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The present study aims to overcome this kind of problem by finding the best aluminum alloy for industries like aerospace and automotive which are seeks to made parts with this material because of its outstanding properties. A Multi Criteria Decision Making (MCDM) method known as TOPSIS (Technique of Order Preference by Similarity to the Ideal Solution) is utilized under fuzzy environment considering multiple qualitative and quantitative criterion values. A number of decision maker\u2019s opinion is considered with a Triangular fuzzy numbers for weighing the criteria. Best alternative is chosen based on the distance of alternatives from positive and negative ideal solution. It is observed that Al-5083-H112 is the best alternative. Sensitivity analysis is also done to determine how different values of an independent variable will impact a particular dependent variable under a given set of assumptions.<\/jats:p>","DOI":"10.3233\/jifs-161049","type":"journal-article","created":{"date-parts":[[2016,10,28]],"date-time":"2016-10-28T10:36:21Z","timestamp":1477650981000},"page":"871-876","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":16,"title":["Selection of optimal aluminum alloy using TOPSIS method under fuzzy environment"],"prefix":"10.1177","volume":"32","author":[{"given":"Pushparenu","family":"Bhattacharjee","sequence":"first","affiliation":[{"name":"Production Engineering Department, NIT, Agartala, India"}]},{"given":"Abhiman","family":"Debnath","sequence":"additional","affiliation":[{"name":"Production Engineering Department, NIT, Agartala, India"}]},{"given":"Sujoy","family":"Chakraborty","sequence":"additional","affiliation":[{"name":"Production Engineering Department, NIT, Agartala, India"}]},{"given":"Uttam Kumar","family":"Mandal","sequence":"additional","affiliation":[{"name":"Production Engineering Department, NIT, Agartala, India"}]}],"member":"179","published-online":{"date-parts":[[2016,10,28]]},"reference":[{"key":"e_1_3_1_2_2","doi-asserted-by":"crossref","unstructured":"VidalC. 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