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All Journal Indonesian Journal of Physics (IJP) Current STEAM and Education Research
widayani, widayani
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Arts Astronomy Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Physics

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Mechanical Traction Test of Pineapple Leaf Fiber-Epoxy Composite Noeriman, Abiyoga; widayani, widayani; Adhika, Damar Rastri
Indonesian Journal of Physics Vol 35 No 1 (2024): vol 35 no 1 2024
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itb.ijp.2024.35.1.5

Abstract

Natural fiber-based composites are widely developed to replace materials in various industries, such as furniture and sound absorbers. One of the composite properties that is often considered for its use is mechanical property. In this study, the mechanical properties of pineapple leaf fiber-epoxy composites were studied using traction tests. The composite was made by mixing of small pieces of pineapple leaf fiber with epoxy resin, then the mixture was placed in a mold and pressed with a certain pressure at 100 °C for 2 hours. Traction tests were carried out on the pineapple leaf fiber-epoxy composites with two different epoxy concentrations (11 and 17 % wt), and different manufacturing pressure (0.22; 0.65; 1.09 MPa). The traction test results show that the maximum stress (ultimate tensile strength/UTS), elongation at break (EAB) and modulus of elasticity (E) increase with increasing epoxy content. Increasing the manufacturing pressure increases modulus of elasticity. However, the maximum UTS and EAB were shown by the composite with a manufacturing pressure of 0.65 Pa, not at the higher pressure (1.09 Pa).
Development of a STEM-Based Circular Motion Module Integrated with the Engineering Design Process Ramadannisa, Raffa Fitra; Amelia, Nurul Chandra; Rulifiangga, Firda; Widayani, Widayani; Triyanta, Triyanta
Current STEAM and Education Research Vol. 3 No. 2 (2025): Current STEAM and Education Research, Volume 3 Issue 2, August 2025
Publisher : MJI Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58797/cser.030201

Abstract

The low mathematics literacy and science skills of Indonesian students can be caused by among other, the lack of learning media that can improve students’ conceptual understanding, especially in physics. The STEM approach and the Engineering Design Process (EDP) methods can improve problem-solving and creative thinking skills. Therefore, this study aims to develop learning media with the STEM approach and the Engineering Design Process method for Physics subject, namely Circular Motion. The method used in this study is Research and Development with the ADDIE development model, which is limited to: 1) Analysis, 2) Design, 3) Development. The design and development stage involved material and learning experts to test the feasibility of the developed module. The average value of material feasibility of the module is 85.00% with the category “feasible and can be used with minor revisions.” While the average value of learning feasibility is 87.00% with the category “very feasible and can be used without revision”. The result of this study is expected to be the basis for the development of other learning media based on STEM and EDP syntax to improve students’ skills.
Development of a STEM-Based Circular Motion Module Integrated with the Engineering Design Process Ramadannisa, Raffa Fitra; Amelia, Nurul Chandra; Rulifiangga, Firda; Widayani, Widayani; Triyanta, Triyanta
Current STEAM and Education Research Vol. 3 No. 2 (2025): Current STEAM and Education Research, Volume 3 Issue 2, August 2025
Publisher : MJI Publisher by PT Mitra Jurnal Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58797/cser.030201

Abstract

The low mathematics literacy and science skills of Indonesian students can be caused by among other, the lack of learning media that can improve students’ conceptual understanding, especially in physics. The STEM approach and the Engineering Design Process (EDP) methods can improve problem-solving and creative thinking skills. Therefore, this study aims to develop learning media with the STEM approach and the Engineering Design Process method for Physics subject, namely Circular Motion. The method used in this study is Research and Development with the ADDIE development model, which is limited to: 1) Analysis, 2) Design, 3) Development. The design and development stage involved material and learning experts to test the feasibility of the developed module. The average value of material feasibility of the module is 85.00% with the category “feasible and can be used with minor revisions.” While the average value of learning feasibility is 87.00% with the category “very feasible and can be used without revision”. The result of this study is expected to be the basis for the development of other learning media based on STEM and EDP syntax to improve students’ skills.
Co-Authors Adhika, Damar Rastri Amelia, Nurul Chandra Noeriman, Abiyoga Ramadannisa, Raffa Fitra Rulifiangga, Firda Triyanta Triyanta