Temperature measurements during friction stir welding

• The increasing industrial demand for lighter, more complex and multi-material components supports the devel-opment of novel joining processes with increased automationand process control. Friction stir welding (FSW) is such aprocess and has seen a fast development in several industries. This welding technique gives the opportunity of automationand online feedback control, allowing automatic adaptation to environmental and geometrical variations of the component. Weld temperature is related to the weld quality and therefore proposed to be used for feedback control. For this purpose, accurate temperature measurements are required. This paper presents an overview of temperature measurement methods applied to the FSW process. Three methods were evaluated in this work: thermocouples embedded in the tool, thermocouples embedded in the workpiece and the tool-workpiece thermocouple (TWT) method. The results show that TWT is anaccurate and fast method suitable for feedback control of FSW.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)

Nyckelord

friction stir welding

fsw

robotic

temperature measurement

TWT

process control

aluminium

thermocouples

temperature

Maskinteknik

Mechanical Engineering

Manufacturing and materials engineering

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)