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Author: Glenn Washer Publisher: ISBN: Category : Bridges Languages : en Pages : 0
Book Description
The proposed research will develop the application of Raman Spectroscopy as a nondestructive evaluation tool for the condition assessment of carbon fiber composites. Composite materials are increasingly being used in engineered structures and components, ranging from highway bridges to airframes and pressure vessels. These materials have a high strength to mass ratio, making them idealmaterials for inclusion in space vehicles, hydrogen cars and aircraft. There exists a critical need to develop nondestructive evaluation technologies that can be used to assess the condition of these materials in-situ, such that components and systems can be managed anrepaired during their service lives. To date, NDE technologies developed for the inspection of composite materials have focused on mechanical damage scenarios, such as impact and fatigue. There is growing concern that environmental degradation of these materials leads to reduced strength during their service lives, and presently there are no NDE technologies capable of characterizing the degradation of composite materials in-situ. The proposed research will investigate if Raman spectroscopy can be used for the condition assessment of composite materials during their service lives. Raman spectroscopy is a laser technique that is sensitive to molecular interactions in ordered materials such as graphite and carbon fibers. For carbon materials, the technique has been shown tobe sensitive to applied elastic stresses and structural order on a molecular level. Traditionally a laboratory technique, new instrumentation implementing fiber-optic probes has extended the potential for this technology beyond the laboratory. The potential exist for implementation as a hand-held device for the inspection of engineering components and structures, including bridges and hydrogen vehicles.
Author: Glenn Washer Publisher: ISBN: Category : Bridges Languages : en Pages : 0
Book Description
The proposed research will develop the application of Raman Spectroscopy as a nondestructive evaluation tool for the condition assessment of carbon fiber composites. Composite materials are increasingly being used in engineered structures and components, ranging from highway bridges to airframes and pressure vessels. These materials have a high strength to mass ratio, making them idealmaterials for inclusion in space vehicles, hydrogen cars and aircraft. There exists a critical need to develop nondestructive evaluation technologies that can be used to assess the condition of these materials in-situ, such that components and systems can be managed anrepaired during their service lives. To date, NDE technologies developed for the inspection of composite materials have focused on mechanical damage scenarios, such as impact and fatigue. There is growing concern that environmental degradation of these materials leads to reduced strength during their service lives, and presently there are no NDE technologies capable of characterizing the degradation of composite materials in-situ. The proposed research will investigate if Raman spectroscopy can be used for the condition assessment of composite materials during their service lives. Raman spectroscopy is a laser technique that is sensitive to molecular interactions in ordered materials such as graphite and carbon fibers. For carbon materials, the technique has been shown tobe sensitive to applied elastic stresses and structural order on a molecular level. Traditionally a laboratory technique, new instrumentation implementing fiber-optic probes has extended the potential for this technology beyond the laboratory. The potential exist for implementation as a hand-held device for the inspection of engineering components and structures, including bridges and hydrogen vehicles.
Author: Vistasp M. Karbhari Publisher: Elsevier ISBN: 085709355X Category : Technology & Engineering Languages : en Pages : 729
Book Description
The increased use of polymer matrix composites in structural applications has led to the growing need for a very high level of quality control and testing of products to ensure and monitor performance over time. Non-destructive evaluation (NDE) of polymer matrix composites explores a range of NDE techniques and the use of these techniques in a variety of application areas.Part one provides an overview of a range of NDE and NDT techniques including eddy current testing, shearography, ultrasonics, acoustic emission, and dielectrics. Part two highlights the use of NDE techniques for adhesively bonded applications. Part three focuses on NDE techniques for aerospace applications including the evaluation of aerospace composites for impact damage and flaw characterisation. Finally, the use of traditional and emerging NDE techniques in civil and marine applications is explored in part four.With its distinguished editor and international team of expert contributors, Non-destructive evaluation (NDE) of polymer matrix composites is a technical resource for researchers and engineers using polymer matrix composites, professionals requiring an understanding of non-destructive evaluation techniques, and academics interested in this field. - Explores a range of NDE and NDT techniques and considers future trends - Examines in detail NDE techniques for adhesively bonded applications - Discusses NDE techniques in aerospace applications including detecting impact damage, ultrasonic techniques and structural health monitoring
Author: Ewen Smith Publisher: John Wiley & Sons ISBN: 1118681320 Category : Science Languages : en Pages : 248
Book Description
This book reflects the dramatic increase in the number of Raman spectrometers being sold to and used by non-expert practitioners. It contains coverage of Resonance Raman and SERS, two hot areas of Raman, in a form suitable for the non-expert. Builds Raman theory up in stages without overloading the reader with complex theory Includes two chapters on instrumentation and interpretation that shows how Raman spectra can be obtained and interpreted Explains the potential of using Raman spectroscopy in a wide variety of applications Includes detailed, but concise information and worked examples
Author: Howell G. M. Edwards Publisher: Springer Nature ISBN: 3031143795 Category : Science Languages : en Pages : 520
Book Description
This book addresses the application of Raman spectroscopic techniques to a range of diverse problems which arise in the study, conservation and restoration of artefacts and sites closely related to our cultural heritage as well as in authentication. These themes are naturally wider than what at first might be considered as artworks and archaeological artefacts and the topics include pigments, paintings, ceramics, glass, sculpture and patination / corrosion, textiles, industrial archaeology, the degradation and preservation of biomaterials, mummies and human skeletal remains. An interesting feature is the inclusion of modern case studies which describe specific problems and approaches to the Raman spectral analysis of items important to our cultural heritage. The text is prefaced with an introduction to the important parameters used in nondestructive Raman measurements and also highlights some future applications based upon novel miniaturised instrumentation for in-field studies and potential screening work which will identify specimens which would repay further studies in the laboratory. An attempt is made to give a snapshot of the state-of-the-art evolution since the beginning of the technique (1970s) and to point out potential further development. The book is co-edited by three international experts with many years' experience in the application of Raman spectroscopy to artworks, archaeological artefacts and in the investigation of materials and sites for cultural heritage preservation and each editor has undertaken to write individual chapters and different topics personally. The adopted approach is designed to convey the sort of information which has become available from the adoption of analytical Raman spectroscopy to different problems in the field of cultural heritage preservation through the spectral interrogation of artefacts and how the interpretation of the spectral data can assist museum curators, archaeologists and cultural heritage historians in the preservation and conservation of ancient materials and sites : a particular advantage in this respect is the ability of Raman spectroscopy to determine –generally in a strictly noninvasive procedure - at the laboratory or on-site with mobile instruments, the presence of both organic and inorganic components in a particular specimen together nondestructively without any chemical and mechanical pretreatment being undertaken, which is an essential requirement for rare and valuable samples . An important aside from this work is the means of spectral identification of ongoing biodeterioration and biological colonisation in specimens in storage and the effects of environmental deterioration such as humidity and temperature upon their integrity.
Author: Akira Otsuki Publisher: Elsevier ISBN: 0323984789 Category : Science Languages : en Pages : 842
Book Description
Non-Destructive Material Characterization Methods provides readers with a trove of theoretical and practical insight into how to implement different non-destructive testing methods for effective material characterization. The book starts with an introduction to the field before moving right into a discussion of a wide range of techniques that can be immediately implemented. Various imaging and microscopy techniques are first covered, with step-by-step insights on characterization using a polarized microscope, an atomic force microscope, computed tomography, ultrasonography, magnetic resonance imaging, infrared tomography, and more. Each chapter includes case studies, applications, and recent developments. From there, elemental assay and mapping techniques are discussed, including Raman spectroscopy, UV spectroscopy, atomic absorption spectroscopy, neutron activation analysis, and various others. The book concludes with sections covering displacement measurement techniques, large-scale facility techniques, and methods involving multiscale analysis and advanced analysis. - Provides an overview of a wide-range of NDT material characterization methods, strengths and weaknesses of these methods, when to apply them, and more - Includes eddy current sensing and imaging, ultrasonic sensing and imaging, RF and THz imaging, internet and cloud-based methods, among many others - Presents case studies, applications and other insights on putting these methods into practice
Author: Howell G. M. Edwards Publisher: Royal Society of Chemistry ISBN: 0854045228 Category : Antiques & Collectibles Languages : en Pages : 497
Book Description
Raman Spectroscopy in Archaeology and Art History highlights the important contributions Raman spectroscopy makes as a non-destructive method for characterising the chemical composition and structure and in determining the provenance and authenticity of objects of archaeological and historical importance. It brings together studies from diverse areas and represents the first dedicated work on the use of this technique in this increasingly important field. Coverage includes: An Introduction to Raman Spectroscopy, including practical aspects of Raman spectroscopy and complementary techniques; Dyes and Pigments; Artefacts; Biological Materials and Degradation; Jewellery and Precious Stones. The book contains a broad selection of real-world examples in the form of case studies to provide the reader with a true appreciation of the procedures that need to be invoked to derive spectroscopic information from some of the most challenging specimens and systems. Colour illustrations of objects of investigation and a database of 72 Raman spectra of relevant minerals are included. With its extensive examples, Raman Spectroscopy in Archaeology and Art History will be of particular interest to specialists in the field, including researchers and scientific/conservation staff in museums. Academics will find it an invaluable reference to the use of Raman spectroscopy.
Author: Glenn Washer
Author: Glenn Washer
Author: Vistasp M. Karbhari
Author: 
Author: National Institute of Standards and Technology (U.S.)
Author: Ewen Smith
Author: Howell G. M. Edwards
Author: Akira Otsuki
Author: Howell G. M. Edwards
Author: 
Author: United States. National Bureau of Standards