The Effect of Environmental Flight Conditions on Damage Propagation in Composite Sandwich Structure

• Autorzy: Synaszko P. , Sałaciński M. , Kornas Ł.

Identyfikatory

DOI

10.1515/fas-2015-0004

• Języki publikacji: EN

Abstrakty

EN

The aim of the study was to determine the traceability of damage growth caused by inclusions of water in the composite sandwich structure. It was assumed that as a result of temperature changes during the flight and accompanying phase transformation, the zone containing water inclusions increases. The growth is caused by the destruction (mainly the tearing of walls) of the core. As part of the work, this assumption was verified experimentally. For the experiment to be successful it was necessary to simulate actual flight conditions. The simulation involved inducing phase transformations of water in the core cell as a function of time and temperature. Before and after the experiments the non-destructive tests using pulsed thermography were performed. The test results revealed an increase in the number of cells occupied by water. Adequate specimens were designed and manufactured. The study showed that cyclical changes in temperature affected the propagation of water in core sandwich structures. Further, it was found that the increase in the surface area of water-containing inclusions could be monitored using thermographic techniques.

Słowa kluczowe

EN

honeycomb structures; detection of water ingress; thermografic techniques

• Wydawca: Wydawnictwa Naukowe Sieci Badawczej Łukasiewicz - Instytutu Lotnictwa
• Czasopismo: Fatigue of Aircraft Structures
• Rocznik: 2015
• Tom: Iss. 7
• Strony: 24--27
• Opis fizyczny: Bibliogr. 6 poz., rys., wykr.

Twórcy

autor

Synaszko P.

• Air Force Institute of Technology, ul. Księcia Bolesława 6, 01-494 Warsaw, Poland

autor

Sałaciński M.

• Air Force Institute of Technology, ul. Księcia Bolesława 6, 01-494 Warsaw, Poland

autor

Kornas Ł.

• Air Force Institute of Technology, ul. Księcia Bolesława 6, 01-494 Warsaw, Poland

Bibliografia

• [1] Meteorologia dla pilotów – poradnik, Szefostwo Służby Meteorologicznej Sił Zbrojnych RP, Warszawa 2011.
• [2] G. Wypych, Handbook of Environmental Degradation of Materials, ChemTec Publishing, 2003, ISBN 1-895198-28-3
• [3] H. Gandy, „Adhesiveless Honeycomb Sandwich Structure With Carbon Graphite Prepreg For Primary Structural Application: A Comparative Study To The Use Of Adhesive Film” Thesis by H. Gandy, Wichita State University, 1999.
• [4] Choi H.S., Jang Y.H., Bondline strength evaluation of cocure/precured honeycomb sandwich structures under aircraft hygro and repair environments, Composites: Part A 41 (2010)
• [5] Ibarra-Castanedo C., Marcotte F., Genest M., Brault L., Farley V., Maldague X. P. V., Detection and characterization of water ingress in honeycomb structures by passive and active infrared thermography using a high resolution camera, 11th International Conference on Quantitative InfraRed Thermography 2012
• [6] Bartholomeusz R.A., Reduction of shear and flatwise tension strength in f-111 honeycomb panels exposed to moisture, DSTO-TR-1331, 1996

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.