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Structural Health Monitoring: with Piezoelectric Wafer Active Sensors

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TLDR
Structural Health Monitoring with Piezoelectric Wafer active sensors (PWAS) as mentioned in this paper is the first comprehensive textbook to provide background information, theoretical modeling, and experimental examples on the principal technologies involved in SHM.
Abstract
Structural Health Monitoring (SHM) is the interdisciplinary engineering field devoted to the monitoring and assessment of structural health and durability. SHM technology integrates remote sensing, smart materials, and computer based knowledge systems to allow engineers see how built up structures are performing over time. It is particularly useful for remotely monitoring large infrastructure systems, such as bridges and dams, and high profile mechanical systems such as aircraft, spacecraft, ships, offshore structures and pipelines where performance is critical but onsite monitoring is difficult or even impossible."Structural Health Monitoring with Piezoelectric Wafer Active Sensors" is the first comprehensive textbook to provide background information, theoretical modeling, and experimental examples on the principal technologies involved in SHM. This textbook can be used for both teaching and research. It not only provides students, engineers and other interested technical specialists with the foundational knowledge and necessary tools for understanding modern sensing materials and systems, but also shows them how to employ this knowledge in actual engineering situations.It addresses the problem of aging structures and explains how SHM can alleviate their situation and prolong their useful life. It provides a step by step presentation on how Piezoelectric Wafer Active Sensors (PWAS) are used to detect and quantify the presence of damage in structures. It presents the underlying theories (piezoelectricity, vibration, wave propagation, etc.) and experimental techniques (E/M impedance, PWAS phased arrays, etc.) to be employed in successful SHM applications. It provides an understanding of how to interpret sensor signal patterns such as various wave forms, including analytical techniques like Fast Fourier Transform, Short-time Fourier Transform and Wavelet Transform. It offers comprehensive teaching tools (worked examples, experiments, homework problems, and exercises) and an extensive online instructor manual containing lecture plans and homework solutions.

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Journal ArticleDOI

Guided wave based structural health monitoring: A review

TL;DR: In this paper, the authors provide a state-of-the-art review of guided wave based structural health monitoring (SHM) and highlight the future directions and open areas of research in guided wave-based SHM.
Journal ArticleDOI

Structural health monitoring techniques for aircraft composite structures

TL;DR: A review of currently used inspection methods is presented and some examples are described where Lamb wave based scanning techniques have been used to identify internal damage in multi-layered composite structures in this article.
Journal ArticleDOI

Efficient temperature compensation strategies for guided wave structural health monitoring

TL;DR: In this paper, the authors quantitatively describe two different methods to compensate for the temperature effect, namely optimal baseline selection (OBS) and baseline signal stretch (BSS), and investigate the effect of temperature separation between baseline time traces in OBS and the parameters used in the BSS method.
Journal ArticleDOI

Damage identification in aircraft composite structures: A case study using various non-destructive testing techniques

TL;DR: In this paper, the authors experimentally tested three composite structures made of glass fiber-reinforced plastic, hybrid composite with a core made of the same material and face sheets made of aluminum alloy and a carbon fiber reinforced plastic structure extracted from the vertical stabilizer of a military aircraft.
Journal ArticleDOI

Frequency-wavenumber domain analysis of guided wavefields.

TL;DR: Full wavefield measurements obtained with either an air-coupled transducer mounted on a scanning stage or a scanning laser vibrometer can be combined with effective signal and imaging processing algorithms to support characterization of guided waves as well as detection, localization and quantification of structural damage.