caa a22 4500 465740413 CHVBK 20180323111807.0 cr unu---uuuuu 170327e19900801xx s 000 0 eng 10.1007/BF00035514 doi (NATIONALLICENCE)springer-10.1007/BF00035514 Crack layer analysis of fatigue crack propagation in rubber compounds [Elektronische Daten] [H. Aglan, A. Chudnovsky, A. Moet, T. Fleischman, D. Stalnaker] A methodology to characterize the resistance of rubber compounds to crack propagation (fracture toughness) is presented. A constitutive model based on the crack layer theory is utilized to extract the specific energy of damage γ*, a material parameter characteristic of the material's resistance to crack propagation and the dissipative characteristic, β. The model expresses the rate of crack propagation as % MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGak0dh9WrFfpC0xh9vqqj-hEeeu0xXdbba9frFj0-OqFf% ea0dXdd9vqaq-JfrVkFHe9pgea0dXdar-Jb9hs0dXdbPYxe9vr0-vr% 0-vqpWqaaeaabaGaaiaacaqabeaadaqaaqaaaOqaamaalaaabaGaam% izaGqaciaa-fgaaeaacaWGKbGaa8Ntaaaaaaa!3AFA!\[\frac{{da}}{{dN}}\]= % MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGak0dh9WrFfpC0xh9vqqj-hEeeu0xXdbba9frFj0-OqFf% ea0dXdd9vqaq-JfrVkFHe9pgea0dXdar-Jb9hs0dXdbPYxe9vr0-vr% 0-vqpWqaaeaabiGaciaacaqabeaadaqaaqaaaOqaamaalaaabaGaeq% OSdiMaamOsamaaDaaaleaacaaIXaaabaGaaGOmaaaaaOqaaiaadMha% caGGQaGaamOuamaaBaaaleaacaaIXaaabeaakiabgkHiTiaadQeada% WgaaWcbaGaaGymaaqabaaaaaaa!41A5!\[\frac{{\beta J_1^2 }}{{y*R_1 - J_1 }}\] where da/dN is the cyclic rate of fatigue crack propagation (FCP), J 1 is the energy release rate (tearing energy) and R 1 is the resistance moment which accounts for the amount of damage associated with the crack advance. Microscopic examination revealed that crack tip microcracking is the dominant damage mechanism. Hence, R 1 was evaluated as the area (m2) of microcracking surfaces per unit crack advance. Fatigue crack propagation data for a particular rubber compound have been analyzed using the present model. The proposed equation describes the entire FCP history in the compound. According to this model, γ* and β for the compound investigated, are found to be 9.3 kJ m-2 and 9.7×10-9 m4/J-cycle, respectively. Kluwer Academic Publishers, 1990 Aglan H. Department of Macromolecular Science, Case Western Reserve University, 44106-2699, Cleveland, Ohio, USA aut Chudnovsky A. Firestone Tire and Rubber Company, 44325, Akron, Ohio, USA aut Moet A. Department of Macromolecular Science, Case Western Reserve University, 44106-2699, Cleveland, Ohio, USA aut Fleischman T. Firestone Tire and Rubber Company, 44325, Akron, Ohio, USA aut Stalnaker D. Firestone Tire and Rubber Company, 44325, Akron, Ohio, USA aut International Journal of Fracture Kluwer Academic Publishers 44/3(1990-08-01), 167-178 0376-9429 44:3<167 1990 44 10704 https://doi.org/10.1007/BF00035514 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00035514 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aglan H. Department of Macromolecular Science, Case Western Reserve University, 44106-2699, Cleveland, Ohio, USA aut NATIONALLICENCE 700 1- Chudnovsky A. Firestone Tire and Rubber Company, 44325, Akron, Ohio, USA aut NATIONALLICENCE 700 1- Moet A. Department of Macromolecular Science, Case Western Reserve University, 44106-2699, Cleveland, Ohio, USA aut NATIONALLICENCE 700 1- Fleischman T. Firestone Tire and Rubber Company, 44325, Akron, Ohio, USA aut NATIONALLICENCE 700 1- Stalnaker D. Firestone Tire and Rubber Company, 44325, Akron, Ohio, USA aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 44/3(1990-08-01), 167-178 0376-9429 44:3<167 1990 44 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer