Application of Acousto-ultrasonic Technique in Evaluation of Bond Strength Between Composites and Concrete Substrates

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ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.:/5 (554 download)

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Book Synopsis Application of Acousto-ultrasonic Technique in Evaluation of Bond Strength Between Composites and Concrete Substrates by : Stanley C. Stoll

Download or read book Application of Acousto-ultrasonic Technique in Evaluation of Bond Strength Between Composites and Concrete Substrates written by Stanley C. Stoll and published by . This book was released on 2009 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of fiber reinforced polymer materials (composite FRP materials) to strengthen existing concrete structures continues to expand as our current infrastructure ages. However, one of the concerns when using FRP systems in this manner is the difficulty in determining the quality and strength of the bond between the concrete and FRP overlays. There appears to be a need for a reliable non-destructive testing (NDT) method that can directly determine the strength of this bond to ensure the structural performance of FRP-strengthened concrete systems. The goal of this research was to evaluate whether a non-destructive acoustoultrasonic parameters (AUP) evaluation method could be used to determine the shear strength of the bond between FRP systems and concrete substrates. Eighteen concrete beams were externally reinforced flexurally with carbon fiber reinforced polymers (CFRP) and glass fiber reinforced polymers (GFRP) and then non-destructively tested using the AUP procedures. The test beam specimens were then placed in a simply supported configuration and loaded to failure. Interfacial shear strengths obtained from the destructive testing were compared against AUP analysis results to determine if a correlation could be established. Both longitudinal and shear transducers were utilized to collect propagating stress waves; however, only the longitudinal transducer provided consistent correlations to interfacial shear strength values. The investigation concluded that the (AUP) analysis procedure can be used to determine the interfacial shear bond strength of both glass and carbon fiber reinforced concrete beam specimens with relatively good correlation to actual strength data.

Nondestructive Evaluation of Adhesive Bonds Using 20 MHz and 25 kHz Ultrasonic Frequencies on Metal and Polymer Assemblies

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Publisher : Author House
ISBN 13 : 149692553X
Total Pages : 229 pages
Book Rating : 4.4/5 (969 download)

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Book Synopsis Nondestructive Evaluation of Adhesive Bonds Using 20 MHz and 25 kHz Ultrasonic Frequencies on Metal and Polymer Assemblies by : Gilbert B. Chapman II

Download or read book Nondestructive Evaluation of Adhesive Bonds Using 20 MHz and 25 kHz Ultrasonic Frequencies on Metal and Polymer Assemblies written by Gilbert B. Chapman II and published by Author House. This book was released on 2014-07-17 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demands for improvements in aerospace and automotive energy-efficiency, performance, corrosion resistance, body stiffness and style have increased the use of adhesive bonds to help meet those demands, by providing joining technology that accommodates a wider variety of materials and design options. However, the history of adhesive bond performance clearly indicates the need for a robust method of assuring the existence of the required consistent level of adhesive bond integrity in every bonded region. The Quality Assurance of Adhesive Bonds by Ultrasonic Nondestructive Testing technology put forth in this book meets that need by describing two new, complementary ultrasonic techniques for the evaluation of these bonds, and thus provide improvements over previous methods. The development of a 20 MHz pulse-echo method for nondestructive evaluation of adhesive bonds will accomplish the assessment of bond joints with adhesive as thin as 0.1 mm. This new method advances the state of the art by providing a high-resolution, phase-sensitive procedure that identifies the bond state at each interface of the adhesive with the substrate(s), by the acquisition and analysis of acoustic echoes reflected from interfaces between layers with large acoustic impedance mismatch. Because interface echo amplitudes are marginal when the acoustic impedance of the substrate is close to that of the adhesive, a 25 kHz Lamb wave technique was developed to be employed in such cases, albeit with reduced resolution. Modeling the ultrasonic echoes and Lamb-wave signals was accomplished using mathematical expressions developed from the physics of acoustic transmission, attenuation and reflection in layered media. The models were validated by experimental results from a variety of bond joint materials, geometries and conditions, thereby confirming the validity of the methodology used for extracting interpretations from the phase-sensitive indications, as well as identifying the range and limits of applications. Results from the application of both methodologies to laboratory specimens and to samples from production operations are reported herein, and show that bond-joint integrity can be evaluated effectively over the range of materials and geometries addressed.

Acousto-Ultrasonics

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ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Acousto-Ultrasonics by : A. Vary

Download or read book Acousto-Ultrasonics written by A. Vary and published by . This book was released on 1991 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The acousto-ultrasonic technique was devised to assess diffuse flaw populations and any associated changes of the mechanical properties of composites and composite- like materials. Acousto-ultrasonics has been used to evaluate fiber reinforced composites, adhesive bonds, paper and wood products, cable and rope, and also human bone. The potentials and limitations of the technique are reviewed. Basic methods and quidelines are discussed. The underlying hypothesis for acousto ultrasonic materials evaluation is stated and needs for theory and signal analysis development are indicated.

The International Handbook of FRP Composites in Civil Engineering

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Publisher : CRC Press
ISBN 13 : 0849320135
Total Pages : 708 pages
Book Rating : 4.8/5 (493 download)

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Book Synopsis The International Handbook of FRP Composites in Civil Engineering by : Manoochehr Zoghi

Download or read book The International Handbook of FRP Composites in Civil Engineering written by Manoochehr Zoghi and published by CRC Press. This book was released on 2013-09-26 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fiber-reinforced polymer (FRP) composites have become an integral part of the construction industry because of their versatility, enhanced durability and resistance to fatigue and corrosion, high strength-to-weight ratio, accelerated construction, and lower maintenance and life-cycle costs. Advanced FRP composite materials are also emerging for a wide range of civil infrastructure applications. These include everything from bridge decks, bridge strengthening and repairs, and seismic retrofit to marine waterfront structures and sustainable, energy-efficient housing. The International Handbook of FRP Composites in Civil Engineering brings together a wealth of information on advances in materials, techniques, practices, nondestructive testing, and structural health monitoring of FRP composites, specifically for civil infrastructure. With a focus on professional applications, the handbook supplies design guidelines and standards of practice from around the world. It also includes helpful design formulas, tables, and charts to provide immediate answers to common questions. Organized into seven parts, the handbook covers: FRP fundamentals, including history, codes and standards, manufacturing, materials, mechanics, and life-cycle costs Bridge deck applications and the critical topic of connection design for FRP structural members External reinforcement for rehabilitation, including the strengthening of reinforced concrete, masonry, wood, and metallic structures FRP composites for the reinforcement of concrete structures, including material characteristics, design procedures, and quality assurance–quality control (QA/QC) issues Hybrid FRP composite systems, with an emphasis on design, construction, QA/QC, and repair Quality control, quality assurance, and evaluation using nondestructive testing, and in-service monitoring using structural health monitoring of FRP composites, including smart composites that can actively sense and respond to the environment and internal states FRP-related books, journals, conference proceedings, organizations, and research sources Comprehensive yet concise, this is an invaluable reference for practicing engineers and construction professionals, as well as researchers and students. It offers ready-to-use information on how FRP composites can be more effectively utilized in new construction, repair and reconstruction, and architectural engineering.

Infrastructure Health in Civil Engineering

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Publisher : CRC Press
ISBN 13 : 1439866546
Total Pages : 684 pages
Book Rating : 4.4/5 (398 download)

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Book Synopsis Infrastructure Health in Civil Engineering by : Mohammed M. Ettouney

Download or read book Infrastructure Health in Civil Engineering written by Mohammed M. Ettouney and published by CRC Press. This book was released on 2011-09-27 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continually increasing demands on infrastructures mean that maintenance and renewal require timely, appropriate action that maximizes benefits while minimizing cost. To be as well informed as possible, decision-makers must have an optimal understanding of an infrastructure's condition-what it is now, and what it is expected to be in the future. Wri

British Journal of Non-destructive Testing

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Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis British Journal of Non-destructive Testing by :

Download or read book British Journal of Non-destructive Testing written by and published by . This book was released on 1994 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Infrastructure Health in Civil Engineering (Two-Volume Set)

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Publisher : CRC Press
ISBN 13 : 1439870659
Total Pages : 1320 pages
Book Rating : 4.4/5 (398 download)

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Book Synopsis Infrastructure Health in Civil Engineering (Two-Volume Set) by : Mohammed M. Ettouney

Download or read book Infrastructure Health in Civil Engineering (Two-Volume Set) written by Mohammed M. Ettouney and published by CRC Press. This book was released on 2022-01-18 with total page 1320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume set discusses the importance of linking the decision making concept to damage identification and structural modeling. It examines the process of addressing and maintaining structural health, including measurements, structural identification, and damage identification and discusses the theoretical and practical issues involved for each aspect. Emphasizing state-of-the-art practice as well as future directions, this text also features numerous practical case studies and covers the latest techniques in sensing and sensor utilization.

Non-Destructive Testing of Structures

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Publisher : MDPI
ISBN 13 : 3039439650
Total Pages : 440 pages
Book Rating : 4.0/5 (394 download)

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Book Synopsis Non-Destructive Testing of Structures by : Magdalena Rucka

Download or read book Non-Destructive Testing of Structures written by Magdalena Rucka and published by MDPI. This book was released on 2021-02-16 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Special Issue “Non-Destructive Testing of Structures” has been proposed to present the recent developments in the field of the diagnostics of structural materials and components in civil and mechanical engineering. The papers highlighted in this editorial concern various aspects of non-invasive diagnostics, including such topics as the condition assessments of civil and mechanical structures and the connections of structural elements, the inspection of cultural heritage monuments, the testing of structural materials, structural health monitoring systems, the integration of non-destructive testing methods, advanced signal processing for the non-destructive testing of structures (NDT), damage detection and damage imaging, as well as modeling and numerical analyses for supporting structural health monitoring (SHM) systems.

Metals Abstracts

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ISBN 13 :
Total Pages : 1042 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Metals Abstracts by :

Download or read book Metals Abstracts written by and published by . This book was released on 1998 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Feasibility of Inspecting Adhesive Bonded Structures for Bond Strength Using Ultrasonic Spectroscopy

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ISBN 13 :
Total Pages : 53 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Feasibility of Inspecting Adhesive Bonded Structures for Bond Strength Using Ultrasonic Spectroscopy by : T. J. Igielski

Download or read book Feasibility of Inspecting Adhesive Bonded Structures for Bond Strength Using Ultrasonic Spectroscopy written by T. J. Igielski and published by . This book was released on 1982 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study for using ultrasonic spectroscopy as a nondestructive evaluation method for determining the integrity of adhesive bonds between composite materials and metals was evaluated. Mechanical properties of bonded joints were compared to acoustic parameters for various adhesive substrate systems. (Author).

Standard Test Method for Evaluation of Bond Properties of FRP Composite Applied to Concrete Substrate using Single-Lap Shear Test

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)

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Book Synopsis Standard Test Method for Evaluation of Bond Properties of FRP Composite Applied to Concrete Substrate using Single-Lap Shear Test by :

Download or read book Standard Test Method for Evaluation of Bond Properties of FRP Composite Applied to Concrete Substrate using Single-Lap Shear Test written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

10th International Conference on FRP Composites in Civil Engineering

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Publisher : Springer Nature
ISBN 13 : 3030881660
Total Pages : 2516 pages
Book Rating : 4.0/5 (38 download)

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Book Synopsis 10th International Conference on FRP Composites in Civil Engineering by : Alper Ilki

Download or read book 10th International Conference on FRP Composites in Civil Engineering written by Alper Ilki and published by Springer Nature. This book was released on 2021-11-26 with total page 2516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume highlights the latest advances, innovations, and applications in the field of FRP composites and structures, as presented by leading international researchers and engineers at the 10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering (CICE), held in Istanbul, Turkey on December 8-10, 2021. It covers a diverse range of topics such as All FRP structures; Bond and interfacial stresses; Concrete-filled FRP tubular members; Concrete structures reinforced or pre-stressed with FRP; Confinement; Design issues/guidelines; Durability and long-term performance; Fire, impact and blast loading; FRP as internal reinforcement; Hybrid structures of FRP and other materials; Materials and products; Seismic retrofit of structures; Strengthening of concrete, steel, masonry and timber structures; and Testing. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster multidisciplinary collaboration among different specialists.

Advanced Polymers Abstracts

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ISBN 13 :
Total Pages : 736 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Advanced Polymers Abstracts by :

Download or read book Advanced Polymers Abstracts written by and published by . This book was released on 1996 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Acousto-Ultrasonics

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Publisher : Springer Science & Business Media
ISBN 13 : 1475719655
Total Pages : 348 pages
Book Rating : 4.4/5 (757 download)

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Book Synopsis Acousto-Ultrasonics by : J. Duke

Download or read book Acousto-Ultrasonics written by J. Duke and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finding and slzmg cracks and other crack-like discontinuities has been the center of attention for scientists and engineers developing and using nondestructive evaluation (NDE) technology. However, with advanced mate rials being "engineered" and used in critical structural components, a new for NDE has emerged. Whereas many traditional engineering materi challenge als fail due to the initiation and self-similar propagation of a crack, reinforced composite materials degrade and fail in a manner more analogously to the collapse of a structure. Consequently the NDE of such materials involves assessing the combined effect of the material's damaged condition rather than identifying and sizing single critical imperfection. In 1979 Alex Vary, seeking to address the challenge confronting the NDE of advanced fiber reinforced composite materials began work on a new method of materials characterization. Focusing on the problem of evaluating graphite fiber reinforcedl epoxy laminated plates; Vary used a piezoelectric transducer to excite a mechanical disturbance in a plate and, with a sensi tive piezoelectric transducer monitored the disturbance on the same surface of the plate. (Placing the transducers on the same surface was primarily for practical purpose but their displacement in the direction of anticipated service load was of fundamental significance!) To quantify this observation, he counted the number of excursions, of the resulting electrical signal, above a arbitrary voltage threshold; a procedure frequently used for acoustic emission signal analysis.

Chemical Abstracts

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ISBN 13 :
Total Pages : 2668 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Chemical Abstracts by :

Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2668 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Annual Book of ASTM Standards

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ISBN 13 :
Total Pages : 1710 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Annual Book of ASTM Standards by : ASTM International

Download or read book Annual Book of ASTM Standards written by ASTM International and published by . This book was released on 2003 with total page 1710 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Applied mechanics reviews

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ISBN 13 :
Total Pages : 400 pages
Book Rating : 4.3/5 (243 download)

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Book Synopsis Applied mechanics reviews by :

Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: