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Author: Richard P. Joyce
Publisher:
ISBN:
Category : Concrete bridges
Languages : en
Pages : 186
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Book Description
Delaminations in concrete bridge decks are a major cause of bridge maintenance problems. Sonic inspection techniques are currently being used for condition surveys to identify those bridge decks on which expenditures of funds are both necessary and cost effective. While the current sonic methods are reliable, they are too slow for the survey application. A need exists for a rapid, non-destructive method for assessing the general condition of the bridge decks without closing the deck to traffic. The inspection techniques considered for use were infrared thermography, electro-magnetic sounding, nuclear radiation and acoustic techniques. Electromagnetic sounding, by using pulsed radar, has the best potential for use in the development of a rapid survey system.
Author: Richard P. Joyce
Publisher:
ISBN:
Category : Concrete bridges
Languages : en
Pages : 186
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Book Description
Delaminations in concrete bridge decks are a major cause of bridge maintenance problems. Sonic inspection techniques are currently being used for condition surveys to identify those bridge decks on which expenditures of funds are both necessary and cost effective. While the current sonic methods are reliable, they are too slow for the survey application. A need exists for a rapid, non-destructive method for assessing the general condition of the bridge decks without closing the deck to traffic. The inspection techniques considered for use were infrared thermography, electro-magnetic sounding, nuclear radiation and acoustic techniques. Electromagnetic sounding, by using pulsed radar, has the best potential for use in the development of a rapid survey system.
Author: Danny Van Hemelrijck
Publisher: CRC Press
ISBN: 1315647540
Category : Technology & Engineering
Languages : en
Pages : 592
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Book Description
Non-Destructive Testing (NDT) is of worldwide significance, and is strongly related to the detection of damage in engineering structures (buildings, bridges, aircrafts, ships, pressure vessels, etc.) using non-invasive techniques (ultrasound, X-rays, Radar, neutrons, thermography, vibrations, acoustic emission, etc.). Emerging Technologies in Non-D
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 776
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Book Description
Author: Carosena Meola
Publisher: MDPI
ISBN: 3039437313
Category : Technology & Engineering
Languages : en
Pages : 174
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Book Description
In this era of technological progress and given the need for welfare and safety, everything that is manufactured and maintained must comply with such needs. We would all like to live in a safe house that will not collapse on us. We would all like to walk on a safe road and never see a chasm open in front of us. We would all like to cross a bridge and reach the other side safely. We all would like to feel safe and secure when taking a plane, ship, train, or using any equipment. All this may be possible with the adoption of adequate manufacturing processes, with non-destructive inspection of final parts and monitoring during the in-service life of components. Above all, maintenance should be imperative. This requires effective non-destructive testing techniques and procedures. This Special Issue is a collection of some of the latest research in these areas, aiming to highlight new ideas and ways to deal with challenging issues worldwide. Different types of materials and structures are considered, different non-destructive testing techniques are employed with new approaches for data treatment proposed as well as numerical simulations. This can serve as food for thought for the community involved in the inspection of materials and structures as well as condition monitoring.
Author: Voichita Bucur
Publisher: Springer Science & Business Media
ISBN: 9048195500
Category : Nature
Languages : en
Pages : 404
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Book Description
In the last quarter century, delamination has come to mean more than just a failure in adhesion between layers of bonded composite plies that might affect their load-bearing capacity. Ever-increasing computer power has meant that we can now detect and analyze delamination between, for example, cell walls in solid wood. This fast-moving and critically important field of study is covered in a book that provides everyone from manufacturers to research scientists the state of the art in wood delamination studies. Divided into three sections, the book first details the general aspects of the subject, from basic information including terminology, to the theoretical basis for the evaluation of delamination. A settled terminology in this subject area is a first key goal of the book, as the terms which describe delamination in wood and wood-based composites are numerous and often confusing. The second section examines different and highly specialized methods for delamination detection such as confocal laser scanning microscopy, light microscopy, scanning electron microscopy and ultrasonics. Ways in which NDE (non-destructive evaluation) can be employed to detect and locate defects are also covered. The book’s final section focuses on the practical aspects of this defect in a wide range of wood products covering the spectrum from trees, logs, laminated panels and glued laminated timbers to parquet floors. Intended as a primary reference, this book covers everything from the microscopic, anatomical level of delamination within solid wood sections to an examination of the interface of wood and its surface coatings. It provides readers with the perspective of industry as well as laboratory and is thus a highly practical sourcebook for wood engineers working in manufacturing as well as a comprehensively referenced text for materials scientists wrestling with the theory underlying the subject.
Author: Jerome P. Lynch
Publisher: Elsevier
ISBN: 0857099132
Category : Technology & Engineering
Languages : en
Pages : 599
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Book Description
Sensors are used for civil infrastructure performance assessment and health monitoring, and have evolved significantly through developments in materials and methodologies. Sensor Technologies for Civil Infrastructure Volume I provides an overview of sensor hardware and its use in data collection. The first chapters provide an introduction to sensing for structural performance assessment and health monitoring, and an overview of commonly used sensors and their data acquisition systems. Further chapters address different types of sensor including piezoelectric transducers, fiber optic sensors, acoustic emission sensors, and electromagnetic sensors, and the use of these sensors for assessing and monitoring civil infrastructures. Developments in technologies applied to civil infrastructure performance assessment are also discussed, including radar technology, micro-electro-mechanical systems (MEMS) and nanotechnology. Sensor Technologies for Civil Infrastructure provides a standard reference for structural and civil engineers, electronics engineers, and academics with an interest in the field. - Describes sensing hardware and data collection, covering a variety of sensors - Examines fiber optic systems, acoustic emission, piezoelectric sensors, electromagnetic sensors, ultrasonic methods, and radar and millimeter wave technology - Covers strain gauges, micro-electro-mechanical systems (MEMS), multifunctional materials and nanotechnology for sensing, and vision-based sensing and lasers
Author: Krzysztof Schabowicz
Publisher: MDPI
ISBN: 3039216902
Category : Science
Languages : en
Pages : 448
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Book Description
This book was proposed and organized as a means to present recent developments in the field of nondestructive testing of materials in civil engineering. For this reason, the articles highlighted in this editorial relate to different aspects of nondestructive testing of different materials in civil engineering—from building materials to building structures. The current trend in the development of nondestructive testing of materials in civil engineering is mainly concerned with the detection of flaws and defects in concrete elements and structures, and acoustic methods predominate in this field. As in medicine, the trend is towards designing test equipment that allows one to obtain a picture of the inside of the tested element and materials. From this point of view, interesting results with significance for building practices have been obtained
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: Transportation Research Board
ISBN: 0309273404
Category : Social Science
Languages : en
Pages : 774
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Book Description
This report from the second Strategic Highway Research Program (SHRP 2), which is administered by the Transportation Research Board of the National Academies, describes development of nondestructive testing techniques that are capable of detecting and quantifying delaminations in HMA pavements. This NDT technique is applicable to construction, project design, and network-level assessments. This e-book contains 5 different volumes, the last 4 involving more technical descriptions of the project.
Author: Henrique L. M. dos Reis
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 290
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Book Description
An objective view of the relative advantages and limitations of the nondestructive testing and evaluation methods that are currently used in the inspection of bridge decks is presented and discussed. The three main nondestructive testing technologies that were evaluated are impact-echo, ground penetrating radar, and infrared thermography. Nondestructive testing and evaluation procedures, including methodology and equipment to evaluate concrete bridge decks with asphalt overlays, are also presented and discussed. Current results indicate that a combination of ground penetrating radar and infrared thermography would provide the best methodology for evaluating the structural integrity, e.g., delaminations, of concrete bridge decks with overlays. Furthermore, current results also indicate that the impact-echo method shows promising future development towards the nondestructive evaluation of bridge superstructures.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
