Bulging Test of Aluminium at room temperature
Dash, Vaibhav (2010) Bulging Test of Aluminium at room temperature. BTech thesis. PDF 4Mb Abstract During Compression Testing, a solid specimen (Hexagonal in Cross-Section) is compressed axially between the punch and the bottom plates. As a result of this, the work piece material undergoes deformation which basically is Bulging at its centre position. This test can further be carried out at different temperatures to record the nature of compression for different ranges of temperatures. In Compression or Upsetting, the presence of frictional constraints between the dies and the work piece directly affects the plastic deformation of the work piece. The friction at the faces of contact retards the plastic flow of metals around the surface and in its vicinity. A conical wedge of a relatively undeformed metal is formed directly below it while the rest of the cylindrical metal suffers high strain hardening and subsequently bulges out. However, in practice, the use of lubricants greatly
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