Blar i UiS Brage på forfatter "Karlsen, Øyvind"
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Comparative study on loosening of anti-loosening bolt and standard bolt system
Karlsen, Øyvind; Lemu, Hirpa Gelgele (Peer reviewed; Journal article, 2022)In general, bolted connections are exposed to vibrations or repeated over-loads that could lead to self-loosening due to loss of preload. Pre-tensioned bolts in ring flanges are critical parts in Offshore Floating Wind ... -
Effect and consequence analysis of expanding PIN-technology in various types of heavy machinery
Karlsen, Øyvind (PhD thesis UiS;, Doctoral thesis, 2023)Expanding pin systems can be applied in any joint, moveable, or fixed, in any type of machine, crane, or equipment, in almost any type of industry, globally. There are a variety of different versions of expanding pins ... -
Experimental and Numerical Studies of Stress Distribution in an Expanding Pin Joint System
Salahshour Langeroodi, Soheil; Karlsen, Øyvind; Lemu, Hirpa G. (Peer reviewed; Journal article, 2022)Pin joints are widely used mechanisms in different industrial machineries such as aircrafts, cranes, ships, and offshore drilling equipment providing a joint with possibility of relative rotation about one single axis. The ... -
Experimental and numerical study of Bondura® 6.6 PIN joints
Berkani, Imad; Karlsen, Øyvind; Lemu, Hirpa G. (Journal article; Peer reviewed, 2017)Pin joints are widely used in heavy-duty machinery such as aircrafts, cranes and offshore drilling equipment to transfer multi-dimensional shear forces. Their strength and service life depend on the clamping force in the ... -
An investigation of the effects and consequences of combining Expanding Dual Pin with radial spherical plain bearings
Karlsen, Øyvind; Lemu, Hirpa G.; Berkani, Imad (Peer reviewed; Journal article, 2022)An expanding pin locks the pin assembly to its supports and bearings and prevents any relative movements between the surfaces in contact. In this study, the diameter changes of the bearing inner ring as a function of the ... -
A Novel Technique for Temporarily Repair and Improvement of Damaged Pin Joint Support Bores
Karlsen, Øyvind; Lemu, Hirpa G.; Berkani, Imad (Peer reviewed; Journal article, 2022)Damaged support bores due to wear and ovality can be critical for a machine and its operation, in addition to representing a safety problem and risk of pin breakage. It can be a costly operation to perform the required ... -
Questionnarie-based Survey of Experiences with the Use of Expanding PIN Systems in Mechanical Joints
Lemu, Hirpa Gelgele; Karlsen, Øyvind (Peer reviewed; Journal article, 2021)In this paper, experiences with the use of expanding pins in mechanical joints in different equipment are investigated through a questionnaire-based survey, where six different sections are highlighted; Size of company, ... -
Safety related study of Expanding Pin systems application in lifting and drilling equipment within Construction, Offshore, and Marine sectors
Karlsen, Øyvind; Lemu, Hirpa G. (Peer reviewed; Journal article, 2021)A questionnaire-based survey has been performed among original equipment manufacturers (OEMs), sub-suppliers, engineering companies, end-users, service & maintenance, and “others”, as part of an investigation to clarify ... -
Study of Bondura® Expanding PIN System – Combined Axial and Radial Locking System
Akhtar, Muhammad Maaz; Karlsen, Øyvind; Lemu, Hirpa G. (Peer reviewed; Journal article, 2021)Bolted connections are widely used in parallel plates and flanged joints to axially lock using the preload generated by the tightening torque and to constrain radial movements of the flanges by the surface friction between ...