Interface characterization and fracture of calcium aluminosilicate glass-ceramic reinforced with nicalon fibres

Bleay, Stephen M.; Scott, V. D.; Harris, B.; Cooke, R.G.; Habib, Faisal

doi:10.1007/bf00540709

Cited by 30 publications

(1 citation statement)

References 16 publications

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“…Although the nature of the matrix material was not investigated in this study, a previous study 12 of cross-ply material from the same source had shown it to be almost entirely anorthite (Ca 2 Al 2 Si 2 O 8 ) with a small quantity of alumina particles and very fine zirconia particles. The first plate had a (±45°) 3s configuration and the second a plain-weave woven structure.…”

Section: Methodsmentioning

confidence: 99%

Thermal shock behaviour of angle-ply and woven dense ceramic-matrix composites

2008

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The behaviour of two Nicalon/calcium aluminosilicate ceramic composite laminates (a (±45°) 3s and a plain-weave woven) under conditions of thermal shock has been studied. Test specimens heated at various temperatures were quenched into room-temperature water. This was followed by detailed damage characterisation. In addition, post-shock mechanical properties were assessed by tensile tests (for the woven laminate) and flexural tests (for both laminates). Both materials were found to have comparable thermal shock resistance. Crack morphologies comprised matrix cracks of various orientations that exhibited similar characteristics to those described for thermally shocked cross-ply laminates with the same constituents, but cracking was found to be less widespread in the woven laminate. Fibre breaks were also detected on the woven material when high-temperature degradation of the fibre-matrix interface was present. A gradual reduction in properties (stiffness, proportional limit stress, fracture strength) of thermally shocked specimens was identified, which began at larger shocks than those at which thermal shock damage initiated. This was attributed to the extension of some matrix cracks into the bulk of material.

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Section: Methodsmentioning

confidence: 99%

Thermal shock behaviour of angle-ply and woven dense ceramic-matrix composites

2008

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Creep and creep‐fatigue behaviour of continuous fibre reinforced glass‐ceramic matrix Composites

West

Boccaccını

Taplin

1995

Materialwissenschaft Werkst

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The flexural crccp and creep strain recovery behaviour during creep-fatigue tests of a cross-ply SIC fibre reinforced Barium Magnesium Aluminosilicate glass-ceramic matrix composite was investigated at 1100°C in air. Only heat-treated samples (1 h at 1100°C) were tested. Stress levels of 90, 105 and 120 MPa were examined to produce low strains (<0.4%). A continuously decreasing creep strain rate with values between 1.6 x s-' to 4.7 X s-I at 120 MPa was observed with no steady-state regime. Extensive viscous strain recovery was found upon the unloading period during the short-duration cyclic creep (creepfatigue) experiments. The creep strain recovery was quantified using strain recovery ratios. These ratios showed a slight dependence on the stress and cyclic loading frequencies investigated.The crept composites retained their "graceful" fracture behaviour after testing indicating that no (or limited) damage in the matrix was induced during creep and creep-fatigue loading.

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Continuous Fibre Reinforced Glass and Glass-Ceramic Matrix Composites

Boccaccını

Handbook of Ceramic Composites

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Interface characterization and fracture of calcium aluminosilicate glass-ceramic reinforced with nicalon fibres

Cited by 30 publications

References 16 publications

Thermal shock behaviour of angle-ply and woven dense ceramic-matrix composites

Thermal shock behaviour of angle-ply and woven dense ceramic-matrix composites

Creep and creep‐fatigue behaviour of continuous fibre reinforced glass‐ceramic matrix Composites

Continuous Fibre Reinforced Glass and Glass-Ceramic Matrix Composites

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