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All Journal Jurnal MEKANIKAL Jurnal Energi Dan Manufaktur Jurnal Teknosains Jurnal Teknologi Rekayasa Mesin Sinergi Journal of Engineering and Technological Sciences DINAMIKA Jurnal Ilmiah Teknik Mesin Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Conference SENATIK STT Adisutjipto Yogyakarta JTT (Jurnal Teknologi Terapan) Jurnal Teknik Mesin Indonesia Indonesian Journal of Computing, Engineering, and Design Jurnal Material Teknologi Proses: Warta Kemajuan Bidang Material Teknik Teknologi Proses Journal of Mechanical Design and Testing (JMDT) Journal of Fibers and Polymer Composites National Multidisciplinary Sciences
Muslim Mahardika
Departemen Teknik Mesin Dan Industri, Fakultas Teknik, Universitas Gadjah Mada Jalan Grafika No. 2 Yogyakarta 55281 Telp. +62-274-521673
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Kekuatan Tekan 3d-Printed Poly (Methyl Methacrylate) Sebagai Kandidat Material untuk Baseplate Gigi Tiruan Lengkap Firly Nugroho, Ananda; Agus Salim, Urip; Mahardika, Muslim; Nuryanti, Archadian; Arifvianto, Budi
National Multidisciplinary Sciences Vol. 3 No. 1 (2024): PROCEEDING SEMAKIN E.1
Publisher : Universitas Muhammadiyah Jember

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Abstract

Saat ini, gigi tiruan khususnya gigi tiruan lengkap (GTL) umumnya dibuat dengan cara konvensional, yakni dengan proses polimerisasi berbasis heat curing pada material poly(methyl methacrylate) atau PMMA. Kekurangan dari metode konvensional ini terletak pada rendahnya akurasi produk yang dihasilkan, proses yang relatif lama serta kenyamanan gigi tiruan saat digunakan. Salah satu teknik yang berpeluang digunakan dalam pembuatan gigi tiruan adalah teknologi additive manufacturing (AM). Meski demikian, metode baru ini masih perlu diteliti secara mendalam untuk meyakinkan bahwa teknik ini dapat digunakan untuk membuat gigi palsu. Salah satu hal yang masih perlu dikaji tentang teknik AM untuk gigi palsu ini adalah aspek kekuatan material yang diperoleh dengan teknologi ini. Pada penelitian ini dilakukan pengujian tekan material PMMA yang dicetak dengan metode AM dan heat curing konvensional. Pengujian dilakukan setelah material tersebut direndam dalam larutan air ludah atau saliva buatan. Hasil dari penelitian ini menunjukkan bahwa material yang dibuat dengan menggunakan metode AM memiliki kuat tekan yang lebih tinggi daripada material yang dibuat secara konvensional. Nilai kuat tekan tertinggi diperoleh pada material yang dicetak AM sebesar 130 MPa.
Microhole Creation in FDM-Printed Sheet Polymers: A Punching Process Approach Agus Salim, Urip; Abdullah, Bulan; Suyitno; Pratama, Juan; Badranaya, Muhammad Imawan; Wijaya, Rahman; Mahardika, Muslim; Arifviyanto, Budi
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 6 No. 2 (2024): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/8r45gs31

Abstract

Fused deposition modeling (FDM) 3D printing is one of the additive manufacturing processes that can make components with complex shapes, require no tools, are cheap, safe, and have  minimal waste. Despite all the advantages of the FDM process, the inability of this technique to create holes on a micro scale can be a problem and limits its application. In this research, a combination of FDM and machining processes was carried out, where micro holes in FDM printed components were created using a punching process. The punching process is carried out by varying pressure and speed. Furthermore, the diameter of the hole and the quality of the sheared edge of the hole resulting from the punching process were evaluated through observation using an optical microscope. The results show that the holes resulting from the punching process have a better shape and diameter than the FDM process. Then, the analysis of the sheared edge from punching shows that pressure and speed significantly affect the surface quality of the resulting sheared edge, where the quality increases with increasing pressure and speed. In the end, the punching process was proven to create micro-scale holes in FDM-printed polymer, especially at minimum thickness. 
FABRIKASI DAN PENGUJIAN TELAPAK KAKI PALSU JENIS SINGLE AXIS Wardoyo, Christianus Pigun; Mahardika, Muslim; Suyitno, Suyitno; Dharmastiti, Rini; Salim, Urip Agus; Arifvianto, Budi
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.v15i3.1622

Abstract

Along with the increasing number of persons with disabilities, the need for prosthetic foot has also increased. However, the irony is that some of the products circulating in Indonesia are still imported from abroad, while the domestic product is quite limited and possesses some drawbacks. This study aims to study the production process of the single axis type of the right-side prosthetic foot as well as to evaluate the performance of this product. The prosthetic foot in this research was made from thermoplastic polyurethane (TPU) resin and prepared with casting by pouring it into a pre-fabricated mold. A single-axis type of right prosthetic product could have been successfully made in this study with men's shoe sizes EU 42 and a mass of 654 g. The result of evaluation of the material and foot prosthetic product showed an average Shore hardness value of 54.3 HA. According to the result of compression test, this prosthetic product was also able withstand the highest compressive load up to 259.76 kgf. Finally, the result of fatigue test showed no damage on the foot prosthetic product until 90.000 cycle.
Coloration study heat-cured polymer materials for denture base Setiyani, Rezki; Salim, Urip Agus; Mahardika, Muslim; Dharmastiti, Rini; Arifvianto, Budi
Jurnal Teknosains Vol 14, No 2 (2025): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.104274

Abstract

The color of denture base material is important in dentistry to achieve a natural gingival aesthetic. No universal standard for denture base color, due to it difficult for dentists and dental laboratory technicians to achieve consistent results. This study proposes a method for identifying the color of artificial gums made from heated cure polymers with coloring agents. This study also examined the effect adding color agent on the hardness of denture base material and the effect of artificial saliva immersion on coloring. New coloring agents, namely pink (P), red (M), and purple (U), were added to create new colors in this study. Seven specimens from light to dark colors were made. The resulting specimens were photographed and analyzed using Adobe Photoshop software to obtain the L*, a*, and b* values for each specimen, which were then analyzed using the CIELAB formula. The results of the material hardness test showed a significant change between the immersion and non-immersion groups (p-value 0.00<0.05), while the group between 10-day and 20-day immersion showed no significant change (p-value 0.65>0.05). In materials without added color, the hardness value is 85.3 - 86.3 HSD, while in materials with added color, the hardness value increases to 85.5 - 87.7 HSD. The results of the saliva immersion test showed changes in the range of 2.51 - 5.98 for 10 days of immersion and 0.85 - 4.22 for 20 days of immersion. Based on these results, most of the color changes are still below the clinical acceptance threshold of less than 4.1. Therefore, it can be concluded that the color changes that occur after soaking are still clinically acceptable.
Co-Authors . Suyitno Abdullah, Bulan Abdullah, Muhammad J.Q. Agus Salim, Urip Akhmad Tito Fismatika Akhmad Tito Fismatika Andi Sudiarsi Archadian Nuryanti Arifviyanto, Budi Badranaya, Muhammad Imawan Bambang Cahyadi Budi Arifvianto Budi Yuli Setianto Candra Irawan Danindra Brian Kusuma Dicky Oktavian Firly Nugroho, Ananda Gunawan Setia Prihandana Hariyanto, Satriawan Dini Martin Andre Setyawan Miftakhudin Miftakhudin Muhammad Akhsin Muflikhun Muhammad Habibi Muhammad Haritsah Amrullah Mukhsen, Muhammad Iqbal Nidia Lestari Pratama, Juan Radika Diwihagso Rini Dharmastiti Sakir Sakir Salim, Urip A. Salim, Urip Agus Sandi, Aris Setiyani, Rezki Sukmaji Indro Cahyono Sukmaji Indro Cahyono, Sukmaji Indro Suyitno Suyitno Suyitno Suyitno Suyitno Suyitno Suyitno Suyitno, Suyitno Tutik Sriani, Tutik Wardoyo, Christianus Pigun Wijaya, Rahman Wikan Kurniawan Yani Kurniawan Yosferi Saputra, Yosferi