ANALISIS STATIK
RETAK TIGA DIMENSI PADA PELAT ALUMINIUM
Adi Febrianton
Program Studi Perawatan dan Perbaikan Mesin,
Politeknik Kampar
Email : adifebrianton@gmail.com
ABSTRACT
One important
aspect which affects the fracture mechanism is the assessment of crack
propagation in three-dimensional geometry. Aluminum is a type of material that
is pretty much application in structures, such as automotive components, fuselage,
and transport equipment and military, etc. The purpose of this study was: (1) Determine the crack propagation
three-dimensional experiments on aluminum are subjected to static load;
(2)Knowing the crack propagation and Distribution of voltage to the aluminum
through a numerical approach; and (3) to analyze the three-dimensional crack
propagation through experimentation. Processing of data related to the study was
the change in response to changes in load length of the aluminum specimen for
testing three-dimensional rift. Static flexural response was the influence of
the load against deflection of the aluminum rod. Initial crack length was varied:
3 mm, 5 mm and 7 mm. The investigation was also conducted on the location of
crack initiation, crack propagation angle, crack propagation pattern. The
conclusion of this study include: (1) three-dimensional crack propagation on
aluminum plates have known, based on the results of testing the angle
parameters for static tensile load parameters and parameter ellipse angle
aluminum plate subjected to tensile load is higher than bending loads.
Parameters angle increases due to the length of the notch early. Ellipse
parameters aluminum plates were subjected to a bending load higher than the
aluminum plates were subjected to static tensile load. (2)Three dimensional
static crack propagation against the aluminum plate was investigated by static
tensile and bending. The maximum tensile load capable detained by aluminum
plates was reduced if the length of the initial notch enlarged. However, the
maximum bending loads capable detained by aluminum plates were increased if the
initial notch length increased. Aluminum plates with cracks having a
three-dimensional static tensile load response higher than the bending loads;
(3) the direction of propagation was mainly influenced by the stress
distribution around the notch. Voltage which cause crack propagation due to the
bending load was lower than the tensile load.
Keywords:
three-dimensional crack, crack initiation, voltage.
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