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

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