Download or read book Contact Mechanics Studies of Polymer Thin Film Adhesion written by Rachel Lynn McSwain and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The work presented in this dissertation focuses on using the unique abilities of the JKR technique to probe the interfacial interactions of two independent polymer systems. To perform these studies, modifications were made to the JKR technique, including the integration of a thermal cycle to enable testing of thermally initiated interfacial interactions between two materials. Another enhancement of the JKR technique involved incorporation of cyclic testing to study crack growth under fatigue conditions.

Download or read book Mechanical Properties of Polymers Measured through AFM Force Distance Curves written by Brunero Cappella and published by Springer. This book was released on 2016-07-14 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Springer Laboratory volume is a practical guide for scientists and students dealing with the measurement of mechanical properties of polymers at the nanoscale through AFM force-distance curves. In the first part of the book the reader will find a theoretical introduction about atomic force microscopy, focused on force-distance curves, and mechanical properties of polymers. The discussion of several practical issues concerning the acquisition and the interpretation of force-distance curves will help scientists starting to employ this technique. The second part of the book deals with the practical measurement of mechanical properties of polymers by means of AFM force-distance curves. Several "hands-on" examples are illustrated in a very detailed manner, with particular attention to the sample preparation, data analysis, and typical artefacts. This section gives a complete overview about the qualitative characterization and quantitative determination of the mechanical properties of homogeneous polymer samples, polymer brushes, polymer thin films, confined polymer samples, model blends and microstructured polymer blends through AFM force-distance curves. The book also introduces to new approaches and measurement techniques, like creep compliance and force modulation measurements, pointing out approximations, limitations and issues requiring further confirmation.

Download or read book Experimental Investigation of Polymer Adhesion Mechanics Using a Blister Contact Test written by Nathan Ip and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The adhesion of thin layers of soft polymers is important in many applications, such as tapes, microtransfer printing, and bioinspired adhesives. Traditional adhesion tests based on probe contacts are not suitable for characterizing thin layers and common separation-based specimens, such as the peel test, have well-known limitations. The blister contact test (BCT) was developed in this dissertation to overcome the limitations of current methods and was used to investigate the adhesion and separation of several technologically relevant adhesive systems. In the BCT, a thin sheet was elastically deformed into adhesive contact with a reference substrate and the contact area was optically imaged. Modulated pressure was applied to generate both advancing and receding adhesive contact. Digital image correlation was used to measure the displacements of the specimen. The strain energy release rate at the interface was determined from the measured contact radius, applied pressure, system geometry, and elastic properties of the specimen using a mechanics model. An analytical mechanics model based on von Kármán plate theory was developed and used for analysis of the BCT data. Finite element analysis was used to validate and identify the range of applicability of the analytical model. The BCT was used to investigate the adhesion and separation behaviors of three different polymer adhesive systems. First, experiments between a silicone elastomer (polydimethylsiloxane--PDMS) and a stiff substrate were performed to investigate rate effects in adhesion and separation. For the first time, the rate dependence during advancing contact was characterized. Second, the effect of acid-base interactions on performance of pressure sensitive adhesives (PSAs) was examined via a series of BCTs in which adhesion between different formulations of adhesives and multiple substrates was investigated. Viscoelastic contributions to PSA adhesion were also studied. Finally, the effect of layer thickness on rate dependence was investigated through experiments between polyethylene terephthalate (PET) sheets and PDMS films of different thicknesses. The work in this dissertation demonstrates the flexibility and capability of the BCT as a method to characterize adhesion of flat polymer sheets and provides new understanding of several types of polymer adhesive contacts.

Download or read book Applications of Contact and Fracture Mechanics to Studies of Polymer Adhesion written by James Michael Baney and published by . This book was released on 2000 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polymer Adhesion Friction and Lubrication written by Hongbo Zeng and published by John Wiley & Sons. This book was released on 2013-02-07 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: Specifically dedicated to polymer and biopolymer systems, Polymer Adhesion, Friction, and Lubrication guides readers to the scratch, wear, and lubrication properties of polymers and the engineering applications, from biomedical research to automotive engineering. Author Hongbo Zeng details different experimental and theoretical methods used to probe static and dynamic properties of polymer materials and biomacromolecular systems. Topics include the use of atomic force microscopy (AFM) to analyze nanotribology, polymer thin films and brushes, nanoparticles, rubber and tire technology, synovial joint lubrication, adhesion in paper products, bioMEMS, and electrorheological fluids.

Download or read book Introduction to Contact Mechanics written by Anthony C. Fischer-Cripps and published by Springer Science & Business Media. This book was released on 2006-04-06 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical engineering, an engineering discipline forged and shaped by the needs of the industrial revolution, is once again asked to do its substantial share in the call for industrial renewal. The general call is urgent as we face profound issues of productivity and competitiveness that require engineering solutions. The Mechanical Engineering Series features graduate texts and research mo- graphs intended to address the need for information in contemporary areas of mechanical engineering. The series is conceived as a comprehensive one that covers a broad range of concentrations important to mechanical engineering graduate education and - search. We are fortunate to have a distinguished roster of consulting editors on the advisory board, each an expert in one of the areas of concentration. The names of the consulting editors are listed on the facing page of this volume. The areas of concentration are applied mechanics, biomechanics, computational - chanics, dynamic systems and control, energetics, mechanics of materials, pr- essing, production systems, thermal science, and tribology. Professor Finnie, the consulting editor for mechanics of materials, and I are pleased to present Introduction to Contact Mechanics by Anthony C. Fischer- Cripps.

Download or read book Adhesion and Adsorption of Polymers written by Lieng-Huang Lee and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Honolulu is a most beautiful place, suitable for all occa sions. Its choice as the meeting site for the first Joint Chemical Congress between the American Chemical Society and the Chemical Society of Japan was praised by scientists from both sides. During this Congress, the International Conference on Adhesion and Adsorption of Polymers was held at the Hyatt Regency Hotel between April 2 and 5, 1979. We had speakers from ten nations presenting over forty papers related to the subject matter. It was a memorable event. Unlike our two previous adhesion symposia held in 1971 and 1975, this was the first time in the same conference that we discussed both adhesion and adsorption of polymers simultaneously. These two important phenomena are not only inter-related, but also equally important in adhesive technology as well as biochemical processes. The papers presented to this Conference deal with these two phenomena from both fundamental and practical viewpoints. Furthermore, with the advance of new surface analytical techniques, the actual, microscopic happenings at the interfaces can be pin pointed. Thus, characterization of interface became one of the major focuses of this Conference. As a result, a broad coverage of the subject matter includes statistical thermodynamics, surface physics, surface analysis, fracture mechanics, viscoelasticity, failure analysis, surface modification, adsorption kinetics, bio polymer adsorption, etc. Thanks to the diligence of our contri butors, we are now able to publish the final papers in these two volumes.

Download or read book Handbook of Contact Mechanics written by Valentin L. Popov and published by Springer. This book was released on 2019-05-31 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book contains a structured collection of the complete solutions of all essential axisymmetric contact problems. Based on a systematic distinction regarding the type of contact, the regime of friction and the contact geometry, a multitude of technically relevant contact problems from mechanical engineering, the automotive industry and medical engineering are discussed. In addition to contact problems between isotropic elastic and viscoelastic media, contact problems between transversal-isotropic elastic materials and functionally graded materials are addressed, too. The optimization of the latter is a focus of current research especially in the fields of actuator technology and biomechanics. The book takes into account adhesive effects which allow access to contact-mechanical questions about micro- and nano-electromechanical systems. Solutions of the contact problems include both the relationships between the macroscopic force, displacement and contact length, as well as the stress and displacement fields at the surface and, if appropriate, within the half-space medium. Solutions are always obtained with the simplest available method - usually with the method of dimensionality reduction (MDR) or approaches which use the solution of the non-adhesive normal contact problem to solve the respective contact problem.

Download or read book Polymer Interfaces and Thin Films Volume 710 written by Materials Research Society. Meeting and published by . This book was released on 2002 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer interfaces are critical for many technological and industrial applications in thin films including microelectronics, packaging, automotive coatings and sensors. The structure and architecture of interfaces in thin films and bulk polymeric systems can be exceedingly complex. In thin films, the technological drive to diminish film thickness while simultaneously enhancing homogeneity, stability and adhesion, is a demanding challenge driving research in newer areas of nanofilled and controlled nanostructured and nanopatterned materials. Tailoring surface and interfacial properties is equally important for new developments in the traditional fields of bulk polymer blends, adhesion and wetting. There is a need to develop an understanding of interfacial phenomena with the ultimate goal of establishing structure-property relationships with quantitative predictive capabilities and this book discusses these challenges. Topics include: block copolymer films; theory, simulations and dynamics; polymer interfaces and thin films; adhesion and mechanical properties; self-assembly by polymeric films; self-assembly and electronic properties; lithographic, electronic properties; and nanoparticulate-filled films.

Download or read book Adhesion Aspects of Thin Films volume 2 written by Kash L. Mittal and published by CRC Press. This book was released on 2005-05-06 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume documents the proceedings of the International Symposium on Adhesion Aspects of Thin Films (including Adhesion Measurement, and Metallized plastics) held in Orlando, FL, December 15-16, 2003. This volume is divided into three parts. Part 1 “General Papers”; Part 2 “Metallized Plastics”; and Part 3 “Adhesion Measurement”. The topics covered include: Factors influencing adhesion of thin films; relevance of stresses in film adhesion; surface effects on intrinsic thin film stresses; adhesion improvement; hemocompatibility of DLC coatings; thin films of various materials on a host of substrates; thin polymer films; surface modification of polymers; adhesion of metal films on polymers; investigation of metal-polymer interactions; adhesion measurement; scratch test; microscratch test; and abrasion and durability of thin films.

Download or read book Investigation of Adhesion and Fracture of the Polymer oxide Interfaces Using Rolling Contact Mechanics written by Honquan She and published by . This book was released on 2002 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the very basic origin, the adhesion strength or fracture resistance of contacting interfaces results from intermolecular forces. When interface is separated, external energy is provided to the system, which eventually is dissipated in the form of mechanical deformation of the bulk material and cleavage of the interfacial bonds. The objective of this study is to understand the energy dissipation mechanism of interfacial fracture. It particularly includes polymer molecular weight and rate dependent properties of fracture. The model system consists of an oxidized polydimethylsiloxane(PDMS)-made hemicylinder and a PDMS thin films substrate, in which system energy is mainly dissipated at the interface layer. A unique experimental methodology---rolling contact mechanics method is developed by rolling the hemi-cylinder on the test substrate at a uniform velocity, the contact deformation of which is used to estimate the energy dissipation governed by non-equilibrium processes occurred at the interface. The strong molecular weight dependent fracture energy can be explained in terms of polymer chain extension and relaxation, which has its origins in the classic Lake-Thomas theory. The fracture energy is amplified by the molecular weights of polymers which bridge the open interface. The rate effect can be explained using the kinetic theory of thermally activated bond rupture, the results of which point out that this molecular weight dependent Lake-Thomas effect is purely a non-equilibrium effect and isn't compatible with the traditional notion of equilibrium fracture. The energy dissipation occurred at the interface can now be understood under the framework which combined chain elasticity and interfacial kinetics.

Download or read book Intrinsic Adhesion Between Polymer Films written by Venkata Subrahmanyam Mangipudi and published by . This book was released on 1995 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work involves the modification and characterization of polymers surfaces, and the development of novel experimental techniques to measure directly their surface energies and the interfacial adhesion. In most of the studies reported here, the surface forces apparatus (SFA) has been used to measure the molecular level adhesion between a variety of polymeric materials.

Download or read book Polymer Interface and Adhesion written by Wu and published by CRC Press. This book was released on 1982-03-31 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poly mer Interface and Adhesion provides the critical basis for further advancement in thisfield. Combining the principles of interfacial science, rheology, stress analysis, and fracturemechanics, the book teaches a new approach to the analysis of long standing problemssuch as: how is the interface formed; what are its physical and mechanical properties;and how does the interface modify the stress field and fracture strength of the material.The book offers many outstanding features, including extensive listings of pertinent references, exhaustive tabulations of the interfacial properties of polymers, critical reviews ofthe many conflicting theories, and complete discussions of coupling agents, adhesion promotion, and surface modifications. Emphasis is placed on physical concepts and mechanisms, using clear, understandable mathematics.Polymer Interface and Adhesion promotes a more thorough understanding of the physical, mechanical, and adhesive properties of multiphase, polymer systems. Polymer scientistsand engineers, surface chemists, materials scientists, rheologists, as well as chemical andmechanical engineers interested in the research, development or industrial applications ofpolymers, plastics, fibers, coatings, adhesives, and composites need this important newsource b

Download or read book Contact Mechanics and Friction written by Valentin L. Popov and published by Springer. This book was released on 2017-03-10 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: This application-oriented book introduces readers to the associations and relationships between contact mechanics and friction, providing them with a deeper understanding of tribology. It addresses the related phenomena of contacts, adhesion, capillary forces, friction, lubrication, and wear from a consistent point of view. The author presents (1) methods for rough estimates of tribological quantities, (2) simple and general methods for analytical calculations, and (3) the crossover into numerical simulation methods, the goal being to convey a consistent view of tribological processes at various scales of magnitude (from nanotribology to earthquake research). The book also explores the system dynamic aspects of tribological systems, such as squeal and its suppression, as well as other types of instabilities and spatial patterns. It includes problems and worked-out solutions for the respective chapters, giving readers ample opportunity to apply the theory to practical situations and to deepen their understanding of the material discussed. The second edition has been extended with a more detailed exposition of elastohydrodynamic lubrication, an updated chapter on numerical simulation methods in contact mechanics, a new section on fretting in the chapter on wear, as well as numerous new exercises and examples, which help to make the book an excellent reference guide.

Download or read book Discrete Contact Mechanics with Applications in Tribology written by Irina Goryacheva and published by Elsevier. This book was released on 2022-05-03 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discrete Contact Mechanics with Applications in Tribology presents new solutions to contact problems for elastic and viscoelastic bodies in normal, sliding, and rolling contact, taking into account effects such as surface microgeometry, adhesion, fluid films, and viscous hysteresis in bulk material or surface layers. These solutions are applied to problems in tribology for modeling contact and friction of bodies with surface microgeometry (rough or textured). The book provides exact mathematical formulations for cases of discrete contact based on classical approaches of contact mechanics, allowing readers to study the influence of different parameters of surface microgeometry on contact characteristics and friction force.The book will help solve problems in modeling contact and friction interaction in cases of discrete character of contact interaction, mutual influence of individual contact spots in contact interaction of elastic and viscoelastic solids, calculating sliding and rolling friction forces as a result of adhesive and viscoelastic mechanisms of dissipation, and more. Provides a raft of solutions to contact problems for elastic and viscoelastic materials in normal, sliding, and rolling contact Provides solutions and formulations that consider surface microgeometry, adhesion, fluid films, viscous hysteresis in bulk material or surface layers, and other common material effects Features applied methods based on classical contact mechanics approaches, allowing for analytic and half-analytic treatment of problems

Download or read book Characterization of Polymer Surfaces and Thin Films written by K. Grundke and published by Springer. This book was released on 2010-12-16 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes contributions to the 10th Dresden Polymer Discussion held in 2005. The meeting focused on the characterization of polymer surfaces and thin films. The contributions cover a representative spectrum of surface sensitive techniques and their application to polymer surface and thin film characterization, as well as recent examples of technologically relevant materials and process development.

Download or read book Contact mechanics perspective of tribology written by Irina Goryacheva and published by Frontiers Media SA. This book was released on 2021-06-04 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: