Numerical and experimental study of a SHM system for a drop-ply delaminated configuration

Alaimo, Andrea

doi:10.1016/j.compstruct.2017.10.016

Cited by 4 publications

(2 citation statements)

References 37 publications

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“…Indeed, finite element simulation can be considered as very powerful tool in SHM systems. Some related works using FEA and SHM damage detection problems can be seen in Alaimo [2018], Chronopoulos [2018], Manoach et al [2017] and Kefal et al [2017]…”

Section: Mode Shape and Mode Curvature-based Methodsmentioning

confidence: 99%

On the use of Modal Test Data in Inverse Problems: Fundamentals and Applications

Gomes¹,

Carneiro²,

S.³

et al. 2022

Fundamental Concepts and Models for the Direct Problem

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In the past few decades, modal testing has become a major technology for determining, improving and optimizing dynamic characteristics of engineering structures in different fields, with emphasys (but not limited to) mechanical, civil, and aeronautical/aerospace engineering. One of the great advantages of using modal tests is related to their experimental practicality. This practical advantage leads to its strong use in inverse methods, or commonly known as inverse modal-based problems. An inverse problem based on modal parameters can be formulated basically using i) natural frequency, ii) damping factor or loss factor and iii) mode shapes. Other metrics can also be used from the composition of these 3 main responses, such as modal strain energy, inverse FRF and many others. Inverse modal-based identification through optimization algorithms are particularly emphasized. The methods discussed here are mainly elaborated by the evaluation of modal data due to the great potential of application. This chapter discusses the use of computational and intelligent techniques for parameter identification using modal responses. The content in this paper aims to help engineers and researchers find a starting point in developing a better solution to their specific structural problems, either by inverse methods, pattern recognition, or intelligent signal processing.

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Section: Mode Shape and Mode Curvature-based Methodsmentioning

confidence: 99%

On the use of Modal Test Data in Inverse Problems: Fundamentals and Applications

Gomes¹,

Carneiro²,

S.³

et al. 2022

Fundamental Concepts and Models for the Direct Problem

View full text Add to dashboard Cite

show abstract

“…A vibration technology of combining advanced sensors with intelligent algorithms to continually interrogate structural health condition and provide real-time and instant damage detection can be achieved in structural health monitoring (SHM) [10]. The vibration technology can be analyzed using different approaches and parameters, i.e., natural frequency analysis, scale wavenumber, Fourier Spectral Method, mode and shape method [11][12][13][14][15][16][17][18]. This technique has potential benefits of improving safety, reliability, reducing lifecycle costs and assists in the design of composites structures.…”

Section: Related Literaturementioning

confidence: 99%

The Continuous Monitoring of the Health of Composite Structure

Masango

Philander

Msomi

2018

Journal of Engineering

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Currently nondestructive testing techniques for composite aircraft structures are disadvantaged when compared to instant structural health monitoring (SHM) systems that monitor the structure while being in-service and give real-time data. This paper reports on the use of Polyvinylidene Fluoride (PVDF) sensors in sensing (or monitoring) and locating the defect of a flexible composite structure. The samples used for the tests were manufactured through the use of vacuum infusion process. The threepoint bending test was performed to determine the material properties. The vertical sample deflection was measured through the use of vertical height Vernier. It should be noted that the samples were analyzed as cantilever beam due to limited availability of test equipment. The sample health was monitored through the use of PVDF sensor. The sensor data was logged and recorded through the use of Fluke-View scopemeter. The 50 g mass pieces were used as a mode of subjecting the structure to the vertical load. The experiment was performed on samples with defects (drilled 3 mm hole) sample and no-defected sample. The deflection and output voltage from the PVDF sensor of all the samples were comparatively studied.

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The use of intelligent computational tools for damage detection and identification with an emphasis on composites – A review

Gomes

Mendéz

Alexandrino

et al. 2018

Composite Structures

121

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Numerical and experimental study of a SHM system for a drop-ply delaminated configuration

Cited by 4 publications

References 37 publications

On the use of Modal Test Data in Inverse Problems: Fundamentals and Applications

On the use of Modal Test Data in Inverse Problems: Fundamentals and Applications

The Continuous Monitoring of the Health of Composite Structure

The use of intelligent computational tools for damage detection and identification with an emphasis on composites – A review

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