Documents in the NTIS Technical Reports collection are the results of federally funded research. They are directly submitted to or collected by NTIS from Federal agencies for permanent accessibility to industry, academia and the public.  Before purchasing from NTIS, you may want to check for free access from (1) the issuing organization's website; (2) the U.S. Government Printing Office's Federal Digital System website http://www.gpo.gov/fdsys; (3) the federal government Internet portal USA.gov; or (4) a web search conducted using a commercial search engine such as http://www.google.com.
Accession Number PB2014-100894
Title Fatigue Performance of Brass Breakaway Light Pole Couplings.
Publication Date Apr 2013
Media Count 64p
Personal Author C. Hahin G. Banas J. Rudd
Abstract Breakaway couplings connect light pole bases to foundation anchor bolts and are intended to fracture on impact after vehicle collision to protect drivers and passengers from severe injury. The coupling consists of an internally threaded hollow hexagon made of half-hard CDA 360 brass with a thread-locked stainless steel stud. Several designs of the notched hexagonal shaped coupling were tested in bending by attaching them to a simulated pole tube and base and then inducing stresses by deflection of the tube by a hydraulic jack. Individual couplings were also fatigued in axial tension-compression by a servo-controlled universal testing machine.
Keywords Brasses
Breakaway couplings
Collision research
Couplings
Fatigue
Finite element method
Foundations
Impact tests
Lighting poles
Performance
Steels
Stresses


 
Source Agency Federal Highway Administration
NTIS Subject Category 85D - Transportation Safety
85H - Road Transportation
91B - Transportation & Traffic Planning
43G - Transportation
50A - Highway Engineering
Corporate Author Illinois Univ. at Chicago Circle. Urban Transportation Center.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1403
Contract Number N/A

Science and Technology Highlights

See a sampling of the latest scientific, technical and engineering information from NTIS in the NTIS Technical Reports Newsletter

Acrobat Reader Mobile    Acrobat Reader