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.

Observations, Composite materials, Fracture mechanics

---

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.

Statistical Data Included, Usage, Evaluation, Silicon carbide, Silicon carbides, Ceramic-matrix composites, Ceramic matrix composites

---

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.

Testing, Polymeric composites, Polymer composites, Epoxy compounds

Similar abstracts:

• Abstracts: Tailoring the microstructure of a metal-reinforced ceramic matrix composite
• Abstracts: Trace explosives signatures from World War II unexploded undersea ordnance. On-site immunoanalysis of nitrate and nitroaromatic compounds in groundwater
• Abstracts: An investigation of the effects of layer thickness on the fracture behavior of layered NiAl/V composites. Fatigue damage mechanisms of bridging fibers in titanium metal matrix composites

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.