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Papers by Mahros Darsin

Research paper thumbnail of Analysis of the effect 3D printing parameters on tensile strength using Copper-PLA filament

Research paper thumbnail of Unjuk Kerja Kolektor Tabung Pemanas Air Pada Saat Charging Menggunakan Phase Change Material (PCM) Dengan Dan Tanpa Reflektor

Multitek Indonesia: Jurnal Ilmiah, Jul 1, 2020

Research paper thumbnail of Optimization of the structure of bionic finger segment prosthesis using generative design

F1000Research, Jun 6, 2022

Research paper thumbnail of Perubahan Nilai Kekerasan Dan Struktur Mikro Baja Aisi H13 Akibat Variasi Arus Pada Proses Electrical Discharge Machining (Edm) Sinking Menggunakan Elektroda Grafit

Research paper thumbnail of Pengaruh Metode Minimum Quantity Lubrication (MQL) Terhadap Nilai Kekasaran Permukaan

Rekayasa: Jurnal Ilmiah Ilmu-Ilmu Eksakta dan Teknologi, Aug 1, 2020

Research paper thumbnail of Flexural properties of metal 3D printing products using PLA-stainless steel filament

Nucleation and Atmospheric Aerosols, 2023

3D printing is a technology that can print an object from a digital file namely computer-aided dr... more 3D printing is a technology that can print an object from a digital file namely computer-aided drawing (CAD), into a real physically object having volume and mass. Currently, some metal-plastic mixed filaments available in the market place as the fed for the FDM 3D printing, one of which is composed of steel and PLA, called as eSteel. Therefore, it needs to research the mechanical properties of their printed products. This research aims to explore the flexural strength printed products using eSteel. Experiments were design based on Taguchi orthogonal array L4 (2 3). Three control parameters its levels are: extruder temperature (220 o C, 225 o C), layer height (0.3 mm, 0.4 mm), and raster angle (0 o /90 o , 45 o /45 o) are. The specimens are in form of the bending test ASTM D790. Each combination replicated five times using 3D printing machine HE3D K200. S/N ratio analysis and Analysis of variance (ANOVA) revealed that the raster angle had the most important influence on the flexural strength of the product with a contribution of 43.22%, followed by layer height and extruder temperature with a contribution of 24.08% and 12.6%, respectively. S/N ratio analysis proofed that the combination of control parameters to the maximum flexural strength of 39.54 MPa when combining parameters of extruder temperature 220 o C, layer height 0.4 mm, and raster angle 0 o /90 o .

Research paper thumbnail of Effect of Variation of SiC Mass Fraction on Mechanical Properties of Al-SiC Composite Using Stir Casting Method

Journal of Mechanical Engineering Science and Technology (JMEST), Jul 19, 2022

Research paper thumbnail of Optimizing the Surface Roughness AISI 4340 Steel on Turning Process under Minimum Quantity Lubrication (MQL)

Materials Science Forum, Mar 31, 2022

Application of cutting fluids in machining can improve machinability but it may danger to the env... more Application of cutting fluids in machining can improve machinability but it may danger to the environment. An alternative to reduce this bad effect is by using minimum quantity lubrication (MQL). This study aims to determine the most optimal parameters in the AISI 4340 steel turning machining process to produce the best surface roughness with MQL conditions. The design method used is the Taguchi orthogonal array L9 ). The combined parameters are depth of cut, cutting speed, method of giving cutting fluid and feed rate. Based on the mean response value, it can be concluded that to get the most optimal results of surface roughness, the parameters are depth of cut 1.8 mm, cutting speed 120.89 m/min, method of giving cutting fluid by MQL method and feed rate 0.122 mm/rev. While the percentage contribution of the feed rate has the largest percentage, namely 57,02% and the cutting fluid method 41,33%.

Research paper thumbnail of Implementation of Internet of Things (IoT) in a Plastic Blow Moulding Machine and Its Performance Measurement

Journal of Mechanical Engineering Science and Technology (JMEST), Nov 25, 2021

Research paper thumbnail of Analisis Ketebalan Lapisan pada Pengecatan Baja Karbon Rendah menggunakan Metode Respons Permukaan

Sintek Jurnal: Jurnal Ilmiah Teknik Mesin, Dec 1, 2019

Research paper thumbnail of Pembuatan Alat Peraga Motor Bakar 4-LANGKAH Untuk Mendukung Pembelajaran Sistem KBK

Research paper thumbnail of Performance of TiAlN PVD Coated Carbide Drill when Drilling Titanium 6246 Alloy

MATEC web of conferences, 2017

Research paper thumbnail of Effect of particle size on ignition and oxidation of single aluminum: molecular dynamics study

Eureka: Physics and Engineering, May 25, 2023

Research paper thumbnail of Development Machining of Titanium Alloys: A Review

Applied Mechanics and Materials, 2014

Titanium and its alloys are hard materials, wear resistant, high strength to weight ratio. Theref... more Titanium and its alloys are hard materials, wear resistant, high strength to weight ratio. Therefore this material become very promising, especially in aerospace application. However, its application restrict when face machining processes. This material is very hard which is very difficult to manufacture by machining. Its low Youngs modulus tends to springy and creates vibration or chatter. Moreover, it has low heat dissipation rate that make the heat concentrate in the tool tip especially in the friction surface between tool and chip. Those phenomena result in very low tool life and low quality of machined surface, in term of surface roughness, surface integrity. This article describes some efforts to overcome those problems. Categorically, there are some groups of effort, i.e. varying machining parameters, modification the tool, treatment of the material, and different method of applying the coolant. It seems that using cryogenic cooling upon the tool is the most promising new technology to machine the titanium alloy.

Research paper thumbnail of Drillability of Titanium Alloy 6246 from Surface Quality Perspective

Material Science Research India, Apr 20, 2019

Research paper thumbnail of Forces Perspective of Drillability of Titanium Alloy 6Al-2Sn-4Zr-6Mo

JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering), Jun 30, 2018

Research paper thumbnail of Finite element analysis on e-bike frame model with composite material variations

Nucleation and Atmospheric Aerosols, 2023

Multi-item time series prediction using autoregressive integrated moving average and long short t... more Multi-item time series prediction using autoregressive integrated moving average and long short term memory on perishable products

Research paper thumbnail of Upaya mengatasi cacat produksi botol kemasan air 600 ml dengan metode Statistical Process Control

Jurnal litbang industri, Dec 28, 2020

Research paper thumbnail of Pengaruh Parameter Spray Gun Terhadap Kekilapan Pada Pelapisan Baja Karbon Rendah (ST37)

Rotor: jurnal ilmiah teknik mesin, Sep 5, 2020

Research paper thumbnail of Optimasi Kekuatan Tarik Proses Electroplating SS400 Menggunakan Metode Taguchi

Jurnal Riset Teknologi Industri, Jun 17, 2020

Research paper thumbnail of Analysis of the effect 3D printing parameters on tensile strength using Copper-PLA filament

Research paper thumbnail of Unjuk Kerja Kolektor Tabung Pemanas Air Pada Saat Charging Menggunakan Phase Change Material (PCM) Dengan Dan Tanpa Reflektor

Multitek Indonesia: Jurnal Ilmiah, Jul 1, 2020

Research paper thumbnail of Optimization of the structure of bionic finger segment prosthesis using generative design

F1000Research, Jun 6, 2022

Research paper thumbnail of Perubahan Nilai Kekerasan Dan Struktur Mikro Baja Aisi H13 Akibat Variasi Arus Pada Proses Electrical Discharge Machining (Edm) Sinking Menggunakan Elektroda Grafit

Research paper thumbnail of Pengaruh Metode Minimum Quantity Lubrication (MQL) Terhadap Nilai Kekasaran Permukaan

Rekayasa: Jurnal Ilmiah Ilmu-Ilmu Eksakta dan Teknologi, Aug 1, 2020

Research paper thumbnail of Flexural properties of metal 3D printing products using PLA-stainless steel filament

Nucleation and Atmospheric Aerosols, 2023

3D printing is a technology that can print an object from a digital file namely computer-aided dr... more 3D printing is a technology that can print an object from a digital file namely computer-aided drawing (CAD), into a real physically object having volume and mass. Currently, some metal-plastic mixed filaments available in the market place as the fed for the FDM 3D printing, one of which is composed of steel and PLA, called as eSteel. Therefore, it needs to research the mechanical properties of their printed products. This research aims to explore the flexural strength printed products using eSteel. Experiments were design based on Taguchi orthogonal array L4 (2 3). Three control parameters its levels are: extruder temperature (220 o C, 225 o C), layer height (0.3 mm, 0.4 mm), and raster angle (0 o /90 o , 45 o /45 o) are. The specimens are in form of the bending test ASTM D790. Each combination replicated five times using 3D printing machine HE3D K200. S/N ratio analysis and Analysis of variance (ANOVA) revealed that the raster angle had the most important influence on the flexural strength of the product with a contribution of 43.22%, followed by layer height and extruder temperature with a contribution of 24.08% and 12.6%, respectively. S/N ratio analysis proofed that the combination of control parameters to the maximum flexural strength of 39.54 MPa when combining parameters of extruder temperature 220 o C, layer height 0.4 mm, and raster angle 0 o /90 o .

Research paper thumbnail of Effect of Variation of SiC Mass Fraction on Mechanical Properties of Al-SiC Composite Using Stir Casting Method

Journal of Mechanical Engineering Science and Technology (JMEST), Jul 19, 2022

Research paper thumbnail of Optimizing the Surface Roughness AISI 4340 Steel on Turning Process under Minimum Quantity Lubrication (MQL)

Materials Science Forum, Mar 31, 2022

Application of cutting fluids in machining can improve machinability but it may danger to the env... more Application of cutting fluids in machining can improve machinability but it may danger to the environment. An alternative to reduce this bad effect is by using minimum quantity lubrication (MQL). This study aims to determine the most optimal parameters in the AISI 4340 steel turning machining process to produce the best surface roughness with MQL conditions. The design method used is the Taguchi orthogonal array L9 ). The combined parameters are depth of cut, cutting speed, method of giving cutting fluid and feed rate. Based on the mean response value, it can be concluded that to get the most optimal results of surface roughness, the parameters are depth of cut 1.8 mm, cutting speed 120.89 m/min, method of giving cutting fluid by MQL method and feed rate 0.122 mm/rev. While the percentage contribution of the feed rate has the largest percentage, namely 57,02% and the cutting fluid method 41,33%.

Research paper thumbnail of Implementation of Internet of Things (IoT) in a Plastic Blow Moulding Machine and Its Performance Measurement

Journal of Mechanical Engineering Science and Technology (JMEST), Nov 25, 2021

Research paper thumbnail of Analisis Ketebalan Lapisan pada Pengecatan Baja Karbon Rendah menggunakan Metode Respons Permukaan

Sintek Jurnal: Jurnal Ilmiah Teknik Mesin, Dec 1, 2019

Research paper thumbnail of Pembuatan Alat Peraga Motor Bakar 4-LANGKAH Untuk Mendukung Pembelajaran Sistem KBK

Research paper thumbnail of Performance of TiAlN PVD Coated Carbide Drill when Drilling Titanium 6246 Alloy

MATEC web of conferences, 2017

Research paper thumbnail of Effect of particle size on ignition and oxidation of single aluminum: molecular dynamics study

Eureka: Physics and Engineering, May 25, 2023

Research paper thumbnail of Development Machining of Titanium Alloys: A Review

Applied Mechanics and Materials, 2014

Titanium and its alloys are hard materials, wear resistant, high strength to weight ratio. Theref... more Titanium and its alloys are hard materials, wear resistant, high strength to weight ratio. Therefore this material become very promising, especially in aerospace application. However, its application restrict when face machining processes. This material is very hard which is very difficult to manufacture by machining. Its low Youngs modulus tends to springy and creates vibration or chatter. Moreover, it has low heat dissipation rate that make the heat concentrate in the tool tip especially in the friction surface between tool and chip. Those phenomena result in very low tool life and low quality of machined surface, in term of surface roughness, surface integrity. This article describes some efforts to overcome those problems. Categorically, there are some groups of effort, i.e. varying machining parameters, modification the tool, treatment of the material, and different method of applying the coolant. It seems that using cryogenic cooling upon the tool is the most promising new technology to machine the titanium alloy.

Research paper thumbnail of Drillability of Titanium Alloy 6246 from Surface Quality Perspective

Material Science Research India, Apr 20, 2019

Research paper thumbnail of Forces Perspective of Drillability of Titanium Alloy 6Al-2Sn-4Zr-6Mo

JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering), Jun 30, 2018

Research paper thumbnail of Finite element analysis on e-bike frame model with composite material variations

Nucleation and Atmospheric Aerosols, 2023

Multi-item time series prediction using autoregressive integrated moving average and long short t... more Multi-item time series prediction using autoregressive integrated moving average and long short term memory on perishable products

Research paper thumbnail of Upaya mengatasi cacat produksi botol kemasan air 600 ml dengan metode Statistical Process Control

Jurnal litbang industri, Dec 28, 2020

Research paper thumbnail of Pengaruh Parameter Spray Gun Terhadap Kekilapan Pada Pelapisan Baja Karbon Rendah (ST37)

Rotor: jurnal ilmiah teknik mesin, Sep 5, 2020

Research paper thumbnail of Optimasi Kekuatan Tarik Proses Electroplating SS400 Menggunakan Metode Taguchi

Jurnal Riset Teknologi Industri, Jun 17, 2020

Research paper thumbnail of Desain dan Pengembangan Mesin Pengolah Krupuk Singkong untuk Meningkatkan Nilai Tambah Produk Olahan Singkong di Kabupaten Banyuwangi

“Peningkatan Daya Saing Hasil Pertanian Menuju Revolusi Industri 4.0”, 2020

This activity aims to help the small industry community who make cassava crackers who experience... more This activity aims to help the small industry community who
make cassava crackers who experience a lack of knowledge on production
technology, market expansion and bookkeeping management. To solve the
partner problem, it is necessary to make a pressing machine, drying rack
and cassava cracker dough cutting machine whose structure can be made
easily and cheaply for the benefit of cassava cracker crafter and can be
operated simply. A pressing machine with a power source from a hydraulic
machine and a dough cutting machine with power from a 1/2 HP electric
motor, but has the ability to press, dry and cut cracker dough. In the
krupuk craftsman environment, the pressing and chopping processes of
cassava crackers are still done manually with a low / low capacity,
requiring a lot of energy, relatively long time and unhygienic. From this
activity it is targeted that: the manufacture of pressing machines and
cracker dough cutting machines can solve the main problems faced by the
group of cracker craftsmen in Tegalsari sub-district, Banyuwangi district.
The results from the press machine with a moisture content of less than
18% and the results from this cracker dough cutting machine produce a
uniform size with a thickness with a uniform size of 2-3 mm. Thus the
demand for the need for cassava crackers will continue to flow so that it
will increase people's income and will absorb new workers.

Research paper thumbnail of Drillability of Titanium 6246 Alloy

Proceeding of Processing and Fabrication of Advanced Materials XXV, 2017

This article describes the chips formation during drilling of Ti-6246 titanium alloy using TiAlN ... more This article describes the chips formation during drilling of Ti-6246 titanium alloy using TiAlN coating carbide insert drill. At the early stage of drilling, the chips had a conical spiral shapes regardless the parameters used and heat treatment conditions. However, as the depth increases different types of chips were observed depending on the parameters used. Drilling with high feed rates, lower cutting speed and with coolant resulted in segmented-type. On the contrary, low feed rate and high cutting speed result in long-curly chips. Furthermore, when the depth of drilling was around 10 mm or deeper, a zigzag form of chips was observed regardless the machining parameters applied. Though the chips forms were different, cross sectional observation using optical microscopy and scanning electron microscopy shows that all the chips had a serrated type. These chips experienced microstructural elongation at the shear band area. Micro Vickers hardness tests showed that the hardness of the chips was higher compared to the hardness of the original material prior to drilling.