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- Title
Effect of Pin Geometry on the Mechanical Strength of Friction-Stir-Welded Polypropylene Composite Plates.
- Authors
Kordestani, F.; Ashenai Ghasemi, F.; Arab, N.
- Abstract
Friction stir welding (FSW) is a solid-state welding process, which has successfully been applied in aerospace and automotive industries for joining materials. The friction stir tool is the key element in the FSW process. In this study, the effect of four different tool pin geometries on the mechanical properties of two types of polypropylene composite plates, with 30% glass and carbon fiber, respectively, were investigated. For this purpose, four pins of different geometry, namely, a threaded-tapered pin, square pin, four-flute threaded pin, and threaded-tapered pin with a chamfer were made and used to carry out the butt welding of 5-mm-thick plates. The standard tensile and Izod impact tests were performed to evaluate the tensile strength and impact toughness of welded specimens. The results indicated that the threaded-tapered pin with a chamfer produced welds with a better surface appearance and higher tensile and impact strengths. The tests also showed that, with the threaded-tapered pin with a chamfer, the impact strength of the glass- and carbon-fiber composite welds were about 40 and 50%, respectively, of that of the base materials.
- Subjects
COMPOSITE plates; FRICTION stir welding testing; WELDED joint testing; POLYPROPYLENE; TENSILE strength; IMPACT (Mechanics)
- Publication
Mechanics of Composite Materials, 2017, Vol 53, Issue 4, p525
- ISSN
0191-5665
- Publication type
Article
- DOI
10.1007/s11029-017-9682-8