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Author: Yonghui Wang
Publisher: Springer Nature
ISBN: 9811943753
Category : Technology & Engineering
Languages : en
Pages : 366
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Book Description
This book develops several novel foam-filled structures and steel-concrete-steel (SCS) sandwich structures, which provides more alternatives for ensuring the safety of buildings and infrastructures under extreme loading, like impact and blast. In the first part of this book, the aluminium foam- and polyurethane foam-filled structures have been developed for dissipating impact and blast energy. Experimental and numerical studies have been conducted to obtain their behaviours under impact loading. In addition, analytical models have also been proposed to assess their energy absorption performances and facilitate the impact and blast design when using the proposed foam-filled structures. In the second part of this book, SCS sandwich structures with novel shear connectors have been developed and their behaviours under impact and blast loading have been experimentally, numerically and analytical studied. Analytical models for predicting the impact and blast responses of SCS sandwich structures have also been developed. In the third part of this book, a new steel-polyurethane foam-steel-concrete-steel (SPUFSCS) panel (i.e. the combination of foam material and SCS panel) has been developed to achieve a higher impact resistant capacity. Owing to the increasing impact and blast threats on buildings and infrastructures, the studies presented in this book are of significant importance for providing several new solutions for impact and blast enhancement.
Author: Yonghui Wang
Publisher:
ISBN: 9789811943768
Category :
Languages : en
Pages : 0
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Book Description
This book develops several novel foam-filled structures and steel-concrete-steel (SCS) sandwich structures, which provides more alternatives for ensuring the safety of buildings and infrastructures under extreme loading, like impact and blast. In the first part of this book, the aluminium foam- and polyurethane foam-filled structures have been developed for dissipating impact and blast energy. Experimental and numerical studies have been conducted to obtain their behaviours under impact loading. In addition, analytical models have also been proposed to assess their energy absorption performances and facilitate the impact and blast design when using the proposed foam-filled structures. In the second part of this book, SCS sandwich structures with novel shear connectors have been developed and their behaviours under impact and blast loading have been experimentally, numerically and analytical studied. Analytical models for predicting the impact and blast responses of SCS sandwich structures have also been developed. In the third part of this book, a new steel-polyurethane foam-steel-concrete-steel (SPUFSCS) panel (i.e. the combination of foam material and SCS panel) has been developed to achieve a higher impact resistant capacity. Owing to the increasing impact and blast threats on buildings and infrastructures, the studies presented in this book are of significant importance for providing several new solutions for impact and blast enhancement. .
Author: Yonghui Wang
Publisher: Springer Nature
ISBN: 9811943753
Category : Technology & Engineering
Languages : en
Pages : 366
Get Book Here
Book Description
This book develops several novel foam-filled structures and steel-concrete-steel (SCS) sandwich structures, which provides more alternatives for ensuring the safety of buildings and infrastructures under extreme loading, like impact and blast. In the first part of this book, the aluminium foam- and polyurethane foam-filled structures have been developed for dissipating impact and blast energy. Experimental and numerical studies have been conducted to obtain their behaviours under impact loading. In addition, analytical models have also been proposed to assess their energy absorption performances and facilitate the impact and blast design when using the proposed foam-filled structures. In the second part of this book, SCS sandwich structures with novel shear connectors have been developed and their behaviours under impact and blast loading have been experimentally, numerically and analytical studied. Analytical models for predicting the impact and blast responses of SCS sandwich structures have also been developed. In the third part of this book, a new steel-polyurethane foam-steel-concrete-steel (SPUFSCS) panel (i.e. the combination of foam material and SCS panel) has been developed to achieve a higher impact resistant capacity. Owing to the increasing impact and blast threats on buildings and infrastructures, the studies presented in this book are of significant importance for providing several new solutions for impact and blast enhancement.
Author: Nicholas J. Carlson
Publisher:
ISBN:
Category :
Languages : en
Pages : 123
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Book Description
As the importance of protective engineering and multi-hazard mitigation design has grown in recent years, the development of an effective structural protection system that aids in the preservation of life safety during blast events is an important topic of research in structural engineering. This protection is especially vital for blast and explosion mitigation, where a vehicle-borne bomb or an improvised explosive device can readily cause an under-designed structure with insufficient redundancy to undergo progressive collapse due to the removal of its first-floor columns. An especially pressing research need is the consideration of structures that require blast protection, but--due to time or budget constraints, lack of available space, unusual construction techniques or other externalities--cannot be sufficiently strengthened by traditional structural hardening techniques such as those described in the FEMA counterterrorism design primers. As an alternative, the author proposes the development of an ablative, sacrificial protective jacket, based on prior research on the use of water as hazard mitigation to protect weapon storage facilities from accidental munitions detonation. The proposed system consists of a relatively thick layer of water sandwiched between two thin layers of polyethylene film or a similar polymer membrane, with the entire assembly wrapped around or affixed to the vulnerable structural elements. The water layer is theorized to reduce the incident and reflected pressure of the blast wave through two principal modes of attenuation: the reduction of the blast wave's energy through harnessing the high enthalpy of fusion and specific heat of water (the "thermodynamic mode") and the transformation of the blast pressure into kinetic energy (the "kinetic mode"). The theoretical mitigation pathways are discussed and analyzed, and the necessary assumptions required for the jacket to mobilize its protective capacity within the short timescale of a blast event are shown to be valid--namely, that the initial disruption of the water layer by the blast wave forms an ultra-fine mist of 20 μm to 30 μm diameter droplets that can evaporate in approximately 1 ms. The investigation of the ablative ability of the proposed, 1.5 in to 6.0 in protective jackets takes the form of a series of two- and three-dimensional finite element simulations which measure the protective capacity of various water jacket volumes protecting various structures from both impact and blast. For the blast loads (scaled standoffs from 5 ft/lb1/3 and 1.25 ft/lb1/3) and structural configuration chosen, the optimum energy reduction occurs when the jacket is approximately 4.5 in thick. For cases where a thinner jacket is desired, the author used the relative energy dissipation data to derive an empirical relationship between the thickness of a jacket, the blast load it is subjected to and its predicted energy dissipation capacity. This relationship can be used by design engineers to use the proposed design method, employing the integrals of P--0 pushover curves, in order to meet important performance criteria that ensure life safety during catastrophic events.
Author: Theodor Krauthammer
Publisher: CRC Press
ISBN: 1420015427
Category : Technology & Engineering
Languages : en
Pages : 530
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Book Description
In today's world, reasonably predictable military operations have been replaced by low intensity conflicts-less predictable terrorist activities carried out by determined individuals or small groups that possess a wide range of backgrounds and capabilities. Because of the threats posed by this evolving type of warfare, civil engineers and emergency
Author: Gregory Richards
Publisher: CRC Press
ISBN: 1498764355
Category : Business & Economics
Languages : en
Pages : 219
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Book Description
Within this context, big data analytics (BDA) can be an important tool given that many analytic techniques within the big data world have been created specifically to deal with complexity and rapidly changing conditions. The important task for public sector organizations is to liberate analytics from narrow scientific silos and expand it across internally to reap maximum benefit across their portfolios of programs. This book highlights contextual factors important to better situating the use of BDA within government organizations and demonstrates the wide range of applications of different BDA techniques. It emphasizes the importance of leadership and organizational practices that can improve performance. It explains that BDA initiatives should not be bolted on but should be integrated into the organization’s performance management processes. Equally important, the book includes chapters that demonstrate the diversity of factors that need to be managed to launch and sustain BDA initiatives in public sector organizations.
Author: Varinder S. Kanwar
Publisher: Springer Nature
ISBN: 3030939367
Category : Science
Languages : en
Pages : 865
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Book Description
This volume presents select proceedings of the International Conference on Innovative Technologies for Clean and Sustainable Development (ICITCSD – 2021), held at the National Institute of Technical Teachers Training & Research and Chitkara University, Himachal Pradesh, India. It covers several important aspects of sustainable civil engineering practices, dealing with effective waste and material management, natural resources, industrial products, energy, food, transportation and shelter, environmental impact mitigation, waste minimization and management, sustainable infrastructure, and geospatial technology for sustainable and clean environment. Emphasis is placed on conserving and protecting the environment and the natural resource base essential for future development. The book includes case studies and ongoing research work from various fields related to civil engineering presented by academicians, scientists, and researchers. The book also discusses engineering solutions to sustainable development and green design issues. Special emphasis is given on qualitative guidelines for the generation, treatment, handling, transport, disposal, and recycling of wastes. The book is intended as a practice-oriented reference guide for researchers and practitioners. It will be useful for anyone working in sustainable civil engineering and related fields.
Author: S. Syngellakis
Publisher: WIT Press
ISBN: 1784663999
Category : Technology & Engineering
Languages : en
Pages : 170
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Book Description
The increasing need to protect civilian infrastructure and industrial facilities against unintentional loads arising from accidental impact and explosion events as well as terrorist attacks is of major importance. While advances have been made in recent years, many challenges remain, such as to develop more effective and efficient blast and impact mitigation approaches than those that currently exist. The primary focus remains the survivability of physical facilities and the protection of people, as well as reducing economic losses and impact on the environment, with emphasis on innovative protective technologies to support the needs of an economically growing, modern society. The application of this technology ranges from the safe transportation of people and dangerous materials to defences against natural hazards such as floods, wind, storms, tsunamis and earthquakes. Large scale testing is prohibitive and small scale laboratory testing results in scaling uncertainties. Continuing research is therefore essential to improve knowledge on how these structures behave under a variety of load actions, some of which interact making it even more complex and difficult to define. Consequently, more use of advanced numerical simulations for load and structural response calculations is common practice in industry and research. Such calculations can directly be used in design and risk assessment calculations, but also be applied to more simplified design tools and design codes. Whether numerical or analytical modelling techniques are employed, experimental validation is vital for there to be acceptance of the approach to be used. The included papers, presented at the 16th International Conference on Structures under Shock and Impact, highlight new research ideas and results to promote a better understanding of the critical issues relating to the testing behaviour, modelling and analyses of protective structures against blast and impact loading.
Author: L. Kruszka
Publisher: IOS Press
ISBN: 1614999643
Category : Political Science
Languages : en
Pages : 170
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Book Description
Recent decades have seen an increase in the number of terrorist attacks, necessitating the development of more efficient global security policies. One of the most important elements of this enhanced security is the protection of critical infrastructure. This book presents edited contributions from the NATO Advanced Training Course (ATC) on Critical Infrastructure Protection - Best Practices and Innovative Methods of Protection, held in Agadir, Morocco, from 6 to 12 May 2018. The main objective of the course was to bring together specialists working in the area of protecting critical infrastructure in NATO Member and Partner countries to share their knowledge and expertise. One lecture block was dedicated to important legal aspects, as these differ from country to country. The other main topic areas included the structural design and protection of critical infrastructure, new materials and material analysis, and material and construction testing at elevated impact velocities via experiment and numerical simulation. New designs for critical infrastructure elements were also demonstrated. The course provided an ideal forum for speakers and participants from government, academia, and military bodies to exchange information and best practice, while at the same time creating links to foster further collaboration and the exchange of ideas about the protection of critical infrastructure, and the book will be of interest to all those whose work involves protecting critical infrastructure from the threat of terrorist attack.
Author: L. Kruszka
Publisher: IOS Press
ISBN: 1643682733
Category : Political Science
Languages : en
Pages : 152
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Book Description
Damage to critical energy infrastructure as a result of terrorism, criminal activity or natural disaster can have a significant impact at both a national and international level. Reducing the vulnerability of critical infrastructure to protect populations is therefore a high priority for governments worldwide, and high-quality training courses and advanced technologies are imperative in this regard. This book presents edited contributions from the NATO Advanced Training Course (ATC) entitled ‘Critical Energy Infrastructure Protection: Innovative Structures and Materials for Blast and Ballistic Protection’, held as a virtual event from 22 - 25 March 2021. The principal aim of the course was to gather specialists from NATO member and partner countries interested in protecting their critical infrastructure against terrorist attacks, and to share research and practical experience in this field. The meeting provided a forum for participants and speakers to disseminate their recent work, and also served to promote the exchange of ideas and international cooperation among scientists and engineers. The focus was on the physical protection of critical infrastructure in the face of certain types of intentional threat or accident, such as explosions, impacts and blast waves, and the experts shared their experience on topics including the mitigation of risks, classification of vulnerabilities, improvement of resilience, advanced protective materials, dynamic testing of materials and structures, simulations, and numerical prediction methods. The book will be of interest to all those whose work involves protecting critical infrastructure from the threat of terrorist attacks.
Author: Ladislav Hofreiter
Publisher: Springer Nature
ISBN: 9402417559
Category : Business & Economics
Languages : en
Pages : 373
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Book Description
This proceedings volume includes articles presented during the Advanced Research Workshop on Soft Target Protection. The book presents important topics related to the protection of vulnerable objects and spaces, called Soft Targets. The chapters published in this book are thematically assigned to the blocks as follows: Theoretical aspect of soft target protection; Blast resistance of soft targets; Counter terrorism; Technical and technological solutions for soft target protection; Scheme and organizational measures; Blast protection and Forces for soft target protection. In this book, the reader will find a wealth of information about the theoretical background for designing protection of soft targets, as well as the specifics of protecting objects in armed conflict areas. New methods and procedures applicable to the soft target protection are described.
