Premium
Vibration welding of thermoplastics. Part II: Analysis of the welding process
Author(s) -
Stokes V. K.
Publication year - 1988
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760281105
Subject(s) - materials science , welding , flow (mathematics) , mechanics , vibration , amplitude , heat flow , heat affected zone , composite material , material flow , steady state (chemistry) , friction welding , metallurgy , acoustics , thermodynamics , optics , thermal , physics , ecology , chemistry , biology
The vibration welding process for thermoplastics is known to consist of four phases: (1) initial heating of the interface to the melting temperature by Coulomb friction; (2) unsteady melting and flow in the lateral direction; (3) steady‐state flow; and (4) unsteady flow and solidification of the film after the vibratory motion is stopped. Simple analytical models are developed for the first three phases. These models are used for estimating the molten film thickness, the size of the heat affected zone, and the weld time as functions of the weld parameters: the amplitude and frequency of the weld motion, and the weld pressure. The steady‐state film thickness and the heat‐affected zone are shown to be very small.