THE INCREASING OF WELD STRENGTH BY （焊接强度的增加）.pdf

23. - 25. 10. 2012, Brno, Czech Republic, EU THE INCREASING OF WELD STRENGTH BY PARAMETERS OPTIMIZATION OF ULTRASONIC WELDING FOR COMPOSITE MATERIAL BASED ON ALUMINIUM USING DESIGN OF EXPERIMENTS. Marius Pop-Calimanu, Traian Fleser “Politehnica” University of Timisora, Faculty of Mechanics, Bv. Mihai Viteazu no. 1, calimanumarius@ Abstract Ultrasonic welding is a solid-state welding process in which similar or dissimilar work pieces are jointed by the application of high frequency vibratory energy, where the work pieces are held together under pressure without melting. The problem faced by researchers and industry which have deals with ultrasonic welding process is poor strength of the weld, due to improper selection of welding parameters. Therefore , we are usually interested to determine which variables process affects the response. A stage is to optimize, this means that we can determine the region in the important factors that lead to the best possible response. In this paper, welding parameters , like welding time, welding pressure and amplitude of the vibration are taken into account during the realization of ultrasonic welded joints of Al/20%SiC composite material under disks form , whose thickness are 1 mm. This work focuses on the development of an effective methodology to determine the optimum conditions for welding, that maximize the strength of joints produced by ultrasonic welding. Here we have investigated the effect of process variables and energy input on joints formation between Al/20%SiC composite material disks, and a report on the optimum welding conditions. A suitable