https://ph01.tci-thaijo.org/index.php/jermutt/issue/feed 2025-08-19T11:00:32+07:00 ผศ.ดร.ปรกช สิริสุวัณณ์ enjournal@en.rmutt.ac.th Open Journal Systems <p>Frontiers in Engineering Innovation Research has ISSN 3056-9273 (Online). It has published the high quality of article on physical science and technology which emphasize on engineering research. The target groups of the publication consist of lecturer, under graduate student, graduate student and researcher whose are the insider and third party of Rajamangala University of Technology Thanyaburi. This journal has published 2 issues per year such as the issue number 1 on January to June and the issue number 2 on July to December. </p> https://ph01.tci-thaijo.org/index.php/jermutt/article/view/260926 2025-06-05T09:45:22+07:00 Athapon Simpraditpan athapon.s@en.rmutt.ac.th Kawita Chattrakul kawita.c@en.rmutt.ac.th Anothai Polsuwan anothai.p@en.rmutt.ac.th Wichain Chailad wichain_c@rmutt.ac.th Narongchai O-Charoen narongchai.o@en.rmutt.ac.th

<p>This study focuses on the investigation of the selected mechanical properties including izod impact strength, tensile strength, and hardness of composite materials made from the used high-density polyethylene (UHDPE) reinforced with mango peel (MP) powder. The UHDPE/MP composites were prepared using a two-roll mill process, followed by compression molding to form the rectangular sheet specimens. Experimental results revealed that the hardness of HDPE was increased with higher mango peel powder content. The UHDPE/MP composite with 50 pph of MP powder exhibited the highest hardness value of 68.29, likely due to the dispersed mango peel particles enhancing the rigidity of the HDPE matrix. Conversely, both Izod impact strength and tensile strength decreased as the mango peel powder content increased. The UHDPE/MP composite containing 10 pph of mango peel powder showed an Izod impact strength of 0.08 J/mm and a tensile strength of 25.47 MPa. This reduction in toughness and strength at higher filler loadings (30, 40, and 50 pph) may be attributed to poor interfacial adhesion between HDPE and the MP powder, and excessive filler agglomeration, which could compromise the structural integrity and increase brittleness of the UHDPE/MP composites. Therefore, the UHDPE/MP composite containing 10 pph of MP powder is considered most suitable for applications requiring good tensile properties, whereas the composite with 50 pph is more appropriate for products that demand enhanced hardness.</p>

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