Interactive growth of multiple fiber-bridged matrix cracks in unidirectional composites
Article Abstract:
The equivalence between monotonic and cyclic loading for multiple cracking is the same as that for a single crack in the matrix of a fiber-reinforced composite having multiple cracks. The interactions among cracks and slip zones reduce the crack tip stress intensity factor in multiple cracking. The growth of the fatigue crack is slower than that for a single bridged crack or for multiple nonbridged cracks. This significantly delays the onset of steady-state crack growth.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1996
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Durability and damage development in woven ceramic matrix composites under tensile and fatigue loading at room and elevated temperatures
Article Abstract:
Results demonstrate that the tensile strength and failure strain of silicon carbide/silicon nickel carbide woven ceramic composites increases with temperature but the modulus and proportional limit decrease above 700 C. The fatigue strength is significantly high at room temperature and decreasing to 50 and 20% at 700 C and 1000 C, respectively.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 2000
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Low cycle fatigue of unidirectional laminates: stress ratio effects
Article Abstract:
The upper bound for the "non-cyclic" low cycle fatigue region of the unidirectional glass/epoxy composite is about 20 loading cycles, which is less than in cyclic region as determined by S-N curves. Data suggest that finite strain rates, stress ratios and stress duration may affect low cycle fatigue behavior of polymer matrix composites.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 2000
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