Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781792848780
Category :
Languages : en
Pages : 30
Book Description
Strong, tough and almost fully dense Hi-Nicalon/BN/SiC fiber reinforced celsian matrix composites have been fabricated by impregnation of the fiber tows with the matrix slurry, winding on a drum, stacking the prepreg tapes in the desired orientation, and hot pressing. The monoclinic celsian phase in the matrix was produced in situ, during hot pressing, from a mixed oxide precursor. The unidirectional composites having approx. 42 volume percent of fibers exhibited graceful failure with extensive fiber pullout in three-point bend tests at room temperature. Values of first matrix cracking stress and strain were 435 +/- 35 MPa and 0.27 +/- 0.01 %, respectively, and ultimate strengths of 900 +/- 60 MPa were observed. The Young's modulus of the composites was 165 +/- 5 GPa. Bansal, Narottam P. Glenn Research Center NASA-TM-107410, NAS 1.15:107410, E-10639 RTOP 523-21-13...
Strong and Tough Hi-Nicalon Fiber-Reinforced Celsian Matrix Composites
Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781792848780
Category :
Languages : en
Pages : 30
Book Description
Strong, tough and almost fully dense Hi-Nicalon/BN/SiC fiber reinforced celsian matrix composites have been fabricated by impregnation of the fiber tows with the matrix slurry, winding on a drum, stacking the prepreg tapes in the desired orientation, and hot pressing. The monoclinic celsian phase in the matrix was produced in situ, during hot pressing, from a mixed oxide precursor. The unidirectional composites having approx. 42 volume percent of fibers exhibited graceful failure with extensive fiber pullout in three-point bend tests at room temperature. Values of first matrix cracking stress and strain were 435 +/- 35 MPa and 0.27 +/- 0.01 %, respectively, and ultimate strengths of 900 +/- 60 MPa were observed. The Young's modulus of the composites was 165 +/- 5 GPa. Bansal, Narottam P. Glenn Research Center NASA-TM-107410, NAS 1.15:107410, E-10639 RTOP 523-21-13...
Publisher: Independently Published
ISBN: 9781792848780
Category :
Languages : en
Pages : 30
Book Description
Strong, tough and almost fully dense Hi-Nicalon/BN/SiC fiber reinforced celsian matrix composites have been fabricated by impregnation of the fiber tows with the matrix slurry, winding on a drum, stacking the prepreg tapes in the desired orientation, and hot pressing. The monoclinic celsian phase in the matrix was produced in situ, during hot pressing, from a mixed oxide precursor. The unidirectional composites having approx. 42 volume percent of fibers exhibited graceful failure with extensive fiber pullout in three-point bend tests at room temperature. Values of first matrix cracking stress and strain were 435 +/- 35 MPa and 0.27 +/- 0.01 %, respectively, and ultimate strengths of 900 +/- 60 MPa were observed. The Young's modulus of the composites was 165 +/- 5 GPa. Bansal, Narottam P. Glenn Research Center NASA-TM-107410, NAS 1.15:107410, E-10639 RTOP 523-21-13...
Strong and Tough Hi-Nicalon Fiber-Reinforced Celsian Matrix Composites
High Temperature Tensile Properties of Unidirectional Hi-Nicalon/Celsian Composites In Air
Author: John Z. Gyekenyesi
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
Book Description
High temperature tensile properties of unidirectional BN/SiC-coated Hi-Nicalon SiC fiber reinforced celsian matrix composites have been measured from room temperature to 1200 C (2190 F) in air. Young's modulus, the first matrix cracking stress, and the ultimate strength decreased from room temperature to 1200 C (2190 F). The applicability of various micromechanical models, in predicting room temperature values of various mechanical properties for this CMC, has also been investigated. The simple rule of mixtures produced an accurate estimate of the primary composite modulus. The first matrix cracking stress estimated from ACK theory was in good agreement with the experimental value. The modified fiber bundle failure theory of Evans gave a good estimate of the ultimate strength.
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
Book Description
High temperature tensile properties of unidirectional BN/SiC-coated Hi-Nicalon SiC fiber reinforced celsian matrix composites have been measured from room temperature to 1200 C (2190 F) in air. Young's modulus, the first matrix cracking stress, and the ultimate strength decreased from room temperature to 1200 C (2190 F). The applicability of various micromechanical models, in predicting room temperature values of various mechanical properties for this CMC, has also been investigated. The simple rule of mixtures produced an accurate estimate of the primary composite modulus. The first matrix cracking stress estimated from ACK theory was in good agreement with the experimental value. The modified fiber bundle failure theory of Evans gave a good estimate of the ultimate strength.
SiC Fiber-Reinforced Celsian Composites
In-Plane and Interlaminar Shear Strength of a Unidirectional Hi-Nicalon Fiber-Reinforced Celsian Matrix Composite
Fabrication of Fiber-Reinforced Celsian Matrix Composites
High Temperature Tensile Properties of Unidirectional Hi-Nicalon/Celsian Composites in Air
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721213511
Category :
Languages : en
Pages : 36
Book Description
High temperature tensile properties of unidirectional BN/SiC-coated Hi-Nicalon SiC fiber reinforced celsian matrix composites have been measured from room temperature to 1200 C (2190 F) in air. Young's modulus, the first matrix cracking stress, and the ultimate strength decreased from room temperature to 1200 C (2190 F). The applicability of various micromechanical models, in predicting room temperature values of various mechanical properties for this CMC, has also been investigated. The simple rule of mixtures produced an accurate estimate of the primary composite modulus. The first matrix cracking stress estimated from ACK theory was in good agreement with the experimental value. The modified fiber bundle failure theory of Evans gave a good estimate of the ultimate strength. Gyekenyesi, John Z. and Bansal, Narottam P. Glenn Research Center NASA/TM-2000-210214, NAS 1.15:210214, E-12333
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721213511
Category :
Languages : en
Pages : 36
Book Description
High temperature tensile properties of unidirectional BN/SiC-coated Hi-Nicalon SiC fiber reinforced celsian matrix composites have been measured from room temperature to 1200 C (2190 F) in air. Young's modulus, the first matrix cracking stress, and the ultimate strength decreased from room temperature to 1200 C (2190 F). The applicability of various micromechanical models, in predicting room temperature values of various mechanical properties for this CMC, has also been investigated. The simple rule of mixtures produced an accurate estimate of the primary composite modulus. The first matrix cracking stress estimated from ACK theory was in good agreement with the experimental value. The modified fiber bundle failure theory of Evans gave a good estimate of the ultimate strength. Gyekenyesi, John Z. and Bansal, Narottam P. Glenn Research Center NASA/TM-2000-210214, NAS 1.15:210214, E-12333
Effects of Interface Modification on Mechanical Behavior of Hi-nicalon Fiber-reinforced Celsian Matrix Composites
Author: Narottam P. Bansal
Publisher:
ISBN:
Category : Ceramics
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Ceramics
Languages : en
Pages :
Book Description
Raman Study of Uncoated and P-BN/SiC-Coated Hi-Nicalon Reinforced Celsian Matrix Composites
21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A, Volume 18, Issue 3
Author: J. P. Singh
Publisher: John Wiley & Sons
ISBN: 0470294922
Category : Technology & Engineering
Languages : en
Pages : 812
Book Description
This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Publisher: John Wiley & Sons
ISBN: 0470294922
Category : Technology & Engineering
Languages : en
Pages : 812
Book Description
This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.