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Keywords: deterioration
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Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-451
... on Deterioration of Thermoplastic GFRP Bars in Simulated Marine Environments Yuan Zhang1, Dingming Zhang1, Zhiyong Wang2, Wenwu Hu2, Yanbo Liu1* 1.College of Shipbuilding Engineering, Harbin Engineering University, Harbin, China 2.Jiangsu Hengrui Aviation Industry Co, Ltd, Changshu, China ABSTRACT Corrosion...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-590
... ABSTRACT A statistical method to separate the components of aging deterioration in a ship's shaft power from onboard monitoring data of a ship in service is proposed. The "component" here refers to the power in calm water, the increased power due to the encountered wind, and the increased...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-409
... Facilities" (hereinafter referred to as "the guidelines") were partially changed in March 2020. The guidelines clearly stipulate that when changes of the state of port facilities can be identified and the degree of deterioration determined by visual inspection or equivalent methods, the use of new...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-226
.... In addition, a number of numerical studies were conducted to investigate calculation accuracy by truncation and the effect of signal transfer delay. These studies showed that the delay and deterioration of calculation accuracy by truncation cause fatal differences on the top tension amplitude when oscillated...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-457
..., and the possibility of understanding the spatial distribution of abnormal data is suggested. INTRODUCTION Port and harbor facilities are subjected to severe natural environments so their performance often deteriorates, even during their service period (Kobayashi and Ueda, 2003). With the amendment of the Port...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-089
... fpso management system characteristic data evaluation gas monetization petronas maintenance program lng hazard liquified natural gas subsea system integrity compliance system category deterioration assessment A Structural Integrity Management System for a Floating LNG Structure Riaz...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-055
... motion and the successive tsunami. maximum value liquefaction loose sandy ground equation inundation depth upstream oil & gas water pressure effective stress earthquake tsunami sandy ground deterioration liquefaction analysis ground motion compressibility numerical analysis...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-541
... tidal stream power unit in a wind tunnel. Huang, et al (2015) employed a multi-objective numerical method coupled with a response surface method and genetic algorithm to optimize the pitch angle of the front blade of a counter-rotating type tidal stream power unit. propeller deterioration...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-199
... ABSTRACT Currently, the life time of rubber marine fender (hereafter "fender") has been evaluated by the external damage but many of large size fenders are not visually deteriorated even after over 30 years of use. But, there is a concern that material and performance maybe changed even though...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-341
.... Press bending or roll bending are commonly applied to produce pipe products, and these bending process deteriorates the mechanical properties of steel. In particular, the deterioration of toughness has a significant influence on the integrity of structures, and in order to overcome this problem, demand...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-827
... Abstract Onboard investigations for VLCC and LNG carrier were carried out to clarify the deterioration mechanism of coated steel in a water ballast tank (WBT). The degree of deterioration of the coated steel in each area of the WBT was quantified by the assessment scale of the IACS. Analysis...
Proceedings Papers

Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-532
... will loose strength. Proposals for strong grout packers are presented. upstream oil & gas deterioration grouted connection landing ring layout monopile femodel platform design niels-erik ottesen hansen deformation subsea system strength grout packer recommendation steel grout...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-636
...Internal Deterioration in Concrete Lined Open Channels Due to Frost Damage Masashi Suto1, Hidehiko Ogata1, Kunio Hattori1, Ryuichi Takata2, Panganayi Cleopatra1 1Water Supply Facilities Laboratory, Tottori University Tottori, Tottori, Japan 2Civil and Environmental Engineering, Matsue College...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-528
... ABSTRACT Offshore platforms exposed to aggressive service and environmental effects would cause their strength and stiffness to deteriorate over an extended period of service. In ice zones, the ice load is the dominant environmental load and may imperil the safety of ageing platforms severely...
Proceedings Papers

Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-076
... replacement of fine aggregate with bamboo charcoal has encouraging effects on the prevention of material deterioration of concrete in marine environments in terms of the improvement of impermeability and chloride blocking. KEY WORDS: bamboo charcoal; cement mortar; marine concrete; concrete deterioration...
Proceedings Papers

Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-310
...%). calculation moorage bearing capacity vladivostok inspection corrosion velocity probability hydrotex ltd life time reliability nakhodka durability evaluation degradation port construction underwater zone thickness deterioration corrosion Durability Evaluation of Marine and Offshore...
Proceedings Papers

Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-522
... on the dynamic response evaluation of the idealized offshore platform model with offshore wind energy production are examined with wave force and seismic force in the present study. The deterioration effects of the structure on the response evaluation are also discussed with the simplified model. Furthermore...
Proceedings Papers

Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-215
... corrosion effects, many reinforced concrete structures exposed to aggressive environments (e.g. marine environment, chemical environment, etc.) have shown early deterioration including sudden failures. This indicates that corrosion will result in the degradation of the ductility of the RC member...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-282
... convection calculation erosion canadian ice service iceberg deterioration savage wave period iceberg forecasting model iceberg mass iceberg water temperature salinity mechanism modeling deterioration process fracture wave height waterline length water current deterioration...

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