HUN-REN-BME Research Group

Development of ductile polimer composites with designable interfacial adhesion

Project ID:
Supported by:
Hungarian National Research, Development and Innovation Office (NKFIH)
1 December 2017 - 30 November 2021
Supervisor (BME):
Dr. Gábor Szebényi

Participant researchers (BME):
Prof. Dr. h.c. mult. József Karger-Kocsis
Dr. Péter Tamás-Bényei
Balázs Magyar
Viktor Hliva

Project summary

The main research hypothesis is if the modification of the interlaminar adhesion in long fiber reinforced thermoset matrix composites can improve their ductility. Through the research process, many important questions about the role of adhesion in multiphase systems will be addressed and answered: What is the optimal level of adhesion providing ductile behavior through the relative slippage of the constituents without compromising the strength provided by good load transfer? How do interlaminar patterns effect the global and local deformation of a composite structure? Is there a difference in the behavior in composites with regular and random interlaminar patterns? How does pattern geometry (spacing, fiber diameter, periodicity, orientation) effect the global and local mechanical characteristics? Can a thermoplastic interphase material act as a healing agent in a composite system?

Project results

Section 1
1 December 2017 - 30 November 2018
We have prepared a literature survey on the damage and failure mechanisms, non-destructive test methods, ductility, ductility improvement of endless fiber reinforced composites and applicable methods for ductility improvement. We have created concepts for interlaminar patterns and produced interfacially engineered composites from epoxy matrix, carbon fibers and PCL and PESU interlaminar patterns. Our first static (tensile and 3 point flexural) and dynamic (Charpy impact) tests approved the pseudo ductile behavior.
Printing of interfacial pattern

Section 2
1 December 2018 - 30 November 2019
The main research topics of the second year of the project were the following: - Creation of novel interlaminar patterns based on the results of the preliminary tests. - Investigation of the surface filling ratio on the ductility of the composites, definition of optimal filling in case of the best interlaminar patterns. - Investigation of the effect of interlaminar patterns and created delaminated zones on the full-field deformation of composites by digital image correlation (DIC) during non-destructive low load testing. - Starting of finite element modeling of the interlaminar patterned/delaminated structures. - Starting of the development of alternative patterning technology based on LASER degradation of the sizing of the reinforcement fibers.
Strain map of composites with different interlaminar patterns

Section 3
1 December 2019 - 30 November 2020
The main research topics of the third year of the project were the following: - Exhaustive tests on the prepared interfacially engineered composites. - Static and dynamic testing, investigation of the effect of the interlaminar patterns. - Tests with full-field strain measurements to define affected zones, strain distributions. - Morphological investigations.
Fracture mechanism of composites without (1) and with (2) interfacial patterns

Section 4
1 December 2020 - 30 November 2021
The main research topics of the fourth year of the project were the following: - Testing of the optimized interlaminar patterned samples in static, dynamic and cyclic conditions - Testing of the possibility of fracture location definition by 3D printed patterns - Testing of samples prepared by alternative patterning methods (chemical removal of sizing) - Testing of the possibility to include shape memory effects in the interfacially patterned composites
Localized fracture surface of Charpy impact specimens containing interlaminar pattern

Section 5
1 December 2021 - 31 May 2022
The tasks carried out and the results achieved in the final phase of the project were: - Investigation of the effect of interlayer patterns on fatigue properties of composites. - Description and optimization of the self-repair process by model fitting.
Crack propagation in a composite with interlaminar pattern

Project-related publications

  1. Tamás-Bényei P., Sántha P.: Potential applications of basalt fibre composites in thermal shielding. Journal of Thermal Analysis and Calorimetry, 147, 1-9 (2023) 10.1007/s10973-022-11799-2 IF=4.4 Q1
  2. Hliva V., Szebényi G.: Non-Destructive Evaluation and Damage Determination of Fiber-Reinforced Composites by Digital Image Correlation. Journal of Nondestructive Evaluation, 42, 43/1-43/15 (2023) 10.1007/s10921-023-00957-7
  3. Szebényi G., Magyar B., Czigány T.: Achieving Pseudo-Ductile Behavior of Carbon Fiber Reinforced Polymer Composites via Interfacial Engineering. Advanced Engineering Materials, 23, 2000822/1-2000822/7 (2021) 10.1002/adem.202000822 IF=4.122 Q2
  4. Karadi D. T., Sipos A. A., Halász M., Hliva V., Hegyi D.: An elastic phenomenological material law of technical textile with a nonlinear shear behaviour. Journal of Reinforced Plastics and Composites, 40, 759-769 (2021) 10.1177/07316844211005842 IF=3.383 Q2
  5. Magyar B., Czigány T., Szebényi G.: Metal-alike polymer composites: The effect of inter-layer content on the pseudo-ductile behaviour of carbon fibre/epoxy resin materials. Composites Science and Technology, 215, 109002/1-109002/8 (2021) 10.1016/j.compscitech.2021.109002 IF=9.879 Q1
  6. Szebényi G., Hliva V., Magyar B.: Development of interphase engineering techniques for the ductility improvement in CF/EP composites - Comparison of NDT methods for delamination localization. Materials Today: Proceedings, 34, 113-116 (2020) 10.1016/j.matpr.2020.01.403
  7. Szebényi G., Blößl Y., Hegedűs G., Tábi T., Czigány T., Schledjewski R.: Fatigue monitoring of flax fibre reinforced epoxy composites using integrated fibre-optical FBG sensors. Composites Science and Technology, 199, 108317/1-108317/8 (2020) 10.1016/j.compscitech.2020.108317 IF=8.528 D1
  8. Szebényi G., Magyar B., Czigány T.: Achieving Pseudo-Ductile Behavior of Carbon Fiber Reinforced Polymer Composites via Interfacial Engineering. Advanced Engineering Materials, 23, 2000822/1-2000822/ (2020) 10.1002/adem.202000822 IF=3.862 Q2
  9. Tamás-Bényei P., Bitay E., Kishi H., Matsuda S., Czigány T.: Toughening of Epoxy Resin: The Effect of Water Jet Milling on Worn Tire Rubber Particles. Polymers, 11, 529/1-529/11 (2019) 10.3390/polym11030529 IF=3.426 Q1
  10. Hliva V., Szebényi G.: Mesterséges rétegelválás modellezése polimer kompozitokban. in 'XXVII. Nemzetközi Gépészeti Konferencia (OGÉT2019) Nagyvárad, Románia. 2019.04.25-2019.04.28.,197-200 (2019)
  11. Szebényi G., Hliva V.: Detection of Delamination in Polymer Composites by Digital Image Correlation—Experimental Test. Polymers, 11, 523/1-523/11 (2019) 10.3390/polym11030523 IF=3.426 Q1
  12. Szebényi G., Hliva V., Tamás-Bényei P.: Investigation of delaminated composites by DIC and AE methods. in 'International Conference on Composite Materials (ICCM22) Melbourne, Australia. 2019.08.11-2019.08.16,7 (2019)
  13. Magyar B., Szebényi G., Czigány T.: Comparison of different interfacial engineering methods to achieve pseudo-ductile behaviour of carbon fibre reinforced polymer composites. in 'International Conference on Composite Materials (ICCM22) Melbourne, Australia. 2019.08.11-2019.08.16,9 (2019)
  14. Szebényi G., Magyar B.: Effect of fibre sizing on the interlaminar properties of polyamide matrix composites. IOP Conference Series: Materials Science and Engineering, 426, 012044/1-012044/7 (2018) 10.1088/1757-899X/426/1/012044

© 2014 BME Department of Polymer Engineering - Created by: Dr. Romhány Gábor