Acoustic Emission Signature Analysis of Failure Mechanisms in Fiber Reinforced Plastic Structures

Acoustic Emission Signature Analysis of Failure Mechanisms in Fiber Reinforced Plastic Structures PDF Author: Nat Ativitavas
Publisher:
ISBN:
Category : Acoustic emission testing
Languages : en
Pages :

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Acoustic Emission Signature Analysis of Failure Mechanisms in Fiber Reinforced Plastic Structures

Acoustic Emission Signature Analysis of Failure Mechanisms in Fiber Reinforced Plastic Structures PDF Author: Nat Ativitavas
Publisher:
ISBN:
Category : Acoustic emission testing
Languages : en
Pages :

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International Symposium on Acoustic Emission from Reinforced Composites

International Symposium on Acoustic Emission from Reinforced Composites PDF Author:
Publisher:
ISBN:
Category : Acoustic emission
Languages : en
Pages : 242

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Symposium on Acoustic Emission from Reinforced Composites

Symposium on Acoustic Emission from Reinforced Composites PDF Author:
Publisher:
ISBN:
Category : Acoustic emission
Languages : en
Pages : 376

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Eco-efficient Repair and Rehabilitation of Concrete Infrastructures

Eco-efficient Repair and Rehabilitation of Concrete Infrastructures PDF Author: Fernando Pacheco-Torgal
Publisher: Elsevier
ISBN: 0443134715
Category : Technology & Engineering
Languages : en
Pages : 457

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Book Description
Eco-efficient Repair and Rehabilitation of Concrete Infrastructures, Second Edition provides an updated state-of-the-art review on the latest advances in this important research field. The first section is brought fully up-to-date and focuses on deterioration assessment methods. Section two contains brand new chapters on innovative concrete repair and rehabilitation materials including: fly ash-based alkali-activated repair materials for concrete exposed to aggressive environments; repairing concrete structures with alkali-activated metakaolin mortars; concrete with micro encapsulated self-healing materials; concrete repaired with bacteria; concrete structures repaired with engineered cementitious composites; concrete repaired by electrodeposition; the assessment of concrete after repair operations and durability of concrete repair. The final section has also been amended to include six new chapters on design, Life-cycle cost analysis and life-cycle assessment. These chapters include maintenance strategies for concrete structures; a comparison of different repair methods; life cycle assessment of the effects of climate change on bridge deterioration; life-cycle-cost benefits of cathodic protection of concrete structures; life-cycle cost analyses for concrete bridges exposed to chlorides and life-cycle analysis of repair of concrete pavements. The book will be an essential reference resource for materials scientists, civil and structural engineers, architects, structural designers and contractors working in the construction industry. - Presents the latest research findings on eco-efficient repair and rehabilitation of concrete infrastructures - Provides comprehensive coverage from damage detection and assessment, to repair strategies, and structural health monitoring - Diverse author base offering insights on construction practice and employed technologies worldwide - Includes a section on innovative repair and rehabilitation materials, as well as case studies on life cycle cost analysis and LCA

Structural Health Monitoring Damage Detection Systems for Aerospace

Structural Health Monitoring Damage Detection Systems for Aerospace PDF Author: Markus G. R. Sause
Publisher: Springer Nature
ISBN: 3030721922
Category : Aerospace engineering
Languages : en
Pages : 292

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Book Description
This open access book presents established methods of structural health monitoring (SHM) and discusses their technological merit in the current aerospace environment. While the aerospace industry aims for weight reduction to improve fuel efficiency, reduce environmental impact, and to decrease maintenance time and operating costs, aircraft structures are often designed and built heavier than required in order to accommodate unpredictable failure. A way to overcome this approach is the use of SHM systems to detect the presence of defects. This book covers all major contemporary aerospace-relevant SHM methods, from the basics of each method to the various defect types that SHM is required to detect to discussion of signal processing developments alongside considerations of aerospace safety requirements. It will be of interest to professionals in industry and academic researchers alike, as well as engineering students. This article/publication is based upon work from COST Action CA18203 (ODIN - http://odin-cost.com/), supported by COST (European Cooperation in Science and Technology). COST (European Cooperation in Science and Technology) is a funding agency for research and innovation networks. Our Actions help connect research initiatives across Europe and enable scientists to grow their ideas by sharing them with their peers. This boosts their research, career and innovation.

Dissertation Abstracts International

Dissertation Abstracts International PDF Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 858

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Acoustic Emission from Composite Materials

Acoustic Emission from Composite Materials PDF Author: RG. Liptai
Publisher:
ISBN:
Category : Acoustic detection
Languages : en
Pages : 14

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Book Description
A review of the application of acoustic emission analysis to the evaluation of material properties and defect structure is presented, including a brief discussion of experimental techniques. Sources of acoustic emission in composite materials under strain are discussed. Particular attention is directed toward fiber reinforced composites, and experimental results on filament wound NOL rings and vessels (glass/epoxy) are reported. It is concluded that acoustic emission data are helpful in establishing the mechanisms governing operative fracture modes and assessing structural integrity.

Developments in fiber-reinforced polymer (FRP) composites for civil engineering

Developments in fiber-reinforced polymer (FRP) composites for civil engineering PDF Author: O. Gunes
Publisher: Elsevier Inc. Chapters
ISBN: 0128087684
Category : Technology & Engineering
Languages : en
Pages : 39

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Book Description
Fiber-reinforced polymer (FRP) composite materials have been increasingly used in civil engineering applications in the past two decades. Their wide ranging use, however, is still not realized due to a few fundamental issues including high material costs, relatively short history of applications and the gaps in the development of established standards. Design safety requires that all possible modes and mechanisms of failure are identified, characterized, and accounted for in the design procedures. This chapter provides a review of the failure types encountered in structural engineering applications of FRP and the preventive methods and strategies that have been developed to eliminate or delay such failures. As part of preventive measures, various non-destructive testing (NDT) and structural health monitoring (SHM) methods used for monitoring FRP applications are discussed with illustrative examples.

A Global Method for the Identification of Failure Modes in Fiberglass Using Acoustic Emission

A Global Method for the Identification of Failure Modes in Fiberglass Using Acoustic Emission PDF Author: V. Arumugam
Publisher:
ISBN:
Category : Acoustic emission
Languages : en
Pages : 13

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Book Description
The various failure mechanisms in bidirectional glass/epoxy laminates loaded in tension are identified using acoustic emission (AE) analysis. AE data recorded during the tensile testing of a single layer specimen are used to identify matrix cracking and fiber failure, while delamination signals are characterized using a two-layer specimen with a pre-induced defect. Parametric studies using AE count rate and cumulative counts allowed damage discrimination at different levels of loading and Fuzzy C-means clustering associated with principal component analysis were used to discriminate between failure mechanisms. The two above methods led to AE waveform selection: On selected waveforms, Fast Fourier Transform (FFT) enabled calculating the frequency content of each damage mechanism. Continuous wavelet transform allowed identifying frequency range and time history for failure modes, whilst noise content associated with the different failure modes was calculated and removed by discrete wavelet transform. Short Time FFT finally highlighted the possible failure mechanism associated with each signal.

Acoustic Emission Testing

Acoustic Emission Testing PDF Author: Christian U. Grosse
Publisher: Springer Nature
ISBN: 3030679365
Category : Technology & Engineering
Languages : en
Pages : 752

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Book Description
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.