S Salimi - Ph.D. Student, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
M Haghpanahi - Associate Professor, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
P Bahemmat - Ph.D., School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran,

The ever-increasing complexity of modern high- performance components, weight and space limitations, andmaterial savings in different industries have emphasized the necessity for more efficient heat dissipation compact parts.In this respect and due to world competition to achieve higher reliability and lower cost, design and manufacture ofminiaturized cooling channels have been faced many challenges. One of the most innovative methods of mini and microchannels fabrication is based on Friction Stir Processing (FSP) which enables possibility of economical manufacturingof continuous and non-linear channels, without any requirement to access the part cross sections and also with noimpact on part functionality. Friction Stir Channeling (FSC) is a modern method inspired by FSP that takes uniqueinherent advantages of cold plastic fabrication. FSC is created based of one of FSP common flow defects namedwormhole defect, which accentuates the requirement of experimental investigation design, considering the materialflow concepts. In the current research, three novel FSC tool designs have been proposed as the main affectingparameter of test strategy, theory behind each tool schematic has been described and the best design is highlightedexploring the hydraulic diameter and corresponding friction coefficient as a representation of channels flow resistance.

Miniaturized Channel, Friction Stir Channeling, Hydraulic diameter, Friction Coefficient, Flow Resistance