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In the paper, fiber reinforced polymer (FRP) composite’s matrix damage resistance was evaluated
based on a mechanical behavior of selected materials. Four materials were selected to scientific inves-
tigation. Epidian 5 epoxy resin and Epidian 53 epoxy resin were cured using the curing agents with
various chemical composition: Z1 triethylenetetramine curing agent and PAC polyaminoamide curing
agent. Tensile tests were conducted to obtain strain-stress characterizations, as well as Charpy dynamic
impact tests and quasi-statical three-point bending tests were performed to calculate both dynamic
and static fracture toughness (KID and KIC, respectively). The relation between the values of fracture
toughness and other mechanical properties was discussed. The literature review in the field of polymer
materials and adhesives reveals that there is a lack of scientific publications considering the testing
results of that type. Therefore, the results obtained from the conducted research brings far-reaching
benefits for the practical use of them in these branches of industry where technology based on adhesion
phenomenon is dominant or significant. Aerospace and space industry, as well as automotive are the
branches of engineering directly interested in the obtained results. The specific motivation of this mul-
tilateral matrix-characterization research framework is a need to calibrate the acoustic- emission-based
elastic wave frequency analysis used in damage identification in composite laminates (FRPs), where
matrix cracking and delamination phenomena take place. Acknowledgements: This paper was finan-
cially supported by the Ministerial Research Project No. DEC-2016/21/B/ST8/03160 financed by the
National Science Centre, Poland.
