Article Per Year (5 Year)
p-Index From 2021 - 2026
1.829
P-Index
This Author published in this journals
All Journal Jurnal Sains dan Teknologi Jurnal Teknologi Rekayasa Mesin Journal of Mechanical Engineering Science and Technology Majalah Ilmiah Pengkajian Industri Jurnal Riset Teknologi Pencegahan Pencemaran Industri International Journal of Aviation Science and Engineering Journal of Innovation and Technology Jurnal Rekayasa, Teknologi, dan Sains International Journal of Renewable Energy Development Bhinneka Multidisiplin Journal
Yusup Hendronursito, Yusup
Unknown Affiliation
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

Published : 16 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 16 Documents
Search

 1   2 
Comparison Study Between the Experimental and Finite Element Analysis (FEA) on a Static Load of Magnesium AZ31B as Biodegradable Bone Plate Material Wicaksono, Mahruri Arif; Sukmana, Irza; Akhmad Riszal; Hendronursito, Yusup; Nazarrudin, Rizal; Haviz, Muhammad
Jurnal Inovasi Teknologi Vol 5 No 2 (2024): October
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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

Abstract

Biomaterials is an advanced material engineering technology that is used to help heal bone fractures or fractures. Currently, many biomaterials use materials such as titanium alloy, stainless steel, platinum, and chromium, but these materials cannot be degraded naturally so a second operation must be carried out to remove the installed biomaterial. Biomaterials are temporary in nature so when the bone returns to its original state, the biomaterial must be surgically removed. Research was conducted to obtain a design with a material that can be naturally degraded without causing toxicity. Magnesium AZ31B is a recommended candidate as a base material for degradable bone implants. Magnesium AZ31B material, it is expected to reduce or minimize the surgical removal of implant biomaterials. Bone plate geometry  use plate  bone  dimension 150mm x 15mm x 3mm with  variation 10 hole parallel and zigzag as well as with a bolt  bone  dimensions  long 40 mm with pitch 1mm diameter 5mm. Test bending was conducted  with ASTM E290-14 showing  that on plate  bone  hole parallel  with  burden  maximum 33,419 KN with a deformation  maximum of 30.89 mm whereas  for  plate  bone  hole zig zag with the burden  maximum 32,863 KN with  deformation  maximum big as 29.97 mm. From the study  experimental  that  plate  bone  hole  parallel  have  nature  mechanic  more  tall  compared  with  plate  bone  hole zig Zag although  with the difference which is not significant. Whereas on simulation FEA plate bone  hole  parallel  with  burden 33,419 KN get  results total deformation  as big as 31,481 mm with von Mises stress 15,337 MPa, then  for  plate  bone  hole zig Zag with  burden 32,863 KN with total deformation 32.466 mm and von Mises stress as big as 33,948 MPa. In testing by  experiment and simulation FEA plate  bone  hole  parallel  get  difference  around 0.591 mm or 0.94% whereas  for  plate  bone  hole zig Zag in  testing  by  experiment and simulation  get  difference  around 2,893 mm or 4.60%.
STUDI KASUS MORFOLOGI NANOFIBER POLIVINIL ALKOHOL (PVA) TERHADAP HIDROFOBISITAS PERMUKAAN YANG DINILAI DENGAN PENGUKURAN SUDUT KONTAK Berly, Yoga Maharesha; Rajagukguk, Tumpal Ojahan; Hendronursito, Yusup
Bhinneka Multidisiplin Journal Vol. 2 No. 4 (2025): Bhinneka Multidisiplin Journal
Publisher : Yayasan Education and Social Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53067/bmj.v2i4.71

Abstract

Nanofiber is a fiber measuring nanometers to micrometers, often used in the medical, energy, filtration, and other fields. The formation of nanofiber with the main ingredient, namely Polyvinyl Alcohol (PVA), this is because of its biodegradable, biocompatible, and chemically stable properties, but has the weakness of being easily degraded when in contact with water. This study examines the effect of electrospinning parameters on the morphology of 10% w/v PVA nanofiber, with parameters namely voltage of 10 and 12 kV, nozzle-collector distance of 10 and 15 cm. Morphological testing was carried out using a Field Emission-Scanning Electron Microscope (FE-SEM) and Contact Angle (CA) test. The test results show that PVA nanofiber has a fiber diameter with a value of NFZ.1; 80 - 406 nm, NFZ.2; 61.7 - 248.9 nm, with a continuous fiber structure and without significant defects, the resulting contact angle value of NFZ.1; 50.05o and NFZ.2; 38.75o, the contact angle value of NFZ.1 is higher than NFZ.2. The nanofiber with the smallest diameter is NFZ.2 and the largest contact angle value is NFZ.1. The results of this research show that the morphology of nanofiber significantly influences the contact angle value.
ANALISA VARIASI ARUS MENGGUNAKAN LAS GTAW PADA MATERIAL SS JIS410J1 DENGAN FILLER ER308L R, Tumpal Ojahan; Putra, Ferry Mahardika; Hendronursito, Yusup
Jurnal Rekayasa Teknologi dan sains Vol 2, No 1 (2018): Jurnal Rekayasa, Teknologi, dan Sains
Publisher : Fakultas Teknik Universitas Malahayati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jrets.v2i1.1115

Abstract

Tujuan penelitian ini adalah mengetahui pengaruh las GTAW menggunakan Filler ER308L pada material SS JIS410J1 terhadap nilai uji tarik dan struktur mikro. Proses penelitian ini menggunakan las GTAW dengan variasi arus 150A, 200A, 250A dan menggunakan kampuh V. Untuk mengetahui hasil penelitian diatas maka dilakukan beberapa pengujian yaitu uji penetran, uji komposisi kimia, uji tarik serta struktur mikro. Dari hasil pengujian penetran tidak didapatkan cacat pada semua sampel. Dari hasil uji komposisi kimia setelah dilakukan perbandingan dengan standar JISG4303(2015), menunjukan bahwa material dasar adalah SS JIS410J1. Dari hasil pengujian uji tarik nilai yang terbaik terdapat pada proses pengelasan dengan variasi arus 150 A, dimana tegangan luluh 386,388 MPa, tegangan maksimal 830,392 MPa, perpanjangan 42,86 mm, regangan 40,81%. Hasil struktur mikro sebelum dilakukan pengelasan adalah fasa martensite, setelah dilakukan pengelasan terdapat penambahan fasa ferrite dan karbida crom pada HAZ dan fasa austenite pada daerah lasan.Kata kunci : stainless steel JIS410J1, sifat mekanik, variasi arus, pengelasan GTAWABSTRACT: Analysis Of Flow Variation Using Gtaw Ware On Ss Jis410j1 Material With Filler Er308l. The purpose of this research is to know the effect of GTAW welding using Filler ER308L on SS JIS410J1 material to tensile test value and micro structure. The research process uses GTAW welding with current variations of 150 A, 200 A, 250 A and using V. To find out the results of the above research then performed some testing that is penetrant test, chemical composition test, tensile test and micro structure. From the result of penetrant testing there is no defect in all samples. From the result of chemical composition test after comparison with JISG4303 (2015) standard, it shows that the basic material is SS JIS410J1. From the best value of tensile test result, there is welding process with variation of current 150 A, where yield stress 386,388 MPa, maximum voltage 830,392 MPa, extension 42,86 mm, strain 40,81%. The result of microstructure before welding is martensite phase, after welding there is addition of ferrite phase and carbide crom at HAZ and austenite phase in weld area. Keywords: stainless steel JIS410J1, mechanical properties, current variation, GTAW welding.
ANALISA FLUIDA PENDINGIN TERHADAP SIFAT MEKANIK DAN STRUKTUR MIKRO PADA MATERIAL STAINLESS STEEL 304 R, Tumpal Ojahan; Hendronursito, Yusup; Hidayat, Arif
Jurnal Rekayasa Teknologi dan sains Vol 1, No 2 (2017): Jurnal Rekayasa, Teknologi, dan Sains
Publisher : Fakultas Teknik Universitas Malahayati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/hjk.v12i2.1103

Abstract

Material stainless steel banyak digunakan di dunia industri dan alat-alat kesehatan karena memiliki sifat korosif yang baik, mampu mencegah kontaminasi, dapat didaur ulang, dekoratif dan mudah dibersihkan. Penggunaan stainless steel tidak lepas dari proses pengelasan, oleh karena itu penulis melakukan penelitian dengan memvariasikan Fluida Pendingin (Air, Oli dan Udara) menggunakan las GTAW dengan parameter debit aliran gas 17 liter/menit, arus 130 Amper dan Elektroda EWTh-2. Tujuan penelitian ini untuk mengetahui pengaruh pendinginan terhadap sifat mekanik dan struktur mikro. Hasil Pengujian Tarik nilai rata-rata σy = 374,0 MPa, σmax = 626,0 MPa, ΔL = 27,5 mm dan ε= 54,8 % fluida air. Nilai rata-rata σy = 335,3 MPa, σmax = 543,7 MPa, ΔL = 22,1 mm dan ε = 44,2 % fluida oli. Nilai rata-rata σy = 299,3 MPa, σmax = 481,3 MPa, ΔL = 19,4 mm dan ε = 38,8 % fluida udara.Hasil Pengujian Kekerasan nilai rata-rata fluida air daerah weld = 74,93 HRb, HAZ = 75,50 HRb. Nilai rata-rata fluida oli daerah weld = 74,77 HRb, HAZ = 74,60 HRb. Nilai rata-rata fluida udara daerah weld = 73,40 HRb, HAZ = 74,43 HRb. Fasa yang terbentuk sebelum pengelasan adalah fasa austenite, setelah dilakukan pengelasan terdapat penambahan fasa karbida crom. Dari hasil pengujian sifat mekanik yang telah dilakukan dapat disimpulkan bahwa untuk pengelasan GTAW dengan material stainless steel jenis 304 fluida pendingin yang terbaik adalah dengan menggunakan fluida pendingi air.Kata Kunci: GTAW, fluida pendingin, stainless steel 304, sifat mekanik, struktur mikro.ABSTRACT: Cooling fluid analysis of mechanical properties and micro structure on stainless steel 304 material. Stainless steel materials widely used in the industrial and medical equipment becausehaving the nature of corrosive, capable of preventing contamination, can be recycled, decorative and easily cleared. The use of stainless steel can’t be separated from the process of welding, writer do research by varying fluid cooling (Water, Oli and Air) using GTAW welding with discharge of the parameters a stream of gas 17 liters per minute, the current 130 Ampere and Electrodes EWTh-2. The purpose of this research to know the cooling influence against mechanical properties and micro structure. The results of tensile test value is σy = 374,0 MPa, σmax = 626,0 MPa, ΔL = 27,5 mm and ε = 54,8 % water fluid. The value is σy = 335,3 MPa, σmax = 543,7 MPa, ΔL = 22,1 mm and ε = 44,2 % oil fluid. The value is σy = 299,3 MPa, σmax = 481,3 MPa, ΔL = 19,4 mm and ε = 38,8 % airfluid. The results of hardness test value of water fluid in welding area = 74,93 HRb, HAZ = 75,50 HRb. The results value of oil fluid in welding area = 74,77 HRb, HAZ = 74,60 HRb. The results value of air fluid in welding area = 73,40 HRb, HAZ = 74,43 HRb. The phase that is formed before welding is the austenite phase, through welding there are adding the phase carbide crom. From the testing mechanical properties that has been in conclusion that for GTAW welding with the material stainless steel 304 cooling kind of fluid the list is water cooling fluid.Keywords: GTAW, cooling fluid, stainless steel 304, mechanical properties, micro structure.
The Effect of Lime Stone in the Probability of Formation Pores Structures in Glass Ceramic Based on Scoria Basalt Rocks Birawidha, David Candra; Sumardi, Slamet; Oktaviando, Fany; Karo-Karo, Pulung; Isnugroho, Kusno; Hendronursito, Yusup; Amin, Muhammad
JST (Jurnal Sains dan Teknologi) Vol. 12 No. 2 (2023): July
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v12i2.44366

Abstract

This paper provides a Lightweight material is the result of technological problems in increasing the efficiency of finished products, saving manufacturing costs and environmentally friendly technology by reducing the amount of material used. There are many kinds of material manufacturing technology, ranging from the use of lightweight materials from the start, combining materials into composites and modifying the structure and characteristics of the material to make it lightweight. One commonly used method is to mix glass-ceramic with a foaming agent in purpose to modify the structure of material. The purpose of this study is to utillize basalt rock as source of glass ceramic and mixed with limestone to form cellular structure with optimal composition. The samples was crushed and sieve through 100 mesh afterward all material is mixed varied between basalt and lime with a ratio of sample A (100% Basalt), sample B (3:7), sample C (5:5), and sample D (7:3), which were burned at a temperature of 1100°C and 1300°C. After all sample reach designated temperature, all sample undergo annealed cooling in the furnace. Based on the characterization results, the best glass-ceramic sample formed with pores structure formation was sample B which is 70% addition of limestone in basalt mixture and burned at a temperature of 1100°C with a total pore size of 63% and a density of 0.92 g/cm3, where the glass-ceramic structure detected pyroxene and lime phases with a SiO2 composition of 14.61%. Basalt cellular ceramic is obtained in optimal condition with low density and higher percentage porosity.
The Effect of Bentonite and Palm Shell Ash on The Mechanical and Physical Properties of Geopolymer Concrete Hendronursito, Yusup; Amin, Muhammad; Chambioso, Yugo; Suharto; Marjunus, Roniyus
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 13 No. 2 (2022): November
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2022.v13.no2.p21-27

Abstract

Geopolymer concrete is an alternative to obtaining environmentally friendly mortar by synthesizing materials that contain a lot of aluminum silicate. This study aims to determine the effect of bentonite and palm shell ash composition on geopolymers' physical and mechanical characteristics. All materials are mashed, mixed, and molded with a 5x5x5 cm3 cube. Ten specimens were prepared with bentonite - palm shell ash compositions are 40/45, 45/40, 50/35, 55/30, and 60/25 wt%. Meanwhile, the composition of NaOH, Na2SiO3, superplasticizer and water remained at 1.3, 7.7, 2, and 5 wt%, respectively. Then the samples were dried at room temperature for 24 hrs and heated at 60 °C or 80 °C for 12 hrs. The geopolymer concrete with the best characteristics was obtained with a composition of 40 wt% bentonites and 45 wt% palm shell ash by heating at 80 °C. This specimen has a compressive strength of 11.94 MPa with a density of 2.42 g/cm3, porosity of 8.43%, and absorption of 3.48%. The results have a chemical composition of 55.59% SiO₂, 9.45% Al2O3, and 8.22 Fe2O3 with a dominant quartz phase. Scanning electron microscope photo shows good bonding between particles, and there are no pores formed.
Co-Authors Akhmad Riszal Al Muttaqii, Muhammad Aminuyati Anshori, Anang Arif Hidayat Berly, Yoga Maharesha Birawidha, David Candra Birawidha, David Candra Candra Birawidha, David Chambioso, Yugo Clarasati, Frista Hendriyanto, Agus Irza Sukmana, Irza Isnugroho, Kusno Isnugroho, Kusno Karo Karo, Pulung M. Haviz Marjunus, Roniyus Muhammad Amin Muttaqii, Muhammad Al Muttaqqi, Muhammad Al Nazarrudin, Rizal Oktaviando, Fany Pulung Karo-Karo Putra, Ferry Mahardika R, Tumpal Ojahan Riszal, Akhmad Rizal Adi Saputra Sabarman, Harsojo Saputra, Asep Andri Slamet Sumardi, Slamet SUHARTO Supriyatna, Yayat Iman Tumpal Ojahan Rajagukguk Tumpal Ojahan Rajagukguk Wicaksono, Mahruri Arif Widi Astuti Yulia, Andini Yunanto, Asep