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Reliability Of Damage Detection In Advanced Composite Aircraft Structures
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Book Synopsis Reliability of Damage Detection in Advanced Composite Aircraft Structures by : Great Britain. Civil Aviation Authority. Safety Regulation Group
Download or read book Reliability of Damage Detection in Advanced Composite Aircraft Structures written by Great Britain. Civil Aviation Authority. Safety Regulation Group and published by . This book was released on 2013-01-30 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon fibre reinforced composite structures are being used for up to 50% of the airframe weight in modern airliner designs, including pressurised fuselage barrels and main wings. Composite materials are susceptible to damage from inadvertent impacts. The damage takes the form of surface dents often associated with subsurface delaminations of a significantly greater area than the visible dent. While staff in the aviation industry are familiar with metallic structures and how they respond to accidental impacts, pilots, maintenance staff and ground crew may be less familiar with the way in which composite materials respond to impacts, making them less able to recognise and thus detect, a damaged composite structure. This study was performed in order to establish the appearance of surface flaws arising from impact to a polymer composite aircraft structure, and then to determine the relation between detection reliability using visual inspection procedures and the size and shape of surface flaws.
Book Synopsis Detection and Characterization of Hail Impact Damage in Carbon Fiber Aircraft Structures by : Stephen O. Neidigk
Download or read book Detection and Characterization of Hail Impact Damage in Carbon Fiber Aircraft Structures written by Stephen O. Neidigk and published by . This book was released on 2017 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the use of advanced composite materials continues to grow in the aviation industry, damage-detection techniques need to be developed and tested. Impact damage on aluminum aircraft structures can be detected from obvious surface indications. This is not the case with composite aircraft structures. Large interply delaminations and substructure disbonding may occur as a result of an impact, often leaving no visual indications of damage. This project investigates the use of various nondestructive inspection techniques to detect hail impact damage in solid laminate aircraft structures ranging from simple flat plate panels to full-scale representative fuselage structures.
Book Synopsis Reliability-based Methods Applied to the Design of Damage Tolerant Aircraft Structures by : David Timothy Rusk
Download or read book Reliability-based Methods Applied to the Design of Damage Tolerant Aircraft Structures written by David Timothy Rusk and published by . This book was released on 2000 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Probabilistic Design of Damage Tolerant Composite Aircraft Structures by :
Download or read book Probabilistic Design of Damage Tolerant Composite Aircraft Structures written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present document describes the efforts under Memorandum of Cooperation between the Federal Aviation Administration (FAA), USA, and the Central Aero-Hydrodynamic Institute (TsAGI), Russian Federation. Under this effort, a methodology for calculating reliability of composite aircraft structures was developed and is contained in software Probabilistic Design of Damage Tolerant Composite Structures (ProDeCompoS). In addition, background data culled from Russian usage of composite aircraft structures was compiled to use with ProDeCompoS. This includes statistical data of damage occurrence, effectiveness of repair, and test data and computational methods to determine residual strength for damaged composite laminate. The methodology and use of ProDeCompoS was demonstrated by calculating the reliability of four composite.
Book Synopsis Damage Tolerance in Advanced Composites by : Robert L. Sierakowski
Download or read book Damage Tolerance in Advanced Composites written by Robert L. Sierakowski and published by Routledge. This book was released on 2018-12-13 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: This recent book provides a detailed presentation of damage tolerance assessment and characterization methods for advanced composites, as well as an examination of the role of damage tolerance in the design of composites. Included are analytical models for different types of damage in different composite materials. Tables provide helpful reference
Book Synopsis Structural Health Monitoring Damage Detection Systems for Aerospace by : Markus G. R. Sause
Download or read book Structural Health Monitoring Damage Detection Systems for Aerospace written by Markus G. R. Sause and published by Springer Nature. This book was released on 2021 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book presents established methods of structural health monitoring (SHM) and discusses their technological merit in the current aerospace environment. While the aerospace industry aims for weight reduction to improve fuel efficiency, reduce environmental impact, and to decrease maintenance time and operating costs, aircraft structures are often designed and built heavier than required in order to accommodate unpredictable failure. A way to overcome this approach is the use of SHM systems to detect the presence of defects. This book covers all major contemporary aerospace-relevant SHM methods, from the basics of each method to the various defect types that SHM is required to detect to discussion of signal processing developments alongside considerations of aerospace safety requirements. It will be of interest to professionals in industry and academic researchers alike, as well as engineering students. This article/publication is based upon work from COST Action CA18203 (ODIN - http://odin-cost.com/), supported by COST (European Cooperation in Science and Technology). COST (European Cooperation in Science and Technology) is a funding agency for research and innovation networks. Our Actions help connect research initiatives across Europe and enable scientists to grow their ideas by sharing them with their peers. This boosts their research, career and innovation.
Book Synopsis Damage Tolerance of Metallic Aircraft Structures by : Sérgio M. O. Tavares
Download or read book Damage Tolerance of Metallic Aircraft Structures written by Sérgio M. O. Tavares and published by Springer. This book was released on 2018-08-06 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a state-of-the-art review of the fail-safe and damage tolerance approaches, allowing weight savings and increasing aircraft reliability and structural integrity. The application of the damage tolerance approach requires extensive know-how of the fatigue and fracture properties, corrosion strength, potential failure modes and non-destructive inspection techniques, particularly minimum detectable defect and inspection intervals. In parallel, engineering practice involving damage tolerance requires numerical techniques for stress analysis of cracked structures. These evolved from basic mode I evaluations using rough finite element approaches, to current 3D modeling based on energetic approaches as the VCCT, or simulation of joining processes. This book provides a concise introduction to this subject.
Book Synopsis Prediction of Fire Damage to Composite Aircraft Structures by : Hugh L. N. McManus
Download or read book Prediction of Fire Damage to Composite Aircraft Structures written by Hugh L. N. McManus and published by . This book was released on 1993 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The response of advanced composite structures to fire was investigated. An analytical technique originally developed for ablative materials was adapted to this problem. The technique includes calculation of heat transfer, chemical degradation, production and flow of decomposition gasses and resulting internal pressures, stresses, and failure. Sample analyses illustrated the behavior of composite structures exposed to fire. Simple experiments qualitatively confirmed the analytic results, and provided additional insights. Advantages of composite structures included very long bum-through times, and self insulation of thick structures through blistering. Disadvantages included vulnerability of thin structures and creation of difficult to detect impact-like damage from even brief exposure to fire. Keywords: composite materials, analytical methods, numerical models, fire, high temperatures, damage, aircraft structures, safety.
Book Synopsis Health Monitoring of Aerospace Structures by : Wieslaw Staszewski
Download or read book Health Monitoring of Aerospace Structures written by Wieslaw Staszewski and published by John Wiley & Sons. This book was released on 2004-04-02 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing quality research for the reader, this title encompasses all the recent developments in smart sensor technology for health monitoring in aerospace structures, providing a valuable introduction to damage detection techniques. Focussing on engineering applications, all chapters are written by smart structures and materials experts from aerospace manufacturers and research/academic institutions. This key reference: Discusses the most important aspects related to smart technologies for damage detection; this includes not only monitoring techniques but also aspects related to specifications, design parameters, assessment and qualification routes. Presents real case studies and applications; this includes in-flight tests; the work presented goes far beyond academic research applications. Displays a balance between theoretical developments and engineering applications
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 D-sight Technique for Rapid Impact Damage Detection on Composite Aircraft Structures by : J. H. Heida
Download or read book D-sight Technique for Rapid Impact Damage Detection on Composite Aircraft Structures written by J. H. Heida and published by . This book was released on 1997 with total page 11 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 Detection of Damage in a Composite Structure Using Guided Waves by : Harsh Kumar Baid
Download or read book Detection of Damage in a Composite Structure Using Guided Waves written by Harsh Kumar Baid and published by . This book was released on 2012 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced composites are being increasingly used in state-of-the-art aircraft and aerospace structures. In spite of their many advantages composite materials are highly susceptible to hidden flaws that may occur at any time during the life of a structure and if undetected, may cause sudden and catastrophic failure of the entire structure. An example of such a structural component is the "honeycomb composite" in which thin composite skins are bonded with adhesives to the two faces of extremely lightweight and relatively thick metallic honeycombs. These components are often used in aircraft and aerospace structures due to their high strength to weight ratio. Unfortunately, the bond between the honeycomb and the skin may degrade with age and service loads can lead to separation of the load-bearing skin from the honeycomb (called "disbonds") and compromise the safety of the structure. The need for model-based studies is widely recognized in the NDE community and a great deal of work has indeed been carried out for simple, metallic structures. However the literature on composite structures is rather limited due to the enormous mathematical complexity involved in dealing with them. In this dissertation a comprehensive approach including numerical (finite element method) and analytical method is used for calculating the ultrasonic wavefield in composite structural components with and without defects. Laboratory experiments are carried out on a composite honeycomb specimen containing damage to the skin or a localized disbond at the skin-core interfaces. The skin and the honeycomb composite are considered separately in order to understand the interaction of ultrasonic waves with damage in the two structures. The waves are launched into the specimen using a broadband PZT transducer and are detected by a distributed array of identical transducers located on the surface of the specimen. The guided wave components of the signals are shown to be strongly influenced by the presence of a defect in the skin or the honeycomb composite structure. The experimentally observed results are used to develop an autonomous scheme to locate the disbonds. The calculated results from the simulations are compared with existing and new experiments to validate and improve the models. The results should be very useful in model-based understanding of ultrasonic data collected during nondestructive inspection and evaluation (NDI/NDE) of advanced aircraft and aerospace structure and in the development of reliable health monitoring systems in the structures.
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 Repair of Advanced Composites for Aerospace Applications by : Mohamed Thariq Hameed Sultan
Download or read book Repair of Advanced Composites for Aerospace Applications written by Mohamed Thariq Hameed Sultan and published by CRC Press. This book was released on 2022-03-22 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the repair of polymer composites for critical components in aerospace industries. It also covers the complexities of failure and repair of composites, types of fiber reinforcement and bonding. It includes special topics on damage assessment using on-site inspection (NDT and THz techniques) and automated repair processes for reliability and repeatability. Repair of Advanced Composites for Aerospace Applications also describes the characterization, modelling and simulation of the composites' damage mechanisms with respect to specific environments and applications. Failures associated with various composite repairing techniques for aerospace applications are also covered. Key Features: • Addresses the composites development process including damage detection and repair for aerospace applications. • Covers research on the multi-scale process modelling, material modelling, self-healing, repairing and their analyses. • Concentrates on the repair of composites for weight-sensitive applications in automobiles and aerospace. • Analyses perspectives on materials processing and material design. • Details composite joints, their failure, and operations of aircraft component in various environments. This book is aimed at researchers, professionals and graduate students in composite materials, manufacturing, aerospace engineering, advanced materials design and manufacturing, composite materials repair, and hybrid materials repair.
Book Synopsis Reliability Assessment of Aircraft Structures Subject to Accidental Damage by : Cary Huang
Download or read book Reliability Assessment of Aircraft Structures Subject to Accidental Damage written by Cary Huang and published by . This book was released on 2006 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Damage Detection in Aircraft Structures by Multi-sensor Ultrasonic Inspection by : Gaetano Restivo
Download or read book Damage Detection in Aircraft Structures by Multi-sensor Ultrasonic Inspection written by Gaetano Restivo and published by . This book was released on 2004 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
