Holnicki-Szulc Smart Technologies for Safety Engineering

1. Auflage 2008
ISBN: 978-0-470-75860-1
Verlag: John Wiley & Sons
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 350 Seiten, E-Book

Smart technologies comprise a dynamic new interdisciplinaryresearch field that encompasses a wide spectrum of engineeringapplications including, but not limited to, intelligent structuresand materials, actuators, sensors and structural observability,control systems and software tools for the design of adaptivestructures. Smart technologies focus on the issues surrounding thesafety and integrity of engineering systems.
Smart Technologies for Safety Engineering presents theachievements of ten years of research from the Smart-Tech Centreapplied to some of the key issues of safety engineering. Resultspresented include:
* Original methods and software tools for modelling, design,simulation and control of adaptive structures and applicability ofthe adaptive concept to the design of structures for extremeloads;
* Application of the smart-tech concept to hot research topicsand emerging engineering issues including health monitoring ofstructures and engineering systems, monitoring of loadingconditions, automatic structural adaptation to unpredictable,randomly changing dynamic conditions and the optimal design ofadaptive structures and engineering systems;
* Numerically efficient and original software packages that canbe used for the design of adaptive, as well as passive (withoutcontrol devices) structures.
* The Virtual Distortion Method, which has been developedespecially for fast reanalysis of structures and systems and exactsensitivity analysis, allowing for effective modelling, design,health monitoring and control of smart engineering systems.
The original research and practical applications in SmartTechnologies for Safety Engineering will appeal to a broad spectrumof engineers, researchers, professors and graduate studentsinvolved in the research, design and development of widelyunderstood adaptronics and mechatronics, including smartstructures and materials, adaptive impact absorption, health andload monitoring, vibration control, vibroacoustics and relatedissues.

Autoren/Hrsg.

Holnicki-Szulc, Jan

Inhaltsverzeichnis

Preface
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 Mr´oz 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 Pre-stress Accumulation Release Strategy
Arkadiusz Mr´oz, 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. Zielinski
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
Acknowledgments
Index

Über Autor(innen)

This book presents the research results obtained over the lastdecade by the Smart Technology Centre (STC), http://smart.ippt.gov.pl/,operating at the Institute of Fundamental Technological research(IPPT) of the Polish Academy of Sciences (PAN), Warsaw,Poland. It collects achievements of several PhD theses, alreadycompleted or still being elaborated. the STC is a division ofIPPT-PAN, headed by Prof. Jan Holnicki-Szulc. He graduated from theWarsaw University of Technology in civil Engineering (1969) andsimultaneously from the University of Warsaw in Mathematics (1972).Hs PhD thesis (1973) and the habilitation thesis (1983) weredefended in IPPT. He spent about 5 years (in the 1980s and 1990s)visiting various labs became eligible for financial support throughthe European research initiatives, i.e. the 4th, 5th and 6thFramework Programmes.
The first PhD thesis in the STC was defended by PrzemystawKotakowski (1998) and devoted to the application of the virtualdistortion method (VDM) to optimal structural remodeling, treatedas a static problem. Then, one of the next these by Tomasz G.Zielinski (2003) contained a generalization of the VDM forstructural dynamics and its application to damage identificationvia the solution of an inverse problem. Anita Ortowska (2007) inher thesis developed an application of the dynamic VDM to theidentification of delamination in composite beams. Furtherdevelopment of these numerical tools, allowing for fast andeffective structural remodeling and solving coupled dynamicproblems (including redistribution of material, stiffness andphysical nonlinearity), was done by Marcin Wikto (thesis justcompleted). Dr Lukasz Jankowski (PhD defended in BAM, Berlin) andDr Barttomiej Btachowski (PhD defended in IPPT-PAN, Warsaw) joinedthe STC in 2005 and ar4e both involved in dynamic loadidentification.
The further development of VDM applications to the structuralhealth monitoring (SHM) concepts and under development incollaboration with the current PhD students Andrzej Swiercz andMarek Kokot (Theses almost completed). Matgorzata Mroz (thesis inprogress) is working on the application of the VDM to optimalremodeling of damping properties in dynamically excited structures.Another group of PhD students, Grzegorz Mikutowski and PiotrPawtowski (theses almost completed), Cezary Graczykowski andKrzysztof Sekuta (theses in progress), Arkadiusz Mroz and MarianOstrowski (theses in progress), have already obtained interestingresearch results in the field of adaptive impact absorption (AIA).Finally, Dr Jerzy Motylewski is a key person in the STC invibroacoust6ic measurement techniques and hardware development.
The team of seventeen co-authors is presented below; theircontributions to particular chapters are listed in the Organizationof the Book.