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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Rate-Dependence of Tensile Properties And Stress-Strain Behavior of an Oxide/ Oxide Ceramic Matrix Composite at Elevated Temperature and the Effects o

Rate-Dependence of Tensile Properties And Stress-Strain Behavior of an Oxide/ Oxide Ceramic Matrix Composite at Elevated Temperature and the Effects o

Radzicki, Andrew T.

Paperback

Technology & EngineeringGeneral EducationPhysics

ISBN10: 1249841682
ISBN13: 9781249841685
Publisher: Biblioscholar
Published: Oct 17 2012
Pages: 72
Weight: 0.25
Height: 0.15 Width: 6.14 Depth: 9.21
Language: English
Advanced aerospace structures and components require materials that exhibit high strength at high operating temperatures. Nextel 720/Alumina (N720/A) is an oxide/oxide, porous-matrix ceramic-matrix composite developed for load bearing applications at elevated temperatures. The current research investigates the rate dependence of tensile properties of the N720/A CMC at 1200-C as well as the creep behavior of this composite under applied stresses in the 1-25 MPa range. In addition, influence of prior loading rate on the creep response of N720/A under applied stresses above 50 MPa was evaluated at 1200-C. Tensile tests conducted at loading rate of 0.0025 and 25 MPa/s revealed a strong influence of rate on the ultimate tensile strength, elastic modulus and failure strain. Several samples subjected to additional heat-treatments were tested to ascertain whether the stress-strain behavior observed in the 0-30 MPa stress range in tests conducted at 0.0025 MPa/s was an artifact of incomplete processing of fibers in the as-received material. Additional heat treatment had no effect on stress-strain behavior at 0.0025 MPa/s.

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