Methodology of threat autonomous assessment and forecasting the lifetime of the marine structure

• Autorzy: Murawski L.

Identyfikatory

DOI

10.5604/12314005.1165673

• Języki publikacji: EN

Abstrakty

EN

Structural Health Monitoring (SHM) is a natural extension and supplement of Non-Distractive Tests (NDT). Structure assessment during periodical NDT tests is performed by highly trained human team. However, during long sea voyage, ship crew has no knowledge and possibility for detailed assessment and, what is more, has no knowledge lifetime predicting of ship structure. SHM systems should have good designed sensors types, distribution, and automatic recording unit. However, most important (and most difficult for designing) is autonomous and self-contained procedures for marine structures hazard assessment. In the paper, basic assumptions for numerical algorithms of signal processing, damage identification and localization, threat assessment and forecasting of structure lifetime are presented. SHM systems can be based on several different measurements techniques like: comparative vacuum monitoring, electromagnetic layer, Lamb waves, vibration based methods, acoustic emission, and fibre optics. Last three methods are most promising in the marine environment, according to the author experience. Global ship hull deformation should be monitored as quasi-continuous measurements. Optical Time-Domain Reflectometer method (OTDR) is planned by author for hull global deformation monitoring. Some local strain-stress concentration of hull structure and propulsion system bearings' reactions will be monitored by Fibre Bragg Grating (FBG) sensors. Both techniques (OTDR and FBG) have been shortly described in the paper.

Słowa kluczowe

EN

monitoring systems; non-destructive tests; ship structures lifetime prediction; damage identification; damage localization; lifetime forecasting

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2015
• Tom: Vol. 22, No. 2
• Strony: 163--168
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Murawski L.

• Gdynia Maritime University Faculty of Marine Engineering Morska Street 81/87, 81-225 Gdynia, Poland tel.: [phone]

Bibliografia

• [1] Glisic, B., Inaudi, D., Fibber Optic Methods for Structural Health Monitoring, John Wiley & Sons, Hoboken, West Suessex 2007.
• [2] Krawczuk, M., Kudela, P., Majewska, K, Malinowski, P., Murawski, L., Opoka, S., Ostachowicz, W., Radzieński, M., Wandowski, T., Żak, A., Monitorowanie stanu technicznego konstrukcji i ocena jej żywotności, Wydawnictwo Nauk. Instytutu Technologii Eksploatacji – PIB, pp. 196, Gdansk 2012.
• [3] Li, H. N., Li, D. S., Song, G. B., Recent applications of fibre optic sensors to health monitoring in civil engineering, Engineering Structures, Vol. 26, pp. 1647-1657, 2004.
• [4] Murawski, L., Ostachowicz, W., Opoka, S., Mieloszyk, M, Majewska, K., Practical applica-tion of monitoring system based on optical sensors for marine constructions, Key Engineering Materials, Vol. 518, pp. 261-270, 2012.
• [5] Opoka, S., Murawski, L., Wandowski, T., Malinowski, P., Ostachowicz, W., Damage detec-tion experiment on offshore platform leg model with usage of fibre optic technique based on FBG sensors, Proc. 8th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies, Cardiff, UK 2011.
• [6] Sante, R. D., Donati, L., Troiani, E., Proli, P., Reliability and accuracy of embedded fibre bragg grating sensors for strain monitoring in advanced composite structures, Metals and Materials International, Vol. 20, No. 3, pp. 537-543, 2014.
• [7] Stephens, R. I., Fatemi, A., Stephens, R. R., Fuchs, H. O., Metal Fatigue in Engineering, John Wiley & Sons, 2001.
• [8] HES background to new fatigue guidance for steel joints and connections in offshore structu-res, Offshore Technology Report OTH 92 390, United Kingdom Health and Safety Executive, 1999.