The Characteristic Features of Composite Materials Specimen’s Static Fracture Investigated by the Acoustic Emission Method

Abstract:

The work is dedicated to the experimental study of micromechanics process of unidirectional composite materials’ specimens under static loading till its fracture using acoustic emission method compared with the strain-load deformation curve. An attempt is made to identify subtle effects of the failure process of the composite material which is impossible using the traditional methods of the strain measurement. The prospect of applying the method of acoustic emission (AE) for the development and improvement of existing methods of model tense- analysis is shown. The characteristic stages of the damage accumulation for unidirectional composites’ specimens and the effect of training on these processes are shown experimentally. It’s shown that the AE-deformation diagram have three stages in contrast to commonly used load-strain deformation curve with one stage. So it become possible to investigate the physical process of composite unit’s fracture under static load.

• Periodical: Applied Mechanics and Materials (Volume 232)
• Pages: 28-32
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.232.28
• Online since: November 2012
• Authors: Alexanders Urbahs, Mukharbiy Banov, Vladislav Turko, Kristine Tsaryova
• Keywords: Acoustic Emission (AE), Composite Material, Destruction, Static Loading, Strain-Stress-Acoustic Emission Diagram

References

[1] A. J. Durelli, V. J. Parks, H. C. Feng, F. Chiang: Strains and stresses in matrices with inserts. Mechanics of Composite Materials. Oxford, Pergamon Press, (1970), p.265—336.

DOI: 10.1016/b978-0-08-006421-5.50020-4

[2] A.A. Pollock: Acoustic Emission Inspection, Metals Handbook, ninth edition, Vol. 17, Materials Park, Ohio, ASM International, (1989), pp.278-294.

[3] Urbach A., Banov M., Turko V., Feshchuk Y. Diagnostics of Fatigue Damage of Gas Turbine Engine Blades. - Journals of World Academy of Science, Engineering and Technology, WASET Issue 59 (part IX), (2011), pp.906-911.

[4] Urbach A., Banov M., Harbuz Y., Turko V., Feshchuk J., Hodos N. Estimation of mechanical properties of the anisotropic reinforced plastics with application of the method of acoustic emission. - Transport and Telecommunication, ISSN 1407-6160, ISSN 1407-6179, (2010).