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All Journal Jurnal Teknosains Journal of Engineering and Technological Sciences ROTOR: JURNAL ILMIAH TEKNIK MESIN Journal of Mechanical Engineering Science and Technology STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Jurnal Elemen ComTech: Computer, Mathematics and Engineering Applications Abdi Dosen : Jurnal Pengabdian Pada Masyarakat V-MAC (Virtual of Mechanical Engineering Article) Proceeding of International Conference Health, Science And Technology (ICOHETECH)

Danang Yudistiro

Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Jember, Jalan Kalimantan No. 37, Jember 68121, Indonesia

Author-ID : 3225075

Religion Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences

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Akurasi dimensi produk filamen 3d printing berbahan polipropilen menggunakan mesin ekstrusi Mochamad Edoward Ramadhan; Mahros Darsin; Sains Ilham Akbar; Danang Yudistiro
Jurnal Teknosains Vol 11, No 2 (2022): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.63878

Additive manufacturing (AM) has been trending topic in industrial revolution 4.0. One technique and the most widely used AM is fused deposition modeling (FDM), which uses a melted filament and deposited it layer by layer. The common filaments used are made of PLA, PP, and ABS, which are available at the online market with variety of prices depend on the quality. It is an advantage if we can make these filaments. In filament manufacturing, the dimensional accuracy is one of the most important factors to comply with the existing 3D printers. The aim of this research is to fabricate a filament made of PP, then assessed the quality based on the accuaray of the targeted diameter of 1.75 mm. The manufacturing process used a self-made plastic extrusion machine. Variations were made on three variables with three levels each. There are (i) heater band temperature with a minimum and maximum range (150/170 oC, 155/175 oC and 160/180 oC), (ii) winding speed (13 mm/s, 16 mm/,s and 19 mm/s), and (iii) roll distance to the nozzle set point (200 mm, 500 mm and 700 mm). Taguchi L9 design was used to design the experiments and analysis.Minitab 19 was employed to find the S/N ratio and analysis the variance (ANOVA). The results of the analysis state that two parameters have a significant effect on the dimensions of the filament, i.e. temperature and roll distance to the nozzle, while, the winding speed has no dominat effect. The best accuracy of filaments diameter was achieved when applying a combination of temperature (160/180 ⁰C), the distance between the nozzle to the roll of 700 mm, and winding speed of 13 mm/s.

PENGARUH TEMPERATURE, HOLDING TIME, DAN PENAMBAHAN Sn TERHADAP CACAT SHRINKAGE PADA PROSES SINTERING METAL INJECTION MOLDING AL-PP Ahmad Rendi Maulana; Danang Yudistiro; Mochamad Asrofi
ROTOR Vol 14 No 1 (2021)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Metal injection molding (MIM) is a relatively recent technological process used in the powder metallurgy industry, which is highly efficient and useful for the manufacture of large quantities of small and complex metal components. MIM consists of four basic steps consisting of mixing, injection molding, debinding, and sintering. Sintering to compact and increase the strength of metal powders and experience shrinkage (shrinkage). The purpose of this study was to determine the optimal combination of the MIM sintering process for the proportion of shrinkage defects by adding parameters Sn (%), temperature (℃), and holding time (hours). This study used an experimental design with the Taguchi method. The contribution factor obtained that the addition of the Sn parameter did not have a significant effect on the shrinkage of 14.48%, the temperature parameter had a significant effect on the shrinkage proportion of 68.92%, and the holding time parameter did not have a significant effect on the proportion of depreciation with a percentage of 6.27%. From the results, the optimal combination is the addition of Sn at level 3 (2%), the temperature at level 1 (450 ℃), and holding time at level 1 (1 hour).

PENGARUH PANJANG PIPA KATALIS PADA HCS (HYDROCARBON CRACKING SYSTEM) TERHADAP PERFORMA MOTOR BAKAR 4-LANGKAH Danang Yudistiro; Nasrul Ilminnafik; Masruri Wardhana
ELEMEN : JURNAL TEKNIK MESIN Vol 4 No 2 (2017)
Publisher : POLITALA PRESS

HCS (Hydrocarbon Cracking System) merupakan suatu inovasi untuk meningkatkan torsi dan daya bakar. dengan pipa katalis tembaga yang digunakan sebagai alat untuk mempercepat proses cracking bahan bakar yang masuk pada ruang bakar. Penelitian ini bertujuan u ntuk memperoleh data perbandingan unjuk kerja motor bakar 4 langkah dengan variasi panjang pipa katalis dengan kondisi standarts sebagai pembanding.dalam penelitian dilakukan dengan pengujian yaitu torsi. Dari hasil penelitian yang dilakukan Daya maksimal motor terjadi pada kondisi tanpa katalis dengan nilai 11.9 Hp pada putaran mesin 9552 rpm, sedangkan dengan penambahan daya mengalami penurunan karena bahan bakar yang masuk pada ruang bahan tidak sepenuhnya berbentuk cair sehingga penurunan efisiensi vo lumetrik juga disebabkan karena volume bahan bakar yang dibutuhkan lebih besar dalam campuran asupan. Nilai torsi mengalami peningkatan dengan penggunaan pipa katalis, torsi teringgi terjadi pada kondisi pipa katalis dengan panjang 200 mm dengan torsi sebesar 9,32 Nm pada RPM 3040. Untuk katalis dengan panjang 150 mm dan 100 mm nilai torsi yang didapat adalah 9,23 Nm dan 9,16 Nm, sedangakan pada kondisi standart torsi hanya 9,13 Nm. Proses cracking akan terjadi pemecahan molekul - molekul senyawa hidrokarbon yang besar menjadi molekul - molekul senyawa yang lebih kecil, sehingga adanya proses craking tersebut membuat campuran bahan bakar dan udara menjadi lebih ideal dan mudah terbakar pada ruang bakar. Dengan komposisi bahan bakar yang ideal akan meningkatkan pembakaran dan nilai torsi maksimum

PENGARUH PARAMETER BARREL TEMPERATURE, BLOWING TIME DAN BLOWING PRESSURE TERHADAP VOLUME PRODUK BOTOL Muhammad Bagus Amirullah; Danang Yudistiro
ELEMEN : JURNAL TEKNIK MESIN Vol 6 No 2 (2019)
Publisher : POLITALA PRESS

Plastik mulai banyak diminati di kalangan masyarakat. Penyebabnya adalah faktor kebutuhan akan penggunaan plastik, serta adanya kemajuan teknologi manufaktur dari material itu sendiri. Dalam hal ini industri plastik harus terus meningkatkan produksinya baik dalam hal kualitas maupun kuantitas. Untuk menghasilkan produk plastik yang berkualitas ada beberapa mesin yang digunakan. Pada penelitian ini mesin yang digunakan adalah mesin blow molding BM 01, yang bertujuan untuk menghasilkan produk botol 215 ml. Selain itu untuk menghasilkan produk botol 215 ml, hal yang perlu diperhatikan adalah bagaimana setting parameter barrel temperature, blowing time dan blowing pressure untuk menghasilkan volume yang optimum yaitu sesuai target. Tahap pengolahan data menggunakan metode respon permukaan, dengan tujuan mempermudah mendapatkan nilai optimal dari masing-masing parameter yang diduga berpengaruh dalam hasil produksi. Hasil penelitian menunjukkan variabel yang sangat berpengaruh terhadap volume botol adalah barrel temperature dengan koefisien regresi penduga bernilai positif sebesar 5,000, Sedangkan pengaruh terkecil adalah pada blowing time dengan koefisien regresi penduga sebesar 0,167. Untuk mencapai volume sesuai target yaitu 215 ml, dibutuhkan parameter blowing pressure sebesar 6,0 bar, blowing time sebesar 6,0 s dan barrel temperature sebesar 206oC.

Effect of Pitch Thread Combination of Dental Implant on Fatigue Safety and Life Performance Danang Yudistiro; Yung-Chang Cheng
Proceeding of International Conference on Science, Health, And Technology 2021: Proceeding of the 2nd International Conference Health, Science And Technology (ICOHETECH)
Publisher : LPPM Universitas Duta Bangsa Surakarta

During the implant procedure, one factor determining the surgery's success is the dental implant's stability. The stability index includes fatigue safety and life performance. A dental implant's thread pitch has been regarded as the essential factor for fatigue safety in many studies. However, the effect of the mixed thread pitch on fatigue safety and life performance are rarely investigated. Therefore, this study examines the impact of thread pitch on implants on the fatigue safety factor and dental implants' life. Four types of implants were studied: (0.5mm Pitch, 0.8mm Pitch, Combination Pitch (0.8mm with upper 0.5mm and 0.8mm with lower 0.5 mm). The material of a dental implant used in this study is Ti6al4v. According to ISO standard 14801, the fatigue safety factor is presented and compared using ANSYS/Workbench software. The results show that the combination pitch (0.8mm with upper Pitch 0.5 mm) has the highest life and safety factors.

Effect of Temperature, Holding Time, and Addition of Sn on Density on Metal Injection Molding Sintering Process Wardatul Jannah; Danang Yudistiro; Mochamad Asrofi; Mahros Darsin; Ahmad Rendi Maulana
Journal of Engineering and Technological Sciences Vol. 55 No. 2 (2023)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2023.55.2.4

Metal injection molding (MIM) is a metal forming technique that combines powder metallurgy with plastic injection molding. MIM is very efficient in manufacturing small and complex products in large quantities. The MIM process has four steps: mixing, debinding, injection molding, and sintering. This research was conducted to determine the effect of variations in Sn addition, temperature, and holding time on the density of Al-PP products after the sintering process. Density is mass per volume so to find out the volume of Al-PP products, the use of a 3D scanner was attempted along with the EinScan application and a mesh mixer. The Taguchi method was used for data processing to determine the influence of variations in Sn addition, temperature, and holding time on density. The calculation of the percentage contribution showed that variations in Sn addition, temperature, and holding time affected density by 47%, 21%, and 3%. Also, 2% Sn addition yielded a reasonably good microstructure formation compared to without Sn addition and 1% Sn addition, where many voids remained in the specimen (the more significant the voids, the lower the density).

OPTIMASI PARAMETER PEMESINAN BUBUT DENGAN VARIASI MEDIA PENDINGIN DAN KECEPATAN SPINDEL TERHADAP KEKASARAN PERMUKAAN BAJA AISI 1045 Pratama, Aly Wafa; Djumhariyanto, Dwi; Trifiananto, Muhammad; Yudistiro, Danang; Arbiantara, Hari; Ilminafik, Nasrul
STATOR: Jurnal Ilmiah Teknik Mesin Vol 6 No 2 (2023): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

The machining process is a process used in the manufacturing industry, the machining process itself has become an important part of the manufacturing industry since the industrial revolution era. In the machining process that is widely used to produce cylindrical products, namely the lathe process. One of the main factors of the quality of processed materials is surface roughness. MQL is a method of providing coolant in the industry which has the function of lowering temperature and reducing friction between the tool and the workpiece. The problem that often occurs in the industrial world, especially manufacturing in the turning process, is the mismatch of the surface roughness of the turning results. Where one of the causes of the roughness results to be inappropriate is the machining parameters that are not adjusted and the high temperature of the workpiece that rubs against the tool during the turning process. Therefore, it is necessary to optimize the machining parameters and coolant used in order to obtain efficient machining parameters and coolant that produces low roughness. The purpose of this study was to determine the effect of variations in the spindle speed parameter and the composition of the coolant mixture, namely clogged oil, dromus and water on the surface roughness value of AISI 1045 steel. From the experiments conducted it was stated that the optimum level of each parameter for surface roughness was level 3 spindle speed 585 rpm and level 3 composition of the coolant mixture 30% clogged oil : 20 dromus : 50% water. The parameter that has a significant effect on the value of surface roughness is the spindle speed.

Implementation of Internet of Things (IoT) in a Plastic Blow Moulding Machine and Its Performance Measurement Faqih, Muhammad Fadhlurrohman; Darsin, Mahros; iMuttaqin, Aris Zainul; Yudistiro, Danang
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 2 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v5i22021p096

Efficiency and effectiveness are indispensable things in the production process. Accurate use of existing resources and the shorter cycle time of production are of particular concern to optimize the production process. This research aims to implement automation to a conventional blow molding. An advanced attempt was carried out to use the Internet of Things (IoT) to increase its efficiency while maintaining the quality of the products. The use of the nodeMCU microcontroller and the blynk application allows the operator to operate the machine without having to come into or having direct contact with the machine. The performance of automation and IoT were tested by examining the products using Taguchi design using quality criteria of nominal the best. The efficiency of the system was also considered by comparing the cycle production time. S/N ratio of Taguchi analysis showed that the optimum volume of the bottle would be achieved when applying the temperature, injection time, and holding time of 190 oC, 14 minutes, and 5 minutes respectively. The error or deviation is only 0.41%. The application of the IoT system takes 34.45 seconds for a cycle time production, which is 3.76 seconds faster than a conventional system.

Analysis of Avgas Fuel Spraying Schemes Using the ANSYS Application Approach Putra, Dimas Endrawan; Ilminnafik, Nasrul; Hentihu, M Fahrur Rozy; Kustanto, Muh. Nurkoyim; Yudistiro, Danang; Syuhri, Skriptyan N.H.
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 8, No 1 (2024)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v8i12024p071

Avgas fuel consumption on Cessna trainer aircraft is very high. However, there has been little research regarding spray impacts in Cessna aircraft engines. The phenomenon of avgas spray colliding with the cylinder wall may occur during fuel injection, resulting in a changed spray radius and height, which will affect the mixing of fuel and air. In several aspects, this affects engine performance and exhaust emissions on Cessna aircraft. This research aims to determine and study the phenomenon of spray impact on avgas-fueled aircraft engines. The fuel spray in the study occurred in the combustion chamber using pressure from a fuel hand pump whose pressure was supplied from a compressor with a pressure adjusted to the original pressure on the aircraft, namely 2 Bar (30 Psi). The experiments in this research used a high-speed camera system to study the phenomenon of avgas spray on walls to get better spray distribution. The results of this research were processed using the CFD application. The result of this research is that the greater the pressure, the more concentrated the resulting jet will be on the jet wall so that the atomization of the fuel jet will be dispersed. When the burst occurs, a change of 3.80e+00 occurs compared to other burst pressures.

Heat Treatment and Its Effect on Tensile Strength of Fused Deposition Modeling 3D-Printed Titanium-Polylactic Acid (PLA) Darsin, Mahros; Susanti, Rizqa Putri; Sumarji, Sumarji; Ramadhan, Mochamad Edoward; Sidartawan, Robertus; Yudistiro, Danang; Basuki, Hari Arbiantara; Wibowo, Robertoes Koekoeh Koentjoro; Djumhariyanto, Dwi
ComTech: Computer, Mathematics and Engineering Applications Vol. 15 No. 2 (2024): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v15i2.11255

Titanium is a biocompatible metal commonly applied in biomedical fields such as bone and dental implants. Recently, the produced titanium-Polylactic Acid (PLA) filament for 3D printing Fused Deposition Modeling (FDM) technique is easier to operate and affordable. This filament contains less than 20% PLA, which is also biocompatible but hydrophobic and capable of producing inflammation of the surrounding artificial living tissue. Therefore, a heat treatment is needed to reduce or even eliminate PLA. The research aimed to optimize the mechanical properties and biocompatibility of titanium-PLA filaments through heat treatment, demonstrating significant advancements in 3D printing applications for biocompatible materials. A Thermogravimetric Analysis (TGA) was carried out to find out the right temperature for reducing PLA levels. Specimens were heat treated with four temperatures at 100oC, 160oC, 190oC, and 543oC, and two holding times of 60 and 120 minutes. The mass of the specimens was weighed before and after heat treatment to determine the mass reduction and tested for tensile, micrograph, and fractography observation. The result is a meagre mass reduction. The highest tensile strength of the heat-treated specimen with a heat treatment temperature of 160oC and a holding time of 60 minutes is 18.310 MPa. However, it is still below the strength of the non-heat treated specimen, 19.890 MPa. Specimens with low tensile strength have a microstructure that shows an uneven distribution of titanium particles. Last, fractography shows porosity in the specimens with the lowest tensile strength.

Co-Authors Ahmad Rendi Maulana Ahmad Rendi Maulana Ahmad Syuhri Aris Zainul Muttaqin Dwi Djumhariyanto Elhamzah, Denaldy Elza Setya Faqih, Muhammad Fadhlurrohman Hari Arbiantara Basuki Hari Arbiantara, Hari Hary Sutjahjono Ilminafik, Nasrul Kustanto Muh. Nurkoyim Kustanto, Muh. Nurkoyim M. Fahrur Rozy Hentihu Mahros Darsin Masruri Wardhana Mochamad Asrofi Mochamad Edoward Ramadhan Mochamad Edoward Ramadhan Muhammad Bagus Amirullah Muhammad Trifiananto Nasrul Ilminnafik Noor HS, Skriptyan Pratama, Aly Wafa Putra Dimas Endrawan Putra, Dimas Endrawan Rizal, Ahmad Ayyub Syaiful Robertus Sidartawan Rossy, Rio Martha Febriana Rozy H, M Fahrur Sains Ilham Akbar Salmansyah, Dathantara Saputra, Dheo Ardi Nugraha Sumarji Suryataba, Sudrajat Tri Susanti, Rizqa Putri Syahriza, Mochamad Rifki Syuhri, Skriptyan N.H. Wardatul Jannah Wibowo, Robertoes Koekoeh Koentjoro Yahya, Hafiz Indratma Yung-Chang Cheng

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