@ARTICLE{Jaroniek_Mieczysław_Experimental, author={Jaroniek, Mieczysław}, volume={vol. 48}, number={No 4}, journal={Archive of Mechanical Engineering}, pages={329-357}, howpublished={online}, publisher={Polish Academy of Sciences, Committee on Machine Building}, abstract={Brittle fracture of the reinforced composite element has been a matter of considerable concern to engineers for many years. It is now generally accepted that the mode of failure is the centerpiece of the problem. The publication presents the experimental and numerical procedure used to determine the state of' the stress in the photoelastic model of reinforced beams. The fracture process of fiber reinforced composite materials is very complicated, and the fracture strength is affected by: matrix cracking, fiber breakage and interfacial debonding between matrix and fibers. The criterion used to calculate the maximum load was derived based on two processes only: matrix cracking and deformation of the rei nforcerncnt. The theoretical ultimate bending moment was calculated using the strain energy release rate Ge and the stress intensity factors (K11 and K1) corresponding to the crack propagation of the matrix and the elastic-plastic deformation or the yield limit of the reinforcement.}, type={Article}, title={Experimental and numerical analysis of the reinforced composite elements subjected to bending}, URL={http://ochroma.man.poznan.pl/Content/125344/PDF/5_MECHANICAL_48_2001_4_Jaroniek_Experimental.pdf}, keywords={composites, reinforced beams, fracture mechanics, photoelustic method, finite clement method}, }