Staff View: The weibull time-dependent growth model of marine corrosion in seawater ballast tank

The weibull time-dependent growth model of marine corrosion in seawater ballast tank

This paper demonstrates the application of the probability distributions in modeling the time dependent growth behaviour of corrosion pits in vessel's seawater ballast tanks. The proposed model is capable of projecting the likely growth pattern of corrosion pits in the future by eliminating the...

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Main Authors:	Md. Noor, Norhazilan, Smith, George H., Yahaya, Nordin
Format:	Conference or Workshop Item
Published:	2007
Subjects:	T Technology (General) TA Engineering (General). Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/22009/
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id	my.utm.22009
record_format	eprints
spelling	my.utm.220092017-08-07T06:27:15Z http://eprints.utm.my/id/eprint/22009/ The weibull time-dependent growth model of marine corrosion in seawater ballast tank Md. Noor, Norhazilan Smith, George H. Yahaya, Nordin T Technology (General) TA Engineering (General). Civil engineering (General) This paper demonstrates the application of the probability distributions in modeling the time dependent growth behaviour of corrosion pits in vessel's seawater ballast tanks. The proposed model is capable of projecting the likely growth pattern of corrosion pits in the future by eliminating the dependent factors governing to corrosion rate such as environmental factors, properties of material and operational condition. To express appropriately the high variability of corrosion wastage which contributes to the uncertainties in corrosion assessment, the Weibull probability distributions were proposed which are able to predict the growth of corrosion pit in seawater ballast tank. It is obvious that the provided information from the vessel inspections is full of uncertainties, owing to the nature of marine corrosion as reflected by the poor correlation result of averaged depth against time. In spite of the drawback, the research is able to demonstrate the optimisation of the data purposely for corrosion growth prediction. The predicted data as compared to actual data yields results with moderate accuracy based on Root-Mean-Square-Error (RMSE), yet still promising provided that better quality data can become available in the future. The proposed probabilistic models are intended to simplify the modelling process so that the available data can be fully utilised for prediction and structural evaluation purposes. 2007 Conference or Workshop Item PeerReviewed Md. Noor, Norhazilan and Smith, George H. and Yahaya, Nordin (2007) The weibull time-dependent growth model of marine corrosion in seawater ballast tank. In: Prosiding Kebangsaan Awam'07, 29th - 31st May 2007, Langkawi, Malaysia.
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	T Technology (General) TA Engineering (General). Civil engineering (General)
spellingShingle	T Technology (General) TA Engineering (General). Civil engineering (General) Md. Noor, Norhazilan Smith, George H. Yahaya, Nordin The weibull time-dependent growth model of marine corrosion in seawater ballast tank
description	This paper demonstrates the application of the probability distributions in modeling the time dependent growth behaviour of corrosion pits in vessel's seawater ballast tanks. The proposed model is capable of projecting the likely growth pattern of corrosion pits in the future by eliminating the dependent factors governing to corrosion rate such as environmental factors, properties of material and operational condition. To express appropriately the high variability of corrosion wastage which contributes to the uncertainties in corrosion assessment, the Weibull probability distributions were proposed which are able to predict the growth of corrosion pit in seawater ballast tank. It is obvious that the provided information from the vessel inspections is full of uncertainties, owing to the nature of marine corrosion as reflected by the poor correlation result of averaged depth against time. In spite of the drawback, the research is able to demonstrate the optimisation of the data purposely for corrosion growth prediction. The predicted data as compared to actual data yields results with moderate accuracy based on Root-Mean-Square-Error (RMSE), yet still promising provided that better quality data can become available in the future. The proposed probabilistic models are intended to simplify the modelling process so that the available data can be fully utilised for prediction and structural evaluation purposes.
format	Conference or Workshop Item
author	Md. Noor, Norhazilan Smith, George H. Yahaya, Nordin
author_facet	Md. Noor, Norhazilan Smith, George H. Yahaya, Nordin
author_sort	Md. Noor, Norhazilan
title	The weibull time-dependent growth model of marine corrosion in seawater ballast tank
title_short	The weibull time-dependent growth model of marine corrosion in seawater ballast tank
title_full	The weibull time-dependent growth model of marine corrosion in seawater ballast tank
title_fullStr	The weibull time-dependent growth model of marine corrosion in seawater ballast tank
title_full_unstemmed	The weibull time-dependent growth model of marine corrosion in seawater ballast tank
title_sort	weibull time-dependent growth model of marine corrosion in seawater ballast tank
publishDate	2007
url	http://eprints.utm.my/id/eprint/22009/
_version_	1643647347062734848
score	13.211869

The weibull time-dependent growth model of marine corrosion in seawater ballast tank

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