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A.F. Dier* and R.E. Hobbs+

*Wimpey Offshore Engineers and Constructors Ltd, (formerly Research Fellow, Imperial College)
+Department of Civil Engineering, Imperial College, London

doi:10.4203/ccp.2.27.4

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A.F. Dier, R.E. Hobbs, "Computer Control of a Complex Fatigue Test", in B.H.V. Topping, (Editor), "Proceedings of the Second International Conference on Civil and Structural Engineering Computing", Civil-Comp Press, Edinburgh, UK, pp 331-336, 1985. doi:10.4203/ccp.2.27.4

Abstract

This paper describes the rig used for the full scale fatigue testing of an oilfield production riser connection. The complex block-loading spectrum and the need to coordinate data acquisition with the loading made a real time computer-based control system an attractive, perhaps an essential, solution. It is seen that in the integrated system of electronics, servo hydraulics and rig hardware, the computer functions as a man/machine interface. Aspects of safety to which the computer contributed are highlighted, but the importance of electro-mechanical devices is also recognised. It was found that a multiple checking technique was a valuable tool in avoiding nuisance tripping of the safety circuit. Finally, the main advantages of the computer-based control system are summarised.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 2/3 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON CIVIL AND STRUCTURAL ENGINEERING COMPUTING Edited by: B.H.V. Topping Paper XXVII.4 Computer Control of a Complex Fatigue Test A.F. Dier* and R.E. Hobbs+ *Wimpey Offshore Engineers and Constructors Ltd, (formerly Research Fellow, Imperial College) +Department of Civil Engineering, Imperial College, London doi:10.4203/ccp.2.27.4 purchase the full-text of this paper Full Bibliographic Reference for this paper A.F. Dier, R.E. Hobbs, "Computer Control of a Complex Fatigue Test", in B.H.V. Topping, (Editor), "Proceedings of the Second International Conference on Civil and Structural Engineering Computing", Civil-Comp Press, Edinburgh, UK, pp 331-336, 1985. doi:10.4203/ccp.2.27.4 Abstract This paper describes the rig used for the full scale fatigue testing of an oilfield production riser connection. The complex block-loading spectrum and the need to coordinate data acquisition with the loading made a real time computer-based control system an attractive, perhaps an essential, solution. It is seen that in the integrated system of electronics, servo hydraulics and rig hardware, the computer functions as a man/machine interface. Aspects of safety to which the computer contributed are highlighted, but the importance of electro-mechanical devices is also recognised. It was found that a multiple checking technique was a valuable tool in avoiding nuisance tripping of the safety circuit. Finally, the main advantages of the computer-based control system are summarised. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £90 +P&P)
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