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All Journal Rekayasa Mesin Jurnal Ilmiah Teknik Mesin Scientific Journal of Mechanical Engineering Kinematika JTAM ROTARY
Mariki, I Wayan Wawan
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Automotive Engineering Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Karakteristik Pembakaran Biobriket Kulit dan Cangkang Karet (Hevea Brasiliensis) dengan Perekat Glyserin Mariki, I Wayan Wawan; Wahyudi, Slamet; Widhiyanuriyawan, Denny
Rekayasa Mesin Vol 8, No 1 (2017)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (550.831 KB) | DOI: 10.21776/ub.jrm.2017.008.01.1

Abstract

Some studies have been done on utilizing biomass from agriculture such as the leather and shell of rubber (Hevea brasiliensis) were not used optimally in Indonesia as an alternative energy which developed by making biobriquet to achieved the higher energy that could be used in the combustion process. In this study, the biobriquet was made of the leather and the shell of rubber by comparisson of the leather and shell were: 0%: 91%; 45.5%: 45.5%; 55%: 36%; 64%: 27%; 91%: 0%.Glyserin 9% for each percentage of biobriquet was used as adhesive material and the drying temperature of 110 C. This study aims to investigate the characteristics of biobriquet combustion which made of the leather and shell of rubber. The results shows that the biobriquet combustion process which made of 64% rubber leather and 27% rubber shell has a calorific value of 5313,923 Kal/gr. In 20 seconds of initial ignition, the combustion process shows the improvement such as increased concentrations of the flammable leather, bluish red fire.
ANALISA PRODUKTIVITAS EXCAVATOR KOMATSU PC 2000 PADA OVERBURDER REMOVAL DI PT. JHONLIN BARATAMA I Wayan Wawan Mariki; Duan Arpilanoor; Heldayanti
Scientific Journal of Mechanical Engineering Kinematika Vol 6 No 2 (2021): SJME Kinematika Desember 2021
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v6i2.194

Abstract

In mining activities, one of the overburden activities is heavy equipment working at PT. Jhonlin Baratama in digging and loading using a PC 2000 excavator for the productivity process. With the company's production target of 865 BCM/hour. This research aims to determine the data of the cycle time in the excavator productivity of the excavator PC 2000 by using the calculation method match factor. The results of the calculation of the total average cycle time of the excavator is PC 200030.33 seconds, with a Bucket capacity of 12 BCM, Fill factor 0.9%, Swell Factor 0.8 with efficiency work 0.79%, while the total average HDK conveyance is Komatsu 78510.61 seconds and HDK Komatsu 465 is 9.99 minutes, from the calculation of the productivity of the excavator PC 2000 of 810 BCM/hour so that the production target has not been achieved optimally because in processing the macth factor is 0.74.
PENGARUH PENGGUNAAN WIND GATE TERHADAP UNJUK KERJA TURBIN ANGIN DARRIEUS TIPE H Lia Agustina; I Made Susanto; I Wayan Wawan Mariki
Scientific Journal of Mechanical Engineering Kinematika Vol 7 No 1 (2022): SJME Kinematika Juni 2022
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v7i1.216

Abstract

Has performed characterization of the darrieus wind turbine type H through wind speed measurement and rotor rotation speed which can be used to knowing the optimal performance wind turbine. Measurement of wind speed is done with using an anemometer. Measurement of rotor rotation speed using a tachometer. Wind turbines characterized in this study are darrieus wind turbines type H varied into wind turbines using wind gates and wind turbines without wind gates. The results obtained from this study are differences power values and differences in the efficiency values of the wind turbine using the wind gate and without the wind gate. The maximum power value of wind turbines is owned by the darrieus wind turbine type H without using a wind gate which reaches 77.55 watts of power. The highest efficiency value is owned by darrieus wind turbines type H using the wind gate which reaches 36.25%.
Prototype Sistem Anti Kriminal Menggunakan Open CV Pada Python Berbasis Mikrokontroller -, sukarno; amar, Ishak; Mariki, I Wayan Wawan
Jurnal Ilmiah Teknik Mesin Vol 13 No 1 (2025): JURNAL ILMIAH TEKNIK MESIN
Publisher : Universitas Islam 45 Bekasi, Fakultas Teknik, Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/jitm.v13i1.10670

Abstract

Security is the most important and primary thing in human life. It is generally known that security systems in the form of CCTV cameras and security guards have not been effective in providing a deterrent effect to criminals in carrying out their actions. So it takes a way to deal with this, the author created a prototype of an anti-crime security system using open CV on python based on a microcontroller. From the test results after conducting several experimental scenarios on the prototype that was created, it can function normally. The system created is able to identify or recognize facial samples at a distance of about 1.5 meters, with a minimum light intensity of 407 lux. The prototype is able to track the presence of target movements and can follow target movements from an angle of 0o-180o vertically and from an angle of 00-60o vertically, and can shoot targets in a stationary position within 5 seconds.
DESAIN DAN SIMULASI CHASSIS MOBIL KMHE MODEL SPACE FRAME Susanto, I Made; Agustina, Lia; Mariki, I Wayan Wawan
JTAM ROTARY Vol 8, No 1 (2026): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v8i1.17382

Abstract

Penelitian ini bertujuan untuk merancang dan mensimulasikan chassis mobil KMHE menggunakan perangkat lunak Autodesk Inventor dan software ANSYS. Chassis mobil KMHE yang dirancang menggunakan model space frame dengan material utama hollow baja hitam. Parameter teknis seperti uji tarik, deformasi, tegangan dan safety factor digunakan untuk mendukung proses simulasi dan analisis perfoma mekanik chassis mobil KMHE. Hasil penelitian menunjukkan pada uji tarik material hollow baja hitam sebagai bahan utama chassis KMHE diperoleh nilai yield strength sebesar ±317,5 MPa dan ultimate tensile strength sebesar ±393,6 MPa, serta modulus elastisitas sebesar ±19.226 MPa. Hasil ini menunjukkan bahwa material tersebut memiliki sifat mekanik yang kuat, kaku, dan layak digunakan sebagai struktur utama chassis kendaraan ringan. Pada analisis deformasi, tegangan, dan safety factor menggunakan perangkat lunak ANSYS diperoleh nilai deformasi maksimum sebesar 40,05 mm, tegangan maksimum sebesar 7,24 MPa serta menghasilkan safety factor sebesar 43,86. Hasil ini menandakan struktur sangat aman untuk digunakan dalam kondisi pembebanan statis pada kendaraan KMHE. This study aims to design and simulate the KMHE car chassis using Autodesk Inventor and ANSYS software. The KMHE car chassis is designed using a space frame model with the main material being black steel hollow. Technical parameters such as tensile tests, deformation, stress, and safety factor were used to support the simulation process and analysis of the KMHE vehicle's mechanical performance. The results showed that tensile tests using black hollow steel as the primary material for the KMHE chassis yielded a yield strength of ±317.5 MPa, an ultimate tensile strength of ±393.6 MPa, and a modulus of elasticity of ±19,226 MPa. These results indicate that the material possesses strong and stiff mechanical properties, making it suitable for use as the primary structure of a light vehicle chassis. Analysis of deformation, stress, and safety factor using ANSYS software yielded a maximum deformation of 40.05 mm, a maximum stress of 7.24 MPa, and a safety factor of 43.86. These results indicate that the structure is very safe for use under static loading conditions in KMHE vehicles.
PENGARUH FRAKSI VOLUME DAN PERLAKUAN AWAL TERHADAP KEKUATAN TARIK KOMPOSIT SERAT BATANG PISANG Agustina, Lia; Susanto, I Made; Mariki, I Wayan Wawan
JTAM ROTARY Vol 8, No 1 (2026): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v8i1.17383

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh variasi fraksi volume dan perlakuan awal serat terhadap kekuatan uji tarik pada material komposit berbasis serat batang pisang. Material komposit ini dikembangkan sebagai alternatif bahan penguat alami yang ramah lingkungan dan memanfaatkan limbah biomassa. Serat batang pisang diberi perlakuan alkali dengan variasi larutan NaOH 2%, 4%, 6% untuk meningkatkan kualitas antarmuka antara serat dan matriks resin epoxy. Variasi fraksi volume serat yang digunakan adalah 20%, 40%, dan 60%. Proses pembuatan komposit dilakukan dengan metode hand lay-up, sedangkan pengujian sifat mekanik meliputi uji tarik (ASTM E8). Hasil penelitian adalah pengujian pada fraksi volume 40% yang menghasilkan sifat mekanik terbaik untuk aplikasi struktural. This study aims to determine the effect of variations in volume fraction and fiber pretreatment on the tensile strength of banana stem fiber-based composite materials. This composite material was developed as an alternative environmentally friendly natural reinforcing material and utilizes biomass waste. Banana stem fibers were treated with alkali with variations NaOH solution of 2%,4%, 6% to improve the quality of the interface between the fiber and the epoxy resin matrix. The variations in fiber volume fraction used were 20%, 40%, and 60%. The composite manufacturing process was carried out using the hand lay-up method, while mechanical property testing included tensile testing (ASTM E8). The results of the study were testing at a volume fraction of 40% which produced the best mechanical properties for structural applications.
Co-Authors Amar, Ishak Denny Widhiyanuriyawan Duan Arpilanoor Heldayanti I Made Susanto Lia Agustina Lia Agustina, Lia Praganif Sukarno Slamet Wahyudi Susanto, I Made