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Interfacial Fracture Toughness Of Alumina
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Book Synopsis Interfacial Fracture Toughness of Alumina by :
Download or read book Interfacial Fracture Toughness of Alumina written by and published by . This book was released on 1991 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interfacial fracture toughness of an alumina/niobium composite has been measured as a function of phase angle. The interface was formed by solid-state bonding bulk Coor's AD-999 fine-grain alumina with a commercial purity niobium at 1600°C for 0.5 hr under a pressure of 10.5 MPa. The alumina/niobium system has a number of features which makes it ideal for an investigation of interfacial fracture toughness. From HREM data we estimate that the width of the interface is no more than 10 atomic planes. Furthermore the thermal expansion coefficients of the two materials differ by less than 5% so residual stresses due to the bonding process are small. Using symmetric and asymmetric four point bend specimens we have measured the fracture toughness of homogenous alumina and that of the alumina/niobium bimaterial in combinations of in-plane shear and tension. The fracture toughness of the homogenous alumina is relatively insensitive to the loading phase. The measured fracture toughness K{sub c} of the interface, however, depended strongly on phase angle. We were unable to obtain valid alumina/niobium interfacial toughness data at negative phase angles as the fracture initiates in the alumina and not at the interface. In symmetric bending at a phase angle (almost equal to)5°, we measured a nominal interface toughness of 4.0 MPa(square root)m, comparable to the homogeneous alumina. We found that the toughness increased with loading phase angle to a value of K{sub c} (almost equal to) 9 MPa(square root)m at a phase between 25° and 40°. Preliminary calculations and experiments suggest that this effect is due to an asymmetric stress distribution, with respect to the interface, and plastic deformation in the niobium. 12 refs., 9 figs., 1 tab.
Book Synopsis Investigation of the Fracture Toughness of the Nickel-alumina System, Interface by : Shujun Tang
Download or read book Investigation of the Fracture Toughness of the Nickel-alumina System, Interface written by Shujun Tang and published by . This book was released on 1999 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interfacial and Near Interfacial Crack Growth Phenomena in Metal Bonded Alumina by : Jamie Joseph Kruzic
Download or read book Interfacial and Near Interfacial Crack Growth Phenomena in Metal Bonded Alumina written by Jamie Joseph Kruzic and published by . This book was released on 2001 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of Processing Conditions and Interlayer Composition on the Interfacial Microstructure and Fracture Strength of Alumina/niobium Assemblies Produced Via Partial-transient-liquid-phase Bonding by : Thomas Bither Reynolds
Download or read book Influence of Processing Conditions and Interlayer Composition on the Interfacial Microstructure and Fracture Strength of Alumina/niobium Assemblies Produced Via Partial-transient-liquid-phase Bonding written by Thomas Bither Reynolds and published by . This book was released on 2009 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of Residual Stresses on Ceramic-metal Interfacial Toughness by : Mark Edward Thurston
Download or read book Influence of Residual Stresses on Ceramic-metal Interfacial Toughness written by Mark Edward Thurston and published by . This book was released on 1994 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interface Fracture and Delaminations in Composite Materials by : Leslie Banks-Sills
Download or read book Interface Fracture and Delaminations in Composite Materials written by Leslie Banks-Sills and published by Springer. This book was released on 2017-07-05 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part I of this SpringerBrief presents the problem of a crack between two dissimilar isotropic materials and describes the mathematical background. A fracture criterion is discussed and Methods for calculating fracture parameters such as stress intensity factors using the finite element method and three post-processors are considered. Actual test data and both deterministic and statistical failure curves are presented.In Part II of the book, similar descriptions are given for delaminations in composite laminates. The mathematical treatment of this type of damage including the first term of the asymptotic expansion of the stress and displacement fields is considered. Numerical post-processors for determining stress intensity factors for these cases are reviewed. Two examples of specific laminates are presented: one with a failure curve and the other with a failure surface. Finally, beam specimens used for testing such failures are discussed.
Book Synopsis Science and Technology of Zirconia II by : Manfred Rühle
Download or read book Science and Technology of Zirconia II written by Manfred Rühle and published by . This book was released on 1984 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Fillers and Filler Interface on Fracture Toughness of Epoxy-alumina Composites by : Laura M. McGrath
Download or read book Effect of Fillers and Filler Interface on Fracture Toughness of Epoxy-alumina Composites written by Laura M. McGrath and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interfacial Phenomena in Composite Materials '91 by : Ignaas Verpoest
Download or read book Interfacial Phenomena in Composite Materials '91 written by Ignaas Verpoest and published by Elsevier. This book was released on 2017-05-04 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interfacial Phenomena in Composite Materials '91 is a collection of papers dealing with the science of composite interfaces, with emphasis on theoretical modeling, test methods, and characterization methods of polymer matrix, metal, or ceramic matrix composites. One paper reviews the micromechanical test methods used in evaluating mechanical properties of fiber-matrix interface. Another paper shows that the critical fiber length cannot always be considered a material constant in the framework of load transfer models based on the shear lag theory. Microwave plasma treatment is a quick technology to change fiber surface structure as the oxidation or the roughening of the fiber increases fiber-matrix adhesion. Another paper evaluates the effect of improved adhesion on mechanical performance under static, dynamic, and impact conditions. It also examines the role of fiber anisotropy on the performance of high performance polyethylene/epoxy composites. By using the Laser Raman Spectroscopy, the investigator can analyze the effects of the fiber surface treatment, the fiber modulus, the curing temperature on the Shear strength, and the fracture mechanics of the interface. The collection can be read profitably by chemists, biochemists, and academicians involved in material compound research.
Author :American Society of Mechanical Engineers. Winter Meeting Publisher :American Society of Mechanical Engineers ISBN 13 : Total Pages :168 pages Book Rating :4.3/5 (91 download)
Book Synopsis Experiments in Micromechanics of Failure Resistant Materials by : American Society of Mechanical Engineers. Winter Meeting
Download or read book Experiments in Micromechanics of Failure Resistant Materials written by American Society of Mechanical Engineers. Winter Meeting and published by American Society of Mechanical Engineers. This book was released on 1991 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Progress in Adhesion and Adhesives, Volume 3 by : K. L. Mittal
Download or read book Progress in Adhesion and Adhesives, Volume 3 written by K. L. Mittal and published by John Wiley & Sons. This book was released on 2018-06-25 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: A solid collection of interdisciplinary review articles on the latest developments in adhesion science and adhesives technology With the ever-increasing amount of research being published, it is a Herculean task to be fully conversant with the latest research developments in any field, and the arena of adhesion and adhesives is no exception. Thus, topical review articles provide an alternate and very efficient way to stay abreast of the state-of-the-art in many subjects representing the field of adhesion science and adhesives. Based on the success of the preceding volumes in this series "Progress in Adhesion and Adhesives"), the present volume comprises 12 review articles published in Volume 5 (2017) of Reviews of Adhesion and Adhesives. The subject of these 12 reviews fall into the following general areas: 1. Nanoparticles in reinforced polymeric composites. 2. Wettability behavior and its modification, including superhydrophobic surfaces. 3. Ways to promote adhesion, including rubber adhesion. 4. Adhesives and adhesive joints 5. Dental adhesion. The topics covered include: Nanoparticles as interphase modifiers in fiber reinforced polymeric composites; fabrication of micro/nano patterns on polymeric substrates to control wettability behavior; plasma processing of aluminum alloys to promote adhesion; UV-curing of adhesives; functionally graded adhesively bonded joints; adhesion between unvulgarized elastomers; electrowetting for digital microfluidics; control of biofilm at the tooth-restoration bonding interface; easy-to-clean superhydrophobic coatings; cyanoacrylates; promotion of resin-dentin bond longevity in adhesive dentistry; and effects of nanoparticles on nanocomposites Mode I and Mode II fractures.
Book Synopsis Scratching of Materials and Applications by : Sujeet K. Kumar Sinha
Download or read book Scratching of Materials and Applications written by Sujeet K. Kumar Sinha and published by Elsevier. This book was released on 2006-09-29 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: The surface characterizations of engineering materials effects their scratch/abrasion/Mar resistance, coating adhesion/strength, and abrasive wear mechanism. Scratching of Materials and Applications has chapters devoted to direct industrial application and contains some of the important works that are being conducted. Scratch testing of materials has grown extensively since the earlier days of the Mohs Scale for ranking minerals according to their relative scratch resistance. This test has been used on metals, ceramics, glasses, polymers and coatings of various types and thicknesses.The chapters are grouped according to the type of the engineering materials used. The beginning chapters relate mostly to bulk polymers, which are followed by different types of coatings (hard wear resistant to the diamond-like carbon coatings) and finally, chapters on the application of scratching technique to metals and ceramics are included at the end of the book. Thus, the book covers a fairly wide spectrum of engineering materials which are useful to engineers and researchers.* Balances theoretical science with practical application* Demonstrates real-life applications within industry* Written experts in the fields of materials, tribology and surface mechanics
Book Synopsis Advances in the Mechanics of Plates and Shells by : D. Durban
Download or read book Advances in the Mechanics of Plates and Shells written by D. Durban and published by Springer Science & Business Media. This book was released on 2001-11-30 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: The optimal control of flexible structures is an active area of research. The main body of work in this area is concerned with the control of time-dependent displacements and stresses, and assumes linear elastic conditions, namely linear elastic material behavior and small defor- tion. See, e. g. , [1]–[3], the collections of papers [4, 5], and references therein. On the other hand, in the present paper we consider the static optimal control of a structure made of a nonlinear elastic material and und- going large deformation. An important application is the suppression of static or quasi-static elastic deformation in flexible space structures such as parts of satellites by the use of control loads [6]. Solar rad- tion and radiation from other sources induce a temperature field in the structure, which in turn generates an elastic displacement field. The displacements must usually satisfy certain limitations dictated by the allowed working conditions of various orientation-sensitive instruments and antennas in the space vehicle. For example, a parabolic reflector may cease to be effective when undergoing large deflection. The elastic deformation can be reduced by use of control loads, which may be imp- mented via mechanically-based actuators or more modern piezoelectric devices. When the structure under consideration is made of a rubb- like material and is undergoing large deformation, nonlinear material and geometric effects must be taken into account in the analysis.
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 Interface Fracture in Layered Materials and Blister Mechanics of Thin Films by : Simon S. Wang
Download or read book Interface Fracture in Layered Materials and Blister Mechanics of Thin Films written by Simon S. Wang and published by Cambridge Scholars Publishing. This book was released on 2024-02-06 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Layered materials and thin film coatings are ubiquitous in today’s science, engineering, and technology sectors. To name just a few examples: fibre-reinforced composite laminates in aircraft structures, thermal barrier coatings in aero-engines and power turbines, multilayer Mo/Si mirrors of nanometre thickness in synchrotrons, telescope optics, extreme ultraviolet optical systems, etc. The inherent weak interfaces in these materials are extremely vulnerable to fracture which often causes thin film blisters of various morphologies. The authors of the present work have made some significant research progress on this topic; the book gathers these advancements to provide researchers and engineers with more theoretical tools to study and design such material systems. Furthermore, this book can be used as a textbook in advanced courses for postgraduate students. To suit these purposes, each chapter focuses on a relatively independent topic and consists of both theoretical development and experimental applications. Many figures and numerical tables are used to help readers with mechanical understanding and self-practice.
Download or read book NBS Special Publication written by and published by . This book was released on 1979 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
