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All Journal Rekayasa Mesin AL-KHAZINI: JURNAL PENDIDIKAN FISIKA
Malik , Adam
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Education Engineering Mechanical Engineering Physics

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METODE PENINGKATAN KETAHANAN RETAK RESIN POLYESTER DENGAN PENAMBAHAN PROSENTASE VINYL ESTER Nusyirwan, Nusyirwan; Hizhar, Yul; Malik , Adam
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1436

Abstract

In previous studies, hybrid crash boxes have been developed because it show better energy absorption characteristics. Circular hybrid crash box combine the advantages of low-density of composite with stable deformation of metal provide a potential energy absorption device. Tests were carried out experimentally and iumerically under frontal load. This study aims to determine the energy absorption characteristics of two different configuration of hybrid material compositions using Aluminum Alloy 6063 and T300-epoxy Carbon Fiber composites. Present two typical configurational schemes, namely Al-Ko (i.e. a metal outer tube internally filled with an inner carbon fiber reinforced plastic (CFRP) tube) and Ko-Al (i.e. an outer composite tube internally filled with an inner metal tube). Composite layups arrangement with fiber orientation direction [0,90]10. First, the simulation models were developed and validated by comparing the damage modes and crashworthiness indictors with the dedicated experimental study. Second, the interactive effects of different configuration hybrid tubes were investigated by analyzing the discrepancies in the deformation pattern and internal energy absorption of each material through the validated simulation models. The test results show that the greatest energy absorption occurs in the Al-Ko model of 7401.4 J. This hybrid crash box has an energy absorption value of 11% greater compared to the sum of the energy absorption of aluminum tubes (3746.5 J) and composite tubes (2923.4 J).
Analysis of the Relationship between Mass and Spring Constant through PheT Simulations Widya Noerafifah, Dinna; Fikri, Fikri; Nurfadilla, Dilla; Malik , Adam
Al-Khazini Vol 5 No 1 (2025): APRIL
Publisher : UIN Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-khazini.v5i1.43942

Abstract

Springs can be found in various shapes and sizes depending on the application. Springs can be used to store energy, maintain position or dampen vibrations, and also to produce the necessary force in mechanical systems. This research was carried out using a virtual lab based on phet simulations. Phet simulations are simulations that can be used by teachers in teaching fraction material in class. The method used in this research uses a quantitative method by processing practical statistical data virtually. The data can be measured and calculated directly and the explanation is expressed in numbers or figures. The technique used in collecting data is by carrying out several experiments and entering different variable values. From this research, the results obtained are that gravity has a directly proportional relationship to the amount of potential energy of the spring. The greater the weight force acting on the spring system, the greater the potential energy of the spring.  
METODE PENINGKATAN KETAHANAN RETAK RESIN POLYESTER DENGAN PENAMBAHAN PROSENTASE VINYL ESTER Nusyirwan, Nusyirwan; Hizhar, Yul; Malik , Adam
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1436

Abstract

In previous studies, hybrid crash boxes have been developed because it show better energy absorption characteristics. Circular hybrid crash box combine the advantages of low-density of composite with stable deformation of metal provide a potential energy absorption device. Tests were carried out experimentally and iumerically under frontal load. This study aims to determine the energy absorption characteristics of two different configuration of hybrid material compositions using Aluminum Alloy 6063 and T300-epoxy Carbon Fiber composites. Present two typical configurational schemes, namely Al-Ko (i.e. a metal outer tube internally filled with an inner carbon fiber reinforced plastic (CFRP) tube) and Ko-Al (i.e. an outer composite tube internally filled with an inner metal tube). Composite layups arrangement with fiber orientation direction [0,90]10. First, the simulation models were developed and validated by comparing the damage modes and crashworthiness indictors with the dedicated experimental study. Second, the interactive effects of different configuration hybrid tubes were investigated by analyzing the discrepancies in the deformation pattern and internal energy absorption of each material through the validated simulation models. The test results show that the greatest energy absorption occurs in the Al-Ko model of 7401.4 J. This hybrid crash box has an energy absorption value of 11% greater compared to the sum of the energy absorption of aluminum tubes (3746.5 J) and composite tubes (2923.4 J).
Co-Authors Fikri Fikri Nurfadilla, Dilla Nusyirwan Nusyirwan Widya Noerafifah, Dinna Yul Hizhar