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Creep And Rupture Strength Of An Advanced Cvd Sic Fiber
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781725626287 Total Pages :26 pages Book Rating :4.6/5 (262 download)
Book Synopsis Creep and Rupture Strength of an Advanced CVD SiC Fiber by : National Aeronautics and Space Administration (NASA)
Download or read book Creep and Rupture Strength of an Advanced CVD SiC Fiber written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the as-produced condition the room temperature strength (approx. 6 GPa) of Textron Specialty Materials' 50 microns CVD SiC fiber represents the highest value thus far obtained for commercially produced polycrystalline SiC fibers. To understand whether this strength can be maintained after composite processing conditions, high temperature studies were performed on the effects of time, stress, and environment on 1400 deg. C tensile creep strain and stress rupture on as-produced, chemically vapor deposited SiC fibers. Creep strain results were consistent, allowing an evaluation of time and stress effects. Test environment had no influence on creep strain but I hour annealing at 1600 deg. C in argon gas significantly reduced the total creep strain and increased the stress dependence. This is attributed to changes in the free carbon morphology and its distribution within the CVD SiC fiber. For the as-produced and annealed fibers, strength at 1400 deg. C was found to decrease from a fast fracture value of 2 GPa to a 100-hr rupture strength value of 0. 8 GPa. In addition a loss of fast fracture strength from 6 GPa is attributed to thermally induced changes in the outer carbon coating and microstructure. Scatter in rupture times made a definitive analysis of environmental and annealing effects on creep strength difficult. Goldsby, J. C. and Yun, H. M. and DiCarlo, J. A. Glenn Research Center NASA-TM-107368, NAS 1.15:107368, E-10536 RTOP 505-63-12...
Book Synopsis Creep and Rupture Strength of an Advanced CVD SiC Fiber by :
Download or read book Creep and Rupture Strength of an Advanced CVD SiC Fiber written by and published by . This book was released on 1997 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Creep and Rupture Strength of an Advanced CVD SiC Fiber by : Jon C. Goldsby
Download or read book Creep and Rupture Strength of an Advanced CVD SiC Fiber written by Jon C. Goldsby and published by . This book was released on 1997 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Time/Temperature Dependent Tensile Strength of SiC and Al2O3-Based Fibers by : Hee Mann Yun
Download or read book Time/Temperature Dependent Tensile Strength of SiC and Al2O3-Based Fibers written by Hee Mann Yun and published by . This book was released on 1997 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tensile Creep and Stress-rupture Behavior of Polymer Derived SiC Fibers by :
Download or read book Tensile Creep and Stress-rupture Behavior of Polymer Derived SiC Fibers written by and published by . This book was released on 1994 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of the Tensile, Creep, and Rupture Strength Properties of Stoichiometric SiC Fibers by : Hee Mann Yun
Download or read book Comparison of the Tensile, Creep, and Rupture Strength Properties of Stoichiometric SiC Fibers written by Hee Mann Yun and published by . This book was released on 1999 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Committee on Advanced Fibers for High-Temperature Ceramic Composites Publisher :National Academies Press ISBN 13 :0309569036 Total Pages :112 pages Book Rating :4.3/5 (95 download)
Book Synopsis Ceramic Fibers and Coatings by : Committee on Advanced Fibers for High-Temperature Ceramic Composites
Download or read book Ceramic Fibers and Coatings written by Committee on Advanced Fibers for High-Temperature Ceramic Composites and published by National Academies Press. This book was released on 1998-05-05 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-temperature ceramic fibers are the key components of ceramic matrix composites (CMCs). Ceramic fiber properties (strength, temperature and creep resistance, for example)-along with the debonding characteristics of their coatings-determine the properties of CMCs. This report outlines the state of the art in high-temperature ceramic fibers and coatings, assesses fibers and coatings in terms of future needs, and recommends promising avenues of research. CMCs are also discussed in this report to provide a context for discussing high-temperature ceramic fibers and coatings.
Book Synopsis 20th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B, Volume 17, Issue 4 by : John B. Wachtman
Download or read book 20th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B, Volume 17, Issue 4 written by John B. Wachtman and published by John Wiley & Sons. This book was released on 2009-09-28 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Effects of Thermal Treatment on Tensile Creep and Stress-rupture Behavior of Hi-Nicalon SiC Fibers by : Hee Mann Yun
Download or read book Effects of Thermal Treatment on Tensile Creep and Stress-rupture Behavior of Hi-Nicalon SiC Fibers written by Hee Mann Yun and published by . This book was released on 1995 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ceramic Fibers and Coatings by : National Research Council
Download or read book Ceramic Fibers and Coatings written by National Research Council and published by National Academies Press. This book was released on 1998-04-21 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-temperature ceramic fibers are the key components of ceramic matrix composites (CMCs). Ceramic fiber properties (strength, temperature and creep resistance, for example)-along with the debonding characteristics of their coatings-determine the properties of CMCs. This report outlines the state of the art in high-temperature ceramic fibers and coatings, assesses fibers and coatings in terms of future needs, and recommends promising avenues of research. CMCs are also discussed in this report to provide a context for discussing high-temperature ceramic fibers and coatings.
Book Synopsis Ceramic Fibers and Coatings by : National Research Council
Download or read book Ceramic Fibers and Coatings written by National Research Council and published by National Academies Press. This book was released on 1998-05-21 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-temperature ceramic fibers are the key components of ceramic matrix composites (CMCs). Ceramic fiber properties (strength, temperature and creep resistance, for example)-along with the debonding characteristics of their coatings-determine the properties of CMCs. This report outlines the state of the art in high-temperature ceramic fibers and coatings, assesses fibers and coatings in terms of future needs, and recommends promising avenues of research. CMCs are also discussed in this report to provide a context for discussing high-temperature ceramic fibers and coatings.
Book Synopsis Plastic Deformation of Ceramics by : R.C. Bradt
Download or read book Plastic Deformation of Ceramics written by R.C. Bradt and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume, "Plastic Deformation of Ceramics," constitutes the papers of an international symposium held at Snowbird, Utah from August 7-12, 1994. It was attended by nearly 100 scientists and engineers from more than a dozen countries representing academia, national laboratories, and industry. Two previous conferences on this topic were held at The Pennsylvania State University in 1974 and 1983. Therefore, the last major international conference focusing on the deformation of ceramic materials was held more than a decade ago. Since the early 1980s, ceramic materials have progressed through an evolutionary period of development and advancement. They are now under consideration for applications in engineering structures. The contents of the previous conferences indicate that considerable effort was directed towards a basic understanding of deformation processes in covalently bonded or simple oxide ceramics. However, now, more than a decade later, the focus has completely shifted. In particular, the drive for more efficient heat engines has resulted in the development of silicon-based ceramics and composite ceramics. The discovery of high-temperature cupric oxide-based superconductors has created a plethora of interesting perovskite-Iike structured ceramics. Additionally, nanophase ceramics, ceramic thin films, and various forms of toughened ceramics have potential applications and, hence, their deformation has been investigated. Finally, new and exciting areas of research have attracted interest since 1983, including fatigue, nanoindentation techniques, and superplasticity.
Book Synopsis Environmental Effects on the Tensile Strength of Chemically Vapor Deposited Silicon Carbide Fibers by :
Download or read book Environmental Effects on the Tensile Strength of Chemically Vapor Deposited Silicon Carbide Fibers written by and published by . This book was released on 1985 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The room temperature and elevated temperature tensile strengths of commercially available chemically vapor-deposited silicon carbide fibers were measured after 15 min heat treatment to 1600 C in various environments. These environments included oxygen, air, argon and nitrogen at one atmosphere and vacuum at 10 to the minus 9th power atmosphere. Two types of fibers were examined which differed in the SiC content of their carbon-rich coatings. Threshold temperature for fiber strength degradation was observed to be dependent on the as-received fiber-flaw structure, on the environment and on the coating. Fractographic analyses and flexural strength measurements indicate that tensile strength losses were caused by surface degradation. Oxidation of the surface coating is suggested as one possible degradation mechanism. In general, the SiC fibers containing the higher percentage of SiC near the surface of the carbon rich coating showed better strength retention and higher elevated temperature strength. (Author).
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781725632714 Total Pages :34 pages Book Rating :4.6/5 (327 download)
Book Synopsis Environmental Effects on the Tensile Strength of Chemically Vapor Deposited Silicon Carbide Fibers by : National Aeronautics and Space Administration (NASA)
Download or read book Environmental Effects on the Tensile Strength of Chemically Vapor Deposited Silicon Carbide Fibers written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The room temperature and elevated temperature tensile strengths of commercially available chemically vapor-deposited (CVD) silicon carbide fibers were measured after 15 min heat treatment to 1600 C in various environments. These environments included oxygen, air, argon and nitrogen at one atmosphere and vacuum at 10/9 atmosphere. Two types of fibers were examined which differed in the SiC content of their carbon-rich coatings. Threshold temperature for fiber strength degradation was observed to be dependent on the as-received fiber-flaw structure, on the environment and on the coating. Fractographic analyses and flexural strength measurements indicate that tensile strength losses were caused by surface degradation. Oxidation of the surface coating is suggested as one possible degradation mechanism. The SiC fibers containing the higher percentage of SiC near the surface of the carbon-rich coating show better strength retention and higher elevated temperature strength. Bhatt, R. T. and Kraitchman, M. D. Glenn Research Center NASA-TM-86981, E-2519, NAS 1.15:86981, USAAVSCOM-TR-85-C-4, AD-A157111 RTOP 533-05-12...
Book Synopsis Microstructural and Strength Stability of a Developmental CVD SiC Fiber by : Ramakrishna T. Bhatt
Download or read book Microstructural and Strength Stability of a Developmental CVD SiC Fiber written by Ramakrishna T. Bhatt and published by . This book was released on 1995 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B, Volume 21, Issue 4 by : Todd Jessen
Download or read book 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B, Volume 21, Issue 4 written by Todd Jessen and published by John Wiley & Sons. This book was released on 2009-09-28 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis 26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A, Volume 23, Issue 3 by : Hua-Tay Lin
Download or read book 26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A, Volume 23, Issue 3 written by Hua-Tay Lin and published by John Wiley & Sons. This book was released on 2009-09-28 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
