TY - JOUR
AU - Wallace, B.
AB - A testing apparatus featuring rotating bending fatigue techniques was designed and constructed to investigate the fatigue behavior of full-sized threaded connections used to couple offshore piping and structures. Rotating bending tests were performed where flexural loads are applied to the pipe with a hydraulic loading system while simultaneously rotating the pipe by belt drive attached to an electric motor. While rotating bending fatigue testing is not a new concept, the relatively large scale of the tests presented special problems that make the apparatus distinctive. This rotating bending apparatus allows more rapid testing than conventional closed-loop systems. Additionally, conventional closed-loop axial fatigue tests would have required a testing frame with fatigue load capacity exceeding 4455 kN (1,000,000 lbs). Several specially manufactured devices are featured that require large service loads combined with exacting machine tolerances. Currently, a fatigue frequency of 2.0 Hz has been achieved with an equivalent deformation range of 25.4 mm (1.0 in.). Faster speeds are believed possible.
TI - Large-scale rotating bending fatigue tests for offshore pipe connections
JO - Experimental Mechanics
DO - 10.1007/BF02317851
DA - 2006-01-21
UR - https://www.deepdyve.com/lp/springer-journals/large-scale-rotating-bending-fatigue-tests-for-offshore-pipe-ww75GhybOL
SP - 147
EP - 153
VL - 37
IS - 2
DP - DeepDyve
ER -