Author: National Research Council
Publisher: National Academies Press
ISBN: 030917595X
Category : Technology & Engineering
Languages : en
Pages : 98
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Book Description
The major objective of this book was to identify issues related to the introduction of new materials and the effects that advanced materials will have on the durability and technical risk of future civil aircraft throughout their service life. The committee investigated the new materials and structural concepts that are likely to be incorporated into next generation commercial aircraft and the factors influencing application decisions. Based on these predictions, the committee attempted to identify the design, characterization, monitoring, and maintenance issues that are critical for the introduction of advanced materials and structural concepts into future aircraft.
Author: Xiao-Su Yi
Publisher: Springer
ISBN: 981105696X
Category : Technology & Engineering
Languages : en
Pages : 786
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Book Description
This book is the first of two volumes providing comprehensive coverage of the fundamental knowledge and technology of composite materials. It covers a variety of design, fabrication and characterization methods as applied to composite materials, particularly focusing on the fiber-reinforcement mechanism and related examples. It is ideal for graduate students, researchers, and professionals in the fields of Materials Science and Engineering, and Mechanical Engineering.
Author: C. T. Sun
Publisher: CRC Press
ISBN: 0849315018
Category : Technology & Engineering
Languages : en
Pages : 1685
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Book Description
Author: Russian Academy of Sciences
Publisher: National Academies Press
ISBN: 0309102456
Category : Political Science
Languages : en
Pages : 256
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Book Description
In January-February 2005, the National Academies Committee on Counterterrorism Challenges for Russia and the United States and the Russian Academy of Sciences Standing Committee on Counterterrorism held a workshop on urban terrorism in Washington, D.C. Prior to the workshop, three working groups convened to focus on the topics of energy systems vulnerabilities, transportation systems vulnerabilities, and cyberterrorism issues. The working groups met with local experts and first responders, prepared reports, and presented their findings at the workshop. Other workshop papers focused on various organizations' integrated response to acts of urban terrorism, recent acts of terrorism, radiological terrorism, biological terrorism, cyberterrorism, and the roots of terrorism.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309097150
Category : Technology & Engineering
Languages : en
Pages : 80
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Book Description
Advanced polymer matrix composites (PMC) have many advantages such as light weight and high specific strength that make them useful for many aerospace applications. Enormous uncertainty exists, however, in predicting long-term changes in properties of PMCs under extreme environmental conditions, which has limited their use. To help address this issue, the Department of Defense requested a study from the NRC to identify the barriers and limitations to the use of PMCs in extreme environments. The study was to focus on issues surrounding methodologies for predicting long-term performance. This report provides a review of the challenges facing application of PMCs in extreme environments, the current understanding of PMC properties and behavior, an analysis of the importance of data in developing effective models, and recommendations for improving long-term predictive methodologies.
Author: Fuh-Gwo Yuan
Publisher: Woodhead Publishing
ISBN: 0081001584
Category : Technology & Engineering
Languages : en
Pages : 516
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Book Description
Structural Health Monitoring (SHM) in Aerospace Structures provides readers with the spectacular progress that has taken place over the last twenty years with respect to the area of Structural Health Monitoring (SHM). The widespread adoption of SHM could both significantly improve safety and reduce maintenance and repair expenses that are estimated to be about a quarter of an aircraft fleet's operating costs. The SHM field encompasses transdisciplinary areas, including smart materials, sensors and actuators, damage diagnosis and prognosis, signal and image processing algorithms, wireless intelligent sensing, data fusion, and energy harvesting. This book focuses on how SHM techniques are applied to aircraft structures with particular emphasis on composite materials, and is divided into four main parts. Part One provides an overview of SHM technologies for damage detection, diagnosis, and prognosis in aerospace structures. Part Two moves on to analyze smart materials for SHM in aerospace structures, such as piezoelectric materials, optical fibers, and flexoelectricity. In addition, this also includes two vibration-based energy harvesting techniques for powering wireless sensors based on piezoelectric electromechanical coupling and diamagnetic levitation. Part Three explores innovative SHM technologies for damage diagnosis in aerospace structures. Chapters within this section include sparse array imaging techniques and phase array techniques for damage detection. The final section of the volume details innovative SHM technologies for damage prognosis in aerospace structures. This book serves as a key reference for researchers working within this industry, academic, and government research agencies developing new systems for the SHM of aerospace structures and materials scientists. - Provides key information on the potential of SHM in reducing maintenance and repair costs - Analyzes current SHM technologies and sensing systems, highlighting the innovation in each area - Encompasses chapters on smart materials such as electroactive polymers and optical fibers
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309175933
Category : Technology & Engineering
Languages : en
Pages : 83
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Book Description
The two principal objectives of this book were (1) to identify promising materials technologies, design issues (both overall and for individual components), and fire performance parameters (both full scale and for individual components) that, if properly optimized, would lead to improved fire and smoke resistance of materials and components used in aircraft interiors; and (2) to identify long-range research directions that hold the most promise for producing predictive modeling capability, new advanced materials, and the required product development to achieve totally fire-resistant interiors in future aircrafts. The emphasis of the study is on long-term innovation leading to impacts on fire worthiness of aircraft interiors ten to twenty years hence.
Author: United States. Federal Aviation Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 228
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Book Description
Author: Krishnan K. Sankaran
Publisher: Elsevier
ISBN: 0128120258
Category : Technology & Engineering
Languages : en
Pages : 508
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Book Description
Metallurgy and Design of Alloys with Hierarchical Microstructures covers the fundamentals of processing-microstructure-property relationships and how multiple properties are balanced and optimized in materials with hierarchical microstructures widely used in critical applications. The discussion is based principally on metallic materials used in aircraft structures; however, because they have sufficiently diverse microstructures, the underlying principles can easily be extended to other materials systems. With the increasing microstructural complexity of structural materials, it is important for students, academic researchers and practicing engineers to possess the knowledge of how materials are optimized and how they will behave in service. The book integrates aspects of computational materials science, physical metallurgy, alloy design, process design, and structure-properties relationships, in a manner not done before. It fills a knowledge gap in the interrelationships of multiple microstructural and deformation mechanisms by applying the concepts and tools of designing microstructures for achieving combinations of engineering properties—such as strength, corrosion resistance, durability and damage tolerance in multi-component materials—used for critical structural applications. - Discusses the science behind the properties and performance of advanced metallic materials - Provides for the efficient design of materials and processes to satisfy targeted performance in materials and structures - Enables the selection and development of new alloys for specific applications based upon evaluation of their microstructure as illustrated in this work
Author: Diego Galar
Publisher: CRC Press
ISBN: 1000518264
Category : Technology & Engineering
Languages : en
Pages : 491
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Book Description
Maintenance combines various methods, tools, and techniques in a bid to reduce maintenance costs while increasing the reliability, availability, and security of equipment. Condition-based maintenance (CBM) is one such method, and prognostics forms a key element of a CBM program based on mathematical models for predicting remaining useful life (RUL). Prognostics and Remaining Useful Life (RUL) Estimation: Predicting with Confidence compares the techniques and models used to estimate the RUL of different assets, including a review of the relevant literature on prognostic techniques and their use in the industrial field. This book describes different approaches and prognosis methods for different assets backed up by appropriate case studies. FEATURES Presents a compendium of RUL estimation methods and technologies used in predictive maintenance Describes different approaches and prognosis methods for different assets Includes a comprehensive compilation of methods from model-based and data-driven to hybrid Discusses the benchmarking of RUL estimation methods according to accuracy and uncertainty, depending on the target application, the type of asset, and the forecast performance expected Contains a toolset of methods and a way of deployment aimed at a versatile audience This book is aimed at professionals, senior undergraduates, and graduate students in all interdisciplinary engineering streams that focus on prognosis and maintenance.
