Fatigue Behavior Of An Advanced Sic Sic Composite With An Oxidation Inhibited Matrix At 1200 Deg C In Air And In Steam

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Fatigue Behavior of an Advanced SiC/SiC Composite with an Oxidation Inhibited Matrix at 1200 Deg C in Air and in Steam

Author :
Publisher :
ISBN 13 :
Total Pages : 201 pages
Book Rating : 4.:/5 (64 download)

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Book Synopsis Fatigue Behavior of an Advanced SiC/SiC Composite with an Oxidation Inhibited Matrix at 1200 Deg C in Air and in Steam by :

Download or read book Fatigue Behavior of an Advanced SiC/SiC Composite with an Oxidation Inhibited Matrix at 1200 Deg C in Air and in Steam written by and published by . This book was released on 2010 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fatigue behavior of an advanced Silicon Carbide/Silcon (SiC/SiC) ceramic matrix composite (CMC) with oxidation inhibited matrix was investigated at 1200 deg C in laboratory air and in steam environments. The composite consisted of an oxidation inhibited SiC matrix reinforced with Hi-Nicalon fibers coated with pyrolytic carbon (PyC) with a boron carbide overlay woven into eight-harness-satin (8HS) weave plies. Tensile stress-strain behavior and tensile properties were evaluated at 1200?C. Tension-tension fatigue tests were conducted in both laboratory air and in steam at 1200 deg C at frequencies of 0.1 Hz, 1.0 Hz, and 10 Hz. The tension-tension fatigue tests had a ratio of minimum stress to maximum stress of R = 0.05, with maximum stresses ranging from 100 to 140 MPa in air and in steam. Fatigue run-out was defined as 105 cycles for the 0.1 Hz tests and as 2 x 105 cycles for the 1.0 Hz and 10 Hz tests. Strain accumulation with cycles and modulus evolution with cycles were analyzed for each fatigue test. The presence of steam degraded the fatigue resistance of the material at 0.1 Hz and 10 Hz. At 1.0 Hz, the presence of steam appeared to have little influence on the fatigue resistance for the fatigue stress levels

Fatigue Behavior of an Advanced SIC/SIC Composite with an Oxidation Inhibited Matrix at 1200°C in Air and in Steam

Author : Jacob Delapasse
Publisher :
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.:/5 (647 download)

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Book Synopsis Fatigue Behavior of an Advanced SIC/SIC Composite with an Oxidation Inhibited Matrix at 1200°C in Air and in Steam by : Jacob Delapasse

Download or read book Fatigue Behavior of an Advanced SIC/SIC Composite with an Oxidation Inhibited Matrix at 1200°C in Air and in Steam written by Jacob Delapasse and published by . This book was released on 2010 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fatigue Behavior of an Advanced SiC/SiC Composite at Elevated Temperature in Air and in Steam

Author : Devon T. Christensen
Publisher :
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.:/5 (654 download)

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Book Synopsis Fatigue Behavior of an Advanced SiC/SiC Composite at Elevated Temperature in Air and in Steam by : Devon T. Christensen

Download or read book Fatigue Behavior of an Advanced SiC/SiC Composite at Elevated Temperature in Air and in Steam written by Devon T. Christensen and published by . This book was released on 2009 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Notch Sensitivity of Fatigue Behavior of a Hi-Nicalon/SiC Ceramic Composite with an Oxidation Inhibited Matrix at 1200°C in Air and in Steam

Download Notch Sensitivity of Fatigue Behavior of a Hi-Nicalon/SiC Ceramic Composite with an Oxidation Inhibited Matrix at 1200°C in Air and in Steam PDF Online Free

Author : Garrett Kurtz
Publisher :
ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.:/5 (755 download)

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Book Synopsis Notch Sensitivity of Fatigue Behavior of a Hi-Nicalon/SiC Ceramic Composite with an Oxidation Inhibited Matrix at 1200°C in Air and in Steam by : Garrett Kurtz

Download or read book Notch Sensitivity of Fatigue Behavior of a Hi-Nicalon/SiC Ceramic Composite with an Oxidation Inhibited Matrix at 1200°C in Air and in Steam written by Garrett Kurtz and published by . This book was released on 2011 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Effects of Temperature and Steam Environment on Fatigue Behavior of Three SIC/SIC Ceramic Matrix Composites

Author : Vipul Sharma
Publisher :
ISBN 13 :
Total Pages : 408 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Effects of Temperature and Steam Environment on Fatigue Behavior of Three SIC/SIC Ceramic Matrix Composites by : Vipul Sharma

Download or read book Effects of Temperature and Steam Environment on Fatigue Behavior of Three SIC/SIC Ceramic Matrix Composites written by Vipul Sharma and published by . This book was released on 2008 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Effect of Temperature and Steam Environment on Fatigue Behavior of an Oxide-oxide Continuous Fiber Ceramic Composite

Author : Chalene A. Eber
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (671 download)

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Book Synopsis Effect of Temperature and Steam Environment on Fatigue Behavior of an Oxide-oxide Continuous Fiber Ceramic Composite by : Chalene A. Eber

Download or read book Effect of Temperature and Steam Environment on Fatigue Behavior of an Oxide-oxide Continuous Fiber Ceramic Composite written by Chalene A. Eber and published by . This book was released on 2005 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fatigue Behavior of a SiC/SiC Composite at 1000°C in Air and Steam

Author : Michael Knauf
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (713 download)

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Book Synopsis Fatigue Behavior of a SiC/SiC Composite at 1000°C in Air and Steam by : Michael Knauf

Download or read book Fatigue Behavior of a SiC/SiC Composite at 1000°C in Air and Steam written by Michael Knauf and published by . This book was released on 2010 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Effects of Frequency and Environment on Fatigue Behavior of an Oxide-Oxide Ceramic Matrix Composite at 1200 Deg. C.

Author :
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Effects of Frequency and Environment on Fatigue Behavior of an Oxide-Oxide Ceramic Matrix Composite at 1200 Deg. C. by :

Download or read book Effects of Frequency and Environment on Fatigue Behavior of an Oxide-Oxide Ceramic Matrix Composite at 1200 Deg. C. written by and published by . This book was released on 2006 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in aeronautical engineering in the 21st century depend upon materials that can perform well in extreme environments such as high temperatures and oxidizing conditions. Nextel(Trademark)720/Alumina (N720/A) is an oxide/oxide ceramic matrix composite with a porous alumina matrix that has been identified as a candidate material for such applications. This research investigated the effects of frequency on fatigue response of N720/A at 1200C in both air and steam environment. Prior investigation of this material by Eber [8] in 2005 studied fatigue behavior at 1200C in air and in steam environments at the frequency of 1.0 Hz. The current research focused on fatigue response at the frequencies of 0.1 Hz and 10 Hz. Results of mechanical testing showed a significant decrease in fatigue performance in steam versus air. Specimens tested at 0.1 Hz exhibited shorter fatigue lives and smaller strains at failure than those tested at 10 Hz. Scanning Electron Micrographs of specimen fracture surfaces revealed higher degrees of fiber pull-out and greater variation in fiber failure locations in specimens tested at 10 Hz, indicating a weakening of the fiber/matrix interface. Qualitative assessment using Energy Dispersive Spectroscopy showed correlations between frequency and amount of silicon species migration between fiber and matrix.

Oxidation of Continuous Carbon Fibers Within a Silicon Carbide Matrix Under Stressed and Unstressed Conditions

Author : Michael C. Halbig
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Oxidation of Continuous Carbon Fibers Within a Silicon Carbide Matrix Under Stressed and Unstressed Conditions by : Michael C. Halbig

Download or read book Oxidation of Continuous Carbon Fibers Within a Silicon Carbide Matrix Under Stressed and Unstressed Conditions written by Michael C. Halbig and published by . This book was released on 2000 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon fiber reinforced silicon carbide matrix composites (C/SiC) are a ceramic matrix composite (CMC) material that offers benefits for use in a wide range of high temperature structural applications. However the susceptibility of the carbon fibers to degradation in oxidizing environments has hindered the material's use in certain applications requiring long lives under oxidizing conditions. The susceptibility of carbon fibers to oxidation will be discussed as well as the enhancement (improvement in oxidation resistance) of C/SiC materials. Thermogravimetric analysis of carbon fibers shows susceptibility to oxidation in two distinct kinetic regimes. However, in the thermogravimetric (wt. loss) analysis of unstressed, unenhanced, seal coated C/SiC coupons, the two regimes were not observed due to crack closure and matrix effects, which inhibited the oxidation process. Stressed oxidation (creep rupture) tests put the material under a stress, which is a more realistic condition for many applications. In stressed oxidation tests, the two oxidation kinetics regimes were observed. These tests can provide better insight into how the material will perform in applications involving stress. Stressed oxidation of enhanced materials containing oxidation inhibitors showed significantly improved lives at the specific test conditions considered, although there was susceptibility to oxidation at intermediate temperatures.

High Temperature Mechanical Behavior of Ceramic-Matrix Composites

Author : Longbiao Li
Publisher : John Wiley & Sons
ISBN 13 : 3527349030
Total Pages : 386 pages
Book Rating : 4.5/5 (273 download)

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Book Synopsis High Temperature Mechanical Behavior of Ceramic-Matrix Composites by : Longbiao Li

Download or read book High Temperature Mechanical Behavior of Ceramic-Matrix Composites written by Longbiao Li and published by John Wiley & Sons. This book was released on 2021-07-06 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Temperature Mechanical Behavior of Ceramic-Matrix Composites Covers the latest research on the high-temperature mechanical behavior of ceramic-matrix composites Due to their high temperature resistance, strength and rigidity, relatively light weight, and corrosion resistance, ceramic-matrix composites (CMCs) are widely used across the aerospace and energy industries. As these advanced composites of ceramics and various fibers become increasingly important in the development of new materials, understanding the high-temperature mechanical behavior and failure mechanisms of CMCs is essential to ensure the reliability and safety of practical applications. High Temperature Mechanical Behavior of Ceramic-Matrix Composites examines the behavior of CMCs at elevated temperature—outlining the latest developments in the field and presenting the results of recent research on different CMC characteristics, material properties, damage states, and temperatures. This up-to-date resource investigates the high-temperature behavior of CMCs in relation to first matrix cracking, matrix multiple cracking, tensile damage and fracture, fatigue hysteresis loops, stress-rupture, vibration damping, and more. This authoritative volume: Details the relationships between various high-temperature conditions and experiment results Features an introduction to the tensile, vibration, fatigue, and stress-rupture behavior of CMCs at elevated temperatures Investigates temperature- and time-dependent cracking stress, deformation, damage, and fracture of fiber-reinforced CMCs Includes full references and internet links to source material Written by a leading international researcher in the field, High Temperature Mechanical Behavior of Ceramic-Matrix Composites is an invaluable resource for materials scientists, surface chemists, organic chemists, aerospace engineers, and other professionals working with CMCs.

Thermomechanical Fatigue of Ceramic-Matrix Composites

Author : Longbiao Li
Publisher : John Wiley & Sons
ISBN 13 : 3527822593
Total Pages : 636 pages
Book Rating : 4.5/5 (278 download)

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Book Synopsis Thermomechanical Fatigue of Ceramic-Matrix Composites by : Longbiao Li

Download or read book Thermomechanical Fatigue of Ceramic-Matrix Composites written by Longbiao Li and published by John Wiley & Sons. This book was released on 2019-07-30 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Guides researchers and practitioners toward developing highly reliable ceramic-matrix composites The book systematically introduces the thermomechanical fatigue behavior of fiber-reinforced ceramic-matrix composites (CMCs) and environmental barrier coatings, including cyclic loading/unloading tensile behavior, cyclic fatigue behavior, dwell-fatigue behavior, thermomechanical fatigue behavior, and interface degradation behavior. It discusses experimental verification of CMCs and explains how to determine the thermomechanical properties. It also presents damage evolution models, lifetime prediction methods, and interface degradation rules. Thermomechanical Fatigue of Ceramic-Matrix Composites offers chapters covering unidirectional ceramic-matrix composites and cross-ply and 2D woven ceramic-matrix composites. For cyclic fatigue behavior of CMCs, it looks at the effects of fiber volume fraction, fatigue peak stress, fatigue stress ratio, matrix crack spacing, matrix crack mode, and woven structure on fatigue damage evolution. Both the Dwell-fatigue damage evolution and lifetime predictions models are introduced in the next chapter. Experimental comparisons of the cross-ply SiC/MAS composite, 2D SiC/SiC composite, and 2D NextelTM 720/Alumina composite are also included. Remaining sections examine: thermomechanical fatigue hysteresis loops; in-phase thermomechanical fatigue damage; out-of-phase thermomechanical fatigue; interface degradation models; and much more. -Offers unique content dedicated to thermomechanical fatigue behavior of ceramic-matrix composites (CMCs) and environmental barrier coatings -Features comprehensive data tables and experimental verifications -Covers a highly application-oriented subject?CMCs are being increasingly utilized in jet engines, industrial turbines, and exhaust systems Thermomechanical Fatigue of Ceramic-Matrix Composites is an excellent book for developers and users of CMCs, as well as organizations involved in evaluation and characterization of CMCs. It will appeal to materials scientists, construction engineers, process engineers, and mechanical engineers.

Tension-compression Fatigue of Hi-Nicalon/SiC Ceramic Matrix Composite at 1200°C in Air and in Steam

Author : Tyler Jones
Publisher :
ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.:/5 (755 download)

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Book Synopsis Tension-compression Fatigue of Hi-Nicalon/SiC Ceramic Matrix Composite at 1200°C in Air and in Steam by : Tyler Jones

Download or read book Tension-compression Fatigue of Hi-Nicalon/SiC Ceramic Matrix Composite at 1200°C in Air and in Steam written by Tyler Jones and published by . This book was released on 2011 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Comparison of Dynamic Fatigue Behavior Between SiC Whisker-Reinforced Composite and Monolithic Silicon Nitrides

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781725576025
Total Pages : 38 pages
Book Rating : 4.5/5 (76 download)

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Book Synopsis Comparison of Dynamic Fatigue Behavior Between SiC Whisker-Reinforced Composite and Monolithic Silicon Nitrides by : National Aeronautics and Space Administration (NASA)

Download or read book Comparison of Dynamic Fatigue Behavior Between SiC Whisker-Reinforced Composite and Monolithic Silicon Nitrides 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 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dynamic fatigue behavior of 30 vol percent silicon nitride whisker-reinforced composite and monolithic silicon nitrides were determined as a function of temperature from 1100 to 1300 C in ambient air. The fatigue susceptibility parameter, n, decreased from 88.1 to 20.1 for the composite material, and from 50.8 to 40.4 for the monolithic, with increasing temperature from 1100 to 1300 C. A transition in the dynamic fatigue curve occurred for the composite material at a low stressing rate of 2 MPa/min at 1300 C, resulting in a very low value of n equals 5.8. Fractographic analysis showed that glassy phases in the slow crack growth region were more pronounced in the composite compared to the monolithic material, implying that SiC whisker addition promotes the formation of glass rich phases at the grain boundaries, thereby enhancing fatigue. These results indicate that SiC whisker addition to Si3 N4 matrix substantially deteriorates fatigue resistance inherent to the matrix base material for this selected material system. Choi, Sung R. and Salem, Jonathan A. Glenn Research Center NASA-TM-103707, E-5932, NAS 1.15:103707 RTOP 505-63-1M...

Tensile and Fatigue Behavior of a SiC

Author :
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (683 download)

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Book Synopsis Tensile and Fatigue Behavior of a SiC by :

Download or read book Tensile and Fatigue Behavior of a SiC written by and published by . This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monotonic and fatigue properties of a SiC/SiC composite were studied at 1,300 C in tension. All tests were conducted in nitrogen (N2) to eliminate oxidation. Because of the composite architecture and the differences between matrix and fiber properties, the composite failure under both monotonic and cyclic loads took place in stages. In a monotonic test, the composite failure occurred by the creep of bridging fibers, and thus, fibers displayed nonbrittle fracture features. In fatigue tests, although creep was also occurring under cyclic loads, the fracture surface analysis showed that final fracture took place in a brittle manner.

Effects of Frequency and Environment on Fatigue Behavior of an Oxide-oxide Ceramic Matrix Composite at 1200°C

Author : Griffin Hetrick
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.:/5 (122 download)

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Book Synopsis Effects of Frequency and Environment on Fatigue Behavior of an Oxide-oxide Ceramic Matrix Composite at 1200°C by : Griffin Hetrick

Download or read book Effects of Frequency and Environment on Fatigue Behavior of an Oxide-oxide Ceramic Matrix Composite at 1200°C written by Griffin Hetrick and published by . This book was released on 2006 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Isothermal Fatigue Behavior of a Unidirectional SiC/Ti Composite and the Ti Alloy Matrix

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722870355
Total Pages : 36 pages
Book Rating : 4.8/5 (73 download)

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Book Synopsis The Isothermal Fatigue Behavior of a Unidirectional SiC/Ti Composite and the Ti Alloy Matrix by : National Aeronautics and Space Administration (NASA)

Download or read book The Isothermal Fatigue Behavior of a Unidirectional SiC/Ti Composite and the Ti Alloy Matrix written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-13 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high temperature fatigue behavior of a metal matrix composite (MMC) consisting of Ti-15V-3Cr-3Al-3Sn (Ti-15-3) matrix reinforced by 33 vol percent of continuous unidirectional SiC fibers was experimentally and analytically evaluated. Isothermal MMC fatigue tests with constant amplitude loading parallel to the fiber direction were performed at 300 and 550 C. Comparative fatigue tests of the Ti-15-3 matrix alloy were also conducted. Composite fatigue behavior and the in-situ stress state of the fiber and matrix were analyzed with a micromechanical model, the Concentric Cylinder Model (CCM). The cyclic stress-strain response of the composite was stable at 300 C. However, an increase in cyclic mean strain foreshortened MMC fatigue life at high strain ranges at 550 C. Fatigue tests of the matrix alloy and CCM analyses indicated this response was associated with stress relaxation of the matrix in the composite. Gayda, John, Jr. and Gabb, Timothy P. and Freed, Alan D. Glenn Research Center RTOP 505-63-1A...

Monotonic and Fatigue Loading Behavior of an Oxide/Oxide Ceramic Matrix Composite

Author : Steven G. Steel
Publisher :
ISBN 13 : 9781423536376
Total Pages : 134 pages
Book Rating : 4.5/5 (363 download)

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Book Synopsis Monotonic and Fatigue Loading Behavior of an Oxide/Oxide Ceramic Matrix Composite by : Steven G. Steel

Download or read book Monotonic and Fatigue Loading Behavior of an Oxide/Oxide Ceramic Matrix Composite written by Steven G. Steel and published by . This book was released on 2000-03-01 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis evaluates an oxide/oxide ceramic matrix composite, N720/ A, for high temperature aerospace applications. The composite consists of a porous alumina matrix reinforced by ten plies of Nextel 720 fibers in a balanced 8 harness satin weave. Monotonic tensile and fatigue tests were performed at room temperature and 1200 C. The effect of moisture on 1200 C fatigue life was also examined. Modulus, maximum and minimum strain, and stress-strain hysteresis were monitored to characterized fatigue damage. Retained strength of all specimens that survived 100000 fatigue cycles was tested. Microscopy and fractography were used to examine damage and fracture surfaces. N720/A was found to have good room temperature properties. At room temperature the ultimate tensile strength was 144 MPa and fatigue strength was 102 MPa. Fatigue damage involved mainly matrix cracking with no fiber-matrix debonding. At 1200 C the ultimate strength was 140 MPa and fatigue strength was 122 MPa. Fatigue damage was similar to room temperature with the addition of creep in the fibers. Exposure to moisture did not degrade fatigue performance. N720/A appears to be an excellent candidate for 1200 C applications with exposure to moisture.