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JIPTEK
Published by Universitas Pamulang
ISSN : -     EISSN : 26865157     DOI : http://dx.doi.org/10.32493/jiptek.v4i2
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics
JIPTEK Journal “Science and Technology Innovation Journal” is a scientific journal published by the Mechanical Engineering Study Program, Faculty of Engineering, Pamulang University. This journal is a forum for lecturers, researchers and students as a medium for publishing scientific research in the fields of Energy convertion, Materials, Manufacturing and Automation, Construction, Mechanical Design JIPTEK was first published in 2019 in a printed version. The printed version of the ISSN JIPTEK number is 2686-5157 on October 19, 2019. The Journal of Scientific and Technological Innovation (JIPTEK) is a comprehensive reference journal that encourages the sharing of knowledge and discoveries among researchers in the field of mechanics working at different length scales. Articles published in the Jiptek Journal are original manuscripts that have never been published before. Jiptek is published twice a year, namely in April and October.
Arjuna Subject : Energi (semua kategori) - Teknik Energi dan Teknologi Daya
Articles 90 Documents
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Perbandingan Aplikasi Tepung Sagu dan Tepung Tapioka Sebagai Bahan Perekat Briket dari Arang Serbuk Kayu Haikal, Diaz Satya; Rahmawati, Dian Suci; Handayani, Ikha; Maharani, Mitha; Setyowati, Agustina Dyah
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 5 No. 1 (2023): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/jiptek.v5i1.35736

Abstract

Serbuk gergaji kayu adalah limbah dari hasil pengolahan kayu yang pemanfataannya belum maksimal biasanya langsung dibuang, dibakar, dan dibiarkan begitu saja oleh pemilik industri. Serbuk gergaji kayu masih mengikat energi yang melimpah dan dapat dimanfaatkan sebagai bahan pembuatan briket. Serbuk gergaji kayu merupakan biomassa dengan kandungan terbesar berupa selulosa, disamping hemiselulosa dan lignin dalam jumlah kecil. Semakin tinggi kandungan selulosa dapat menghasilkan briket yang bermutu baik dan dapat menurunkan kadar abu. Pembuatan briket umumnya memerlukan penambahan bahan perekat bertujuan agar sistem briket kompak sehingga tidak mudah hancur serta dapat meningkatkan nilai kalor briket tersebut. Perekat yang digunakan pada penelitian ini yaitu tepung tapioka dan tepung sagu. Tujuan dari penulisan artikel ini adalah membandingkan efektivitas antara tepung tapioka dan tepung sagu sebagai bahan perekat dalam pembuatan briket dari arang serbuk kayu. Hasil uji nyala api pada penelitian ini menunjukan bahwa bahan perekat, yaitu tepung tapioka dan tepung sagu, memiliki efektivitas yang hampir sama untuk merekatkan arang menjadi sebuah briket. Briket arang dengan perekat tepung tapioka memiliki waktu nyala sekitar 27 menit 33 detik, sedangkan briket arang dengan perekat tepung sagu memiliki waktu nyala sekitar 27 menit 13 detik. Hal ini disebabkan kareana perbandingan kerapatan yang hampir sama untuk setiap bahan perekat (tepung sagu dan tepung tapioka). Kerapatan yang rendah memudahkan pembakaran briket karena semakin besar rongga atau celah yang dapat dilalui udara dalam pembakaran.
Analisis Pengukuran Efisiensi Volumetrik Mesin Diesel Alat Uji Prestasi Solihat, Ihat; Mahendrawan, Ersam; Sukandar, Sukandar
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 5 No. 1 (2023): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/jiptek.v5i1.37233

Abstract

Performa mesin diesel sangat dipengaruhi oleh banyaknya udara yang masuk ke ruang bakar. Mesin diesel tidak dilengkapi dengan sistem pengapian, maka bahan bakar akan terbakar dengan sendiri oleh udara yang dikompresikan sehingga tekanan dan suhunya meningkat melebihi titik nyala bahan bakar. Mesin diesel mesin empat langkah pada kondisi idealnya dapat mengisap udara pada langkah hisap sebanyak volume langkah pistonnya. Namun pada kenyataannya udara yang masuk ke ruang bakar tidak sebanyak itu. Perbandingan antara jumlah udara yang terisap dalam keadaan yang sebenarnya terhadap jumlah udara yang terisap dalam keadaan yang ideal disebut efisiensi volumetrik. Hasil dari penelitian ini yaitu bahwa ada pengaruh efisiensi volumetrik rata-rata dari variasi penyetelan celah katup masuk. Penyetelan celah katup masuk yang semakin rapat pada setiap putaran mesin, efisiensi volumetrik rata-rata yang dihasilkan cenderung meningkat. Demikian juga halnya dengan putaran mesin yang semakin tinggi hingga 1600 Rpm pada setiap celah katup masuk, efisiensi volumetrik rata-rata yang dihasilkan  juga cenderung  meningkat.  Saran,  sebaiknya penyetelan  celah katup masuk harus sesuai dengan spesifikasi mesin, harapannya agar pada kondisi putaran mesin tertentu efisiensi volumetrik rata-rata tetap tercapai dengan maksimum.
Analisis Distribusi Temperatur Dengan Metode CFD Pada Fluida Primer Integral Pressurized Water Reactor (iPWR) Putri, Sunny Ineza; 'Atifah, Nailul; Syawaludin, Adlisyah Hakim; Hutasoit, Leonardo Sintong Partogi
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 5 No. 2 (2024): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK)
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/JIPT.v5i2.39788

Abstract

The fluid circulating in the iPWR uses two working fluids, the primary fluid as a reactor coolant which delivers heat to the secondary fluid to generate steam. The secondary working fluid flows in the steam generator pipe without direct contact with the primary working fluid. The cooling process of the primary working fluid can be simulated using the Computational Fluid Dynamics (CFD) method to obtain the temperature distribution in the reactor core. So, this research will focus on analyzing the temperature distribution of the first working fluid in the iPWR reactor core using the CFD method. Simulation of the primary fluid flow being heated or cooled under normal conditions to reach the upper and lower temperature targets by adjusting the fluid flow speed used. Under normal and/or mal function conditions, the water temperature does not reach saturation. However, this research has not considered the material condition and pressure when the auxiliary tools are disabled.
Perancangan Pipa Sistem Pemadam Kebakaran di Stasiun Pengumpul Minyak Mentah Suhaeri; Azhari, Hari
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 5 No. 2 (2024): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK)
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/JIPT.v5i2.39792

Abstract

Crude oil gathering stations are locations where crude oil is collected before being transported to processing facilities or ports. The fire suppression system pipeline is an important component in the safety infrastructure of this station. This system is designed to detect, control, and extinguish fires quickly and effectively. In determining the pump must consider the needs of the area to be extinguished. The ring line headers (distribution pipes) or pipes surrounding the crude oil storage area must be designed, and be able to deliver the necessary water needs from the fire pump and pay attention to the economic aspects. The fire assumption designed is if one tank is burned and the other tank is cooled with water to prevent fire. The pump chosen is a centrifugal type pump and in addition a jockey pump is needed to maintain pressure in the main pipe or if the pressure drops to a certain value, the jockey pump will automatically start. The water pool to supply fire protection needs is designed to meet the minimum needs for 4 hours. Based on the design results obtained that the centrifugal pump capacity requirement is 0.148 m3 / s with a power of 25.84 kW and installed 1 pump driven by an electric motor and 1 pump driven by a diesel motor. For the main pipe size, a pipe with a nominal diameter of 12 inches with schedule 40 is needed. For the water pool in the form of roving castings with an effective volume of 4 hours.
Pengaruh Dolomite Terhadap Sifat Fisika dan Kimia Keramik Setyowati, Agustina Dyah; Sulanjari; Irawan, Ade
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 5 No. 2 (2024): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK)
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/JIPT.v5i2.39793

Abstract

The ceramic industry material has experienced rapid development. This development includes advancements in structure, composition, and physical and mechanical properties. One effort to enhance mechanical strength is by mixing ceramic materials with other materials available in the market. The quality of ceramics is a crucial factor to consider, one of which is by examining the physical and chemical properties of ceramics. Dolomite is one of the materials that significantly impacts ceramic formation; therefore, experiments need to be conducted to determine the extent of dolomite's influence on ceramic quality. Tests are carried out to ascertain the effect of dolomite amount on the characterization of ceramics. The characterization of ceramic samples with added dolomite in various amounts includes chemical and physical properties. The chemical properties of ceramic materials are determined through chemical analysis using X-Ray Fluorescence to identify the elements present in the ceramic materials. Physical properties can be determined by measuring shrinkage, compressive strength, and bending. The obtained chemical and physical properties can be used to determine the appropriate composition of dolomite as a ceramic material to achieve good ceramic quality. The correct material composition will produce ceramic products that are harder and stronger, making them less prone to breaking when heated. The chemical analysis results of dolomite using X-Ray Fluorescence show that the main elements are CaO and MgO with mass percentages of 69.41% and 29.37%, respectively. The more dolomite added to the ceramic raw material, the higher the content of CaO and MgO. The physical properties of ceramics with the addition of 2.50% dolomite in the ceramic material result in a dry shrinkage of 3.37%, firing shrinkage of 8.87%, compressive strength of 74.21 MPa, and bending of 22.76%.
Analisa Hasil Pengelasan Oxi-Acetylene Dengan Kawat Las Tembaga dan Borak Pada Baja ST 37 Saputra, Aldi Maulana; Choliq, Abdul
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 5 No. 2 (2024): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK)
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/JIPT.v5i2.39794

Abstract

The use of bicycles in Indonesia has experienced significant growth as part of a lifestyle and sport. Bicycle frame materials have undergone several innovations from steel, aluminum, carbon fiber and even wood. Old bicycles have chromoly steel and high tensile steel frame materials. For reasons of convenience and hobby, many old bicycles are still cared for and used by bicycle hobbyists even though they need repair due to corrosion. Welding a frame with holes or breaks often becomes a problem, especially in determining the welding technique, type of welding and additional metal used. This research aims to determine the effect of mixing borax in welding additives on the tensile strength and hardness values ​​after welding using the oxy-acetylene method and copper and brass additives. The specimen is ST 37 steel, 200mm long, 20mm wide and 10mm thick. V-beam connection model with a 60⁰ angle. The resulting welds are tensile tested using the ASTM E-8 test standard. During the steel welding process, it was found that the additional metal in the form of copper without a mixture of borax was difficult to fuse with the base metal. However, if the copper is mixed with borax by dipping the copper tip before welding, it will be easier to fuse. The results of the hardness test showed that welded samples without borax had a lower tensile strength value compared to samples with metal added copper or brass with the addition of borax, namely 48.3 N/mm2 compared to 78.3 N/mm2. The hardness test results show that oxy-acetylene welding with added copper is 230HV, while welding with the addition of borax is lower, namely 160HV. Thus, it is concluded that for welding bicycle frames made of steel, it is best to use oxy-acetylene welding, because the fire produced is not too big and using additional copper or brass materials by adding borax to the additional metal.
Disain dan Analisa Rangka Belt Conveyor Pemilah Manual Kapasitas 8 Ton m3/jam Aranda, Irwan
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 5 No. 2 (2024): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK)
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/JIPT.v5i2.40077

Abstract

A manual sorting conveyor belt is a machine that functions to move raw materials from one place to another and sort the raw materials conventionally. To make a manual sorting belt conveyor machine, a construction is needed, namely a frame that functions as a support to support all components such as the belt, roller, hopper, output and gravity roller conveyor. The frame material to be used must have mechanical properties that are sturdy, strong and resistant to vibrations in the machine when operated. To obtain maximum value in designing a conveyor belt machine, a planning concept is needed according to the needs and materials to be used. In this research, design and analysis were carried out using Solidworks 2020 software with ASTM A36 Steel material with an accepted static load of 81340 N from the component weight. The results obtained in the design include the design of the conveyor belt frame. The simulation results with a load of 81340 N were obtained from the Von misses simulation on the conveyor frame resulting in a max value of 5.27 N/mm² and a min of -36.72 N/mm² with a deformation scale of 10, Analysis of the displacement simulation on the conveyor frame with a load of 81340 N produces a max value of 10.25 mm and a min of 0.00 mm with a deformation scale of 10. Analysis of the safety factor simulation on the conveyor frame with a load of 81340 N produces a max value of 8.65 x 106 and min 1.5 so that the manual sorting belt conveyor machine design is declared safe to use. The comparison between the simulation results and the calculation results has an error percentage including von Mises stress of 2%, Displementation of 7%, and Safety Factor of 6% so that the simulation and calculation results are declared accurate.
Simulasi Pemodelan Crane Hook Tipe Baja AISI A514 Alloy Stell Menggunakan Software Autodesk Inventor Professional 2020 Cahyadi, Muhammad; Nasrun, Mohamad; Gea, Markus
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 5 No. 2 (2024): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK)
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/JIPT.v5i2.40084

Abstract

Lifting aircraft or crane is a combination of a lifting mechanism separately with a frame to lift and or simultaneously move loads that can be hung freely or tied to a crane. Part of the crane hoist has a main component called a crane hook that functions as a load or material hook. The hook is one of the hoisting elements that is very important in crane operations[9]. The types of hooks differ in terms of function, material, form and safety factor, so they must be analyzed, inspected and tested properly so as not to endanger workers in the field. The analysis was carried out numerically using Autodesk Inventor Professional 2020 software[2] . Analysis of hooks generally uses analytical methods or calculations with mathematical models and standardized (common) Algebraic formulas, along with the development of technology today, many engineering sciences have been developed in the field of finite element science which unites mathematics, engineering and science. computer to produce software such as Autodesk Autocad, Autodesk Inventor. In the simulation results of the finite element software on the hook for a loading of 25 tons, the single hook type obtained a maximum stress of 807.809 MPa and the deflection that occurred was 1.444 mm, in the double hook type the maximum stress was 532.632 MPa and the deflection was 0.1871 mm. The simulation results will then be compared with the results of analytical calculations. Analytical calculations for single hooks obtained working stress of 761,729MPa, on double hooks of 387,102 Based on the simulation results and analytical calculations, it can be concluded that the crane hook structure is still within safe limits. This is because the yield strength of the material used in AISI A514 alloy steel is 890 MPa. However, of the three types of hooks at a loading of 25 tons, single hooks have the greatest potential for failure.
Analisa Kerusakan Gear Countershaft Transmision pada Sepeda Motor ANF 125 dan Optimasi Umur Pakai Diyanto, Muhammad Isro
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 5 No. 2 (2024): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK)
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/JIPT.v5i2.40201

Abstract

Gear countershaft transmission on the motorcycle engine serves to move the rotary power from input shaft to gear acceleration. Damage to wear and tear on the eyes of the gears and broken on the eyes of the gears. In the event of damage, the tooth will be difficult to move, the transmission jumps out of the tooth, the engine does not work optimally and the engine raises noises.With visual observations of damage to gear countershaft, tests should be performed to ensure the cause of the damage includes testing of material composition, hardness test, tensile test and metallographic tests and microstructure observations. Analysis of test results is compared with the literature, international material standard, perm simulation and other supporting factors are expected to be the right decision reference on the main cause of the damage The conclusions of the main causes of damage are used for the development of extending life time including material improvements, manufacturing, installation methods and the adoption of appropriate maintenance management systems.
Pengaruh Variasi Isolator Terhadap Kinerja Kompor Biomassa Sekam Padi Atifah, Nailul; Putra, Ilham Nugraha
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 6 No. 1 (2024): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK)
Publisher : Universitas Pamulang

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

Abstract

Biomassa adalah bahan biologis yang berasal dari tumbuhan dan hewan. Biomassa dapat dikonversi menjadi sumber energi biomassa. Salah satu contoh biomassa sisa hasil pertanian yang belum dimanfaatkan adalah sekam padi. Sekam padi dapat dimanfaatkan sebagai bahan bakar untuk memasak dengan menggunakan kompor sekam padi. Pada desain kompor sekam padi, salah satu faktor yang berpengaruh adalah isolator. Penelitian ini bertujuan untuk mengetahui pengaruh variasi isolator terhadap termperatur dinding luar kompor dan laju perpindahan panas konveksi natural dari dinding luar ke lingkungan. Variasi bahan isolator yang digunakan ada tiga macam yaitu isolator udara, serbuk batu bata, dan abu sekam padi. Bahan isolator dimasukkan pada ruang yang berada antara dinding dalam dan dinding luar kompor. Hasil penelitian menunjukan bahwa variasi isolator berpengaruh terhadap temperatur dinding kompor dan laju perpindahan panas. Temperatur dinding luar rata rata dengan isolator udara, serbuk bata, dan abu sekam secara berturut-turut adalah 170,14℃, 94,49℃, dan 78,78℃. Rata-rata laju perpindahan panas menggunakan isolator udara, serbuk bata, dan abu sekam secara berturut-turut adalah 334,17 Watt, 96,14 Watt, dan 95,70 Watt.

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