Smart Technologies for Safety Engineering
1. Auflage April 2008
350 Seiten, Hardcover
Praktikerbuch
Kurzbeschreibung
Exploring new concepts of smart technologies and their applications,Smart Technologies for Safety Engineering presents original methods and software tools for modeling. The text includes the design, simulation, and control of adaptive structures and the application of the smart-tech concept to the following hot research topics and emerging engineering issues: health monitoring of structures and engineering systems; monitoring and prediction of environmental conditions; automatic structural adaptation to unpredictable, randomly changing dynamic conditions; and optimal design of adaptive structures and engineering systems.
Smart technologies comprise a dynamic new interdisciplinary research field that encompasses a wide spectrum of engineering applications including, but not limited to, intelligent structures and materials, actuators, sensors and structural observability, control systems and software tools for the design of adaptive structures. Smart technologies focus on the issues surrounding the safety and integrity of engineering systems.
Smart Technologies for Safety Engineering presents the achievements of ten years of research from the Smart-Tech Centre applied to some of the key issues of safety engineering. Results presented include:
* Original methods and software tools for modelling, design, simulation and control of adaptive structures and applicability of the adaptive concept to the design of structures for extreme loads;
* Application of the smart-tech concept to hot research topics and emerging engineering issues including health monitoring of structures and engineering systems, monitoring of loading conditions, automatic structural adaptation to unpredictable, randomly changing dynamic conditions and the optimal design of adaptive structures and engineering systems;
* Numerically efficient and original software packages that can be used for the design of adaptive, as well as passive (without control devices) structures.
* The Virtual Distortion Method, which has been developed especially for fast reanalysis of structures and systems and exact sensitivity analysis, allowing for effective modelling, design, health monitoring and control of smart engineering systems.
The original research and practical applications in Smart Technologies for Safety Engineering will appeal to a broad spectrum of engineers, researchers, professors and graduate students involved in the research, design and development of widely understood adaptronics and mechatronics, including smart structures and materials, adaptive impact absorption, health and load monitoring, vibration control, vibroacoustics and related issues.
About the Authors.
Organization of the Book.
1 Introduction to Smart Technologies (Jan Holnicki-Szulc, Jerzy Motylewski and Przemyslaw Kolakowski).
1.1 Smart Technologies - 30 Years of History.
1.2 Smart-Tech Hardware Issues.
1.3 Smart-Tech Software Issues.
References.
2 The Virtual Distortion Method - A Versatile Reanalysis Tool (Przemyslaw Kolakowski, Marcin Wiklo and Jan Holnicki-Szulc).
2.1 Introduction.
2.2 Overview of Reanalysis Methods.
2.3 Virtual Distortion Method - The Main Idea.
2.4 VDM in Structural Statics.
2.5 VDM in Structural Dynamics.
2.6 VDM-Based Sensitivity Analysis.
2.7 Versatility of VDM in System Modeling.
2.8 Recapitulation.
References.
3 VDM-Based Health Monitoring of Engineering Systems (Przemyslaw Kolakowski, Andrzej´ Swiercz, Anita Orlowska, Marek Kokot and Jan Holnicki-Szulc).
3.1 Introduction to Structural Health Monitoring.
3.2 Damage Identification in Skeletal Structures.
3.3 Modeling and Identification of Delamination in Double-Layer Beams.
3.4 Leakage Identification in Water Networks.
3.5 Damage Identification in Electrical Circuits.
References.
4 Dynamic Load Monitoring (Lukasz Jankowski, Krzysztof Sekula, Bartlomiej D. Blachowski, Marcin Wiklo, and Jan Holnicki-Szulc).
4.1 Real-Time Dynamic Load Identification.
4.2 Observer Technique for On-Line Load Monitoring.
4.3 Off-Line Identification of Dynamic Loads.
References.
5 Adaptive Impact Absorption (Piotr K. Pawlowski, Grzegorz Mikulowski, Cezary Graczykowski, Marian Ostrowski, Lukasz Jankowski and Jan Holnicki-Szulc).
5.1 Introduction.
5.2 Multifolding Materials and Structures.
5.3 Structural Fuses for Smooth Reception of Repetitive Impact Loads.
5.4 Absorption of Repetitive, Exploitative Impact Loads in Adaptive Landing Gears.
5.5 Adaptive Inflatable Structures with Controlled Release of Pressure.
5.6 Adaptive Crash Energy Absorber.
References.
6 VDM-Based Remodeling of Adaptive Structures Exposed to Impact Loads (Marcin Wiklo, Lukasz Jankowski, Malgorzata Mróz and Jan Holnicki-Szulc).
6.1 Material Redistribution in Elastic Structures.
6.2 Remodeling of Elastoplastic Structures.
6.3 Adaptive Structures with Active Elements.
6.4 Remodeling of Damped Elastic Structures.
References.
7 Adaptive Damping of Vibration by the Prestress Accumulation/Release Strategy (Arkadiusz Mróz, Anita Orlowska and Jan Holnicki-Szulc).
7.1 Introduction.
7.2 Mass-Spring System.
7.3 Delamination of a Layered Beam.
7.4 Experimental Verification.
7.5 Possible Applications.
References.
8 Modeling and Analysis of Smart Technologies in Vibroacoustics (Tomasz G. Zielínski).
8.1 Introduction.
8.2 Biot's Theory of Poroelasticity.
8.3 Porous and Poroelastic Material Data and Coefficients.
8.4 Weak Forms of Poroelasticity, Elasticity, Piezoelectricity and Acoustics.
8.5 Boundary Conditions for Poroelastic Medium.
8.6 Interface Coupling Conditions for Poroelastic and Other Media.
8.7 Galerkin Finite Element Model of a Coupled System of Piezoelectric, Elastic, Poroelastic and Acoustic Media.
8.8 Modeling of Poroelastic Layers with Mass Implants Improving Acoustic Absorption.
8.9 Designs of Active Elastoporoelastic Panels.
8.10 Modeling and Analysis of an Active Single-Plate Panel.
References.
Acknowledgements.
Index.
The first PhD thesis in the STC was defended by Przemystaw Kotakowski (1998) and devoted to the application of the virtual distortion method (VDM) to optimal structural remodeling, treated as a static problem. Then, one of the next these by Tomasz G. Zielinski (2003) contained a generalization of the VDM for structural dynamics and its application to damage identification via the solution of an inverse problem. Anita Ortowska (2007) in her thesis developed an application of the dynamic VDM to the identification of delamination in composite beams. Further development of these numerical tools, allowing for fast and effective structural remodeling and solving coupled dynamic problems (including redistribution of material, stiffness and physical nonlinearity), was done by Marcin Wikto (thesis just completed). Dr Lukasz Jankowski (PhD defended in BAM, Berlin) and Dr Barttomiej Btachowski (PhD defended in IPPT-PAN, Warsaw) joined the STC in 2005 and ar4e both involved in dynamic load identification.
The further development of VDM applications to the structural health monitoring (SHM) concepts and under development in collaboration with the current PhD students Andrzej Swiercz and Marek Kokot (Theses almost completed). Matgorzata Mroz (thesis in progress) is working on the application of the VDM to optimal remodeling of damping properties in dynamically excited structures. Another group of PhD students, Grzegorz Mikutowski and Piotr Pawtowski (theses almost completed), Cezary Graczykowski and Krzysztof Sekuta (theses in progress), Arkadiusz Mroz and Marian Ostrowski (theses in progress), have already obtained interesting research results in the field of adaptive impact absorption (AIA). Finally, Dr Jerzy Motylewski is a key person in the STC in vibroacoust6ic measurement techniques and hardware development.
The team of seventeen co-authors is presented below; their contributions to particular chapters are listed in the Organization of the Book.
