Download or read book Fatigue Failure of Aluminum Luminaire Supports written by Ralph A. McCagg and published by . This book was released on 1977 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue testing and failure analysis of aluminum luminaire support structures written by Gary R. Consolazio and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue Testing and Failure Analysis of Aluminum Luminaire Support Structures written by Kevin W. Johns and published by . This book was released on 1998 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue resistant Design of Cantilevered Signal Sign and Light Supports written by Robert Joseph Dexter and published by Transportation Research Board. This book was released on 2002 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue Performance of Variable Message Sign Luminaire Support Structures Fatigue testing and failure analysis of aluminum luminaire support structures written by Gary R. Consolazio and published by . This book was released on 1998 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue Performance of Variable Message Sign Luminaire Support Structures written by Gary R. Consolazio and published by . This book was released on 1998 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue Behavior of Highway Welded Aluminum Light Pole Support Structures written by Diya Azzam and published by . This book was released on 2006 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A number of localized failures have developed in cantilevered supports of highway signs, luminaries and traffic signals over the past ten years. Failures due to fatigue crack growth around welded structural details have occurred in societ connections within New Jersey, Iowa, Florida, Wisconsin, California, Massachusetts and Wyoming. Many of these failures have resulted from the interaction of the wind and the structures, resulting in numerous applied stress cycles. Accordingly, fatigue tests were conducted on full-scale welded aluminum light poles containing through plate and shoe base socket connections. Through plate and shoe base socket connections are used to anchor aluminum light poles to a break away foundation. Initiative for the study was a lack of available data for aluminum structural details, and the result of detrimental changes to specifications governing the design and proportioning of welded aluminum luminaire supports subjected to fatigue loading. As such, fatigue tests were conducted on light poles containing both shoe base and through plate socket connection details order to study the fatigue behavior and determine a lower bound resistance suitable for design in terms of S-N curves. Parametric studies using the finite element method were conducted on both detail types in order to understand the nature of the local stress fields governing fatigue behavior and how changes in geometry affect the local stresses. As stress range is the primary parameter used to describe fatigue strength, hole drilling strain measurements were utilized to examine whether the light pole details contained significant tensile residual stresses normally assumed to exist with welded construction ..."--P. iii-iv.

Download or read book Fatigue Behavior of the Reinforced Electrical Access Hole in Aluminum Light Support Structures written by Clark Schlatter and published by . This book was released on 2017 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aluminum light poles are constructed from extruded aluminum tube in order to minimize the use of material. This in turn makes the pole lighter and allows for the electrical wires for the light to be hidden inside the pole. These wires must still be accessed for installation and maintenance purposes. An electrical access hole with a cover is placed near the bottom of the pole to make the wires accessible.This electrical access hole is a point of structural weakness in the pole; therefore, the electrical access hole is often reinforced. This reinforcing may solve potential static load problems, but the disruption in the load path is a potential fatigue crack initiation point. This research centered on how fatigue failure occurs in cast reinforced electrical access holes.The majority of the experimental research consisted of the cyclical bending of tubes with the electrical access holes centered in the extreme tension fiber. Ten poles with electrical access holes were broken in fatigue. The stress range applied to these varied from 63 MPa (9.1 ksi) at the highest to 17 MPa (2.5 ksi) at the lowest. Three tensile tests and a high shear fatigue test were conducted to supplement would could not be observed from the cyclical bending tests.Finite element models were developed to understand the mechanical response of the electrical access hole. These were similar to the bending and tensile samples. A finite element model in a cantilevered position was modeled as well. These models allowed for stress maps to be examined and a potential explanation for initial cracking to be developed. The initial cracking of the electrical access hole occurs in the weld near the minor axis of the elliptical hole. This initial cracking was due to distortion of the reinforcing of the electrical access hole. These cracks either propagate through the reinforcing or join together to cause final failure. The stress range versus the cycles to failure for the electrical access hole was plotted to compare the data to known aluminum fatigue details. The data all fell between categories C and D for aluminum. Further research is needed to verify if a D detail can be used for designing the electrical access hole in fatigue.

Download or read book Structural Analysis of Sign Bridge Structures and Luminaire Supports written by and published by . This book was released on 2004 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue Performance of Variable Message Sign Luminaire Support Structures written by Gary R. Consolazio and published by . This book was released on 1998 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Failure Analysis Structural Health Monitoring of Structure and Infrastructure Components written by Gobinath Ravindran and published by BoD – Books on Demand. This book was released on 2023-10-18 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Failure Analysis - Structural Health Monitoring of Structure and Infrastructure Components is a collection of chapters written by academicians, researchers, and practicing engineers from all over the world. The chapters focus on some developments as well as problems in structural health monitoring (SHM) in civil engineering structures and infrastructures. The book covers a variety of multidisciplinary topics, including SHM, risk analysis, seismic analysis, and various modeling and simulation methodologies. This book is an excellent resource for undergraduate and postgraduate students, academics, and researchers across a wide variety of engineering disciplines, as well as for practicing engineers and other professionals in the engineering industry.

Download or read book Fatigue Loading and Design Methodology for High Mast Lighting Towers written by Robert J. Connor and published by Transportation Research Board. This book was released on 2012 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB’s National Cooperative Highway Research Program (NCHRP) Report 718: Fatigue Loading and Design Methodology for High-Mast Lighting Towers provides criteria for the fatigue design of high-mast lighting towers.

Download or read book Wind Loading as a Fatigue Factor on Lighting Standard Mounting Bolts written by Kenneth O. Pinkerman and published by . This book was released on 1989 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guide Design Specification for Bridge Temporary Works written by American Association of State Highway and Transportation Officials and published by AASHTO. This book was released on 1995 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report written by and published by . This book was released on 1964 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structural Supports for Highway Signs Luminaires and Traffic Signals written by Fouad H. Fouad and published by Transportation Research Board. This book was released on 2003 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Testing of Luminaire Supports Final Report written by D. B. Chisholm and published by . This book was released on 1973 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: