Validation of microscopy measured porosity in carbon fibbers composites

• Autorzy: Jędral Arnold , Bona Anna

Identyfikatory

DOI

10.2478/kones-2019-0093

• Języki publikacji: EN

Abstrakty

EN

One of the most common defects in carbon fibrereinforced plastics (CFRP) is porosity. Too much of those defectscould be serious problemsto mechanical properties, which directly take effect on elements safety, like aircrafts. Therefore, the evaluation of porosity is very important test. Microscopic observations are widely used as a quality instrument in materials and constructions inspections. Cross section image of a material is easy to prepare and analyse. Porosity of a carbon fibrereinforced plasticcan be clearly spot in such kind of images. Study shows that in the most cases porosity appear between layers of fibres , rather between fibres. Unfortunately,image from microscope is only 2D picture from a small representative region. Because of that,comparison of 2D image to a real porosity distribution in all volume of a material is very difficult. To verify 2D microscopic observation method is necessary to perform another kind of tests. In this article , authors focused on non-destructive (NDT) and destructive testing methods. 2D porosity images from light microscope were compared with three different testing methods: ultrasonic test (UT), computed tomography (CT) test and constituent content of composite materials standard test method according to ASTM D3171 – 15, procedure B. Porosity results obtained from dissolution of resin from the carbon-epoxy resin sample.

Słowa kluczowe

EN

porosity; carbon fibre; microscope; UT; Ultrasonic test; CT; computed tomography

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2019
• Tom: Vol. 26, No. 4
• Strony: 83--90
• Opis fizyczny: Bibliogr. 14 ppoz., rys.

Twórcy

autor

Jędral Arnold

• Łukasiewicz Research Network − Institute of AviationCentre of Composite TechnologiesComposite Testing Laboratory Krakowska Av. 110/114, 02-256 Warsaw, Poland

autor

Bona Anna

• Łukasiewicz Research Network − Institute of AviationCentre of Composite TechnologiesComposite Testing Laboratory Krakowska Av. 110/114, 02-256 Warsaw, Poland

Bibliografia

• [1] Zhang, A., Zhang, D., The Mechanical Property of CFRP Laminates with Voids, Advanced Materials Research, Vols. 652-654, pp. 25-28, 2013.
• [2] Stamopoulos, A. G., Tserpes, K. I., Prucha, P., Vavrik, D., Evaluation of porosity effects on the mechanical properties of carbon fibre-reinforced plastic unidirectional laminates by X-ray computed tomography and mechanical testing, Journal of Composite Materials, 0 (0), pp. 1-12, 2015.
• [3] Grelsson, B., Correlations between porosity content, strength and ultrasonic attenuation in carbon fibre laminates, Materials & Design, Vol. 13, No. 5, 1992.
• [4] Bowkett, M., Thanapalan, K., Comparative analysis of failure detection methods of composites materials’ systems, Systems Science & Control Engineering: An Open Access Journal, Vol. 5, No. 1, pp. 168-177, 2017.
• [5] ASTM D3171-15, Standard Test Method for Constituent Content of Composite Materials, American Society for Testing and Materials, 2015.
• [6] ASTM D792-13, Standard Test Method for Density and Specific Gravity (Relative Density) of Plastics by Displacement, American Society for Testing and Materials, 2013.
• [7] Cohen, D., Mantell, S. C, Zhao, L., The effect of fibre volume fraction on filament wound composite pressure vessel strength, Composite Part B: Engineering, Vol. 32, Iss. 5, pp. 413-429, Elsevier, 2001.
• [8] Farhana, N. I. E, Abdul Majid, M. S., Paulraj, M. P., Ahmadhilmi, E., Fakhzan, M. N., Gibson, A.G., A novel vibration based non-destructive testing for predicting glass fibre/ matrix volume fraction in composites using a neural network model, Composite Structures, Vol. 144, pp. 96-107, 2016.
• [9] Sałacińska, A., Przegląd wymaganych badań fizyczno-chemicznych dla kwalifikacji materiałów kompozytowych, Prace Instytutu Lotnictwa, 2016.
• [10] Stepniowska, A., Wpływ wybranych parametrów na poprawność przeprowadzania badań zawartości składników stałych w materiale kompozytowym, Prace Instytutu Lotnictwa, 2016.
• [11] Reh, A., Visualization of Porosity in Carbon Fibber Reinforced Polymers, PhD thesis, Vienna University of Technology, 2015.
• [12] Madra, A., El Hajj, N., Benzeggagh, M., X-ray microtomography applications for quantitative and qualitative analysis of porosity in woven glass fibre reinforced thermoplastic, Composites Science and Technology, No. 95, pp. 50-58, 2014.
• [13] Garcea, S. C., Wang, Y., Whiters, P. J., X-ray computed tomography of polymer composites, Composites Science and Technology, No. 156, pp. 305-319, 2018.
• [14] Lin, L., Luo, M., Tian, H. T., Li, X. M., Guo, G. P., Experimental investigation on porosity of carbon fibre-reinforced composite using ultrasonic attenuation coefficient, 17th World Conference on Nondestructive Testing, Shanghai, China, 25-28 October 2008.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).