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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
Finite element method
Impact tests
Lighting poles

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

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