Effect of tool geometry on friction stir spot welding of polypropylene sheets

Bilici M. K.

EXPRESS POLYMER LETTERS, cilt.6, sa.10, ss.805-813, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 6 Sayı: 10
  • Basım Tarihi: 2012
  • Doi Numarası: 10.3144/expresspolymlett.2012.86
  • Dergi Adı: EXPRESS POLYMER LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.805-813
  • Anahtar Kelimeler: processing technologies, industrial applications, mechanical properties, polymer welding, friction stir spot welding, STATIC STRENGTH, MECHANICAL-PROPERTIES, THREAD ORIENTATION, PIN PROFILE, PARAMETERS, DEGRADATION, RESISTANCE, ZONE
  • Marmara Üniversitesi Adresli: Evet

Özet

The effects of tool geometry and properties on friction stir spot welding properties of polypropylene sheets were studied. Four different tool pin geometries, with varying pin angles, pin lengths, shoulder diameters and shoulder angles were used for friction stir spot welding. All the welding operations were done at the room temperature. Lap-shear tensile tests were carried out to find the weld static strength. Weld cross section appearance observations were also done. From the experiments the effect of tool geometry on friction stir spot weld formation and weld strength were determined. The optimum tool geometry for 4 mm thick polypropylene sheets were determined. The tapered cylindrical pin gave the biggest and the straight cylindrical pin gave the lowest lap-shear fracture load.