ENG  Vol.3 No.5 , May 2011
Experimental and Numerical Study of the Effect of Surround Protection Technique on the Strain Measurement for Offshore Jacket Platform
Abstract: For strain measurement on offshore jacket platform in deep water, waterproof of strain foil is always an important issue, especially, due to the high pressure in deep water. The waterproof is difficult in two places, one is between the matrix structure and the protection structure, and another is between the lead wires and the protection structure. The surround protection technique discussed in this paper is conventional and ideal, and can be operative for a long time, up to five years. In this method, a metal case and tube is added on the local position, which increases the local rigidity, but the effect on the measurement of strain is not well studied. In this paper, the effect of the surround protection technique on the strain measurement is studied by using numerical and experimental methods, and the results show that the measurement error is well in the range permitted by engineering practice.
Cite this paper: nullY. Xu, "Experimental and Numerical Study of the Effect of Surround Protection Technique on the Strain Measurement for Offshore Jacket Platform," Engineering, Vol. 3 No. 5, 2011, pp. 485-490. doi: 10.4236/eng.2011.35056.

[1]   P. H. R. Lane, “Notes on the Use of Resistance Strain Gages,” Engineer, Vol. 204, No. 5315, 1957, pp. 812-815.

[2]   A. L. Window and G. S. Holister, “Strain Gauge Technology,” Ap-plied Science Publishers, London & New Jersey, 1982.

[3]   P. M. Palermo, “Experimental Stress Analysis Goes Deep,” Naval Engineers Journal, Vol. 87, No. 4, 1975, pp. 67-82. doi:10.1111/j.1559-3584.1975.tb03759.x

[4]   M. Dean III, “Vulcanized-rubber protection for Strain Gages in a Seawater Environment,” Experimental Mechanics, Vol. 17, No. 8, 1977, pp. 303-307.doi:10.1007/BF02324960

[5]   H. A. C. M. Spas, “Deformation Behavior of Large, High Pressure Vessel Flanges, Developments in Stress Analysis for Pressurized Components,” Applied Science Publisher, London, 1977.

[6]   A. J. Bush, “Soldered-Cap Strain Gages,” Machine Design, Vol. 34, No. 26, 1962, pp. 163-164.

[7]   W. F. Brace, “Effect of Pressure on Electrical-Resistance Strain Gages,” Experimental Mechanics, Vol. 4, No. 7, 1964, pp. 212-216. doi:10.1007/BF02323653

[8]   J. L. Gerden, “Effect of Pres-sure on Small Foil Strain Gages,” Experimental Mechanics, Vol. 3, No. 7, 1963, pp. 77-80.

[9]   A. S. Khan and J. C. Chen, “On the Measurement of Strain in the Hostile Environment of High-Pressure Water(80 MPa),” Experimental Mechanics, Vol. 22, No. 11, 1982, pp.401-406. doi:10.1007/BF02326820

[10]   A. S. Khan, and C. Hsiao, “On the Use of Electrical-Resistance Foil Strain Gages for Plas-tic-Wave Studies in Solid,” Experimental Mechanics, Vol. 28, No. 3, 1988, pp.254-259. doi:10.1007/BF02329020

[11]   A. S. Khan and Y. Parikh, “Large Deformation in Polycrystalline Copper under Combined Tension-Torsion Loading and Re-loading or Reverse Loading: A Study of Two Incremental Theories of Plasticity,” International Journal of Plasticity, Vol. 2, No. 4, 1996, pp.379-392. doi:10.1016/0749-6419(86)90025-2

[12]   S. Huang, A. S. Khan and H. Yan, “Shear Measurement Using Strain-Gauges under Large Deformation and Rotation,” Experimental Mechanics, Vol. 33, No. 1, 1993, pp. 55-58. doi:10.1007/BF02322551

[13]   M. Z. S. Khan, D. S. Saunders, N. J. Baldwin and D. H. Sanford, “An Investigation of the Use of Strain Gages to Measure Welding-Induced Residual Stresses,” Experimental Mechanics, Vol. 37, No. 3, 1997, pp. 264-271.doi:10.1007/BF02317417

[14]   Q. Hou et al., “Field Measurement of Dynamic Stress of Ocean Platform,” Coastal Engineering, Vol. 19, No. 1, 2000, pp. 20-26.

[15]   Y. J. Xu et al., “Numerical Analysis on the Mechanics Character-istic of Spot-Welding-Flake-Strain-Sensor,” IACTM 2008, Adelaide, Australia.

[16]   Y. J. Xu, “Experimental Study on Stress Transfer and Fatigue Performance of TIG Spot Welding Flake Strain Gauge,” Mechanics in Engineering, Vol. 30, No. 4, 2008, pp. 47-49.

[17]   Y. J. Xu et al., “Experimental Studies and numerical Analyses on Spot Welding Flake Strain Sen-sors,” China Measurement & Test, Vol. 35, No.1, 2009, pp.90-93.

[18]   Z. H. Shen, H. Li, Y. N. Xue et al., “The W-11-4A Platform Comprehensive Strength Monitoring Sys-tem,” China Ocean Engineering, Vol. 12, No. 2, 1998, pp. 135-146.

[19]   C. T. Liu and W. M. Wang, “Some Progress on safety Monitoring and Assessment Technique of Ocean Plat-form Structure, Modern Mechanics and Scientific-Technical Progress,” Celebration Conference of 40th Anniversary of the Founding of Chinese Society of Theoretical and Applied Me-chanics, Beijing, 1997, pp. 397-400.