Thermomechanical Fatigue Of A Quasi Isotropic Metal Matrix Composite

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Thermomechanical Fatigue of a Quasi-Isotropic Metal Matrix Composite

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Author : BS. Majumdar
Publisher :
ISBN 13 :
Total Pages : 21 pages
Book Rating : 4.:/5 (125 download)

Book Synopsis Thermomechanical Fatigue of a Quasi-Isotropic Metal Matrix Composite by : BS. Majumdar

Download or read book Thermomechanical Fatigue of a Quasi-Isotropic Metal Matrix Composite written by BS. Majumdar and published by . This book was released on 1991 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: In-phase thermomechanical fatigue (TMF) and elevated temperature isothermal fatigue (IF) experiments were conducted on a [0,±45,90]s Ti 15-3/SCS6 composite under load control. A correlation was obtained between the stabilized mechanical strain range and TMF life. TMF life was found to be significantly shorter than IF life when comparisons were made either on a stress-range or a gross mechanical strain-range basis. Damage modes were investigated using optical and scanning electron microscopy. The primary damage mode in IF specimens was transverse microcracking oriented perpendicular to the loading axis. In TMF specimens, although similar damage was observed very close to the fracture surface, the primary damage modes were inter-ply delamination and fiber-matrix debonding. Limited experiments were performed where damage was monitored using a replication technique on the specimen edges. These experiments confirmed delamination and debonding in TMF as well as thermally cycled specimens. Wavelength dispersive spectroscopic (WDS) analysis showed carbon-rich zones along many ply-to-ply interfaces, and these zones may have accelerated delamination cracking. Finite element analysis indicated that the maximum delamination stress occurred at the minimum temperature in the TMF experiments. The fatigue data of Ti 15-3/SCS6 composite, from this and other investigations, were plotted in the form of 0° fiber stress range versus logarithm of fatigue life. This phenomenological plot indicated a similar trend for various data sets, but the exact mechanisms remain to be determined.

Behavior of a Quasi-isotropic Ply Metal Matrix Composite Under Thermo-mechanical and Isothermal Fatigue Loading

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Author : Karl A. Hart (CAPT, USAF.)
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.:/5 (132 download)

Book Synopsis Behavior of a Quasi-isotropic Ply Metal Matrix Composite Under Thermo-mechanical and Isothermal Fatigue Loading by : Karl A. Hart (CAPT, USAF.)

Download or read book Behavior of a Quasi-isotropic Ply Metal Matrix Composite Under Thermo-mechanical and Isothermal Fatigue Loading written by Karl A. Hart (CAPT, USAF.) and published by . This book was released on 1992 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Thermomechanical fatigue behavior of materials

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Author : Michael J. Verrilli
Publisher : ASTM International
ISBN 13 : 080312001X
Total Pages : 382 pages
Book Rating : 4.8/5 (31 download)

Book Synopsis Thermomechanical fatigue behavior of materials by : Michael J. Verrilli

Download or read book Thermomechanical fatigue behavior of materials written by Michael J. Verrilli and published by ASTM International. This book was released on 1996 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Thermomechanical Behavior of Advanced Structural Materials

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Author : American Society of Mechanical Engineers. Winter Annual Meeting
Publisher :
ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.3/5 (91 download)

Book Synopsis Thermomechanical Behavior of Advanced Structural Materials by : American Society of Mechanical Engineers. Winter Annual Meeting

Download or read book Thermomechanical Behavior of Advanced Structural Materials written by American Society of Mechanical Engineers. Winter Annual Meeting and published by . This book was released on 1993 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Role of Oxidation on the Thermo-mechanical Fatigue of Timetal 21S Matrix Composites

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Author : WS. Johnson
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (125 download)

Book Synopsis The Role of Oxidation on the Thermo-mechanical Fatigue of Timetal 21S Matrix Composites by : WS. Johnson

Download or read book The Role of Oxidation on the Thermo-mechanical Fatigue of Timetal 21S Matrix Composites written by WS. Johnson and published by . This book was released on 2000 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Isothermal fatigue tests were performed on unnotched quasi-isotropic SCS-6/Timetal 21S (Ti-15Mo-2.6Nb-3Al-0.2Si) composites at room temperature, 400°C and 500°C with various hold times (0, 1 and 10 seconds). The specimen tested at 500°C showed significant oxidation, especially along the grain boundaries. In addition, there were changes in various physical properties of the composites at elevated temperatures: oxidation, phase transformation, viscoplastic flow of matrix, and interface reaction. The measurement of oxide thickness of both with and without load indicated that the oxidation of the matrix material was more severe with applied load than without load for the same amount of exposure time. Simple spectrum loading tests were conducted to examine the effect of test temperature on the formation of oxidation and its influence on the damage accumulation in the composites. Different numbers of applied cycles per block were used: n1 and n2 = 10, 100, and 1000 cycles. The change in temperature along with stress acted as thermal cycle that further introduced damages into the composites and reduced their life. As the number of applied cycles increased, the failure life of the composites was increased. The small number of cycles per block showed a shorter life due to more frequent changes in temperature level.

Composite Materials

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Author : T. Kevin O'Brien
Publisher : ASTM International
ISBN 13 : 0803114192
Total Pages : 831 pages
Book Rating : 4.8/5 (31 download)

Book Synopsis Composite Materials by : T. Kevin O'Brien

Download or read book Composite Materials written by T. Kevin O'Brien and published by ASTM International. This book was released on 1991 with total page 831 pages. Available in PDF, EPUB and Kindle. Book excerpt:

IUTAM Symposium on Transformation Problems in Composite and Active Materials

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Author : Yehia A. Bahei-El-Din
Publisher : Springer Science & Business Media
ISBN 13 : 0306469359
Total Pages : 327 pages
Book Rating : 4.3/5 (64 download)

Book Synopsis IUTAM Symposium on Transformation Problems in Composite and Active Materials by : Yehia A. Bahei-El-Din

Download or read book IUTAM Symposium on Transformation Problems in Composite and Active Materials written by Yehia A. Bahei-El-Din and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of composite materials has seen substantial development in the past decade, New composite systems are being continually developed for various applications. Among such systems are metal, intermetallic, and superalloy matrix composites, carbon-carbon composites as well as polymer matrix composites. At the same time, a new discipline has emerged of active or smart materials, which are often constructed as composite or heterogeneous media and structures. One unifying theme in these diverse systems is the influence that uncoupled and coupled eigenfields or transformation fields exert on the various types of overall response, as well as on the respective phase responses. Problems of this kind are currently considered by different groups which may not always appreciate the similarities of the problems involved. The purpose of the IUTAM Symposium on Transformation Problems in Composite and Active Materials held in Cairo, Egypt from March 10 to 12, 1997 was to bring together representatives of the different groups so that they may interact and explore common aspects of these seemingly different problem areas. New directions in micromechanics research in both composite and active materials were also explored in the symposium. Specifically, invited lectures in the areas of inelastic behavior of composite materials, shape memory effects, functionally graded materials, transformation problems in composite structures, and adaptive structures were delivered and discussed during the three-day meeting. This book contains the printed contributions to the IUTAM Symposium.

Titanium Matrix Composites

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Author : Shankar Mall
Publisher : CRC Press
ISBN 13 : 1000725472
Total Pages : 482 pages
Book Rating : 4.0/5 (7 download)

Book Synopsis Titanium Matrix Composites by : Shankar Mall

Download or read book Titanium Matrix Composites written by Shankar Mall and published by CRC Press. This book was released on 2020-01-29 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review and summary of advancements related to mechanical behavior and related mechanics issues of titanium matrix composites (TMCs), a class of high-temperature materials useful in the propulsion and airframe components in advanced aerospace systems. After an introduction to TMCs, different authors review and summarise the advancements related to mechanical behavior and related mechanics issues of TMCs.

Composite Materials

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Author : Ravi B. Deo
Publisher : ASTM International
ISBN 13 : 080312404X
Total Pages : 419 pages
Book Rating : 4.8/5 (31 download)

Book Synopsis Composite Materials by : Ravi B. Deo

Download or read book Composite Materials written by Ravi B. Deo and published by ASTM International. This book was released on 1996 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fatigue of Composite Materials

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Author : K.L. Reifsnider
Publisher : Elsevier
ISBN 13 : 0444597182
Total Pages : 532 pages
Book Rating : 4.4/5 (445 download)

Book Synopsis Fatigue of Composite Materials by : K.L. Reifsnider

Download or read book Fatigue of Composite Materials written by K.L. Reifsnider and published by Elsevier. This book was released on 2012-12-02 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the first comprehensive review of its kind on the long-term behaviour of composite materials and structures subjected to time variable mechanical, thermal, and chemical influences, a subject of critical importance to the design, development, and certification of high performance engineering structures. Specific topics examined include damage, damage characterization, and damage mechanics; fatigue testing and evaluation; fatigue behaviour of short and long fibre reinforced polymer and metal matrix materials; viscoelastic and moisture effects; delamination; statistical considerations; the modeling of cumulative damage development; and life prediction. The volume provides an extensive presentation of data, discussions, and comparisons on the behaviour of the major types of material systems in current use, as well as extensive analysis and modeling (including the first presentation of work not found elsewhere). The book will be of special interest to engineers concerned with reliability, maintainability, safety, certification, and damage tolerance; to materials developers concerned with making materials for long-term service, especially under severe loads and environments, and to lecturers, students, and researchers involved in material system design, performance, solid mechanics, fatigue, durability, and composite materials. The scope of the work extends from entry level material to the frontiers of the subject.

Advances in Fatigue Lifetime Predictive Techniques

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Author : Michael R. Mitchell
Publisher : ASTM International
ISBN 13 : 080312029X
Total Pages : 354 pages
Book Rating : 4.8/5 (31 download)

Book Synopsis Advances in Fatigue Lifetime Predictive Techniques by : Michael R. Mitchell

Download or read book Advances in Fatigue Lifetime Predictive Techniques written by Michael R. Mitchell and published by ASTM International. This book was released on 1996 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Metal Matrix Composites

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Author : Minoru Taya
Publisher : Pergamon
ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.:/5 (89 download)

Book Synopsis Metal Matrix Composites by : Minoru Taya

Download or read book Metal Matrix Composites written by Minoru Taya and published by Pergamon. This book was released on 1989 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Methodologies for Predicting the Thermomechanical Fatigue Life of Unidirectional Metal Matrix Composites

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Author : RW. Neu
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (125 download)

Book Synopsis Methodologies for Predicting the Thermomechanical Fatigue Life of Unidirectional Metal Matrix Composites by : RW. Neu

Download or read book Methodologies for Predicting the Thermomechanical Fatigue Life of Unidirectional Metal Matrix Composites written by RW. Neu and published by . This book was released on 1996 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parameters and models to correlate the cycles to failure of a unidirectional metal matrix composite (SCS-6/Timetal 21S) undergoing thermal and mechanical loading are examined. Three different cycle types are considered: out-of-phase thermomechanical fatigue (TMF), in-phase TMF, and isothermal fatigue. A single parameter based on either the fiber or matrix behavior is shown not to correlate the cycles to failure of all the data. Two prediction methods are presented that assume that life may be dependent on at least two fatigue damage mechanisms and therefore consist of two terms. The first method, the linear life fraction model, shows that by using the response of the constituents, the life of these different cycle types are better correlated using two simple empirical relationships: one describing the fatigue damage in the matrix and the other fiber-dominated damage. The second method, the dominant damage model, is more complex but additionally brings in the effect of the environment. This latter method improves the predictions of the effects of the maximum temperature, temperature range, and frequency, especially under out-of-phase TMF and isothermal fatigue. The steady-state response of the constituents is determined using a 1-D micromechanics model with viscoplasticity. The residual stresses due to the CTE mismatch between the fiber and matrix during processing are included in the analysis.

Scientific and Technical Aerospace Reports

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Author :
Publisher :
ISBN 13 :
Total Pages : 692 pages
Book Rating : 4.:/5 (3 download)

Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proposed Framework for Thermomechanical Life Modeling of Metal Matrix Composites

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Author : Gary R. Halford
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (317 download)

Book Synopsis Proposed Framework for Thermomechanical Life Modeling of Metal Matrix Composites by : Gary R. Halford

Download or read book Proposed Framework for Thermomechanical Life Modeling of Metal Matrix Composites written by Gary R. Halford and published by . This book was released on 1993 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Life Prediction Methodology for Titanium Matrix Composites

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Author : W. Steven Johnson
Publisher : ASTM International
ISBN 13 : 0803120397
Total Pages : 625 pages
Book Rating : 4.8/5 (31 download)

Book Synopsis Life Prediction Methodology for Titanium Matrix Composites by : W. Steven Johnson

Download or read book Life Prediction Methodology for Titanium Matrix Composites written by W. Steven Johnson and published by ASTM International. This book was released on 1996 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the March 1994 symposium are organized into five sections that progress from basic understanding of mechanical damage mechanisms and environmental effects to life prediction methodology. Five papers discuss the interplay between interfacial strength, residual thermal stresses, an

Thermomechanical and Isothermal Fatigue Behavior of a (90)sub 8 Titanium Matrix Composite

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

Book Synopsis Thermomechanical and Isothermal Fatigue Behavior of a (90)sub 8 Titanium Matrix Composite by :

Download or read book Thermomechanical and Isothermal Fatigue Behavior of a (90)sub 8 Titanium Matrix Composite written by and published by . This book was released on 1993 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: