Gradation of Raw Jute Fibres Using Evaluation based on Distance from Average Solution (EDAS) Method
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ORIGINAL CONTRIBUTION
Gradation of Raw Jute Fibres Using Evaluation based on Distance from Average Solution (EDAS) Method Ashis Mitra1
Received: 2 May 2020 / Accepted: 20 September 2020 The Institution of Engineers (India) 2020
Abstract Alike cotton fibre, the quality of jute fibres is not uniform; rather, it varies from place to place owing to various reasons. However, jute pricing is fixed based on its quality. The traditional ‘hand and eye’ method of jute grading is totally done by subjective assessment. Modern BIS system is a more scientific approach of jute gradation based on six apposite physical fibre parameters like strength, defect, root content, fineness, colour and bulk density; the latter two parameters are still assessed subjectively. In this paper, a newly developed EDAS (evaluation based on distance from average solution) approach of MCDM (multi-criteria decision making) has been proposed for ranking/gradation of nine candidate jute fibres on the basis of the above-mentioned six fibre parameters. The proposed approach demonstrates a significant agreement in ranking performance with the earlier methods. The sensitivity analysis based on changing the weights of criteria further bolsters the stability of ranking performance of the proposed approach. Keywords Appraisal score EDAS Jute Gradation MAHP MCDM
Introduction India and Bangladesh are the largest jute-producing countries of the world [1]. Jute plays a very vital role in Indian economy. In organized and unorganized sectors of jute & Ashis Mitra [email protected] 1
Department of Silpa-Sadana, Visva-Bharati University, Sriniketan, Birbhum, West Bengal, India
industry and allied activities, more than 0.37 million workers are engaged directly or indirectly, and the livelihood of several lakh farmers’ families is also supported by it. India produces around 50% of estimated jute goods of the entire world. A substantial amount of export earnings is made each year out of jute goods besides its vast domestic consumption (Ministry of Textiles 2018–19). Alike cotton fibres, the quality of jute fibres varies from place to place for various reasons, though quality of fibres has a great bearing on the end product. Therefore, it is imperative to have a sound classification and grading system for jute fibres upon which jute pricing should be fixed [1–3]. Traditional method for quality assessment and grading of jute fibres is ‘hand and eye’ method which needs intervention of the domain experts heavily. This method obviously varies from grader to grader because of the subjective nature of the assessment. Some scientific methods are adopted, however, based on experimental evaluation of certain crucial fibre parameters in order to eliminate or minimize the error of human assessment. BIS grading system is one such scientific grading system introduced by Bureau of Indian Standards in 1969 [1, 2]. Although BIS method was initially introduced to identify eight grades on the basis of seven jute fibre properties, the modern BIS system was employed to
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