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All Journal IJoLE: International Journal of Language Education Automotive Experiences
Abdulkareem Sh. Mahdi Al-Obaidi
Taylor’s University, Malaysia
Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Education Electrical & Electronics Engineering Energy Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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The Effects of Rice Husk Particles Size as A Reinforcement Component on Resin-Based Brake Pad Performance: From Literature Review on the Use of Agricultural Waste as A Reinforcement Material, Chemical Polymerization Reaction of Epoxy Resin, to Experiments Asep Bayu Dani Nandiyanto; Siti Nur Hofifah; Gabriela Chelvina Santiuly Girsang; Silmi Ridwan Putri; Bentang Arief Budiman; Farid Triawan; Abdulkareem Sh. Mahdi Al-Obaidi
Automotive Experiences Vol 4 No 2 (2021)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1287.118 KB) | DOI: 10.31603/ae.4815

Abstract

This study aims to investigate the effect of rice husks’ particle size on resin-based brake pad performance (i.e. compressive strength, puncture strength, mass loss, wear rate, friction coefficient, and heat resistance). Bisphenol A-epichlorohydrin and cycloaliphatic amine were mixed to form resin and used as the brake pad's base material. In the experiment, rice husk with a specific particle size (i.e., 250, 500, dan 1000 μm) was added to the resin. Rice husk has received considerable interest due to its lignin, cellulose, and silica content, making it suitable as friction material due to its ceramic-like behavior. The experimental results showed small rice husk particles improved compressive strength, puncture strength, and bulk density. This can be obtained from the analysis of the maximum compressive strength for brake pad supported by particles with sizes of 250, 500, and 1000 μm having values of 0.238; 0.173; and 0.144 MPa, respectively. In contrast, large particles formed coarse surfaces and pores, decreased mass loss rate, and improve friction properties (i.e. wear rate, friction coefficient). The friction coefficient values of brake pad supported by particles with sizes of 250, 500, and 1000 µm were, respectively, 0.2075; 0.2070; and 0.3379. Particle size affected interpacking, interfacial bonding, pores number and size, thermal softening, mechanical properties, and friction properties of the brake pad. Comparison between the prepared resin-based and commercial brake pad was also done, confirming the utilization of agro-waste as a potential alternative for friction material in the brake pad.
How Language and Technology Can Improve Student Learning Quality in Engineering? Definition, Factors for Enhancing Students Comprehension, and Computational Bibliometric Analysis Dwi Fitria Al Husaeni; Dwi Novia Al Husaeni; Risti Ragadhita; Muhammad Roil Bilad; Abdulkareem Sh. Mahdi Al-Obaidi; Asep Bayu Dani Nandiyanto
International Journal of Language Education Vol 6 No. 4, 2022
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/ijole.v6i4.53587

Abstract

The research aims to review developments in language and technology research that can improve the quality of teaching and learning in engineering. Several factors that can influence the teaching and learning process are explained, supported by a bibliometric analysis (with keywords “Language” AND “Engineering Learning” from Google Scholar from 2020 to 2022). The review includes the definition of engineering education with technology's advantages in engineering education. We also explained about purpose and service of language with what considerations in making strategies in language and technology for teaching and learning engineering education. Explanations about formal and informal learning as well as education level to learn engineering and curriculum development were also added. The application of technology in media and laboratories is also the main factor in improving literacy and language's impact on students. All factors cannot be separated from language and student characteristics, motivation, teacher-student relationships, therapy, and psychological condition. We also added information regarding language barriers for students with special needs and new language-improving technology for teaching. The results of the co-occurrence analysis expressed several points to be considered, including children, mathematics, STEM, education, and educators’ terms. Thus, it obtained that the principle of engineering education refers to the process of teaching and learning about scientific concepts, principles, and practices, and technology plays an important role because it is closely related to scientific principles and investigative methods. Language has an important role in supporting students' understanding and abilities in this subject since it conveys learning information. This paper can be used as a reference for educators to understand current conditions regarding the importance of language in the teaching and learning in the engineering field.
Co-Authors Al Husaeni, Dwi Fitria Asep Bayu Dani Nandiyanto Bentang Arief Budiman Dwi Novia Al Husaeni Gabriela Chelvina Santiuly Girsang Muhammad Roil Bilad Ragadhita, Risti Silmi Ridwan Putri Siti Nur Hofifah Triawan, Farid