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Damage Detection In Composite Materials
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Book Synopsis Damage Detection in Composite Materials by : John E. Masters
Download or read book Damage Detection in Composite Materials written by John E. Masters and published by ASTM International. This book was released on 1992 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of 16 papers from an international symposium in San Antonio, November 1990, focusing on the necessary coordination between materials scientists, stress analysts, and non-destructive evaluation specialists, for successfully designing, building, certifying, and maintaining composite struc
Book Synopsis Damage Detection in Composite Materials by : John E. Master
Download or read book Damage Detection in Composite Materials written by John E. Master and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Virtual Fields Method by : Fabrice Pierron
Download or read book The Virtual Fields Method written by Fabrice Pierron and published by Springer Science & Business Media. This book was released on 2012-03-21 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Virtual Fields Method: Extracting Constitutive Mechanical Parameters from Full-field Deformation Measurements is the first and only one on the Virtual Fields Method, a recent technique to identify materials mechanical properties from full-field measurements. It contains an extensive theoretical description of the method as well as numerous examples of application to a wide range of materials (composites, metals, welds, biomaterials etc.) and situations(static, vibration, high strain rate etc.). Finally, it contains a detailed training section with examples of progressive difficulty to lead the reader to program the VFM. This is accompanied with a set of commented Matlab programs as well as with a GUI Matlab based software for more general situations.
Book Synopsis Defects and Damage in Composite Materials and Structures by : Rikard Benton Heslehurst
Download or read book Defects and Damage in Composite Materials and Structures written by Rikard Benton Heslehurst and published by CRC Press. This book was released on 2014-04-21 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advantages of composite materials include a high specific strength and stiffness, formability, and a comparative resistance to fatigue cracking and corrosion. However, not forsaking these advantages, composite materials are prone to a wide range of defects and damage that can significantly reduce the residual strength and stiffness of a structu
Book Synopsis Damage Detection in Composite Materials Using Piezoelectric Elements by : Xianghua Jian
Download or read book Damage Detection in Composite Materials Using Piezoelectric Elements written by Xianghua Jian and published by . This book was released on 1995 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Damage and Repair of Aerospace Composite Materials by : Charles Lu
Download or read book Damage and Repair of Aerospace Composite Materials written by Charles Lu and published by SAE International. This book was released on 2019-04-30 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Damage and Repair of Aerospace Composite Materials reports the latest developments on the detection and repair of composite structures from the perspective of ten SAE technical papers, especially chosen for this book. This micro-collection of papers offers an overview of composite utilization on large-scale commercial aircraft as well as an outline of general damage inspection and repair of composite structures. On the damage detection side, really important techniques are explained, including: • Porosity inspection of large composite panels. • Damage detection of large composites using acoustic ultrasonic and radio frequency methods. • Discrimination of damaged and undamaged composite panels using acoustic emission sensors. • Automated defect inspection system integrated in the production line by utilizing laser sensors and cameras. The latest studies in damage repair of composite structures are also presented, including: • the design of a bonded repair technique for multilayer laminate composite panels. • the analysis on the performance of bolted repair vs. bonded repair. • the method for economically repairing the holes on composites. • the development of a novel cutting tool for the scarf repair of composites. • the use the 3D-printing technology to repair gaps and steps in large composite panels
Book Synopsis Energy and Sustainable Futures by : Iosif Mporas
Download or read book Energy and Sustainable Futures written by Iosif Mporas and published by Springer Nature. This book was released on 2021-04-29 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book presents papers displayed in the 2nd International Conference on Energy and Sustainable Futures (ICESF 2020), co-organised by the University of Hertfordshire and the University Alliance DTA in Energy. The research included in this book covers a wide range of topics in the areas of energy and sustainability including: • ICT and control of energy;• conventional energy sources;• energy governance;• materials in energy research;• renewable energy; and• energy storage. The book offers a holistic view of topics related to energy and sustainability, making it of interest to experts in the field, from industry and academia.
Book Synopsis Composite Materials Technology by : S.M. Sapuan
Download or read book Composite Materials Technology written by S.M. Sapuan and published by CRC Press. This book was released on 2009-12-23 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Artificial neural networks (ANN) can provide new insight into the study of composite materials and can normally be combined with other artificial intelligence tools such as expert system, genetic algorithm, and fuzzy logic. Because research on this field is very new, there is only a limited amount of published literature on the subject.Compiling in
Book Synopsis Damage Detection in Composite Materials Using Carbon Nanotube Threads as Sensors by : Maruthi Amardeep Sri Vatsavaya
Download or read book Damage Detection in Composite Materials Using Carbon Nanotube Threads as Sensors written by Maruthi Amardeep Sri Vatsavaya and published by . This book was released on 2011 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite materials have excellent mechanical and thermal properties and are the materials of choice for many applications. Even so, the low inter-laminar mechanical properties and poor impact resistance of fiber reinforced composite materials has limited their use. Broader use of composites would be possible if, there was a continuous structural monitoring that could ensure the safe operation and economical maintenance of composites. The monitoring system can be made reliable and economical if the sensors could be embedded within the material. This thesis proposes a new approach to monitor the state of strain and delamination in composite materials. The method is to use carbon nanotube thread as a continuous sensor that can be placed wherever desired inside or onto the composite material. This thesis indicates the approach is new, simple and reliable. The significance of this continuous sensor is that it opens up development of the next generation of composite materials and structures that continuously monitor their state of strain and damage. This will provide a better prediction of their life span and allow the possibility of applying corrective action if neededThis thesis investigates structural health monitoring of simple composites based on monitoring the electrical resistance of fine threads used as embedded sensors. The threads are spun from Carbon Nanotube arrays. The threads exhibit a tailorable piezo-resistive property, which is the basis of the sensor operation. It is shown that the presence of CNT threads in simple specimens does not cause any significant voids or areas of stress concentrations, which might affect the overall mechanical properties of the material. Two types of sensor configurations were evaluated; a straight sensor and a stitched sensor. The behavior of these sensors was compared under tensile and bending loads in composite materials. These sensors are tested both for damage detection and strain sensing and successfully detected when the damage reached the thread. The continuous thread sensor may be an important component in the design of future aerospace composite structures that operate safely and economically.
Book Synopsis Damage Detection in Composite Materials Using Frequency Response Methods by : Seth Stovack Kessler
Download or read book Damage Detection in Composite Materials Using Frequency Response Methods written by Seth Stovack Kessler and published by . This book was released on 2001 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cost-effective and reliable damage detection is critical for the utilization of composite materials. This paper presents part of an experimental and analytical survey of candidate methods for the in-situ detection of damage in composite materials. The experimental results are presented for the application of modal analysis techniques applied to graphite/epoxy specimens containing representative damage modes. Changes in natural frequencies and modes were found using a laser vibrometer, and 2-D finite element models were created for comparison with the experimental results. The models accurately predicted the response of the specimens at low frequencies, but coalescence of higher frequency modes makes mode-dependant damage detection difficult for structural applications. The frequency response method was found to be reliable for detecting even small amounts of damage in a simple composite structure, however the potentially important information about damage type, size, location and orientation were lost using this method since several combinations of these variables can yield identical response signatures.
Book Synopsis Fiber-optic Impact Damage Detection of Composite Materials by : R. M. Measures
Download or read book Fiber-optic Impact Damage Detection of Composite Materials written by R. M. Measures and published by . This book was released on 1988 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Damage and Failure of Composite Materials by : Ramesh Talreja
Download or read book Damage and Failure of Composite Materials written by Ramesh Talreja and published by Cambridge University Press. This book was released on 2012-06-07 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bringing together materials mechanics and modelling, this book provides a complete guide to damage mechanics of composite materials for engineers.
Book Synopsis Investigation of Damage Detection Methods for Laminated Composite Materials Using Full Field Digital Image Correlation by : Crown James Qambela
Download or read book Investigation of Damage Detection Methods for Laminated Composite Materials Using Full Field Digital Image Correlation written by Crown James Qambela and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The aeronautical industry is among many which have focused on material with a high strength to weight ratios in order to accomplish as much efficiency as possible during flight. Among material of high strength to weight ratios are composite materials (Matthews and Rawlings, 1999). A composite material is defined by Lee (1989) as the combination of two or more materials of different characteristics (composition or form) which remain bonded together. This yields a material which essentially has all the beneficial attributes of its parent materials and little of their shortcomings. In the aeronautical field composite materials are used to construct components such as airplane wings spoilers and panels, vertical and horizontal stabilizers etc. (Baker et al., 2004). The wide use and range of composites has led to the development of various techniques for damage detection. One of the common types of damage which composites experience is barely visible impact damage, which can be caused by dropped objects during construction or maintenance. Laminated composites, unlike isotropic materials such as steel, show essentially no yielding prior to complete failure. This makes it crucial to assess them for damage before use. This research presents an investigation into the possibility of damage detection in laminated composites by making use of full field digital image correlation (DIC). The technique is often employed to assess the structural deformation characteristics of components under various loading conditions, which can then be correlated with finite element assessments. In this research three experimental methods are explored in terms of their performance in detecting barely visible impact damage: 1) modal analysis, 2) full field DIC under static loading, 3) full field DIC under dynamic loading. Modal analysis results showed no noticeable shifts in natural frequencies between an undamaged and damaged carbon/epoxy woven laminated composite, when damage was induced via static point load application at the center of the specimen. Full field DIC under dynamic loading namely, drop impact tests designed to induce no addition damage, revealed no change in peak out-of-plane displacements between an undamaged and damaged specimen. The technique proved effective only when severe visible damage was induced, which falls out of the scope of the research. Prior to full field DIC testing under static loading a number of experimental exercises were performed to check the accuracy of the method when measuring rigid body motion and out-of-plane displacements. The acquired results were compared to independent measurements obtained using a micrometer for rigid body motion and an eddy current probe for out-of-plane displacements. The method of full field DIC under static loading condition showed significant reduction in stiffness between the undamaged and damaged composite, with increases in out-of-plane peak displacement and von Mises strain fields. The success of full field DIC under static loading paved the way forward for the investigation of damage detection in laminated composites under various impact energies (i.e. centered impact and off-center impact) resulting in barely visible impact damage. The finding revealed an increase in compliance of the impacted laminated composite due to the damage. The barely visible damage can be detected using full field DIC only when the loading or excitation is located around the damaged region. There was no noticeable change in out-of-plane displacement fields of the specimens that were subjected to centered impact and off-center impact. Significant changes in von Mises strain fields exist between the undamaged and damaged laminated composites with centered impact.
Book Synopsis Ultrasonic and Advanced Methods for Nondestructive Testing and Material Characterization by : Chi-hau Chen
Download or read book Ultrasonic and Advanced Methods for Nondestructive Testing and Material Characterization written by Chi-hau Chen and published by World Scientific. This book was released on 2007 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrasonic methods have been very popular in nondestructive testing and characterization of materials. This book deals with both industrial ultrasound and medical ultrasound. The advantages of ultrasound include flexibility, low cost, in-line operation, and providing data in both signal and image formats for further analysis. The book devotes 11 chapters to ultrasonic methods. However, ultrasonic methods can be much less effective with some applications. So the book also has 14 chapters catering to other or advanced methods for nondestructive testing or material characterization. Topics like structural health monitoring, Terahertz methods, X-ray and thermography methods are presented. Besides different sensors for nondestructive testing, the book places much emphasis on signal/image processing and pattern recognition of the signals acquired.
Book Synopsis Fatigue Damage Detection in Composite Materials Using Thermosonics Technique by : Xiaoyan Han
Download or read book Fatigue Damage Detection in Composite Materials Using Thermosonics Technique written by Xiaoyan Han and published by . This book was released on 2000 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structural Health Monitoring For Advanced Composite Structures by : M H Ferri Aliabadi
Download or read book Structural Health Monitoring For Advanced Composite Structures written by M H Ferri Aliabadi and published by World Scientific. This book was released on 2017-12-18 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural health monitoring (SHM) is a relatively new and alternative way of non-destructive inspection (NDI). It is the process of implementing a damage detection and characterization strategy for composite structures. The basis of SHM is the application of permanent fixed sensors on a structure, combined with minimum manual intervention to monitor its structural integrity. These sensors detect changes to the material and/or geometric properties of a structural system, including changes to the boundary conditions and system connectivity, which adversely affect the system's performance.This book's primary focus is on the diagnostics element of SHM, namely damage detection in composite structures. The techniques covered include the use of Piezoelectric transducers for active and passive Ultrasonics guided waves and electromechanical impedance measurements, and fiber optic sensors for strain sensing. It also includes numerical modeling of wave propagation in composite structures. Contributed chapters written by leading researchers in the field describe each of these techniques, making it a key text for researchers and NDI practitioners as well as postgraduate students in a number of specialties including materials, aerospace, mechanical and computational engineering.
Book Synopsis Structural Integrity and Monitoring for Composite Materials by : Ahmad Hamdan Ariffin
Download or read book Structural Integrity and Monitoring for Composite Materials written by Ahmad Hamdan Ariffin and published by Springer Nature. This book was released on 2023-01-27 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on the recent technology and advancement in structural integrity and monitoring systems in composite materials. Composites have been widely used in automotive, aerospace and wind turbine industries, therefore it is important to develop state of the art technology to monitor and manage the damage tolerance and durability. This book explores the challenge of a monitoring system in a composite and presents a real-time system which has advantages for damage detection, localization, assessment and life prediction compared to the Non-Destructive Testing (NDT). It will also present the modelling and prediction of failure in a composite material based on computational analysis of the characteristics and properties of the composite material based on fiber and matrix properties. This book will benefit lecturers, students, researchers, engineers and industrialist who are working in the civil, mechanical engineering, automotive, aerospace and wind turbine industries.
