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Journal of Applied Mechanical Engineering Innovation
Published by Universitas Negeri Yogyakarta
ISSN : -     EISSN : 3109452X     DOI : -
Core Subject :
Journal of Applied Mechanical Engineering Innovation (JAMEI) is a premier platform dedicated to the dissemination of innovative research, technological advancements, and practical applications within the field of mechanical engineering. We aim to foster a global community of engineers, researchers, and practitioners by providing a comprehensive repository of high-quality articles that address both theoretical and experimental aspects of mechanical systems. Focus and Scope : Our journal covers a wide range of topics, including but not limited to: Thermodynamics and Fluid Mechanics Structural Analysis and Materials Science Robotics and Automation Computational Fluid Dynamics (CFD) Design and Manufacturing Processes Mechatronics and Control Systems Renewable Energy Systems We invite original research papers, review articles, and case studies that contribute to the advancement of mechanical engineering practices. Our rigorous peer-review process ensures that published work meets the highest standards of scientific excellence.
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Articles 12 Documents
 1   2 
Formability and Mechanical Properties of Polyvinyl Chloride (PVC) in the Thermoforming Process Rahmadi Nurapela Nugraha; Arianto Leman Soemowidagdo; Prihatno Kusdiarto
Journal of Applied Mechanical Engineering Innovation Volume 01, No. 02 October 2025
Publisher : Program Studi Sarjana Terapan Teknik Mesin, Fakultas Vokasi, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamei.v1i2.3039

Abstract

This study investigated the effects of polyvinyl chloride (PVC) sheet thickness and heating temperature on formability, tensile properties, and thickness shrinkage in the thermoforming process. PVC sheets with thicknesses of 0.15, 0.20, and 0.25 mm were processed at 140, 160, and 170 °C. The experiment consisted of nine treatment combinations, with three repetitions for each combination, giving a total of 27 specimens. Data were obtained by observing the formability of the thermoformed products, measuring tensile properties using a universal testing machine, and measuring thickness changes using a digital microscope and a thickness gauge. The results show that both thickness and temperature affect the thermoformability and mechanical performance of PVC sheets. The highest tensile strength after thermoforming was obtained at a thickness of 0.25 mm and a temperature of 140 °C, with a stress value of 42.7 MPa or a maximum load of 4.30 kgf. Increasing the forming temperature reduced tensile strength, particularly for thinner materials. The greatest shrinkage was 53.3%, observed at a thickness of 0.15 mm and a temperature of 170 °C. Overall, thinner PVC sheets formed more easily at higher temperatures, but they also experienced greater shrinkage and lower tensile strength
The Influence of Matrix Shape and Resin Composition on Tensile and Bending Strength Zufar Jamaluddin; Yatin Ngadiyono; Arif Marwanto
Journal of Applied Mechanical Engineering Innovation Volume 01, No. 02 October 2025
Publisher : Program Studi Sarjana Terapan Teknik Mesin, Fakultas Vokasi, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamei.v1i2.3040

Abstract

This study aims to determine the differences in tensile and bending strength caused by the use of 45° and 0° fiber orientations, to identify the ideal resin and catalyst composition, and to explain the mismatch between direct testing and ANSYS simulation results. The research used an experimental method. The specimen manufacturing process included preparation of tools and materials, mold preparation, resin-catalyst mixing, fiber preparation, vacuum infusion, cutting, and sanding. The specimens were manufactured using hand lay-up and vacuum infusion by arranging fibers on the mold and applying vacuum pressure at the end of the fabrication process. The results show that carbon composite laminates with 0° fiber orientation provide greater tensile and bending strength than those with 45° fiber orientation. The carbon composite had the highest tensile load when the resin and catalyst composition was 4:1, while the highest bending load was obtained for the 3:1 resin and catalyst composition. The difference between simulation and direct testing was caused by the assumption in ANSYS that the fiber-matrix bonding was perfect, while in actual specimens the resin distribution and bonding varied due to the vacuum infusion process.

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