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dc.contributor.advisor Sivahar, V
dc.contributor.advisor Munasinghe, RGNDS
dc.contributor.author Dayananda, HGSM
dc.date.accessioned 2019-01-23T22:59:58Z
dc.date.available 2019-01-23T22:59:58Z
dc.identifier.citation Dayananda, H.G.S.M. (2014). Correlation between corrosion rate and ultrasonic attenuation on steel [Master's theses, University of Moratuwa]. Institutional Repository University of Moratuwa. http://dl.lib.mrt.ac.lk/handle/123/13839
dc.identifier.uri http://dl.lib.mrt.ac.lk/handle/123/13839
dc.description.abstract Corrosion is the gradual destruction of material, usually metal, by chemical reaction with its environment. Usually the corrosion rate cannot be measured directly which needs sample preparation, fixing of samples in a particular environment, measuring the weight loss during a given period of time and measuring other parameters (time of wetness, SO2 & NO2 concentration, etc.). This research work was based on measuring the corrosion rate using ultrasound technique, which can be named as a nondestructive testing method. Ultrasound defined as the sound waves, which has a frequency more than 20 kHz. To investigate the behavior of corrosion in accelerated atmospheric conditions mild steel samples was exposed to the concentrated NaCl solution. The assessment mainly conducted by evaluating the loss of mass of specimens against the ultrasonic attenuation. Weight loss is the parameter of corrosion rate and it has a relationship with the surface roughness of the samples. The surface roughness of the samples have an influence on the ultrasonic attenuation. Therefore, corrosion rate has a relationship between ultrasonic attenuation. In this project, efforts were made to find a correlation between surface roughness and ultrasonic attenuation. An equation was derived to calculate the corrosion rate if the ultrasonic attenuation is measured. This method has the advantage of assessing the corrosion rate without sample preparation on a given component. en_US
dc.language.iso en en_US
dc.subject MSc (Major Component Research)
dc.subject MATERIALS SCIENCE AND ENGINEERING-Thesis
dc.subject MATERIALS SCIENCE-Thesis
dc.subject CORROSION RATE-Steel
dc.title Correlation between corrosion rate and ultrasonic attenuation on steel en_US
dc.type Thesis-Abstract en_US
dc.identifier.faculty Engineering en_US
dc.identifier.degree Master of Science in Materials Engineering en_US
dc.identifier.department Department of Materials Science Engineering en_US
dc.date.accept 2014-03
dc.identifier.accno TH3092 en_US


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