Abstract

Ultrasonic welding of thermoplastic composites has become an important process in industry because of its relatively low cost and high quality resultant joints. However, the optimization of this technique has been essentially based on a trial-and-error process. In this report, an L18 orthogonal array design based on the Taguchi method was conducted to optimize the joint strength of ultrasonically welded thermoplastic composites. The materials used were 15 and 35% glass-fiber filled nylon-6 composites. Specimens for ultrasonic welding were welded on a 2000-watt welder and their joint strengths were determined by a tensile tester. The experimental result suggests that the amplitude of vibration, hold time and geometry of the energy directorsare the principal factorsaffecting the joint property of ultrasonically welded nylon composites. Semicircular energy directors were found to weld products of the highest strength. In addition, the joint strength of the parts increases with the fiber content in the composites, but decreases with the moisture of the materials.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call