Application of data envelopment for technical efficiency analysis of the electrohydraulic forming process using the aluminum alloy sheets for automotive panels | ||||
| The Egyptian International Journal of Engineering Sciences and Technology | ||||
| Volume 47, Issue 2, September 2024, Page 76-91 PDF (978.01 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/eijest.2023.219518.1238 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Sunday Ayoola Oke   1; Elkanah Olaosebikan Oyetunji2; Kasali Aderinmoye Adedeji2; John Rajan 3; Ebun Fasina4; Babatunde Alade Sawyerr4; Olusola Michael Adeyemi5
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| 1Department of Mechanical Engineering, Faculty of Engineering, University of Lagos, NIGERIA | ||||
| 2Department of Mechanical Engineering, Lagos State University, Epe | ||||
| 35Department of Manufacturing Engineering, School of Mechanical Engineering, Vellore Institute of Technology, Vellore, India | ||||
| 4Department of Computer Science, University of Lagos, Lagos, Nigeria | ||||
| 5Department of Mechanical Engineering, University of Lagos, Lagos, Nigeria | ||||
| Abstract | ||||
| Presently, there exists a dearth of useful practical guidance on the operational efficiency of electrohydraulic forming setups for industrial applications. Despite the increasing demand for efficient operations by managers, the deployment of technical efficiency methods has not been contemplated to distinguish elements of the process that should be given more attention than others distinguished by performance. Consequently, this article proposes an application of data envelopment analysis to practical experimental data obtained from the literature for improved performance. As a platform for analysis, the DEAP 2 application software is deployed to examine the major parameters of the process, namely the stand-off distance (SOD), electrode, voltage and medium while the peak strain is considered as the output. Based on the structure of the problem, the technical efficiency of the process was broken into nine firms. Results indicate that the technical efficiency of forms 1 to 9 is 0.817, 1-000, 1.000, 1.000, 1.000, 0.692, 1.000, 0.613, and 0.532, respectively. The mean efficiency is then 0.850. Furthermore, the mean input slacks for the SOD, electrode, voltage and medium parameters are 1.531, 3.620, 3.027 and 0.049, respectively. Besides, the peers for firms 1 to 9 are (5, 2), 2, 3, 4, 5, (7,5), 7, (5,4), and (7,5), respectively. In addition, the peer weights were attained for firms 1 to 9 as (0.272, 0.272), 1.000, 1.000, 1.000, 1.000, (0.369, 0.138), 1.000, (0.369, 0.138), 1.000 (0.002, 0517), and (0.0099, 0363), respectively. The work is useful in developing operational policies, which contribute to the sustainability of the process. | ||||
| Keywords | ||||
| Peers; performance; electrode; voltage; analysis-technique | ||||
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