Does anyone know where I can get fatigue limit data for ASTM A500 Steel,Grade B, square tubing? I need some data to see what % of tensile strength I can expect fatigue to occur at during 2 million cycles.
The AASHTO publication, " Standard Specifications for Structural Supports for Highway Signs, Luminaries,and Traffic Signals", Section 1.9.6 gives an equation for wind velocity. Is this equation only applicable to a first mode frequency or can it be applied to find the wind velocity of...
I am in the process of vibration testing 30 ft lamp poles showing fatigue failure at the base. I'm wondering if I drive the pole with a electric eccentric vibrator will I acheive the desired resonant frequency? I feel that perhaps this will only give me the 1st modal frequencies and I believe...
