Garuda - Garba Rujukan Digital

p-Index From 2020 - 2025

6.615

P-Index

This Author published in this journals

All Journal Teknologi dan Kejuruan: Jurnal teknologi, Kejuruan dan Pengajarannya Transmisi TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Journal of Mechanical Engineering Science and Technology Journal of Accounting and Management Innovation Turbo : Jurnal Program Studi Teknik Mesin SEIKO : Journal of Management & Business Jurnal Kreativitas PKM Manuju : Malahayati Nursing Journal Almufida: Jurnal Ilmu-Ilmu Keislaman International Journal of Recent Technology and Applied Science (IJORTAS) Indonesian Journal for Social Responsibility Jurnal Pengabdian, Pendidikan dan Teknologi Journal of Industrial Engineering & Management Research (JIEMAR) Jurnal Perak Malahayati : Pengabdian Kepada Masyarakat Andalasian International Journal of Applied Science, Engineering, and Technology Journal of Accounting and Management Innovation Bengkoelen Justice : Jurnal Ilmu Hukum Proceeding International Seminar of Islamic Studies Mechanical Engineering for Society and Industry Automotive Experiences Jurnal Bangun Manajemen Journal of Public Health Concerns Barongko : Jurnal Ilmu Kesehatan JOURNAL OF Qualitative Health Research & Case Studies Reports JOURNAL OF Mother and Child Health Concerns JOURNAL OF Mental Health Concerns International Journal Of Synergi In Law, Criminal And Justice Jurnal Ekonomi, Manajemen, Akuntansi NMI THE JOURNAL OF Nursing Management Issues Midwifery Journal

Andoko Andoko, Andoko

Universitas Negeri Malang

Author-ID : 526610

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy 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 Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

Published : 56 Documents Claim Missing Document

Claim Missing Document

Articles

Title

Formula of Moulding Sand, Bentonite and Portland Cement toImprove The Quality of Al-Si Cast Alloy Andoko Andoko; Poppy Puspitasari; Avita Ayu Permanasari; Didin Zakaria Lubis
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 1, No 2 (2017)
Publisher : Universitas Negeri Malang

A binder is any material used to strengthen the bonding of moulding sand grains. The primary function of the binder is to hold the moulding sand and other materialstogether to produce high-quality casts. In this study, there were four binder compositions being tested, i.e. 5% bentonite + 5% Portland cement, 4% bentonite + 6% Portland cement, 6% bentonite + 4% Portland cement, and 7% bentonite + 3% Portland cement. Each specimen was measured for its compressive strength, shear strength, tensile strength and permeability. The highest compressive strength was obtained fromthe specimen composed of 6% bentonite+ 4% Portland cement. The highest shear strength was obtained from the moulding sand with 7% bentonite+ 3%Portland cement. The highest tensile strength was obtained fromthe specimen contained 5% bentonite+ 5% Portland cement. The specimen composed of 5% bentonite + 5% Portland cement had the lowest permeability of 131 ml/min, while that of 6% bentonite + 4% Portland cement had the highest permeability of 176 ml/min.

Properties of Brass under Different Pouring Temperatures in Sand Casting Process Poppy Puspitasari; Avita Ayu Permanasari; Andoko Andoko; Bayu Angga Pratama
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 1, No 2 (2017)
Publisher : Universitas Negeri Malang

This study aimed to determine the toughness of casts produced by the sand casting process at various temperatures against brass, and to investigate the structure contained in the cast madeusing abrass metal mould. This study was experimental research that observed the results of a treatment applied to a specimen group. This pre-experimental study usedthe one-shot case study model in which a group of samples was given treatment. The results showed that the specimen poured at 900°C exhibiteda microstructure consisting ofgood Cu-Zn content, while that at 700°Chad the least Cu content. It indicates that the higher the temperature used for metal casting (brass), the more brittle the cast. The toughness of the materialwas influenced by the alloy composition and the pouring temperature of each specimen; the higher the pouring temperature, the better the treatment of alloy. The photomicrographs indicate that the higher the pouring temperature usedin the metal casting (brass), the lesser the carbon element contained in the material.

The Strength of Moulding Sand Consisting of a Mixture of Bentonite, Tapioca Flour, and Sago Flour as a New Binder Formula to Improve the Quality of Al-Si Cast Alloy Andoko Andoko; Riana Nurmalasari; M. Alfian Mizar; Retno Wulandari; Poppy Puspitasari; Avita Ayu Permanasari
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 1, No 1 (2017)
Publisher : Universitas Negeri Malang

The major factors determining the quality of sand casting products are the base sand and the composition of the sand mould and the binding material. In the foundry industry, the most commonly used binder for creating sand moulds is bentonite. However, the price of bentonite is likely to keep rising. This study aimed at discovering a new binder formula associated with the effect of binder composition i.e. bentonite, tapioca flour, and sago flour on the basis of its mechanical and physical properties. The new formula was expected to be a better binder in the production of sand moulds, resulting in high-quality casting products with minimal defects. Moreover, it is probable to be much more economical than bentonite. This research focused on testing the moulding sand composition with a number of different binders, i.e. bentonite, tapioca flour, and sago flour, each in a different proportion. The mixture of the moulding sand with each of the three binders will be tested in terms of its mechanical properties including compressive, shear, and tensile strength. Based on the test results, sago flour has the highest dry compressive strength of 28.6 N/cm2, whereas bentonite has the highest wet compressive strength, i.e. 11.83 N/cm2 and the highest wet shear strength i.e. 3.16 N/cm2. The binder with the highest dry shear strength is tapioca flour with 18.16 N/cm2. Regarding the tensile strength value, bentonite has the highest wet tensile strength of 0.85 N/cm2, while sago flour has the highest dry tensile strength of 1.73 N/cm2.

Analysis of Strength of Glass Fibre Composite Leaf Spring Using Finite Element Method Andoko Andoko; Poppy Puspitasari; Avita Ayu Permanasari
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 1, No 1 (2017)
Publisher : Universitas Negeri Malang

Leaf spring, as one of the main components of the suspension system, serves the function of absorbing road shocks and any wheel vibrations, preventing them from being transmitted directly to the vehicle body. Moreover, it can increase the tire traction as well as support the weight of the vehicle and various kinds of external forces. Various studies on the use of composite materials for leaf springs have shown that the strength of composite leaf spring is similar to steel leaf spring with the same load carrying capacity. However, the composite leaf spring has the added advantage of being more lightweight. In fact, composite materials have been preferable for many purposes not only because of its properties but also its lightweight structure and cost effectiveness. The analysis process was carried out using the finite element method by means of ANSYS software to display the output of the analysis being performed. After the output is known, the amount of voltage in conventional, mounted, and progressive spring can be determined. Based on the data analysis, we concluded that conventional straight leaf springs produced a maximum voltage of 653.13 MPa and maximum deflection of 4367.1 mm. The results of the analysis using the finite element method showed that conventional leaf springs (both straight and not) are considered as the most effective model of leaf spring in terms of the power generated.

Elastic Linear Analysis of Connecting Rods for Single Cylinder Four Stroke Petrol Engines Using Finite Element Method Didin Zakariya Lubis; Andoko Andoko
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 3, No 1 (2019)
Publisher : Universitas Negeri Malang

A connecting rod is one of the most critical parts in engine assembly which transfers energy from the piston to the crankshaft. The connecting rod mainly undergoes tensile and compressive loading under engine cyclic process. The forces acting on the connecting rod are forces due to maximum combustion pressure and forces due to the inertia of the connecting rod. This research aimed to analyze the design of the connecting rod of single-cylinder four-stroke engines. This study used CAD software for modeling and structural design. Stresses generated across all the locations of the connecting rod were evaluated using FEA Software. Elastic linear analysis of model design was also performed. The simulation results in this study have led to the conclusion that failure occurred due to the incorrect selection of materials. Among all materials under study, AA 6061 is considered the most suitable material for use at high RPM. In fact, aluminum is preferable for use at high RPM.

Camshaft Failure Simulation with Static Structural Approach Riduwan Prasetya; Andoko Andoko; Suprayitno Suprayitno
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 1 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v5i12021p047

A failure happens within the camshaft of the minibus when the vehicle is in utilize. The camshaft was a fracture within the bearing between the primary cylinder exhaust valve and the second cylinder suction. This simulation aims to find the causes of camshaft failure utilizing the finite element method with a static structural approach, including simulations of deformation, strain, stress, fatigue life (stress-life and strain-life), and cracks. The method used in this paper is the finite element method with a static structural approach by ANSYS software. The camshaft material is a gray cast iron designed using Solidworks. Pre-processing includes meshing with a size of 3 mm. The value of loading force (1348.28 N) and torque (113400 Nmm) are fixed, and the boundary conditions are varied. Processing includes the process of computation and post-processing into a part that displays the results. The simulation results show that for all the deformation and strain values that are in the elasticity area of the material, the maximum and minimum stress which is below the strength of the material, the location of the maximum values of deformation, strain, and stress is not at the fault location. The simulation of fatigue life both in stress-life and strain-life results in infinite cycles, which is above 106 cycles, while the simulation of cracks results in a decrease in the cycle. Based on the simulation results with the above parameters to the camshaft, it was found that a failure was caused by a defect characterized by reduced fatigue life at the same loading conditions.

The Effect of Cutting Speed of Nitrogen Laser Cutting on the Surface Texture of SUS 304 Plate Pradana, Yanuar Rohmat Aji; Afrianto, Raka; Rahman, Chandra Hairat Abdul; Andoko, Andoko
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 7, No 1 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v7i12023p066

The focus of today’s machining industry is on how to maintain high productivity and low cost achieved by high tool life during the operation. Laser cutting is considered the right solution because it offers cutting speeds of up to 170000 mm/min through a non-contact process regardless of the workpiece material hardness. The aim of this study is to analyze the effect of cutting speed on the surface texture aspects namely surface roughness, kerf shape, and dross height on the stainless steel 304 plate after laser cutting. The nitrogen laser was utilized with the cutting speed of 400, 1700, and 2000 mm /min and the average roughness (Ra) was then measured using a surface roughness tester. On the other hand, the top, middle, and bottom area of the kerf surface as well as the dross height were analyzed by scanning electron microscopy (SEM). The highest Ra value was resulted at cutting speed of 2000 mm/min with 2.965 ± 0.05 μm while the lowest was at 1400 mm/min with 2.522 ± 0.16 μm. In parallel, the Ra was found to be higher when subjected gradually from the top to bottom zone. The kerf surface also proved that the top zone is dominated by the cutting zone, while the middle and bottom zone are characterized by the transition and deformation zone respectively. The width between kerf lines increased when the higher cutting speed was performed. Additionally, the larger dross height was found at the cutting speed of 1400 mm/min with 32.75 ± 5.21 μm and then degraded gradually at the higher cutting speed. The heat input and laser capability in exposing the material thickness are responsible for determining the corresponding surface texture aspects.

Simulation of the Performance of Kevlar Impregnated Shear Thickening Fluid Ballistic Test Results (STF) Ballistic Test Results Prasetya, Riduwan; Andoko, Andoko; Suprayitno, Suprayitno; Wulandari, Retno; Trihutomo, Prihanto; Mishima, Kenji; Janas, Dawid
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/um016v8i12024p054

This study explores the enhancement of Kevlar fabric’s ballistic performance through impregnation with Shear Thickening Fluid (STF) for potential application in soft body armor. The experimental approach often fails to elucidate mechanical phenomena critical for the development of lightweight and high-strength body armor designs. To address this limitation, the finite element method, specifically using ANSYS/LS-DYNA R.13, was employed for a comprehensive analysis. The simulation aimed to evaluate the impact of STF on Kevlar fabric by assessing projectile velocity, force exerted by the projectile onto the fabric, displacement, stress distribution, and fabric failure mechanisms. Kevlar yarn was modeled as a shell element formed into fabric with a sine wave profile, investigating two types of STF: SiO2-PEG200 (S0) and SiO2-PEG200-B4C (S1), differing in maximum viscosities. The addition of STF resulted in increased coefficients of friction on Kevlar, with the highest values observed for the SiO2-PEG200-B4C impregnated fabric ( =0.87 and =0.82). The incorporation of the second STF type (S1) significantly reduced the projectile’s velocity from an initial 200 m/s to 153.2 m/s upon impact. Additionally, the force on the S1 fabric surged to 121,556 N, a threefold increase compared to neat Kevlar. STF's influence was further evidenced by enhanced fabric displacement and more uniform stress distribution upon ballistic impact. The fabric's thickening upon failure indicated STF's ability to enlarge the deformation area, facilitating uniform distribution of ballistic kinetic energy across the impact zone. Notably, the fabric impregnated with the second type of STF, featuring boron carbide (S1), demonstrated superior ballistic performance. This study concludes that STF-impregnated Kevlar fabric, particularly the SiO2-PEG200-B4C variant, not only surpasses the ballistic performance of neat Kevlar but also meets the criteria for NIJ Level IIIA standards, highlighting its potential as a highly effective material for advanced soft body armor designs.

Effect of Current and Pulse-on Time on Material Removal Rate and Surface Roughness of Tungsten Carbide in Electric Discharge Machine Die-sinking Riyanto, Mochammad Deny; Andoko, Andoko; Suryanto, Heru
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 7, No 1 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v7i12023p039

The focus of manufacturing for tungsten carbide applications often demands a smooth surface quality as the result of the Electric Discharge Machine (EDM) die-sinking process, especially in the manufacture of die and mold with tungsten carbide material processed using a die-sinking EDM machine. The purpose of this study is to analyze the effect of electric current and pulse-on time on the Material Removal Rate (MRR) and surface roughness of tungsten carbide. Through the experimental method, the parameters varied, namely electric current 17 A, 20 A, 23 A, and pulse-on time 30 µs, 55 µs, and 80 µs. MRR was calculated through weight loss. Surface roughness was obtained from a surface roughness tester and a Scanning Electron Microscope for surface morphology. The results showed that the highest material removal rate was 1.509 mm3/min at 23 A and 30 µs, and the lowest material removal rate was 0.262 mm3/min at 17 A and 80 µs. The highest surface roughness value was 4.278 µm at 23 A and 80 µs. The lowest surface roughness value was 2.166 µm at 17 A and 30 µs. The tungsten carbide surface topography results are crater, globule, crack, and porous. The greater the current used, the higher the MRR value and surface roughness. Meanwhile, the greater the pulse-on time used, the MRR value decreases, and the surface roughness increases.

Evolution of Residual Stress, Crystal Orientation, and Texture on Preheating Weld Treatment of Low Carbon Steel ASTM A572 Grade 42 Saputro, Suratno Adi; Andoko, Andoko; Puspitasari, Poppy
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/um016v8i12024p015

Preheating is one type of heat treatment on the material prior to starting the welding process by increasing the temperature of the material. It is used to reduce the cooling rate during the welding processes to minimize the risk of residual stress and cracking during welding. Besides the benefits of welding, it also has a negative impact, especially on the integrity of the material, because the heating process at high temperatures will cause residual stress, which will affect the mechanical properties, chemical composition, and microstructure of the material, especially on Heat Affected Zone (HAZ). This study aims to analyze the effect of preheating at a temperature of 200 ºC on the welding for ASTM A572 Grade 42 steel with a thickness of 40mm using the SMAW (Shielded Metal-Arch welding) method. ASTM A572 Grade 42 was used in this study with carbon content of less than 0.25%. Based on the results of measurements and analysis using the XRD method, it was found that preheating resulted in reducing the residual stress on both weld metal and HAZ areas. Preheating treatment also moved the peak diffraction to the right side, which means the heat treatment affected compressive residual stress rather than tensile residual stress. For crystal orientation, area [110] has the highest peak diffraction and highest intensity. This area also was found with smaller size crystal size and higher dislocation and microstrain. While bigger crystal size with lower dislocation and microstrain were found in the area [200]. For texture, the highest density was found in the area [200], while the weaker texture was found in the areas [110] and [211]. The texture was influenced by plastic deformation due to atomic structure and its dislocation.

Co-Authors A.N. Afandi Abdiyar, Muhammad Albin Afrianto, Raka Agung Prabowo Akbar, Muhamad Rizky Amin Hou Aminnudin, Aminnudin Ananto, Rifqi Ryandi Dwi Andi Muadz Palerangi Andreas Syah Pahlevi Ari Ambrianti Arifin Arifin Aripriharta - Aryanti Aryanti Aryanti Wardiyah, Aryanti Avita Ayu Permanasari Azhali Siregar Azzahra, Putri Salsabila Bayu Angga Pratama Cahyono, Yanuar Reza Trie Darmawan, Muhammad Wahid Deby S O Pasaribu Dhitya, Ray Krisna Didin Zakaria Lubis Didin Zakariya Lubis Elliya, Rahma Epilasari, Epilasari ERWAN, FRAGESTHA Faishol, Faishol Femiana Gapsari MF Furqoni, Prima Dian Hadi, Riswan Haryanti, Mega Henry Aspan Hermanto, Yon Ade Lose Heru Prasetyo Heru Suryanto Horng, Gwo Jiun Imam Muda Nauri Indaman, Putri Irham Fadlika Janas, Dawid Juana, Rika K, Umi Rohmayati Keswara, Umi Romayati Khoirudin, Parid Khoyroh, Syafira Bilqis Kurniasih, Dennti Kurniawan, Franky Kusubakti Andajani M. Alfian Mizar M. Arif Sani M. Arifki Zainaro Manawan, Maykel Mardiani, Wiwin Mardji Mardji Martok, Yenni MHD AZHALI Siregar Mishima, Kenji Muliadin , Muliadin Muntholib Nandang Mufti Pangesti, Dimas Ning Pasha, Muhammad Faizullah Perdana, Muhamad Rayhan Rizky Pradana, Yanuar Rohmat Aji Prasetya, Riduwan Prihanto Trihutomo Putri, Evalistiyo Rachmawati, Yessy Rahman, Chandra Hairat Abdul Rahmawati, Reka Putri Ramadhan, Rafli Adi Retno Wulandari Retno Wulandari Riana Nurmalasari Riduwan Prasetya Rilyani, Rilyani Rina Rifqie Mariana Riska Wandini, Riska Riski, Akhmad Afrizal Riyanto, Mochammad Deny Rizka, Mahda Rr. Poppy Puspitasari Saputro, Suratno Adi Sari, Devi Ratna Sari, Lisa Yuliana Sari, Made Novita Sari, Mentari Permata Satria, Frinan SATRIA, FRIYAN Selfianti, Selfianti Setiawati Setiawati Shiddieqy, M. Hasbi Ash Silvia, Eka Sinuhaji, Frans G Siti Aisyah Slivia, Eka Suprayitno Suprayitno Suprayitno Suprayitno Surani, Eka Sri Syah, Muhammad Zacky Tengku Riza Zarzani N Trismiana, Eka Trismiyana, Eka Triyoso, Triyoso Tuwoso Ulandari, Elpi WAHYU HIDAYAT, NUR Winson, Lelita wulan, Sarinah sri Yenni Yenni Yulendasari, Rika Yusran Gea, Ali

Title Search

Found 10 Documents Search Journal : Journal of Mechanical Engineering Science and Technology

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 10 Documents
Search
Journal : Journal of Mechanical Engineering Science and Technology