caa a22 4500 469125306 CHVBK 20180323133149.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF00035108 doi (NATIONALLICENCE)springer-10.1007/BF00035108 Modeling of crack bridging in a unidirectional metal matrix composite [Elektronische Daten] [Louis Ghosn, Pete Kantzos, Jack Telesman] The effective fatigue crack driving force and crack opening profiles were determined analytically for fatigue tested unidirectional composite specimens exhibiting fiber bridging. The crack closure pressure due to bridging was modeled using two approaches; the fiber pressure model and the shear lag model. For both closure models, the Bueckner weight function method and the finite element method were used to calculate crack opening displacements and the crack driving force. The predicted near crack tip opening profile agreed well with the experimentally measured profiles for single edge notch SCS-6/Ti-15-3 metal matrix composite specimens. The numerically determined effective crack driving force, ΔK eff, was calculated using both models to correlate the measured crack growth rate in the composite. The calculated ΔK eff from both models accounted for the crack bridging by showing a good agreement between the measured fatigue crack growth rates of the bridged composite and that of unreinforced, unbridged titanium matrix alloy specimens. Kluwer Academic Publishers, 1992 Ghosn Louis Sverdrup Technology, Inc., Lewis Research Center Group, 44142, Brook Park, Ohio, USA aut Kantzos Pete Lewis Research Center, National Aeronautics and Space Administration, 44135, Cleveland, Ohio, USA aut Telesman Jack Lewis Research Center, National Aeronautics and Space Administration, 44135, Cleveland, Ohio, USA aut International Journal of Fracture Kluwer Academic Publishers 54/4(1992-04-01), 345-357 0376-9429 54:4<345 1992 54 10704 https://doi.org/10.1007/BF00035108 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00035108 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ghosn Louis Sverdrup Technology, Inc., Lewis Research Center Group, 44142, Brook Park, Ohio, USA aut NATIONALLICENCE 700 1- Kantzos Pete Lewis Research Center, National Aeronautics and Space Administration, 44135, Cleveland, Ohio, USA aut NATIONALLICENCE 700 1- Telesman Jack Lewis Research Center, National Aeronautics and Space Administration, 44135, Cleveland, Ohio, USA aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 54/4(1992-04-01), 345-357 0376-9429 54:4<345 1992 54 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer