An Experimental Verification of a Methodology for Assessing The Energy Performance on Turning Processes
Abstract: This paper aimed to
experimentally verify the methodology forassessing energy performance of
turning processes that had been developed onthe prior research. Specific energy
consumption is used as the indicator in theprocess assessment. The experimental
verification can be separated into twomain steps. The first step is to
construct the reference values of specific energyconsumption and the second
step is to compare the reference values to thespecific energy consumption from
the assessed process. The reference values were constructed based on the data
of specific energy (from experiment) usingdata envelopment analysis (DEA)
method. In this case, MaxDEA Basic 6.6program has been used to determine the
reference values. The experiment wasconducted using several lathe machines
based on the certain metering strategy.The metering strategy must be determined
to maintain the consistency andvalidity of the process assessment. After the
reference values were constructed, the assessment can be carried out. Energy
consumption from the assessedprocess was measured using power analyzer, and
then it was converted intospecific energy consumption value according to the
material removal rate.Energy reduction score could be calculated based on the
distance between the data of specific
energy consumption (from the assessed process) and thereference value. The
energy performance of the machine is better if the score ofenergy reduction is
lower and nearer to the reference value. The methodology was designed to be as
simple as possible in order to be appropriatelyimplemented on the industry, but
without reduce the quality of the assessment. shedding.
Keywords: verification;
methodology; assessment; specific energy consumption; data envelopment analysis
Author: Sri Raharno, Yatna
Yuwana Martawirya, and Jeffry Aditya Cipta Wijaya
Journal Code: jptmesingg160004
