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In the study, acoustic emission (AE) technique was applied to monitor polymer failures. Specimens produced of
two aluminum flat bars bonded together with a thick layer of cured epoxy resin were subjected to double cantilever
beam (DCB) test. Epidian 5 epoxy resin cured with PAC curing agent as well as Epidian 53 epoxy resin cured with
Z1 curing agent were used as adhesives. However, a special procedure of specimens preparation was needed which
was elaborated by authors after preliminary research including aditional analysis of surface roughness parameters
and surface free energy of aluminum flat bars. Acoustic emission system was then used to register AE signal pa-
rameters during fracture test: frequency of elastic waves emitted inside the material, number of hits (event), num-
ber of counts, energy and amplitude. Next, the obtained AE parameters were deeply analyzed and compared to the
results of mechanical test and authors’ previously conducted examinations. Moreover, a special emphasis was put
on applicability of wawelet transform (WT) as well as numerical simulation for fracture analysis was conducted.
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