Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Fracture Mechanics Of Chemically Strengthened Glass
Download Fracture Mechanics Of Chemically Strengthened Glass full books in PDF, epub, and Kindle. Read online Fracture Mechanics Of Chemically Strengthened Glass ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Fracture Mechanics of Chemically Strengthened Glass by :
Download or read book Fracture Mechanics of Chemically Strengthened Glass written by and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : The ion-exchange process creates a residual stress profile along the depth direction with compression near the two surfaces transitioning to tensile stress in the mid-depth. The existence of compressive stress near-surface helps mitigate the impact of pre-existing cracks on strength reduction. The key parameters used to define an ion-exchange residual stress profile are compressive stress (), depth of Layer (DOL), and central tension (). A theoretical model such as Green's theorem has been used to predict the best combination of residual stress profile parameters ( and DOL) to produce glass with optimal strength and high fracture toughness. This model is based on the hypothesis of crack geometry conservation, which assumes that the geometry (width and depth) of a pre-ion-exchange crack (pre-existing crack) remains constant post-ion-exchange. The objectives of this study are to investigate experimentally, for a chemically strengthened glass with various severity of initial cracks/notches, the relationship between the residual stress parameters (, DOL) and the resulting fracture resistance as a function of applied fracture stress/fracture toughness and compare with analytical model predictions. The effect of the residual stress on the geometry of pre-existing crack and its efficacy in mitigating crack initiation and resisting crack (pre-ion-exchange or post-ion-exchange) propagation was also investigated. The results show that for a given crack depth, the optimal fracture resistance for a chemically strengthened glass requires a proper combination of the chemical strengthening residual stress parameters. The present study establishes that, unlike glass, the fracture toughness of a chemically strengthened glass () is not a constant material parameter but depends on the initial crack/notch depth. It was observed that the geometry of a pre-existing crack (width and depth) changes following the ion-exchange process. It was also determined that for a similar sharp contact event, ion-exchange-induced residual stresses help minimize the initiation of new cracks, and it is more effective in preventing the propagation from those cracks introduced post-ion-exchange compared to those presented before the ion-exchange process. These findings provide a novel understanding of the fracture toughness improvement of chemically strengthened glass, which should facilitate their widespread engineering applications.
Book Synopsis Elasticity and Strength in Glasses by : D Uhlmann
Download or read book Elasticity and Strength in Glasses written by D Uhlmann and published by Elsevier. This book was released on 2012-12-02 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glass: Science and Technology, Volume 5: Elasticity and Strength in Glasses covers the scientific and engineering aspects of glass elasticity and strength. This volume is organized into six chapters and begins with the examination of the elastic properties of vitreous silica and silicate glasses, including those that contain moderate amounts of other network formers. The following chapters describe the fracture mechanics and inelastic deformation of oxide, metallic, and polymeric glasses. The discussion then shifts to the concept of glass strengthening approaches and some technologies of significant practical application to glasses. A chapter explores the process of thermal tempering of glass, including the physics, theories, and standards of the process. The last chapter focuses on the practical aspects of chemical strengthening and the mechanical and physical properties of the obtained glass. This book is of great benefit to glass scientists and researchers.
Book Synopsis A Study of the Effect of the Ion Exchange Method of Chemical Tempering on a Macroflaw in Soda-Lime Glass by :
Download or read book A Study of the Effect of the Ion Exchange Method of Chemical Tempering on a Macroflaw in Soda-Lime Glass written by and published by . This book was released on 1971 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work examines the strengthening effect of the ion exchange method of chemical tempering on a macroflaw in glass. Use of a macroflaw allows a quantitative fracture mechanics analysis of the amount of strengthening. Precracked soda-lime glass specimens were treated for various lengths of time in a potassium nitrate salt bath held at lengths of time in a potassium nitrate salt bath held at 365C. The behavior of the macroflaw while being treated and at fracture was closely observed. The strain energy release rate, G sub c, and the fracture toughness, K sub c, were found by using the double cantilever cleavage technique of measuring fracture surface energies. The average strengthening which occurred at this temperature was found to be almost linear with time with a maximum increase of G sub c of approximately 300 per cent at twenty-four hours. The diffusion of ions was determined to be inward from the sides of the flaw rather than across the entire flaw tip. (Author).
Book Synopsis Fracture Mechanics of Ceramics by : R.C. Bradt
Download or read book Fracture Mechanics of Ceramics written by R.C. Bradt and published by Springer Science & Business Media. This book was released on 2010-01-11 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 8th International Symposium on fracture mechanics of ceramics was held in on the campus of the University of Houston, Houston, TX, USA, on February 25-28, 2003. With the natural maturing of the fields of structural ceramics, this symposium focused on nano-scale materials, composites, thin films and coatings as well as glass. The symposium also addressed new issues on fundamentals of fracture mechanics and contact mechanics, and a session on reliability and standardization.
Book Synopsis Phase Field Fracture Modeling of Chemically Strengthened Glass by :
Download or read book Phase Field Fracture Modeling of Chemically Strengthened Glass written by and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : The objective of the report is to implement the phase-field model in the Abaqus standard to compute the fracture properties of a glass strengthened by an ion-exchange process. Implemented the phase-field model which is based on the rate-independent variational principle of diffuse fracture in Abaqus standard software using the UEL and UMAT subroutines. SDVINI subroutine is used to give the residual stress or prestress conditions to simulate the stress profile of strengthened glass. Studied the effect of parameters such as length scale parameter and step size and the optimum parameters are selected. The experimental model of chemically strengthened glass is explained with analytical calculations to compute the stress intensity factor. Studied the effect of depth of the residual stress layer on the stress intensity factor. Stress intensity factor is calculated using the finite element analysis model and the results are compared with the experimental and analytical model.
Book Synopsis Impact Fracture of Glass. The Combined Finite-Discrete Element Study by : Xudong Chen
Download or read book Impact Fracture of Glass. The Combined Finite-Discrete Element Study written by Xudong Chen and published by GRIN Verlag. This book was released on 2019-11-06 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific Study from the year 2019 in the subject Engineering - Civil Engineering, Suzhou University of Science and Technology, language: English, abstract: This book introduces theoretical and practical aspects for modelling the impact fracture of glass and laminated glass using the combined finite-discrete element method (FDEM). The FDEM is a branch of the discrete element method (DEM), and combines finite element formulation into individual discrete elements. Thus, contact forces are evaluated more accurately. Regarding the fracture of glass, a Mode I-based smeared crack model is extended and employed in the FDEM, enabling crack initiation and propagation be captured naturally. Based on the employed method and the crack model, numerical examples on fracture of glass under both hard and soft impacts are presented and validated with data from computational and experimental sources. The combined finite-discrete element method is proven to be a reliable and robust tool for examining the impact fracture responses of glass.
Book Synopsis A Study of the Effect of the Ion Exchange Method of Chemical Tempering on a Macroflaw in Soda-Lime Glass by : Michael Jerome Liedmandt
Download or read book A Study of the Effect of the Ion Exchange Method of Chemical Tempering on a Macroflaw in Soda-Lime Glass written by Michael Jerome Liedmandt and published by . This book was released on 1971 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work examines the strengthening effect of the ion exchange method of chemical tempering on a macroflaw in glass. Use of a macroflaw allows a quantitative fracture mechanics analysis of the amount of strengthening. Precracked soda-lime glass specimens were treated for various lengths of time in a potassium nitrate salt bath held at lengths of time in a potassium nitrate salt bath held at 365C. The behavior of the macroflaw while being treated and at fracture was closely observed. The strain energy release rate, G sub c, and the fracture toughness, K sub c, were found by using the double cantilever cleavage technique of measuring fracture surface energies. The average strengthening which occurred at this temperature was found to be almost linear with time with a maximum increase of G sub c of approximately 300 per cent at twenty-four hours. The diffusion of ions was determined to be inward from the sides of the flaw rather than across the entire flaw tip. (Author).
Book Synopsis Springer Handbook of Glass by : J. David Musgraves
Download or read book Springer Handbook of Glass written by J. David Musgraves and published by Springer Nature. This book was released on 2019-11-08 with total page 1851 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook provides comprehensive treatment of the current state of glass science from the leading experts in the field. Opening with an enlightening contribution on the history of glass, the volume is then divided into eight parts. The first part covers fundamental properties, from the current understanding of the thermodynamics of the amorphous state, kinetics, and linear and nonlinear optical properties through colors, photosensitivity, and chemical durability. The second part provides dedicated chapters on each individual glass type, covering traditional systems like silicates and other oxide systems, as well as novel hybrid amorphous materials and spin glasses. The third part features detailed descriptions of modern characterization techniques for understanding this complex state of matter. The fourth part covers modeling, from first-principles calculations through molecular dynamics simulations, and statistical modeling. The fifth part presents a range of laboratory and industrial glass processing methods. The remaining parts cover a wide and representative range of applications areas from optics and photonics through environment, energy, architecture, and sensing. Written by the leading international experts in the field, the Springer Handbook of Glass represents an invaluable resource for graduate students through academic and industry researchers working in photonics, optoelectronics, materials science, energy, architecture, and more.
Book Synopsis Phase Field Fracture Modeling for Chemically Strengthened Glass and Machine Learning for Reaction-- Diffusion Equations by :
Download or read book Phase Field Fracture Modeling for Chemically Strengthened Glass and Machine Learning for Reaction-- Diffusion Equations written by and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : Chemically Strengthening (CS) of glass through artificial process like ion-exchange has emerged as a leading technique to improve the fracture toughness of glass. In this study a novel finding with regards to fracture resistance has been presented. The stress intensity factor of CS glass with varying initial flaw depths have been measured using experimental, analytical and numerical simulations. The main focus in this thesis is modeling CS glass using finite element simulations with phase field fracture modeling. Through thorough investigation of the numerical, analytical and experimental results it has been observed that the fracture toughness of CS glass varies with factors like intial crack depth and the degree of chemical strengthening. A physics informed neural network (PINN) incorporates the physics of a system by satisfying its boundary value problem through a neural network's loss function. The PINN approach has shown great success in approximating the map between the solution of a partial differential equation (PDE) and its spatio-temporal input. However, for strongly non-linear and higher order partial differential equations PINN's accuracy reduces significantly. To resolve this problem, we propose a novel PINN scheme that solves the PDE sequentially over successive time segments using a single neural network. The key idea is to re-train the same neural network for solving the PDE over successive time segments while satisfying the already obtained solution for all previous time segments. Thus it is named as backward compatible PINN (bc-PINN). To illustrate the advantages of bc-PINN, we have used the Cahn Hilliard and Allen Cahn equations, which are widely used to describe phase separation and reaction diffusion systems. Our results show significant improvement in accuracy over the PINN method while using a smaller number of collocation points. Additionally, we have shown that using the phase space technique for a higher order PDE could further improve the accuracy and efficiency of the bc-PINN scheme.
Book Synopsis On the Fracture Behaviour and the Fracture Pattern Morphology of Tempered Soda-Lime Glass by : Navid Pour-Moghaddam
Download or read book On the Fracture Behaviour and the Fracture Pattern Morphology of Tempered Soda-Lime Glass written by Navid Pour-Moghaddam and published by Springer Nature. This book was released on 2019-11-08 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main criteria for assessing the load-bearing behaviour and risk potential of monolithic glass are its fragmentation and the morphology of the fragments. These depend strongly non-linearly on the strain energy density present in the glass at the time of fracture, which can be converted into fracture energy. Thus, the design and optimization of structural glazing in engineering requires both knowledge of the relevant parameters and mechanisms during the fracture process in glass and an understanding of the characteristics of the fracture structure. Based on fracture mechanics considerations and comprehensive experimental investigations, various aspects and physical quantities of fracture behaviour as well as characteristics and parameters of fracture pattern morphology of fragmented, tempered soda-lime glass were studied and correlated with the stored strain energy. The relationship between fragmentation behavior and strain energy was elaborated using the energy criterion in Linear Elastic Fracture Mechanics (LEFM) related to the initial strain energy before fragmentation and in the post-fracture state. Furthermore, a machine learning inspired approach for the prediction of 2D macro-scale fragmentation of tempered glass was developed and elaborated based on fracture mechanics considerations and statistical analysis of the fracture pattern morphology. A method was deduced and applied in which the fracture pattern of tempered glass is predicted and simulated by Voronoi tessellation of point patterns based on Bayesian spatial point statistics fed with energy conditions in LEFM.
Author :United States. National Bureau of Standards. Technical Information and Publications Division Publisher : ISBN 13 : Total Pages :844 pages Book Rating :4.3/5 (91 download)
Book Synopsis Catalog of National Bureau of Standards Publications, 1966-1976 by : United States. National Bureau of Standards. Technical Information and Publications Division
Download or read book Catalog of National Bureau of Standards Publications, 1966-1976 written by United States. National Bureau of Standards. Technical Information and Publications Division and published by . This book was released on 1978 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fractography of Glasses and Ceramics V by : James R. Varner
Download or read book Fractography of Glasses and Ceramics V written by James R. Varner and published by John Wiley & Sons. This book was released on 2007-08-06 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers presented at The Fifth Conference on the Fractography of Glasses and Ceramics Held in Rochester, New York, July 9-13 2006. Chapters include The Fracture Process at the Crack Tip, Fundamental Phenomena, Fractography of Contact Damage in Glasses and Ceramics, Identifying and Understanding Flaws in Ceramics, Fractography of Dental and Biomaterials, Fractography of Components, and Fracture Phenomena in Geology. This text provides a useful one-stop resource for understanding the most important issues in the research and applications of fractography of glasses and ceramics.
Book Synopsis Deformation and Fracture Mechanics of Engineering Materials by : Richard W. Hertzberg
Download or read book Deformation and Fracture Mechanics of Engineering Materials written by Richard W. Hertzberg and published by John Wiley & Sons. This book was released on 2020-07-08 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deformation and Fracture Mechanics of Engineering Materials, Sixth Edition, provides a detailed examination of the mechanical behavior of metals, ceramics, polymers, and their composites. Offering an integrated macroscopic/microscopic approach to the subject, this comprehensive textbook features in-depth explanations, plentiful figures and illustrations, and a full array of student and instructor resources. Divided into two sections, the text first introduces the principles of elastic and plastic deformation, including the plastic deformation response of solids and concepts of stress, strain, and stiffness. The following section demonstrates the application of fracture mechanics and materials science principles in solids, including determining material stiffness, strength, toughness, and time-dependent mechanical response. Now offered as an interactive eBook, this fully-revised edition features a wealth of digital assets. More than three hours of high-quality video footage helps students understand the practical applications of key topics, supported by hundreds of PowerPoint slides highlighting important information while strengthening student comprehension. Numerous real-world examples and case studies of actual service failures illustrate the importance of applying fracture mechanics principles in failure analysis. Ideal for college-level courses in metallurgy and materials, mechanical engineering, and civil engineering, this popular is equally valuable for engineers looking to increase their knowledge of the mechanical properties of solids.
Book Synopsis Fractography of Glass by : R.C. Bradt
Download or read book Fractography of Glass written by R.C. Bradt and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the first major reference on glass fractography, contributors to this volume offer a comprehensive account of the fracture of glass as well as various fracture surface topography. Contributors discuss optical fibers, glass containers, and flatglass fractography. In addition, papers explore fracture origins; the growth of the original flaws of defects; and macroscopic fracture patterns from which fracture patterns evolve. This volume is complete with photographs and schematics.
Book Synopsis Catalog of National Bureau of Standards Publications, 1966-1976 by : United States. National Bureau of Standards
Download or read book Catalog of National Bureau of Standards Publications, 1966-1976 written by United States. National Bureau of Standards and published by . This book was released on 1978 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mosaic written by and published by . This book was released on 1980 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBS Special Publication written by and published by . This book was released on 1978 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
