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This is to certify that your paper entitled «Fuzzy Logic to predict the Hardness of Melted Zone in the Submerged Arc Welding of Steel Plate Using TiO2 Nano Particle» was indexed with 8 pages, in the CIVILICA citation database, code COI:INCWI13_067, after evaluation and approval of the referees of the "Thirteenth National Conference welding and Inspection and Second National Conference on NDT held in Kerman 2012.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above conference and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.