Influence of Welding Parameters on Strength of Friction Stir Spot Welded Polyethylene Sheets Using Two-Stage Refilling Process

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 454

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شناسه ملی سند علمی:

ICME15_014

تاریخ نمایه سازی: 3 اردیبهشت 1398

چکیده مقاله:

There are different joining processes for thermoplastic composites. Friction stir spot welding by using two-stage refilling process has been introduced recently. In this paper, the feasibility of performing this process on polyethylene sheets is studied. Also, the effects of the main weldingparameters including the tool rotational speed and the refilling time on the welding strength were investigated using the response surface method (RSM). The results confirm that this process is applicable on polymer sheets. It is concluded that the tool rotational speed is the mostinfluential parameter, then followed by refilling time. The results also indicate that the increase of the tool rotational speed results in the reduction of the joint strength, and the decrease of the refilling time increases the welding strength. The best obtained strength proposed by theresponse surface optimizer was 798 MPa, which was obtained with tool rotational speed of 1200 rpm and refilling time of 19.82 s.

کلیدواژه ها:

Friction stir spot welding- Polyethylene sheet- Two-stage refilling – Welding strength.

نویسندگان

Farshad Akbari

MSc. Student, Mechanical engineering department, University of Birjand, Birjand, Iran

Moosa Sajed

PhD Student, Mechanical engineering department, University of Birjand, Birjand, Iran

Amir Ashrafi

Assistant Prof., Mechanical Engineering Dept., University of Birjand, Birjand, Iran

S. M. Hossein Seyedkashi

Associate Prof., Mechanical Engineering Dept., University of Birjand, Birjand, Iran