Effect of welding parameters on the heat affected zone and the mechanical properties of friction stir welded poly(ethylene-terephthalate-glycol)

The bond strength and the heat affected zone (HAZ) of friction stir welded seams made of poly(ethylene‐terephthalate‐glycol) are analyzed in the article. The seams were prepared with various settings (rotation speed and feeding rate) and with various welding tools. Using the welding parameters (rota...

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Bibliographic Details
Published in:Journal of applied polymer science 2012-08, Vol.125 (3), p.2231-2238
Main Authors: Kiss, Z., Czigány, T.
Format: Article
Language:English
Subjects:
Applied sciences
Bonding and welding
Exact sciences and technology
Feeding
Friction stir welding
Heat affected zone
imaging
Machinery and processing
Materials science
Mechanical properties
Optical properties
Plastics
Polymer industry, paints, wood
Polymers
Seams
stress
Technology of polymers
thermoplastics
Welding
Welding parameters
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Summary:The bond strength and the heat affected zone (HAZ) of friction stir welded seams made of poly(ethylene‐terephthalate‐glycol) are analyzed in the article. The seams were prepared with various settings (rotation speed and feeding rate) and with various welding tools. Using the welding parameters (rotation speed, the feed rate, and the tool diameter) a K‐factor characterizing the welding process was defined. The novel K factor is related to the welding heat input, which is in direct correlation with both the range of the HAZ and the mechanical properties of the seam. The HAZ formed was analyzed by stress optical method, the mechanical properties by flexural test. It has been demonstrated that the efficiency factor of the welded joint is closely related to the width of the HAZ and it depends on the welding parameters and the tools. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
ISSN:0021-8995
1097-4628
DOI:10.1002/app.36440