Presenters
Norman W. Hein, Jr.,
NPS-AOT
David Eggert,
NPS-AOT
There are very few papers that present the actual fatigue data for various grades of sucker rods from a variety of manufactures. This paper will provide information on the testing being conducted by one sucker rod manufacturer and the performance of high strength API D grade rods versus non-API extra high strength rods for air fatigue in rotary bending tests. Additionally, information will be provided on the relevance of these results and on the next phases of fatigue testing that is being planned.