WorldCat Identities

Aggelis, Dimitrios G.

Overview
Works: 10 works in 14 publications in 1 language and 224 library holdings
Roles: Author, Editor, Contributor, htt
Classifications: TA418.84, 620.11248
Publication Timeline
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Most widely held works by Dimitrios G Aggelis
Acoustic and Elastic Waves: Recent Trends in Science and Engineering by Dimitrios G Aggelis( )

4 editions published in 2017 in English and Undetermined and held by 164 WorldCat member libraries worldwide

The present Special Issue intends to explore new directions in the field of acoustics and ultrasonics. The interest includes, but is not limited to, the use of acoustic technology for condition monitoring of materials and structures.Topics of interest (among others):{u2022} Acoustic emission in materials and structures (without material limitation){u2022} Innovative cases of ultrasonic inspection{u2022} Wave dispersion and waveguides{u2022} Monitoring of innovative materials{u2022} Seismic waves{u2022} Vibrations, damping and noise control{u2022} Combination of mechanical wave techniques with other types for structural health monitoring purposes.Experimental and numerical studies are welcome
Acoustic and elastic waves : recent trends in science and engineering( )

1 edition published in 2016 in English and held by 30 WorldCat member libraries worldwide

Acoustic Emission Testing : Basics for Research - Applications in Engineering( )

1 edition published in 2022 in English and held by 17 WorldCat member libraries worldwide

Emerging Technologies in Non-Destructive Testing V( )

1 edition published in 2012 in English and held by 4 WorldCat member libraries worldwide

Annotation
Acoustic emission testing : [basics for research, applications in civil engineering] by Christian U Grosse( Book )

2 editions published between 2021 and 2022 in English and held by 2 WorldCat member libraries worldwide

This title covers all levels of acoustic emission techniques from the description of AE basics for AE beginners (level of a student) to sophisticated AE algorithms and applications
Wave propagation through engineering materials; assessment and monitoring of structures through non-destructive techniques by Dimitrios G Aggelis( )

1 edition published in 2013 in English and held by 2 WorldCat member libraries worldwide

Towards the Establishment of a Continuous Nondestructive Monitoring Technique for Fresh Concrete by Sokratis N Iliopoulos( )

1 edition published in 2016 in English and held by 2 WorldCat member libraries worldwide

Special section on monitoring of infrastructure and materials by NDT( Book )

1 edition published in 2013 in English and held by 1 WorldCat member library worldwide

Wave dispersion in fresh and hardened concrete through the prism of gradient elasticity( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

Abstract: The determination of the early age concrete properties and the monitoring of their evolution is the key point for an optimized construction with assured high quality. To this direction, the ultrasonic nondestructive testing technique is highly promising since it gives feedback on the mechanical properties and damage condition, allowing for the continuous interrogation of the material. It has experimentally been observed that concrete at both its fresh and hardened state exhibits a significant dispersive behavior concerning longitudinal ultrasonic pulses. Analytically, only few attempts have been made to explain this low-frequency change of phase velocity through the development of enhanced elastic theories. The most commonly used higher order theory is the simple strain gradient elastic theory which takes into account the microstructural effects in heterogeneous media like concrete. These microstructural effects are described by two internal length scale parameters g and h which correspond to the micro-stiffness and micro-inertia, respectively. In the present paper, it is shown that this simplest possible version of the general gradient elastic theory proposed by Mindlin can effectively describe the velocity dispersion of fresh and hardened concrete specimens with various water and sand contents. Moreover, it is here found that micro-inertia is dominant in fresh concrete while, on the other hand, micro-stiffness dominates the hardened concrete, which suggests that gradient elasticity can be successfully applied for the monitoring of the setting process of the above mentioned material. To overcome the fact that the considered strain gradient elastic model cannot attribute geometrical and mechanical properties of the microstructure to the microstiffness and microinertia terms, a non-local lattice model is adopted. Using that model, which reproduces the same differential wave equation as the one dimensional strain gradient elastic model, the derived Mindlin's microstructural coefficients are directly linked to the characteristic size of the microstructure. Finally, using the lattice model, it is made clear that prior knowledge of the dominant microstructural coefficient values accompanied by the mechanical and physical properties of the concrete matrix and aggregates, explicitly provides, among others, the interparticle distance l, the mean diameter of the inclusion as well as a measure of the intensity of nonlocal effects
Acoustic Emission Testing Basics for Research {u2013} Applications in Engineering( Book )

1 edition published in 2022 in English and held by 1 WorldCat member library worldwide

This book provides an introduction to Acoustic Emission Testing and its applications to different materials like concrete, steel, ceramics, geotechnical materials, polymers, biological structures and wood. Acoustic Emission Techniques (AET) techniques have been studied in engineering for a long time. The techniques are applied more and more to practical investigations and are more and more standardized in codes. This is because the degradation of structures due to ageing urgently demand for maintenance and rehabilitation of structures in service. It results in the need for the development of advanced and efficient inspection techniques. In mechanical engineering and concerning the monitoring of machines and mechanical components, AE is a widely accepted observing deterioration in the frame of structural health monitoring. The advantages of AE like sensitivity, damage localization potential, non-intrusive nature as well as developments in signal analysis and data transmission allow applications that could not be considered decades ago. As such, AE techniques draw great attention to diagnostic applications and in material testing. This book covers all levels from the description of AE basics for AE beginners (level of a student) to sophisticated AE algorithms and applications to real large-scale structures as well as the observation of the cracking process in laboratory specimen to study fracture processes. This book has proved its worth over the past twelve years. Now in its second edition, it will be a resource that sets the standard and equips readers for the future. All chapters from the 1st edition have been updated and rewritten and eight extra chapters (e.g also regarding AE tomography, AE in plate-like structures and AE for investigations of hardening of fresh concrete) have been added
 
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Audience Level
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Acoustic and Elastic Waves: Recent Trends in Science and Engineering
Covers
Emerging Technologies in Non-Destructive Testing VAcoustic emission testing : [basics for research, applications in civil engineering]
Alternative Names
Aggelis, D.G.

Languages
English (13)