Post delineator mechanical fatigue evaluation
tarafından
Zwahlen, Helmut T.
Başlık
:
Post delineator mechanical fatigue evaluation
Yazar
:
Zwahlen, Helmut T.
Yazar Ek Girişi
:
Zwahlen, Helmut T.
Fiziksel Tanımlama
:
xiii, 121 pages : illustrations ; 28 cm
Genel Not
:
Prepared in cooperation with the Federal Highway Administration and the Ohio Dept. of Transportation.
"April, 1989."
İçerik
:
Introduction -- Experimental approach -- Results. Review of damage -- Review of natural frequency and dynamic deflection (top of post test specimen) behavior -- Adjustment procedure to equalize the different free lengths of the post delineator test specimens -- Extrapolation of the static horizontal deflection from test specimens to a 48 inches free length post -- Preliminary testing for lexan delineator -- Preliminary test for XX, C, T and S posts -- Conclusions -- Testing recommendations -- Reference.
Özet
:
The mechanical fatigue performance to sinusoidal horizontal oscillations (at natural frequency of the post delineator test specimen, 16 in. free length) was investigated for four types of post delineators. One was an X-shaped post made of a polycarbonate material, two were fiberglass reinforced thermoplastic posts (T-shape and C-shape) and one was a round polyethylene tube. Three post delineator test specimens were tested for new post, post put into the ground and driven over once with the rear tire of a slow driving tractor, post driven over twice (in same direction) and post driven over three times.
Konu Başlığı
:
Road markings -- Testing.
Reflectors (Safety devices) -- Testing.
Tüzel Kişi Ek Girişi
:
Ohio. Department of Transportation.
Ohio University. Department of Industrial and Systems Engineering.
| Library | Materyal Türü | Demirbaş Numarası | Yer Numarası | Durumu/İade Tarihi |
|---|
| İnşaat Mühendisliği | Kitap | B027326 | TE228 .Z83 1989 | Transportation Collection |