications. Reported limitations include higher application rates, longer reaction times, effectiveness only at temperatures above -10°C, relatively high cost, and significant adverse effects on the environment. ... 

Seher, C. and Broz, A. L., National Research Program for Nondestructive Inspection of Aging Aircraft, Materials Evaluation, 49 1547-1550 (1991). 

On-board corrosion monitoring systems can facilitate the testing and evaluation of aircraft materials and corrosion control methods under actual operating conditions. Sensitive techniques make such evaluations possible in short time frames. 

Grover, H.J., Hyler, W.S., Jackson, L.R. Fatigue strength of aircraft materials axial load fatigue tests on edge-notch sheet specimens of 2024-T3 and 7075-T6 aluminum alloys and of 8AE41 steel. NASA Technical Note D 111 (1959)... 

Peterson, R.E. Analytical approach to stress concentration effects in aircraft materials. Technical Report 59-507, U.S. Air Force-WADC Symposium on Fatigue in Metals, Dayton, OH (1959)... 

Grover, H.J., Bishop, S.M., Jackson, L.R. Fatigue Strengths of Aircraft Materials. Axial Load Fatigue Tests on Notched Sheet Specimens of 24S-T3 and 75S-T6 Aluminum Alloys and of SAE 4130 Steel. Report NACA TN 2324 (1951)... 

Schijve, J. The Accumulation of fatigue damage in aircraft materials and structures. In Symposium on Random Load fatigue. Conference Proceedings AGARD-CP-118, pp. 3-84 (1972)... 

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