Pengaruh Bentuk Takikan (Notched) Pada Poros Baja Karbon ST. 60 Akibat Beban Tarik
Abstract: Shaft failure often
occurs due to stress fluctuations, although the maximum stress that occurs is
still smaller than the static strength of the shaft material. The carbon steel
St.60 shaft failure occurred at points where there is stress concentration, where
the sources of stress concentration on machine elements, may be notches,
grooves, holes, screw, peg and others. Answering the above problems, required
an analysis of the material on the shaft of carbon steel St.60. St.60 shaft
made of carbon steel test specimens are given a form Unotch radius of 4 mm and
8 mm and V-notch 600 against the load tensile stress concentration effect.
Failure phenomenon that occurs will show the material properties of fracture
observations. Preparation of test specimens according to ASTM A370 standards.
Tensile testing is done by Tension Testing Machine and the observation of
fracture due to tensile load carried at the macro level on the fault section.
Of this study was obtained tensile test results on the test specimen without a
notch max average of 775.65 MPa. With the form of the
notch it will affect tensile strength of the material to applicable for the
stress concentration on the trunk. Of the three forms of the notch is varied
then the form of an angled notch better able to withstand tensile loads
occurring. Tensile stress specimens obtained for notched-V 600 548.17 MPa with
a Kt of 1.28. Stress concentrations that occur as a result of the notch shape
of the shaft failure resulted in the concentration of carbon steel St. 60. From
observations of fracture cross-sectional shape that happened was a broken clay
in which the cross-sectional area reduction locally or necking.
Penulis: Nurdin Hendri,
Mulianti
Kode Jurnal: jptmesindd110153
