چکیده مقاله
This paper presents the preliminary results of ultrasonic welding of epoxy based thermosets by thermoplastic interlayers The main objective is to understand the possible mechanisms of interfacial adhesion and also to explore feasible approaches such as application of pretreatment processes as cost effective manufacturing techniques Therefore, sulfuric acid H2SO4 solution is employed as an etchant to remove outer epoxy layers and pretreat chemically the surface of thermoset composite for subsequent welding process The polyvinyl chloride PVC and polymethylmethacrylate PMMA are used between two thermoset composites as interlayers to bond the thermoset composites by using the ultrasonic welding with a frequency of 15 KHz directed to the workpieces through predesigned mechanical horn Finally, for the case of PVC interlayer, application of 2 bar pressure, 1 2 s welding time and 3 s holding time selected as welding parameters, the maximum tensile stress is determined to be about 76 9 MPa In contrast, for the case of PMMA interlayer, 2 bar pressure, 2 s welding time and 3 s holding time as welding parameters, the minimum tensile stress is about 14 8 MPa So, experimental investigations reveal that ultrasonic welding can be effectively applied in industrial aspects
کلیدواژهها
نویسندگان
Soheil Mirzaahmadi
Ph D Candidate of Mechanical Engineering, Department of Mechanical Engineering, University of Tarbiat Modares, Tehran, Iran
Davood Akbari
Assistant Professor, Department of Mechanical Engineering, University of Tarbiat Modares, Tehran, Iran
Iraj Ahadzadeh
Assistant Professor, Department of Physical Chemistry, University of Tabriz, Tabriz, Iran
Hamed Tirband
M Eng Candidate of Mechanical Engineering, Department of Mechanical Engineering, University of Tarbiat Modares, Tehran, Iran
شیوه ارجاع
Mirzaahmadi, Soheil and Akbari, Davood and Ahadzadeh, Iraj and Tirband, Hamed,1398,Study of Ultrasonic Welding of Glass Fiber Reinforced Thermosetting Epoxy-based Polymers,International Conference on Manufacturing Engineering,Tehran
ارائهشده در
مجموعه مقالات شانزدهمین همایش ملی و پنجمین کنفرانس بین المللی مهندسی ساخت و تولید27 آذر 1398 · تهران