Lamb-Wave Based Structural Health Monitoring in Polymer Composites

Lamb-Wave Based Structural Health Monitoring in Polymer Composites
Author: Rolf Lammering
Publisher: Springer
Total Pages: 476
Release: 2017-08-30
Genre: Science
ISBN: 3319497154
GET BOOK

Download Lamb-Wave Based Structural Health Monitoring in Polymer Composites Book in PDF, Epub and Kindle

The book focuses especially on the application of SHM technology to thin walled structural systems made from carbon fiber reinforced plastics. Here, guided elastic waves (Lamb-waves) show an excellent sensitivity to structural damages so that they are in the center of this book. It is divided into 4 sections dealing with analytical, numerical and experimental fundamentals, and subsequently with Lamb-wave propagation in fiber reinforced composites, SHM-systems and signal processing. The book is designed for engineering students as well as for researchers in the field of structural health monitoring and for users of this technology.

Lamb Waves for Structural Health Monitoring in Viscoelastic Composite Materials

Lamb Waves for Structural Health Monitoring in Viscoelastic Composite Materials
Author: Mircea Calomfirescu
Publisher: Logos Verlag Berlin GmbH
Total Pages: 119
Release: 2008
Genre:
ISBN: 3832519467
GET BOOK

Download Lamb Waves for Structural Health Monitoring in Viscoelastic Composite Materials Book in PDF, Epub and Kindle

Strucural Health Monitoring (SHM) is a novel philosophy for an autonomous, built-in nondestructive evalution of structural "health" on demand to reduce life-cycle costs, increase safety and reduce structural weight. This dissertation investigates ultrasonic guided waves, particulary Lamb waves, and their propagation properties as a method to perform Health Monitoring of viscoelastic composite structures.

Structural Health Monitoring in Composite Materials Using Lamb Wave Methods

Structural Health Monitoring in Composite Materials Using Lamb Wave Methods
Author: Seth Stovack Kessler
Publisher:
Total Pages: 14
Release: 2001
Genre:
ISBN:
GET BOOK

Download Structural Health Monitoring in Composite Materials Using Lamb Wave Methods Book in PDF, Epub and Kindle

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 in-situ damage detection of composite materials. Experimental results are presented for the application of Lamb wave techniques to quasi-isotropic graphite/epoxy thin coupons and sandwich beams containing representative damage modes, including delamination, transverse ply cracks and through-holes. Optimization experiments provided a procedure capable of easily and accurately determining the presence of damage by monitoring the transmitted waves with piezoceramic sensors (PZT). Lamb wave techniques have been proven to provide more information about damage type, sevenity and location than previously tested methods, and may prove suitable for structural health monitoring applications since they travel long distances and can be applied with conformable piezoelectric actuators and sensors that require little power.

Structural Health Monitoring For Advanced Composite Structures

Structural Health Monitoring For Advanced Composite Structures
Author: M H Ferri Aliabadi
Publisher: World Scientific
Total Pages: 286
Release: 2017-12-18
Genre: Technology & Engineering
ISBN: 1786343940
GET BOOK

Download Structural Health Monitoring For Advanced Composite Structures Book in PDF, Epub and Kindle

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.

Structural Health Monitoring Technologies and Next-Generation Smart Composite Structures

Structural Health Monitoring Technologies and Next-Generation Smart Composite Structures
Author: Jayantha Ananda Epaarachchi
Publisher: CRC Press
Total Pages: 545
Release: 2016-09-15
Genre: Technology & Engineering
ISBN: 1482226928
GET BOOK

Download Structural Health Monitoring Technologies and Next-Generation Smart Composite Structures Book in PDF, Epub and Kindle

Due to the increased use of composite materials in aerospace, energy, automobile, and civil infrastructure applications, concern over composite material failures has grown, creating a need for smart composite structures that are able to self-diagnose and self-heal. Structural Health Monitoring Technologies and Next-Generation Smart Composite Structures provides valuable insight into cutting-edge advances in SHM, smart materials, and smart structures. Comprised of chapters authored by leading researchers in their respective fields, this edited book showcases exciting developments in general embedded sensor technologies, general sensor technologies, sensor response interrogation and data communication, damage matrix formulation, damage mechanics and analysis, smart materials and structures, and SHM in aerospace applications. Each chapter makes a significant contribution to the prevention of structural failures by describing methods that increase safety and reduce maintenance costs in a variety of SHM applications.

Structural Health Monitoring of Aerospace Composites

Structural Health Monitoring of Aerospace Composites
Author: Victor Giurgiutiu
Publisher: Academic Press
Total Pages: 471
Release: 2015-09-08
Genre: Technology & Engineering
ISBN: 012410441X
GET BOOK

Download Structural Health Monitoring of Aerospace Composites Book in PDF, Epub and Kindle

Structural Health Monitoring of Aerospace Composite Structures offers a comprehensive review of established and promising technologies under development in the emerging area of structural health monitoring (SHM) of aerospace composite structures. Beginning with a description of the different types of composite damage, which differ fundamentally from the damage states encountered in metallic airframes, the book moves on to describe the SHM methods and sensors currently under consideration before considering application examples related to specific composites, SHM sensors, and detection methods. Expert author Victor Giurgiutiu closes with a valuable discussion of the advantages and limitations of various sensors and methods, helping you to make informed choices in your structure research and development. The first comprehensive review of one of the most ardent research areas in aerospace structures, providing breadth and detail to bring engineers and researchers up to speed on this rapidly developing field Covers the main classes of SHM sensors, including fiber optic sensors, piezoelectric wafer active sensors, electrical properties sensors and conventional resistance strain gauges, and considers their applications and limitation Includes details of active approaches, including acousto-ultrasonics, vibration, frequency transfer function, guided-wave tomography, phased arrays, and electrochemical impedance spectroscopy (ECIS), among other emerging methods

Identification of Damage Using Lamb Waves

Identification of Damage Using Lamb Waves
Author: Zhongqing Su
Publisher: Springer Science & Business Media
Total Pages: 355
Release: 2009-09-01
Genre: Technology & Engineering
ISBN: 1848827849
GET BOOK

Download Identification of Damage Using Lamb Waves Book in PDF, Epub and Kindle

Lamb waves are guided waves that propagate in thin plate or shell structures. There has been a clear increase of interest in using Lamb waves for identifying structural damage, entailing intensive research and development in this field over the past two decades. Now on the verge of maturity for diverse engineering applications, this emerging technique serves as an encouraging candidate for facilitating continuous and automated surveillance of the integrity of engineering structures in a cost-effective manner. In comparison with conventional nondestructive evaluation techniques such as ultrasonic scanning and radiography which have been well developed over half a century, damage identification using Lamb waves is in a stage of burgeoning development, presenting a number of technical challenges in application that need to be addressed and circumvented. It is these two aspects that have encouraged us to write this book, with the intention of consolidating the knowledge and know-how in the field of Lamb-wave-based damage identification, and of promoting widespread attention to mature application of this technique in the practical engineering sphere. This book provides a comprehensive description of key facets of damage identification technique using Lamb waves, based on the authors’ knowledge, comprehension and experience, ranging from fundamental theory through case studies to engineering applications.

Innovation in Smart Materials and Structural Health Monitoring for Composite Applications

Innovation in Smart Materials and Structural Health Monitoring for Composite Applications
Author: F. Mustapha
Publisher: Materials Research Forum LLC
Total Pages: 184
Release: 2017-05-05
Genre: Technology & Engineering
ISBN: 194529129X
GET BOOK

Download Innovation in Smart Materials and Structural Health Monitoring for Composite Applications Book in PDF, Epub and Kindle

Structural health monitoring (SHM) is an automated approach to determine any changes in the integrity of mechanical systems. The SHM system gives information in real time and online. The book explains and discusses the advantages of Root Mean Square Deviation (RMSD) techniques. Special focus is placed on applications of structural health monitoring of bio-composite turbine blades for vertical axis wind turbines.

New Trends in Structural Health Monitoring

New Trends in Structural Health Monitoring
Author: Wieslaw Ostachowicz
Publisher: Springer Science & Business Media
Total Pages: 433
Release: 2013-01-18
Genre: Science
ISBN: 3709113903
GET BOOK

Download New Trends in Structural Health Monitoring Book in PDF, Epub and Kindle

A motivation for structural health monitoring. Structural health monitoring of aircraft structures. Vibration-based damage diagnosis and monitoring of external loads.Statistical time series methods for vibration based structural health monitoring. Fiber optic sensors. Damage localisation using elastic waves propagation methods experimental techniques. Application for wind turbine blades. Experts actively working in structural health monitoring and control techniques present the current research, areas of application and tendencies for the future of this technology, including various design issues involved. Examples using some of the latest hardware and software tools, experimental data from small scale laboratory demonstrators and measurements made on real structures illustrate the book. It will be a reference for professionals and students in the areas of engineering, applied natural sciences and engineering management.

Guided Waves in Structures for SHM

Guided Waves in Structures for SHM
Author: Wieslaw Ostachowicz
Publisher: John Wiley & Sons
Total Pages: 267
Release: 2011-12-30
Genre: Science
ISBN: 1119966744
GET BOOK

Download Guided Waves in Structures for SHM Book in PDF, Epub and Kindle

Understanding and analysing the complex phenomena related to elastic wave propagation has been the subject of intense research for many years and has enabled application in numerous fields of technology, including structural health monitoring (SHM). In the course of the rapid advancement of diagnostic methods utilising elastic wave propagation, it has become clear that existing methods of elastic wave modeling and analysis are not always very useful; developing numerical methods aimed at modeling and analysing these phenomena has become a necessity. Furthermore, any methods developed need to be verified experimentally, which has become achievable with the advancement of measurement methods utilising laser vibrometry. Guided Waves in Structures for SHM reports on the simulation, analysis and experimental investigation related propagation of elastic waves in isotropic or laminated structures. The full spectrum of theoretical and practical issues associated with propagation of elastic waves is presented and discussed in this one study. Key features: Covers both numerical and experimental aspects of modeling, analysis and measurement of elastic wave propagation in structural elements formed from isotropic or composite materials Comprehensively discusses the application of the Spectral Finite Element Method for modelling and analysing elastic wave propagation in diverse structural elements Presents results of experimental measurements employing advanced laser technologies, validating the quality and correctness of the developed numerical models Accompanying website (www.wiley.com/go/ostachowicz) contains demonstration versions of commercial software developed by the authors for modelling and analyzing elastic wave propagation using the Spectral Finite Element Method Guided Waves in Structures for SHM provides a state of the art resource for researchers and graduate students in structural health monitoring, signal processing and structural dynamics. This book should also provide a useful reference for practising engineers within structural health monitoring and non-destructive testing.