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All Journal Jurnal Teknik Industri Jurnal Teknosains Jurnal Teknik Mesin Indonesia Mekanika: Majalah Ilmiah Mekanika SEMAR
Joko Triyono
Department Of Mechanical Engineering, Sebelas Maret University, Surakarta, Indonesia
Aerospace Engineering Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Social Sciences

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Analisa pengaruh variasi media quenching dan penambahan silikon pada paduan al-si remelting velg sepeda motor terhadap sifat fisik dan mekanis Andi Septiadi; Teguh Triyono; Joko Triyono
Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (509.065 KB) | DOI: 10.36289/jtmi.v11i2.55

Abstract

The disposition of aluminum is lightweight, high corrosion resistance, low density, can be formed properly, and a high conductivity both thermal and electrical. Remelting process has a defect (porosity) however the weakness of remelting is ability of a material decreases along with the treatment. The additional silicon on the materials aim to improve the characteristics. This research was done to find out the effect of silicon variant and it had been quenched with a variant of cooling media. The material that had been used was Aluminum-Silicon (Al-Si) from velg motorcycle waste. Casting processing method that was done using sand casting. The ingredients of remelting Al-Si with silicon addition (Si) are 2%, 4% and 6%. The specimen was formed based on JIS Z 2202 for tenstile strength. Heat treatment had been performed on the specimen with temperatur 520oC for 1 hour, and quenched on water and oil as a cooling media. Testings were performed; ingredient test, tensile test, hardness test, dan micro structure. he result testing of tensile strength and hardness showed the average value increased with additional silicon and quenching treatment. Tenstile strength and hardness specimen using a water as a cooling media have a better value than an oil SAE 40 as a cooling media.
Optimization of Electroplating Thickness Quality at Hip Joint Implant using the Taguchi Method Sela Angela Putri; Eko Pujiyanto; Joko Triyono
Jurnal Teknik Industri Vol. 20 No. 1 (2019): February
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.818 KB) | DOI: 10.22219/JTIUMM.Vol20.No1.45-52

Abstract

The hip joint is one of the most often used joints by humans in their activities. The hip joint can be impaired if an accident or an illness such as osteoarthritis-affected. It makes the patients need to get implants to restore their productivity. The implant must be biocompatible, bioactive, and have high strength and resilience to prevent damage. The implants in this study were made from 304 Stainless Steel. One of the stages in making implants is the electroplating process. The electroplating method implemented is hard chrome. Some operating conditions that affect the electroplating process and are used as independent variables are the concentration of chromic acid, electrical voltage, and length of coating time. This study aims to Optimization of Electroplating Thickness Quality at Hip Joint Implant. This study uses the Taguchi method to design the experiment and to obtain the optimum electroplating thickness results. ANOVA is used to obtain the effective prediction of the significance level. Process ANOVA was helped Minitab 16. Based on the ANOVA, it is known that the most significant factor for the electroplating thickness is the concentration of chromic acid, the voltage, and the least influential factor is the electroplating time.
ADVANCES IN BIOMATERIALS SCIENCE AND BIOMEDICAL APPLICATIONS Joko Triyono
Jurnal Teknosains Vol 6, No 2 (2017): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.27870

Abstract

“Advances in Biomaterials Science and Biomedical Applications” merupakan buku teks yang disusun oleh beberapa penulis dari berbagai disiplin ilmu dari berbagai negara. Setiap bab yang ditulis merupakan hasil kajian, penelitian atau pengalaman pribadi penulis. Para pembaca dapat memperoleh gambaran umum untuk mengetahui potensi biomaterial di masa-masa mendatang. Pembaca juga akan mendapatkan gambaran bagaimana proses fabrikasi material implan berbasis organ manusia dilakukan dengan teknologi cetak 3 dimensi (3D printing). Buku ini terbagi menjadi 21 bab. Setiap bab diulas secara detail agar mudah dipahami.
Analisys of Tensile Strength, Wear Rate, and Cristallinity of Biocomposite Nano-HA/Magnesium/Shellac Reinforced Cantula Fiber for Bone Screw Material Dea Pawestry Utami; Joko Triyono; Wijang Wisnu Raharjo; Rachmad Imbang Tritjahjono
Mekanika: Majalah Ilmiah Mekanika Vol 23, No 1 (2024): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v23i1.71127

Abstract

Accidents are a major cause of fractures in Indonesia. One of the treatments for fractures is bone screws with support plates that are placed on broken bone. Currently, many biomaterials for bone screws are being developed which have biodegradable properties so that post-operative bone healing is not required. The purpose of this study was to determine the effect of cantula fiber addition on tensile strength, wear rate, and crystallinity of nano-HA/magnesium/shellac bio-composite for bone screw materials. Nano-HA/magnesium/shellac/cantula fiber materials were mixed using a blender. The material was mixed with a magnesium/hydroxyapatite ratio of 70/30 and cantula fiber was added with variations of 0%, 10%, 20% and 30% of total volume. After that, material mixture was compacted with a pressure of 300 MPa for 10 minutes. Then sintering process was carried out at temperature of 140 °C for two hours. The results showed that the highest tensile strength value was 7.86 MPa at 30% variation. The lowest wear rate was 0.31 x 10-3 mm3/Nm at 30% variation. The highest crystallinity in X-Ray Diffraction observations was obtained at 30% variation, which was 79.65%.
Design Analysis and Structural Prediction of Bus Driver Chair Support: A Study Case using HOQ and FEM Joung Hyung Cho; Ridwan Ridwan; Rama Panji Kusuma; Joko Triyono; Nurul Muhayat; Aprianur Fajri; Fajar Budi Laksono
Mekanika: Majalah Ilmiah Mekanika Vol 22, No 1 (2023): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v22i1.44371

Abstract

The bus driver's comfort is crucial. The location of the driver's seat, which is correlated with the seat support design, is one of the elements supporting his comfort. By considering the safety factor, House of Quality (HOQ), weight, shape, and seat support dimensions, this study intends to ascertain how the characteristics of the bus seat support form after receiving a load or force. Conducting a field visit to gather the necessary data was the initial step in this research. The following stage was to decide on the design criteria based on the collected data. Next, use SolidWork to model the design. Using the Finite Element Method (FEM), this program can investigate design characteristics. The loading simulation under consideration included clutch engagement, bus brake application, and clutch engagement, whether the support was static or stationary. The validation with two supporting journals was then run as the following step to validate the findings. According to the study's findings, the constant chair support fulfills the typical value, whereas Support 1 was the most fracture-prone. The outcomes of Supports 2 and 3 demonstrated that the support strength was weak since it was subjected to an unequal load.
Retrofit Mesin Emco Concept 55 Turning Unit Menggunakan Pengendali Mach 3/4 Untuk Meningkatkan Fleksibilitas Pembelajaran Cnc Heru Sukanto; Iwan Istanto; Purwadi Joko Widodo; Fitrian Imaduddin; Budi Santoso; R Lullus Lambang GH; Joko Triyono; Rahman Wijaya
SEMAR (Jurnal Ilmu Pengetahuan, Teknologi, dan Seni bagi Masyarakat) Vol 15, No 1 (2026): Mei
Publisher : LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/semar.v15i1.110616

Abstract

Penggunaan mesin CNC untuk menghasilkan produk dengan akurasi yang tinggi sangat penting dalam perkembangan industri saat ini. Mesin Emco Concept 55 Turning Unit adalah salah satu mesin bubut CNC yang populer pada masanya karena kehandalannya dalam menghasilkan produk dengan akurasi tinggi. Namun, seiring perkembangan teknologi, mesin ini mulai mengalami keterbatasan, terutama dalam hal sistem kontrol dan kompatibilitas dengan perangkat lunak modern. Retrofit mesin CNC adalah solusi yang semakin populer untuk mengatasi masalah ini. Retrofit dimulai dengan persiapan dan analisis awal dengan melakukan inspeksi menyeluruh terhadap kondisi mesin untuk mengevaluasi komponen mekanis, elektrik, dan sistem kontrol yang ada. Setelah itu dilakukan pembongkaran sistem kontrol lama dan memasang sistem kontrol baru serta mengatur konfigurasi perangkat lunak yang baru. Setelah semua komponen terpasang pengujian dan optimasi dilakukan agar mendapatkan hasil dan maksimal. Tahap terakhir dalam retrofit adalah finalisasi agar semua komponen terpasang dengan rapi dan aman sesuai dengan desain yang ditetapkan. Dari kegiatan ini dihasilkan mesin CNC dapat kembali berfungsi dengan baik dan kompatibel dengan software modern, memiliki antarmuka grafis yang intuitif, dan dapat terhubung ke sistem jaringan untuk mendukung pemantauan dan integrasi ke dalam ekosistem Industri 4.0. Kata kunci: CNC; Retrofit; Antar muka; Integrasi; Industri 4.0
Co-Authors Abu Masykur Andi Septiadi Antonius Adi Hendra Saputra Aprianur Fajri Budi Santoso Dea Pawestry Utami Eko Pujiyanto Fajar Budi Laksono Fitrian Imaduddin Heru Sukanto Iwan Istanto Izmi Mahfudi Joung Hyung Cho Muhayat, Nurul Purwadi Joko Widodo R Lullus Lambang GH Rachmad Imbang Tritjahjono Rahman Wijaya Rama Panji Kusuma Ridwan Ridwan Sela Angela Putri Taufiq Hidayat Teguh Triyono Teguh Triyono Teguh Triyono Wijang Wisnu Raharjo