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Program Studi Teknik Mesin, Fakultas Teknik, Universitas Lambung Mangkurat Jalan Jenderal Achmad Yani KM 35,5 Banjarbaru, Kalimantan Selatan - 70714
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Scientific Journal of Mechanical Engineering Kinematika
Published by Universitas Lambung Mangkurat
ISSN : 26559048     EISSN : 2655903X     DOI : http://dx.doi.org/10.20527
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Scientific Journal of Mechanical Engineering Kinematika (SJME Kinematika) is a mechanical engineering journal that focuses on Energy, Applied Mechanics, Materials, Manufacturing Processes. SJME Kinematics journal publish in Indonesian and receive in English. Scientific Journal of Mechanical Engineering Kinematika (SJME Kinematika) is an Open Access Journal that is available for free on online media. We are not only accept journals that focus on the derivatives of the four fields below, but also the possibility of an integrated focus of fields from several fields.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 166 Documents
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PENGARUH ALKALISASI HYBRID COMPOSITE BULU ITIK ALABIO DAN SERAT PURUN TIKUS TRHADAP KEAUSAN DAN KEKERASAN Akhmad Syarief; Dadang Aling Setiawan; Fadliyanur Fadliyanur
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 2 (2024): SJME Kinematika Desember 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i2.294

Abstract

South Kalimantan Province is the habitat for a type of plant known as Purun Tikus. This plant is traditionally used for handicrafts and serves as a habitat for Alabio ducks. Sodium hydroxide (NaOH) is an alkaline chemical compound that effectively removes and cleans residues in fibers. Therefore, this study investigates the composite materials reinforced with duck hair and Purun Tikus using an immersion alkalization method with NaOH. The objective of this research is to determine the effects of alkalization on a hybrid mixture of duck hair and Purun Tikus with a polyester matrix on wear and hardness properties, and to examine the influence of voids on perforated pores. The wear test was performed according to ASTM G99-04, and the hardness test followed the ASTM D-785 standard. Samples were prepared using the hand lay-up method with a composition of 78% polyester, 2% catalyst, and 20% reinforcement with a volume ratio of (10%:90%). The alkalization treatment times were set at 10, 20, 30, 40, 50, and 60 minutes using a 5% NaOH solution. The results indicated that the highest wear value was observed at the 10-minute alkalization time, while the lowest wear value was noted at the 60-minute alkalization time. Conversely, the highest hardness value was obtained at the 60-minute alkalization time, and the lowest at the 10-minute alkalization time. Therefore, alkalization time significantly affects the wear, hardness, and void properties of the composite materials.
OPTIMASI PARAMETER MESIN ULTRASONIC WELDING UNTUK PENYAMBUNGAN MATERIAL TERMOPLASTIK Dodi Mulyadi; Sukarman Sukarman; Amir Amir; Bella Sofiyanti; Azis Adhi Nugroho
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 1 (2024): SJME Kinematika Juni 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i1.296

Abstract

Ultrasonic welding is the joining of materials using of heat generated from high frequency mechanical movements. Known as an efficient process in many applications, such as in textile, packaging and automotive industries. One of the materials that can be joined using ultrasonic welding is thermoplastic material because there is no polymer degradation found in the product after the welding process. In most practices, parameters determining for ultrasonic welding machines uses a trial and error method, several parameters are determined to vary, such as welding pressure, welding time, holding time, drop speed and trigger pressure. To determine the correct variation of values, the Taguchi method is the right choice, determining the variable matrix is ​​very easy, commonly used, and many studies have proven that the Taguchi method is reliable. In this research, the product to be studied is a medical device, which uses thermoplastic polymer as its material. This research has produced the best variable variation of ultrasonic welding machine parameters: welding pressure of 20.00 psi; welding time of 0.21 seconds; holding time of 0.16 seconds; horn descent speed of 3.00 seconds; and trigger pressure of 4.00 psi. The defective products on appearance had reduced to 0.07% from the previous 1.08%.
ANALISIS KEKUATAN MEKANIK KOMPOSIT LIMBAH PLASTIK RECYCLE SINGLE USE DAN SERBUK KAYU Tsalsa Aundry; Aswan Munang
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 1 (2024): SJME Kinematika Juni 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i1.302

Abstract

Material development can minimize the impact on the environment during its life cycle. The life cycle starts from the composition of raw materials, production processes, use, and recycling systems. The composite is prepared using plastic straw waste material and wood dust using a polyester resin matrix. It is making composite specimens by compressing molding using a 12-ton capacity hydraulic press. Preparation of specimens with three different volume fractions. Specimen one (30% plastic straw, 70% wood dust), box specimen (40% plastic straw, 40% wood dust, and 20% polyester matrix), and specimen three (70% polyester matrix, 30% wood dust). Tensile testing was done six times using ASTM D3039 standards with a Computer Servo hydraulic universal testing machine. Impact testing was done six times with ASTM D256 using a Charpy impact tester machine. Based on the test results, it can be seen that the material composition of 40% wood dust, 40% plastic straw, and 20% polyester matrix has optimal tensile and impact test strength. The tensile and impact test results were 16 N/ and 1.27 Joules respectively. The combination of bonds between matrix and material fibers with three composition variations can be used as an alternative in developing advanced and environmentally friendly materials.
FABRIKASI DAN SIFAT-SIFAT MEKANIS KOMPOSIT BERBAHAN CANGKANG BIJI KARET (HEVEA BRASILIENSIS) Restu Budianto; Andi Idhil
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 1 (2024): SJME Kinematika Juni 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i1.308

Abstract

Rubber is one of the most abundant natural resources in Indonesia. Indonesia is the country with the second-largest rubber production in the world. Based on data from the Ministry of Agriculture, the area of national rubber plantations reaches an area of 3.67 Ha. Rubber seed has a shell that has not been utilized optimally; it is only burnt and not utilized. Utilizing the seed shell material rubber as a reinforcing material is expected to increase efficiency and economic value. This research was carried out by doing variations in the volume filler fraction with a polyester matrix of 20%, 30%, and 40% with the hand lay-up method. The variations applied were tested using tensile, bending and water absorption. The highest tensile strength results is obtained at a variation of 20% with a value of 15.38 MPa. The highest bending strength is obtained on the variation of 20% with a value of 181.15 MPa. The optimum water absorption value is obtained at a variation of 20% with a value of 0.53%.
ANALISIS HASIL PENGECORAN PASIR RODA GIGI LURUS BERBAHAN ALUMINIUM 1100 DAN 6063 TERHADAP SIFAT MEKANIK Ilham Azmy; Dinar Dwi Rachmadi
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 2 (2024): SJME Kinematika Desember 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i2.310

Abstract

Spur gear is a toothed-shaped machine component which works by friction each other to transmit high efficiency rotational movement on shafts. This requires spur gear to possess robust mechanical properties. The sand-casting technique is widely known as a simple manufacturing process to produce high quality mechanical products with less failure. Moreover, aluminium is an alloy which owns good mechanical properties, corrosion resistance and castability. Hence, the research aims to conduct manufacturing process of spur gear using sand-casting technique made from 1100 and 6063 aluminium which followed by comparing mechanical characteristics of hardness and wear resistance. The casting process initially begins by designing and fabricating patterns, then preparing the mold and silica sand along with the aluminium melting process at temperature 600oC in a furnace, which ends by pouring the molten aluminium into the sand mold. After the spur gear was obtained, mechanical testing was examined to evaluate its hardness and wear resistance values. From the results, it was clearly found that spur gear product made from aluminium 6063 possess high hardness value (58.4 HV) and the lowest wear rate reduction (0.000827 mm3/minute). Thus, spur gear made from 6063 aluminium has the best mechanical characteristics which affects long lifespan.
RANCANG BANGUN SISTEM PERINGATAN KANTUK PADA PENGENDARA SEPEDA MOTOR BERBASIS FUZZY LOGIC Daniel Moses Samosir; Aditya Bayu Setyaji; Ramdhani Ramdhani; Yusep Sukrawan
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 1 (2024): SJME Kinematika Juni 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i1.311

Abstract

Motorcycle riders are basically required to drive with awareness of orderly behavior on the road. However, the fact is that many motorbike accidents are still caused by negligence, one of which is drowsiness while driving. This research aims to develop a fuzzy logic-based drowsiness prevention tool for motorcyclists. This tool goes through 4 stages of testing, namely power supply, sensor, microcontroller and actuator. The results of testing are that the power supply on this tool functions well, the tools on the motorbike and helmet function well according to the program designed on the microcontroller, the pulse sensor designed for motorbikes does not function as it should, so for temporary research the Max sensor is used 30100 as a pulse reader, buzzer, vibrator and relay in this tool functions well and is more accurate compared to previous research according to the fuzzy rules that have been programmed. The use of sensors on the wrist has proven to be effective in detecting pulse, so that the accuracy of sleepiness readings is in line with pulse readings, namely 100%, which is a follow-up to previous research. Fuzzy logic on the device influences the microcontroller to work accurately according to what has been programmed.
POLA ALIRAN UDARA PADA TURBIN ANGIN SAVONIUS HELIKS DENGAN VARIASI JUMLAH SUDU MENGGUNAKAN METODE CFD Muhammad Harist Mishbahuddin; Taufik Wisnu Saputra; Danar S. Wijayanto
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 2 (2024): SJME Kinematika Desember 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i2.313

Abstract

The availability of fossil resources is decreasing, cause government and private sectors to race in developing renewable energy. One solution is to create Wind Power Plants to meet energy demands. The Savonius turbine, also known VAWT, this great potential to meet small-scale energy needs. Savonius turbines have lower performance compared to other types. This performance needs to be enhanced through design modifications, such as varying the number of blades. This research purpose is to analyze effect number of blades on performance of helical Savonius turbines. This research focuses on airflow patterns with varying blade numbers in helical Savonius turbines. These turbines numerically studied using Computational Fluid Dynamics (CFD) approach with ANSYS Fluent. Each variation of blade numbers will simulate at wind speeds between 1 to 5 m/s. Numerical testing results will provide visualizations in form contour and vector within pressure or velocity scope for each variation. Based on visualization of numerical testing results, found that number of blades affects flow patterns. Increasing the number of blades increases turbulence flow. Pressure on convex surface also increases with the addition of blades. These two airflow phenomena reduce turbine performance, so two blades produce most optimal performance due to minimal resistance they experience.
PENGARUH SUDUT PENGAPIAN DAN DURASI INJEKSI PENGGUNAAN ECU BERBASIS ARDUINO TERHADAP PERFORMA MOTOR 110CC FI Tabah Muhamad Khadri; Taufik W. Saputra; Danar S. Wijayanto
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 2 (2024): SJME Kinematika Desember 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i2.317

Abstract

The advancement of automotive technology in Indonesia has been rapid, particularly in motorcycle production, which reached 5,057,516 units in 2021 according to AISI data. Manufacturers now introduce models equipped with injection ignition systems using Electronic Control Units. These ECUs control actuators based on the inputs they receive. Arduino-based programmable ECUs are available to improve performance by adjusting ignition timing and fuel injection duration. This research aims to determine the impact of these adjustments on the torque, power, and fuel consumption of 110-cc FI motorcycle to find the best variations for optimal results. An experimental method was used, testing the Arduino-based programmable ECU against the standard ECU on 2014 Honda Vario 110-cc FI. Tests included variations in ignition timing of +20, +40, +60, +80, +100 degrees before TDC from the standard and fuel injection duration variations of +5%, +10%, and +15%. The highest torque was achieved with ignition timing variation of +40 degrees and injection duration of +5%, reaching 16.98 N.m. Maximum power was observed at +20 degrees timing and +10% injection, reaching 7.03 horsepower. Optimal fuel consumption was found at ignition timing of +20 degrees and injection duration of +5%, with rate of 4.15 ml/min, compared to the standard ECU.
ANALISIS PROSES PIROLISIS LIMBAH PLASTIK HDPE DAN PET: PENGARUH TEMPERATUR DAN WAKTU REAKSI DALAM UPAYA DAUR ULANG PLASTIK A yan Sabitah; Ichwan Noor Ardiyat; Misbachudin Misbachudin; Ikna Urwatul Wusko; Rahma Pitria Ningsih
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 1 (2024): SJME Kinematika Juni 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i1.318

Abstract

Plastic waste is a significant environmental challenge, but its management is still not fully effective. Common methods such as garbage disposal, combustion, and recycling have their limitations, especially the release of harmful compounds during low-temperature plastic burning. Therefore, research continues to look for better solutions. One promising approach is pyrolysis, a process in which plastic molecules break down at high temperatures in an inert gas environment. Pyrolysis produces solid, liquid, and gas products, with liquids potentially functioning as biofuels after further repairs. The study discussed the influence of temperature and time on the pyrolysis of HDPE and PET plastics. The results showed that temperature is a critical factor, with a limited reaction temperature between 500 °C and 700 °C. Results of the pyrolyse process include tar/liquid and char/ solid residues. Strangely, 3 kg HDPE produce the highest amount of tar, about 973 ml, while 3 kg PET produce the least, about 89 ml. Overall, achieving a uniform heat distribution and optimal temperature is crucial to improving the efficiency and quality of the pirolysis product.
DETEKSI CACAT PADA CARBON FIBER REINFORCED POLYMER BERDASARKAN KOEFISIEN KORELASI PEARSON DARI SINYAL ECHO ULTRASONIK Yusuf Giri Wijaya; Suprijanto Suprijanto; Afid Nugroho; Rhakamerta Hijazi; Damar Rastri Adhika
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 2 (2024): SJME Kinematika Desember 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i2.322

Abstract

Carbon fiber reinforced polymer (CFRP) is a composite material widely used in the aerospace, automotive, and marine industries due to its high strength and low weight. However, the reliability of CFRP can be compromised by internal defects occurring during manufacturing or use. This study aims to detect defects in CFRP using the Pearson correlation coefficient from ultrasonic echo signals. This method utilizes ultrasonic waves to identify defects based on changes in signal patterns. The reference signal is obtained by averaging the signals from several defect-free locations. Variations in the measurement signals compared to the reference signal are quantified using the Pearson correlation coefficient to classify defect-free and defect-containing areas. The test samples consisted of thin CFRP plates with artificial defects created using Teflon material in the form of circles with a radius of 15 mm, placed at two different depths. The results indicate that the Pearson correlation coefficient effectively distinguishes between defect-free and defective areas. Defect-free areas showed correlation values in the range of 0.97 to 1, while defective areas showed low correlation values in the range of 0 to 0.36.

Page 12 of 17 | Total Record : 166

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