PENGUKURAN ENERGI IMPAK HELMET SEPEDA MOTOR AKIBAT BEBAN IMPAK JATUH BEBAS DENGAN ANVIL PLAT DATAR
Abstract: The traffic
accident doesn’t involved
by the velocity
but also gravitational. Therefore,
the research activity is done by researcher obtains the energy of impact
loading on the helmet. The information which is
obtained from this research will explain the effect of the impact energy
on helmet to user,
industry, and also
government. The objective
of this research
involves the measuring the
impact load, impact
stress, and the
energy absorbing by
helmet as effect
of impact loading. The
researcher collaborates with
the Impact and
Fracture Research Center (IRFC) that has built the testing
apparatus which is equipped with good acquisition data system. The helmet
is put on
the adjustable testing
rig. The impact
time can be
measured by eight inductive proximity sensors. The helmet
will be slide down and collide the anvil. The force will be measured with
the load cell
which is put
down the anvil
type of flat
plat. The data
will be transferred from the load
cell into the DAQ system which has function to change the analog into digital
signal. Finally, the data will be saved into PC as the force (N) and the impact
time (ms). The free-fall impact testing equipment has shown the best
performance on the force and impact time
signal reading as
long as the
research activity. The
maximum impact force
is 24.33 N; impact
stress is 2.7
kPa at the
elevation of 0.75
m. The minimum
energy which causes
the fracture on the helmet is 17.57 J at same elevation.
Penulis: Rahmat Kartolo
Simanjuntak
Kode Jurnal: jptmesindd110231
