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Marine System Engineering, Master's Course
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Marine Mechanical Engineering
Applied Mechanics and Tribology Laboratory Industrial Materials Laboratory Energy Conversion Laboratory Mechanical Design Laboratory Systems Applied Physics Laboratory
Industrial Materials Laboratory
Research laboratory: Industrial Materials Laboratory
Program outline: High airborne salinity shows the severe corrosivity for the buildings or structures placed on the seashore areas. The surface of metals are suffered terrible damage from attached sea salt particles, so it is important to estimate the material life by using the method of LCA(Life Cost Management) to prevent the damages. For the purpose of this the atmospheric corrosion monitoring sensor had been developed. In this research laboratory students use monitoring sensors to conduct environmental-factor impact assessments of corrosion in metallic materials located on the seashore environments, and participate in developing anticorrosive technologies that help to extend the life time of structures. Recently, our laboratory also has started studies into harnessing and extracting the natural energy present in the electrochemical reactions that constitute the phenomenon of corrosion.
Research topics:
(a)  Investigating environmental corrosivity using an atmospheric corrosion monitoring sensor
Outline:

Atmospheric corrosion refers to the corrosion caused by water film forming on metal surfaces in the atmosphere. This type of corrosion is quantitatively evaluated using an ACM (Atmospheric Corrosion Monitor) type corrosion sensor that was developed in the Industrial Materials Laboratory.
(b)  Development and applicability of Zn or Al substrate for ACM type corrosion sensor
Outline: The ACM (Atmospheric Corrosion Monitor) type corrosion sensor is made of Fe substrate. This research topic investigates Zinc or Aluminum substrates with the aim of extending sensor life, and examines their applicability for this purpose.
(c)  Research and development into downsizing the ACM type corrosion sensor
Outline: The 60 mm 60 mm 0.8 mm t size coupon of the ACM (Atmospheric Corrosion Monitor) type corrosion sensor facilitates installation onto only flat areas. Further downsizing is required for placement inside equipment or in other locations. Technical development for higher sensitivity and processing precision is necessary for reducing sensor size.
(d)  Developing a method to accelerate the atmospheric corrosion test using an air-brush spray system
Outline: As part of developments for a accelerated test method of atmospheric corrosion is produced in the laboratory, and a device for improving the quantities of amount of deposited sea salt by means of an air-brush is being developed (patent application underway). This research topic aims for further refinement of the testing method, and for compatibility and practical application of the method to JIS (Japanese Industrial Standard) recommended test specimens.
(e)  Research on detecting initiation of localized corrosion for stainless steels
Outline:

Students in this research topic make observations from live-camera image and weather-monitoring data to investigate the rusting conditions of stainless steels on marine atmospheric environment.
(f)  Research on the embrittlement of metallic materials in sea water
Outline: This topic researches the impact of various dynamic and environmental factors that affect the corrosion fatigue crack propagation behavior of steel in natural seawater.
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Applied Mechanics and Tribology Laboratory Industrial Materials Laboratory Energy Conversion Laboratory Mechanical Design Laboratory Systems Applied Physics Laboratory
Ocean Environmental TechnologyPower System EngineeringMarine Mechanical EngineeringMarine CyberneticsMarine Exploring and Utilization
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