Dynamic Mechanical Analysis

Author: Kevin P. Menard
Publisher: CRC Press
ISBN: 9781420053135
Size: 12.73 MB
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Dynamic mechanical analysis (DMA) has left the domain of the rheologist and has become a prevalent tool in the analytical laboratory. However, information on the use of this important tool is still scattered among a range of books and articles. Novices in the field have to dig through thermal analysis, rheology, and materials texts just to find the basics. Updated with new material, expanded practical explanations, and new applications, Dynamic Mechanical Analysis, Second Edition continues to give chemists, engineers, and materials scientists a starting point for applying DMA to their individual fields. It imparts a clear understanding of how DMA works, its advantages, and possible limitations. Additional topics include stress/strain, data handling, experimental technology, test methods, and data analysis. One of the only references dedicated to DMA, this accessible and easy-to-read guide gathers the most pertinent information available on this important technique.

Adhesives In Marine Engineering

Author: Jan R Weitzenböck
Publisher: Elsevier
ISBN: 085709615X
Size: 65.98 MB
Format: PDF, Mobi
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As a method of joining with economic, performance-related and environmental advantages over traditional welding in some applications, adhesive bonding of joints in the marine environment is increasingly gaining popularity. Adhesives in marine engineering provides an invaluable overview of the design and use of adhesively-bonded joints in this challenging environment. After an introduction to the use of adhesives in marine and offshore engineering, part one focuses on adhesive solution design and analysis. The process of selecting adhesives for marine environments is explored, followed by chapters discussing the specific design of adhesively-bonded joints for ship applications and wind turbines. Predicting the failure of bonded structural joints in marine engineering is also considered. Part two reviews testing the mechanical, thermal and chemical properties of adhesives for marine environments together with the moisture resistance and durability of adhesives for marine environments. With its distinguished editor and international team of expert contributors, Adhesives in marine engineering is an essential guide for all those involved in the design, production and maintenance of bonded structures in the marine environment, as well as proving a key source for academic researchers in the field. Provides an invaluable overview of the design and use of adhesively-bonded joints in marine environments Discusses the use of adhesives in marine and offshore engineering, adhesive solution design and analysis, and the design of adhesively-bonded joints for ship applications and wine turbines, among other topics Reviews testing the mechanical, thermal and chemical properties of adhesives for marine environments, together with the moisture resistance and durability of these adhesives

Fingerprinting Analysis And Quality Control Methods Of Herbal Medicines

Author: Ravindra Kumar Pandey
Publisher: Routledge
ISBN: 1351712586
Size: 66.19 MB
Format: PDF, Kindle
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Due to the increase in the consumption of herbal medicine, there is a need to know which scientifically based methods are appropriate for assessing the quality of herbal medicines. Fingerprinting has emerged as a suitable technique for quality estimation. Chemical markers are used for evaluation of herbal medicines. Identification and quantification of these chemical markers are crucial for quality control of herbal medicines. This book provides updated knowledge on methodology, quality assessment, toxicity analysis and medicinal values of natural compounds.

Principles And Applications Of Thermal Analysis

Author: Paul Gabbott
Publisher: John Wiley & Sons
ISBN: 0470698128
Size: 69.54 MB
Format: PDF, ePub
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Thermal Analysis techniques are used in a wide range of disciplines, from pharmacy and foods to polymer science, materials and glasses; in fact any field where changes in sample behaviour are observed under controlled heating or controlled cooling conditions. The wide range of measurements possible provide fundamental information on the material properties of the system under test, so thermal analysis has found increasing use both in basic characterisation of materials and in a wide range of applications in research, development and quality control in industry and academia. Principles and Applications of Thermal Analysis is written by manufacturers and experienced users of thermal techniques. It provides the reader with sound practical instruction on how to use the techniques and gives an up to date account of the principle industrial applications. By covering basic thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) including the new approach of Fast Scanning DSC, together with dynamic mechanical analysis (DMA /TMA) methods, then developing the discussion to encompass industrial applications, the book serves as an ideal introduction to the technology for new users. With a strong focus on practical issues and relating the measurements to the physical behaviour of the materials under test, the book will also serve as an important reference for experienced analysts.

Thermal Analysis Of Plastics

Author: Gottfried W. Ehrenstein
Publisher: Hanser Verlag
ISBN: 9781569903629
Size: 52.51 MB
Format: PDF, ePub, Mobi
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Thermal analysis has proven to be one of the most important and meaningful test methods in the plastics industry and in testing laboratories. Although thermal analysis is used for fundamental studies related to materials science of polymers, its power lies in understanding this behavior during manufacturing processes. This understanding aids in process optimization, reduction of manufacturing cycle times, failure analysis as well as overall improvement of the material properties of the finished product, to name a few. In this book, the different test methods and their variations are described in detail, emphasizing the principles and their application in practice. Using practical examples, different approaches to problem solving are presented with a focus on the interpretation of the experimental results. Thermal analysis provides information on important properties of plastic materials, such as nucleation, crystallization, degree of crystallinity, recrystallization, melting and solidification, glass transition, curing and postcuring, thermal stability, thermal expansion, relaxation of orientation and internal stresses, pvT-data, and others.

Microfabrication Of An Implantable Silicone Microelectrode An Epiretinal Prosthesis

Author: Mariam Nader Maghribi
Publisher:
ISBN:
Size: 35.18 MB
Format: PDF, Mobi
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Millions of people suffering from diseases such as retinitis pigmentosa and macular degeneration are legally blind due to the loss of photoreceptor function. Fortunately a large percentage of the neural cells connected to the photoreceptors remain viable, and electrical stimulation of these cells has been shown to result in visual perception. These findings have generated worldwide efforts to develop a retinal prosthesis device, with the hope of restoring vision. Advances in microfabrication, integrated circuits, and wireless technologies provide the means to reach this challenging goal. This dissertation describes the development of innovative silicone-based microfabrication techniques for producing an implantable microelectrode array. The microelectrode array is a component of an epiretinal prosthesis being developed by a multi-laboratory consortium. This array will serve as the interface between an electronic imaging system and the human eye, directly stimulating retinal neurons via thin film conducting traces. Because the array is intended as a long-term implant, vital biological and physical design requirements must be met. A retinal implant poses difficult engineering challenges due to the size of the intraocular cavity and the delicate retina. Not only does it have to be biocompatible in terms of cytotoxicity and degradation, but it also has to be structurally biocompatible, with regard to smooth edges and high conformability; basically mimicking the biological tissue. This is vital to minimize stress and prevent physical damage to the retina. Also, the device must be robust to withstand the forces imposed on it during fabrication and implantation. In order to meet these biocompatibility needs, the use of non-conventional microfabrication materials such as silicone is required. This mandates the enhancement of currently available polymer-based fabrication techniques and the development of new microfabrication methods. Through an iterative process, devices were designed, fabricated, tested and implanted into a canine eye. Metal traces were embedded within a thin substrate fabricated using poly (dimethyl siloxane) (PDMS), an inert biocompatible elastomeric material with high oxygen permeability and low water permeability. Due to its highly conformable nature, PDMS contacted the curved retinal surface uniformly. Fundamental material characteristics were examined to develop reliable and repeatable fabrication processes.

Eapad

Author: Yoseph Bar-Cohen
Publisher: Society of Photo Optical
ISBN:
Size: 73.27 MB
Format: PDF, Mobi
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Mechanical Analysis Of Electronic Packaging Systems

Author: Mckeown
Publisher: CRC Press
ISBN: 9780824770334
Size: 80.23 MB
Format: PDF, ePub, Docs
View: 7055
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"Fills the niche between purely technical engineering texts and sophisticated engineering software guides-providing a pragmatic, common sense approach to analyzing and remedying electronic packaging configuration problems. Combines classical engineering techniques with modern computing to achieve optimum results in assessment cost and accuracy."