Maximizing Retreaded Tire Hardness: An Experimental Investigation

Tires are vehicle parts that have a significant economic impact. When the tires reach their end-of-life, they can be retreaded for further use. A company in Padang, Indonesia, manufactures retreaded tires with hardness specifications of at least 61 Shore A. The technology used by the company is the...

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Main Authors: Wahyu Handayani Putri, Feri Afrinaldi, Taufik Taufik, Ramadhan Rizki Fernando
Format: Article
Language:English
Published: Department of Mechanical Engineering, Faculty of Engineering, Universitas Andalas 2024-10-01
Series:Metal: Jurnal Sistem Mekanik dan Termal
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Online Access:https://metal.ft.unand.ac.id/index.php/metal/article/view/289
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author Wahyu Handayani Putri
Feri Afrinaldi
Taufik Taufik
Ramadhan Rizki Fernando
author_facet Wahyu Handayani Putri
Feri Afrinaldi
Taufik Taufik
Ramadhan Rizki Fernando
author_sort Wahyu Handayani Putri
collection DOAJ
description Tires are vehicle parts that have a significant economic impact. When the tires reach their end-of-life, they can be retreaded for further use. A company in Padang, Indonesia, manufactures retreaded tires with hardness specifications of at least 61 Shore A. The technology used by the company is the hot cure retreading. Historical data showed that the process produced 7% of defective tires and cost the company $16 per unit of defective tires. It was identified that curing temperature, mold pressure, inner tube pressure, curing time, and fuel type mixed with adhesive affect tires’ hardness. This paper aims to find the best combination of the above parameters so that the hardness of the retreaded tires is maximized. Experiments were performed, and the Taguchi method was employed to design the experiments. Since the experiments have five factors, and each involves two levels, the degree of freedom of the experiments is five. There were three replications for each treatment. Thus, an L<sub>8</sub> orthogonal array was selected. The experimental results showed that the best combination of factors is curing temperature at 140 ˚C, mold pressure at 4 bar, inner tube pressure at 8 bar, curing time for 2 hours, and fuel mixed with adhesive was SBP. The above combination was predicted to produce an average hardness of 63.10 Shore A. A confirmation experiment was then performed by applying the above combination of factors, which resulted in an average hardness of 63.15 Shore A and no retreaded tires having hardness below 61 Shore A.
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institution Kabale University
issn 2598-1137
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publishDate 2024-10-01
publisher Department of Mechanical Engineering, Faculty of Engineering, Universitas Andalas
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series Metal: Jurnal Sistem Mekanik dan Termal
spelling doaj-art-dc98bb9202974d739020829967f1212f2025-02-01T10:20:40ZengDepartment of Mechanical Engineering, Faculty of Engineering, Universitas AndalasMetal: Jurnal Sistem Mekanik dan Termal2598-11372597-44832024-10-0182394810.25077/metal.8.2.39-48.2024148Maximizing Retreaded Tire Hardness: An Experimental InvestigationWahyu Handayani Putri0Feri Afrinaldi1Taufik Taufik2Ramadhan Rizki Fernando3Universitas AndalasUniversitas AndalasUniversitas AndalasUniversitas AndalasTires are vehicle parts that have a significant economic impact. When the tires reach their end-of-life, they can be retreaded for further use. A company in Padang, Indonesia, manufactures retreaded tires with hardness specifications of at least 61 Shore A. The technology used by the company is the hot cure retreading. Historical data showed that the process produced 7% of defective tires and cost the company $16 per unit of defective tires. It was identified that curing temperature, mold pressure, inner tube pressure, curing time, and fuel type mixed with adhesive affect tires’ hardness. This paper aims to find the best combination of the above parameters so that the hardness of the retreaded tires is maximized. Experiments were performed, and the Taguchi method was employed to design the experiments. Since the experiments have five factors, and each involves two levels, the degree of freedom of the experiments is five. There were three replications for each treatment. Thus, an L<sub>8</sub> orthogonal array was selected. The experimental results showed that the best combination of factors is curing temperature at 140 ˚C, mold pressure at 4 bar, inner tube pressure at 8 bar, curing time for 2 hours, and fuel mixed with adhesive was SBP. The above combination was predicted to produce an average hardness of 63.10 Shore A. A confirmation experiment was then performed by applying the above combination of factors, which resulted in an average hardness of 63.15 Shore A and no retreaded tires having hardness below 61 Shore A.https://metal.ft.unand.ac.id/index.php/metal/article/view/289experimentretreadtaguchitire
spellingShingle Wahyu Handayani Putri
Feri Afrinaldi
Taufik Taufik
Ramadhan Rizki Fernando
Maximizing Retreaded Tire Hardness: An Experimental Investigation
Metal: Jurnal Sistem Mekanik dan Termal
experiment
retread
taguchi
tire
title Maximizing Retreaded Tire Hardness: An Experimental Investigation
title_full Maximizing Retreaded Tire Hardness: An Experimental Investigation
title_fullStr Maximizing Retreaded Tire Hardness: An Experimental Investigation
title_full_unstemmed Maximizing Retreaded Tire Hardness: An Experimental Investigation
title_short Maximizing Retreaded Tire Hardness: An Experimental Investigation
title_sort maximizing retreaded tire hardness an experimental investigation
topic experiment
retread
taguchi
tire
url https://metal.ft.unand.ac.id/index.php/metal/article/view/289
work_keys_str_mv AT wahyuhandayaniputri maximizingretreadedtirehardnessanexperimentalinvestigation
AT feriafrinaldi maximizingretreadedtirehardnessanexperimentalinvestigation
AT taufiktaufik maximizingretreadedtirehardnessanexperimentalinvestigation
AT ramadhanrizkifernando maximizingretreadedtirehardnessanexperimentalinvestigation