Download or read book Ultrasonic Detection Identification and Sizing of Cracks in Steel Bridge Pins written by John Christian Duke and published by . This book was released on 1999 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes an extension of work previously reported in VTRC 99-R3 "Enhanced Ultrasonic Inspection of Steel Bridge Components" and is a condensation of a thesis.
Download or read book Enhanced Ultrasonic Inspection of Steel Bridge Pin Components written by Margarit G. Lozev and published by . This book was released on 1998 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the development of a technique for obtaining a reliable assessment of the condition of steel bridge pins already determined by ultrasound to contain imperfections. The details of a technique for performing high-definition ultrasonic scans of pins in the field are described. Results demonstrating this technique on specially fabricated calibration pins with actual cracks and actual bridge pins in the field are presented. A mathematical model for tracing the propagation of ultrasonic sound rays is also described. This model can be used as a tool to help interpret scanned images of imperfect pins. The researchers recommend that future research be carried out to develop further the instrumentation equipment and models needed for accurate field assessment of steel bridge pins.
Download or read book Structural Materials Technology written by and published by . This book was released on 1998 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bridge Management 4 written by M. J. Ryall and published by Thomas Telford. This book was released on 2000 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings are from The Fourth International Conference on Bridge Management that consolidated the best and, more importantly, up-to-date research conducted in the field of bridge management. Since the first conference in 1990 the scientific art of bridge management has advanced at an astonishing rate. There has been a change from a curative to a preventative approach to bridge management, promising an increased longevity for the next generation of bridges and reduced whole-life costs, and practical and economical solutions have been found for some recurring problems.
Download or read book Structural Materials Technology written by Paul E. Hartbower and published by CRC Press. This book was released on 2020-08-23 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of papers presented in the NDT Conference held on February 20-23, 1996 at San Diego, California. The conference provided an opportunity to share experience and provide additional input to the Federal Highway Administration.
Download or read book Structural Sensing Health Monitoring and Performance Evaluation written by D. Huston and published by CRC Press. This book was released on 2010-09-21 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural health monitoring (SHM) uses one or more in situ sensing systems placed in or around a structure, providing real-time evaluation of its performance and ultimately preventing structural failure. Although most commonly used in civil engineering, such as in roads, bridges, and dams, SHM is now finding applications in other engineering envir
Download or read book Bridge Inspector s Training Manual written by United States. Federal Highway Administration and published by . This book was released on 1979 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bridge Inspector s Training Manual written by United States. Public Roads Bureau and published by . This book was released on 1970 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Analysis of Historic Construction Preserving Safety and Significance Two Volume Set written by Dina D'Ayala and published by CRC Press. This book was released on 2008-06-02 with total page 1590 pages. Available in PDF, EPUB and Kindle. Book excerpt: The successful preservation of an historic building, complex or city depends on the continued use and daily care that come with it. The possibility of continued use depends on the adaptation of the building to modern standards and practice of living, requiring changes in constructional or structural features. Conservation engineering is the process
Download or read book Inspection of Historic Steel Bridges Using Ultrasonic Phased Array written by Alejandra L. Roldan Arcos and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of ultrasonic phased array (UPA) technology for inspection of the trunnion bearing pin of the 100-year old Salmon Bay Bascule Bridge is the focus of this research. To thoroughly investigate the bearing pin, two main objectives are addressed: the development of a UPA system, including the design of a case that uses a Poly Methyl Meth Acrylate (PMMA) material to house the transducer, and the implementation of the system in the field to test the feasibility of the UPA system and its application as a nondestructive testing unit. Two different testing settings are carried out in this research. The first study is performed in a lab-based setting on a mock-up model pin. This model is used as a reference to provide the calibration of the UPA system using the exterior edge, two keyholes, and three diagonal interior grease holes. The second study is performed in a field-based setting on the authentic trunnion bearing pin taken out of service from the Salmon Bay Bridge in Seattle, Washington, currently residing at the Riverside Campus. This pin has three similar diagonal holes, keyholes, and unknown internal defects. Realtime measurements using the UPA system is used to identify the exterior surfaces and the keyholes of the original pin. The results of the inspection of the pins using the UPA system indicate the accuracy of the real-time data taken from the probe measurements. It was limited to seeing perpendicular defects and exterior sides, and could not identify the diagonal grease hole within both pin parts. It did, however, identify the keyholes, and was later verified by visual inspection once the sleeves were removed. The original pin showed no internal defects. For future research in nondestructive testing used in historic trunnion pins, it is recommended to combine this technology with an automatic system that allows the reduction of human interaction with the inspection. A membrane-like surface adaptable to rough faces, along with a constant flow of water between the wedge and surface, would facilitate the need to remove the PMMA case out of the pin to re-apply couplant for inspections. Finally, a modified angled wedge could also be applied within the PMMA case to search for different angled cracking. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/152486
Download or read book Highway Bridge Inspections written by United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Highways and Transit and published by . This book was released on 2007 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Public Roads written by and published by . This book was released on 1999 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bridge Engineering Handbook Second Edition written by Wai-Fah Chen and published by CRC Press. This book was released on 2014-01-24 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 140 experts, 14 countries, and 89 chapters are represented in the second edition of the Bridge Engineering Handbook. This extensive collection highlights bridge engineering specimens from around the world, contains detailed information on bridge engineering, and thoroughly explains the concepts and practical applications surrounding the subject. Published in five books: Fundamentals, Superstructure Design, Substructure Design, Seismic Design, and Construction and Maintenance, this new edition provides numerous worked-out examples that give readers step-by-step design procedures, includes contributions by leading experts from around the world in their respective areas of bridge engineering, contains 26 completely new chapters, and updates most other chapters. It offers design concepts, specifications, and practice, as well as the various types of bridges. The text includes over 2,500 tables, charts, illustrations, and photos. The book covers new, innovative and traditional methods and practices; explores rehabilitation, retrofit, and maintenance; and examines seismic design and building materials. The fifth book, Construction and Maintenance contains 19 chapters, and covers the practical issues of bridge structures. What’s New in the Second Edition: Includes nine new chapters: Steel Bridge Fabrication, Cable-Supported Bridge Construction, Accelerated Bridge Construction, Bridge Management Using Pontis and Improved Concepts, Bridge Maintenance, Bridge Health Monitoring, Nondestructive Evaluation Methods for Bridge Elements, Life-Cycle Performance Analysis and Optimization, and Bridge Construction Methods Rewrites the Bridge Construction Inspection chapter and retitles it as: Bridge Construction Supervision and Inspection Expands and rewrites the Maintenance Inspection and Rating chapter into three chapters: Bridge Inspection, Steel Bridge Evaluation and Rating, and Concrete Bridge Evaluation and Rating; and the Strengthening and Rehabilitation chapter into two chapters: Rehabilitation and Strengthening of Highway Bridge Superstructures, and Rehabilitation and Strengthening of Orthotropic Steel Bridge Decks This text is an ideal reference for practicing bridge engineers and consultants (design, construction, maintenance), and can also be used as a reference for students in bridge engineering courses.
Download or read book Development of a New System for Detecting Fatigue Cracks in Steel Bridges written by J. R. Barton and published by . This book was released on 1973 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nondestructive detection and characterization of fatigue cracks during field inspection of steel bridge structures are put in perspective in terms of the magnitude of the problem and viable nondestructive methods. The results of nondestructive method assessment, selection, evaluation, and experimental confirmation are presented in detail. Developed as a useful and effective solution to the problem, the inspection system consists of two independent, complementary, lightweight, battery-powered electronic instruments-an acoustic crack detector (ACD), which uses ultrasonic principles, automatic signal analysis, and a simple digital data display for rapid survey, and a magnetic crack definer (MCD), which uses magnetic principles and a simple ON-OFF light data display for defining the precise location and crack length. The features and functioning of the equipment are briefly described, and laboratory and field demonstrations, presentations, and field inspections are reviewed. The technical basis for equipment development, including equipment concepts, is summarized.
Download or read book Bridge Engineering Handbook Five Volume Set written by Wai-Fah Chen and published by CRC Press. This book was released on 2014-01-24 with total page 3130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 140 experts, 14 countries, and 89 chapters are represented in the second edition of the Bridge Engineering Handbook. This extensive collection provides detailed information on bridge engineering, and thoroughly explains the concepts and practical applications surrounding the subject, and also highlights bridges from around the world.Published
Download or read book Structural Materials Technology written by Robert J. Scancella and published by CRC Press. This book was released on 1994-01-01 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transportation Research Record written by and published by . This book was released on 2000 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
