10.14489/td.2015.04.pp.029-036

2015, 04 April

DOI: 10.14489/td.2015.04.pp.029-036

Stepanova L.N., Kovalenko N.A., Chernova V.V., Ognyanova E.S., Drobyaz E.A., Bataev V.A.
THE APPLICATION OF FINITE ELEMENTS METHOD, STRAIN MEASUREMENT AND ACOUSTIC EMISSION FOR DETERMINATION FRACTURE MECHANISM OF CARBON FIBER-REINFORCED PLASTIC SAMPLES DURING STRENGTH TESTS
(pp. 29-36)

Abstract. It is presented the results of strength tests of ten carbon fiber-reinforced plastic (CFRP) samples with the honeycomb aggregate. Samples were loaded with the electrohydraulic machine MTS-10 until destruction. Static tensile load changed stepwise with step of 2,5 kN. The methodology of the strength test of CFRP samples with use of finite elements method, strain measurement and acoustic emission is devised. The final and element model was used to determinate tension in the material. According to this model, every layer is modeled as a solid orthotropous material with locate coordinate system, which is conformed the fiber angle. The results of fractography make it possible to provide the fact that there are fiber and matrix disruptions into the test sample at the load equal to 37 kN. The estimated breaking load is 30,39 kN. It is result of the finite element calculation. The error of estimated and experimental results does not exceed 17,8 %.

Keywords: carbon fiber-reinforced plastic (CFRP), acoustic emission, signal, load, strain measurement, tension, location, strength, fractography, section.

+ - About the Authors Click to collapse

L. N. Stepanova, N. A. Kovalenko, E. S. Ognyanova
Federal State Unitary Enterprise «Siberian Aeronautical Research Institute named after S. A. Chaplygin», Novosibirsk, Russia.

V. V. Chernova
The Siberian State University of Railway Engineering, Novosibirsk, Russia.

E. A. Drobyaz, V. A. Bataev
Novosibirsk State Technical University (NSTU), Novosibirsk, Russia. E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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