High-cycle fatigue performance of high-mast illumination pole bases with pre-existing cracks
This paper presents the results of high-cycle fatigue testing of high-mast illumination poles
(HMIPs) with pre-existing cracks at the pole-to-base plate connection detail. Resonant
bending fatigue tests were conducted on five pairs of HMIP base specimens at nominal
stress ranges of 41.4 MPa (±20.7 MPa), 27.6 MPa (±13.8 MPa), 20.7 MPa (±10.3 MPa) and
6.9 MPa (±3.4 MPa). The length and depth of pre-existing cracks was measured and the
propagation of the individual crack was monitored throughout the testing using an ultrasonic …
(HMIPs) with pre-existing cracks at the pole-to-base plate connection detail. Resonant
bending fatigue tests were conducted on five pairs of HMIP base specimens at nominal
stress ranges of 41.4 MPa (±20.7 MPa), 27.6 MPa (±13.8 MPa), 20.7 MPa (±10.3 MPa) and
6.9 MPa (±3.4 MPa). The length and depth of pre-existing cracks was measured and the
propagation of the individual crack was monitored throughout the testing using an ultrasonic …