Materials Performance

AUG 2018

Materials Performance is the world's most widely circulated magazine dedicated to corrosion prevention and control. MP provides information about the latest corrosion control technologies and practical applications for every industry and environment.

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62 AUGUST 2018 W W W.MATERIALSPERFORMANCE.COM TABLE 3. RATINGS FOR RMSE AND MAPE VALUES RMSE Values MAPE Values <0.01 = Excellent <10 = Highly accurate 0.01~0.02 = Good 10~20 = Good 0.02~0.05 = Fair 20~50 = Reasonable 0.05~0.10 = Regular >50 = Not accurate 0.10~0.20 = Bad >0.20 = Failed coastal and rural zones. After 24 months, the corrosion rates of all CS samples in the industrial zon e were approaching 200 μm/y. Additionally, the ANN and PCA-ANN models demonstrated good forecasting capabilities in the industrial atmospheric zone. For the rural atmospheric zone, the MLR -ANN and P C A-ANN model s both demonstrated suitable forecasting capa- bilities. For the coastal atmospheric zone, the forecasting capabilities of all three models were unsuitable. References 1 E.D. Kenny, et al., "Artificial Neural Network Corrosion Modeling for Metals in an Equato- rial Climate," Corros. Sci. 51 (2009): pp. 2,266- 2,278. 2 Z. Janˇcíková, et al., "Prediction of Steel Atmo- spheric Corrosion by Means of Artificial In- telligence Methods," Metal. 18-20 (2011): pp. 1,201-1,205. 3 Y.C. Yei, Applied Artificial Neural Network (Taiwan, Republic of China: Scholars Books, 2004). 4 M.L. Wu, SPSS Statistical Application Practice (Taiwan, Republic of China: Scholars Books, 2000). 5 D.A. Jones, Principles and Prevention of Cor- rosion (Paramus, NJ: Prentice Hall, 1996). C.M. LO is an associate researcher at the Harbor & Marine Technology Center, Insti- tute of Transportation, Ministry of Trans- portation and Communications, Taiwan, Republic of China, email: appleloe@gmail. com. He majored in the atmospheric corro- sion field and has published more than 20 papers on metal atmospheric corrosion. Currently, he is a Ph.D. candidate at Chung Hsing University in Taiwan. He became a NACE member in 2017. L.H. TSAI is a senior researcher at the Har- bor & Marine Technology Center, Institute of Transportation, Ministry of Transporta- tion and Communications, email: ali@mail. ihmt.gov.tw. He majored in the harbor and marine field and has published more than 100 papers. H.H. LAI is a postdoctoral researcher with the Department of Materials Science and Engineering, National Chung Hsing Uni- versity, Taiwan, Republic of China, email: jack210810@hotmail.com. His areas of study are characteristics and mechanisms of simultaneous vibration in welding. He has published more than 10 papers. W.T. WU is a professor with the Depart- ment of Materials Science and Engineer- ing, National Chung Hsing University, email: weite@dragon.nchu.edu.tw. He holds a Ph.D. in mechanical engineering and metallurgy from University of Illinois at Chicago, and his fields of interest are nanocomposite materials, welding, surface treatment, tribology, and residual stress relief. He has published more than 70 papers. M.D. LIN is a professor at the Department of Environmental Engineering, National Chung Hsing University, email: MDLin@ nchu.edu.tw. He has a Ph.D. in civil engi- neering from University of Texas at Austin and studied the field of environmental sys- tem analysis. He has published more than 70 papers. CM CORROSION MANAGEMENT We have high standards, shouldn't you? NACE standards are responsive to changing technology, effi cient, and give your company or career a competitive edge. • Purchase products that perform • Streamline processes and avoid errors • Trim costs and boost your bottom line • Comply with company and government regulations Learn how your company can benefi t from NACE standards today. For information, visit www. nace.org/ standards

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