STP1309: Effect of High Strain Rate on the Tensile Behavior of Nicalon™/Cas Continuous-Fiber Ceramic Composites.

    Sánchez, JM
    Research scientists and professor, Centro de Estudios e Investigaciones Técnicas de Guipúzcoa (C.E.I.T.), San Sebastián,

    Puente, I
    Research scientists, Escuela Superior de Ingenieros Industriales, Universidad de Navarra, San Sebastián,

    Elizalde, R
    Research scientists and professor, Centro de Estudios e Investigaciones Técnicas de Guipúzcoa (C.E.I.T.), San Sebastián,

    Martín, A
    Research scientists, Escuela Superior de Ingenieros Industriales, Universidad de Navarra, San Sebastián,

    Martínez, JM
    Research scientists and professor, Centro de Estudios e Investigaciones Técnicas de Guipúzcoa (C.E.I.T.), San Sebastián,

    Daniel, AM
    Research scientists and professor, Centro de Estudios e Investigaciones Técnicas de Guipúzcoa (C.E.I.T.), San Sebastián,

    Fuentes, M
    Research scientists and professor, Centro de Estudios e Investigaciones Técnicas de Guipúzcoa (C.E.I.T.), San Sebastián,

    Beesley, CP
    Manager, Rolls Royce plc, Composites and Ceramics Group, Derby,

    Pages: 15    Published: Jan 1997


    Abstract

    The tensile properties of CAS/SiC [(0/90)3]s ceramic matrix composites have been measured as a function of strain rate up to 100 s-1. Novel test methods, including the use of piezoelectric transducers as load cells, strain gauges, and high sampling rate data acquisition systems, were set up to ensure accurate measurement of load and strain. Dynamic effects were taken into account when analyzing the stress-strain raw data. It has been observed that the average fracture strength and the average strain energy density are higher with increasing strain rate. This trend is related to the mode of fracture and the damage observed in the composite at different strain rates.

    Keywords:

    Nicalon™ fibers, calcium aluminum silicate matrix, cross-ply structure, tension test, high strain rate, dynamic effects, toughness, failure mechanisms


    Paper ID: STP11811S

    Committee/Subcommittee: C28.02

    DOI: 10.1520/STP11811S


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