PERILAKU TARIK BAJA STRUKTURAL DENGAN VARIASI LAJU CROSSHEAD
Abstract: The objective this
research is to investigate the effect of crosshead speed on the tensile behavior of
the structural steel
which is presented
in stress-strain diagram.
The experiments were carried out
by performing tensile testing of specimens with various crosshead speeds. The crosshead
speed was determined by a dial position of 0.2, 0.5, 1, and 2 on the testing
machine. In load-free condition, the dial positions give true speed of the
crosshead of 0.042 mm/s, 0.27 mm/s,
0.663 mm/s, and
1.354 mm/s respectively.
The material used
in this research
is a structural steel
which is comparable
to the standard
of DIN ST37.
The result shows
that the various crosshead speeds
give a different response of the strain rate during the test. The strain rate,
whic is resembled by the crosshead speed, begins to increase at the yield
point. Also, the ultimate stress of the specimens is affected by the crosshead
speed. The ultimate stress of the specimens with dial position of 2 increases
approximately 25% from that of with dial position of 0.2.
Penulis: Anggit Murdani
Kode Jurnal: jptmesindd100161
