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Jurnal Teknologi
Published by Politeknik Negeri Lhokseumawe
ISSN : 14121476     EISSN : 25500961     DOI : http://doi.org/10.30811/teknologi
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering
Jurnal Teknologi is a peer-reviewed journal that aims at the publication and dissemination of original research articles on the latest developments in all fields of technology and engineering sciences. The journal publishes original papers in Indonesian and English, which contribute to the understanding of engineering science and the improvement of engineering technology. Papers may be theoretical, experimental, or both, and applied engineering science and technology. The articles submitted to Jurnal Teknologi should be unpublished before and not under consideration for publication elsewhere. The scope of Jurnal Teknologi includes a wide spectrum of technology and engineering science subjects including: Civil engineering; Mechanical engineering; Chemical engineering Electrical engineering; Information and technology; Computer science and engineering; Materials science and engineering; Renewable energy engineering;
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 76 Documents
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Rancang Bangun Alat Keamanan pada Ruangan Menggunakan Arduino dan Sensor PIR Berbasis SMS Gateway Teuku Muhammad Razi; Ipan Suandi; Muhammad Muhammad
Jurnal Teknologi Vol 22, No 1 (2022): April 2022
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v22i1.2889

Abstract

The design of security devices in the room using Arduino and PIR sensors based on SMS Gateway has been carried out to anticipate security problems in the room. The purpose of this study is to design and build a security system in a room with a PIR sensor based on SMS Gateway, where when someone tries to steal, if the homeowner is at work or is far from the scene, they can immediately go to the location. The system is designed so that it can be activated and deactivated remotely via SMS (Short Message Service). The test method used is to determine the sensitivity of the sensor in detecting objects both at the closest and furthest distances to objects in the room. The results of the tests carried out are measuring the voltage when the tool is used, the sensitivity distance of the sensor and SMS commands and the response time of sending SMS. From the test results, it is found that this security system is able to provide or send a danger signal via SMS wherever we are. The results of the voltage measurement obtained are 5 volts on the PIR sensor, microcontroller, and SIM800 module. The PIR sensor used can detect movement with a maximum distance of 600 cm. The average SMS response time was 8.93 seconds.
PENGUKURAN APTITUDE DENGAN UJI KRAEPELIN MENGGUNAKAN METODE LINEAR CONGRUENTIAL METHOD (LCM) Qatrun Nada; Muhammad Arhami; Zulfan Khairil Simbolon
Jurnal Teknologi Vol 22, No 1 (2022): April 2022
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v22i1.2418

Abstract

Psychological tests are an important need in various spaces of human life. Not only related to matters of a clinical nature, psychological tests are also used in the workspace. Psychological tests are carried out as an effort to find out by knowing more about a person's personality. One of the methods used by psychologists is Kraepelin to get personality types. In practice, psychological tests in understanding an object, namely humans with all their attitudes and behavior, still use the old way. Psychological tests still use sheets or series of questions given to related objects and the calculation of results or assessments is still done manually. Errors in the assessment will affect the results so that it will lead to inappropriate perceptions. Making questions requires time and high accuracy, so the system is built using the Linear Congruential Method (LCM). LCM method is used to generate random numbers with better access time performance in terms of complexity and optimality. The 20 minute test application consists of 40 columns and 60 rows of questions with a time limit of 30 seconds for each column. The website-based Kraepelin test application can support all related parties, both the test organizers and test takers, to get real-time and accurate test results by applying the Kraepelin test using the LCM method. The implementation of the Kraepelin test is in accordance with the purpose of using the test, namely as a tool to measure aptitude (speed, accuracy, stability and work endurance). Based on the test results, the calculation of the score using the system will be faster with a calculation time of 2 seconds while the manual calculation is 5 minutes.
Desain Simulasi Visual HMI (Human Machine Interface) Antarmuka PLC guna Monitoring Data Parameter Air Syaiful Rachman; Muhammad Wahyu; Sarifudin Sarifudin; Zaiyan Ahyadi
Jurnal Teknologi Vol 22, No 1 (2022): April 2022
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v22i1.2861

Abstract

Desain sistem monitoring simulasi  pada parameter air kekeruhan,suhu,TDS,warna menggunakan HMI (human machine Interface) dikomunikasikan dengan peralatan PLC.Berdasarkan hasil simulasi  dan  ujicoba diperoleh nilai variable analog input yang diteliti adalah suhu diperoleh tegangan pada saat normal 2 derajat pada pengukuran pada alat ukur sebesar 2 mV, keadaan parameter air tidak normal dengan memberikan input data sebesar 3 derajat dan hasil pengukuran menunjukkan sekitar 3 mV. kekeruhan diperoleh pada saat normal 5 skala NTU  pada pengukuran sebesar 5 mV, Sedangkan pada keadaan tidak normal hasil dengan input data 6 skala NTU menghasilkan sekitar 6 mV. TDS diperoleh tegangan pada saat normal 1000 mg/l. Kemudian pada pengukuran menggunakan alat ukur volt meter diperoleh sebesar 1V, Sedangkan pada keadaan parameter air tidak normal input data sebesar 1500 mg/liter menghasikan nilai 1,5V. Warna air diperoleh tegangan pada saat normal 15 skala NTU  pada pengukuran pada alat ukur volt meter sebesar 15 mV, Sedangkan pada keadaan parameter air tidak normal hasil sekitar 16 mV. Sehingga pemilihan sensor harus dalam range nilai tegangan output dari perangkat sensor dan tranducer parameter air yang  harus menyesuaikan input dari analog PLC
Pengaruh Variasi Temperatur Tempering terhadap Kekerasan Baja JIS SUP 9A pada Mata Pisau Nanda Aulia Fadli; Adi Saputra Ismy; Irwin Syahri Cebro
Jurnal Teknologi Vol 22, No 1 (2022): April 2022
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v22i1.2891

Abstract

The effect of tempering temperature variations on the hardness of the blade has been carried out on SUP 9A leaf spring steel material. The tempering process was carried out at temperatures of 300°C, 400°C, and 500°C with a holding time of 15 minutes and cooled in free air. Specimens without heat treatment and tempering results were tested for hardness using the Rockwell hardness test method and microstructure analysis using an optical microscope. From the results of the study, it was found that the hardness value obtained on the raw material specimen without heat treatment obtained a hardness value of 60.50 HRC, while the tempering temperature variation obtained the hardness value on specimen B (tempering temperature 300°C) of 66.90 HRC, specimen C (tempering temperature 400°C) of 64.70 HRC, while specimen D (tempering temperature 500°C) obtained a hardness value of 65.80 HRC. From the results of the specimen hardness test, the hardness value after heating was higher than the hardness value without heating treatment. Microstructural analysis shows that the higher the given temperature, the larger the grain of the steel structure looks. Without heat treatment the microstructure of the specimen is an irregular black bainite. Meanwhile, by heat treatment, the microstructure of the specimen is irregular black martensite.
Kajian Pengaruh Rapat Arus pada Pelapisan Hard Chrome terhadap Kekerasan Permukaan Baja Karbon Rendah (ST 37) Nurdin Nurdin; Ichsan Maulana; Yuniati Yuniati; Ismi Amalia
Jurnal Teknologi Vol 22, No 1 (2022): April 2022
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v22i1.2902

Abstract

AbstractThe hard chrome process is one of the most widely used metal finishing methods to avoid corrosion, besides that hard chrome can improve metal quality such as hardness. The Hard chrome process is carried out by varying the current density of 30 Amp/dm2, 30 Amp/dm2, 40 Amp /dm2 and 50 Amp/dm2 with a coating time of 40 minutes at a solution temperature of 50 ᵒC. After the hard chrome process, the surface hardness test was carried out using a microvickers indent with a loading of 25 g.f. The results showed that the layer thickness and hardness increased when the current strength increased. The highest hardness value occurred at a current of 4 amperes of 551.6 VHN and a layer thickness of 1.80 microns.
Penggunaan Amilum sebagai Pelapis Anti Korosi pada Baja Karbon dalam Lingkungan Asam Klorida 0,5 M Muhammad Salahuddin; Irwan Irwan; Cut Aja Rahmawati
Jurnal Teknologi Vol 22, No 1 (2022): April 2022
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v22i1.2876

Abstract

The purpose of this paper was to determine the affect of amylum concentration and immersion time on the corrosion rate. Amylum is used as an anticorrosive coating on carbon steel in 0,5 M hydrochloric acid  environment. Amylum concentration and immersion time affect the corrosion rate. The longer immersion time, the corrosion rate increases while the higher the concentration, the corrosion rate decreases. The highest corrosion rate was obtained at 3.58 mpy while the lowest corrosion rate was 1.24 mpy, Corrosion rates in metals can be prevented by the coating method
Pengaruh Variasi Arus Pengelasan Kombinasi GTAW dan SMAW terhadap Sifat Mekanik pada Carbon Steel A53 GR B Hamdani Hamdani; Adi Saputra Ismy; Muhammad Rizki
Jurnal Teknologi Vol 22, No 2 (2022): Oktober 2022
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v22i2.3265

Abstract

The piping system in process industry plays an important role and generally is connected by welding where the welding uses a certain current, therefore this study analyzes the appropriate current variation for welding combinations between GTAW and SMAW on A 53 GR B material using 3 variations of currents, namely 70A, 100A, and 120A. The results of the stable hardness test occurred in specimens with a holding time of 20 seconds with a hardness value of 33.67 HRC on base metal 1, on HAZ 1 of 36.00 HRC, 38.83 HRC on weld metal, 38.83 HRC on HAZ 2, on base metal 2 of 32.00 HRC. The value of the impact energy of the A3 specimen with a value of 142 joules and an impact value of 3.55 j/mm2, The value of the impact value of the B3 specimen with a value of 92 joules and an impact value of 2.30 j/mm2.
Produksi Syngas melalui Crossdraft Gasifier ditinjau dari Variasi Temperatur dan Massa Jerami Padi sebagai Filter Ahmad Gilang Abdillah Yama; Muhammad Rafiq Vitruvi; Ayu Andira; Arizal Aswan; Yohandri Bow; Ida Febriana; Adi Syakdani; Rusdianasari Rusdianasari
Jurnal Teknologi Vol 22, No 2 (2022): Oktober 2022
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v22i2.3179

Abstract

Utilizing alternative energy is one strategy for resolving the petroleum energy dilemma. There are a number of ways to use coal as an alternative energy source, including the gasification process. In the presence of less oxygen than necessary for stoichiometric combustion, solid fuels are thermochemically converted into combustible fuels during the gasification process. The temperature and mass changes of rice straw used as a syngas filter were examined in this work in order to create a crossdraft gasifier prototype. Cleaning systems are directly incorporated into gasifiers to create them. In order to produce syngas of excellent quality, this study set out to establish the ideal temperature and rice straw filter mass. It also sought to identify the maximum LHV value for changes in rice straw filter mass. According to the study's findings, a temperature of 650 °C was needed to achieve a decent thermal efficiency of 16.56%, and a mass of 500 g of rice straw served as the ideal filter mass for syngas with a quality composition of 9.8% CO, 6.32% H2, and 1.97% CH4. The mass of 500 grams of rice straw with the greatest LHV value was 14,529.4 Kj/Kg.
Perancangan Software Robot Pencari dan Penyusun Menara Lagori pada ABU Robocon 2022 Salahuddin Ali; Yusman Yusman; Bakhtiar Bakhtiar; Muhammad Raju
Jurnal Teknologi Vol 22, No 2 (2022): Oktober 2022
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v22i2.3259

Abstract

Lagori is a traditional game and one of the games originating from southern India. This game is played by two teams, where the first team is the seeker and the second team is the pitcher. The game starts by throwing the ball by the seeker to break the stone tower called Lagori. While the seeker tries to pile up more stones, the hitter throws the ball to annoy them. The purpose of this final project is to design a search robot and a Lagori tower to take part in the Indonesian Robot Contest (KRI) 2022. This search robot and Lagori tower are designed based on the Contest procedure using the Atmega2560 microcontroller as a microcontroller, pneumatics are used to pull and remove the gripper, robot The search engine and the Lagori tower use a semi-automatic system, so a wireless joystick is used as a controller, making it easier for users to control it. The results of the search robot and tower testing are in accordance with the algorithm that has been embedded in the 2560, for the pwm setting it varies between 100 and 110 and is used as a speed controller and the robot moves directions such as forward, backward, forward, backward, left, and to the right. The I/O ports on the microcontroller are given logic (logic 1), while for pneumatics repelling and pulling the gripper arm, gripper motors, gripper motors, bohh ball drive motors, and off logic firing motors (logic 0). 
Penyulingan Daun Temurui (Murraya Koenigii) dengan Metode Distilasi Uap sebagai Salah Satu Cara Meningkatkan Nilai Ekonomis Raju Pamungkas; Adriana Adriana; Muhammad Yunus
Jurnal Teknologi Vol 22, No 2 (2022): Oktober 2022
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v22i2.3121

Abstract

Temurui leaves or curry leaves (Murraya Koenigii) are widely available in Aceh, this plant is one of the wild plants, but unfortunately it is only used as a cooking spice by the community. In this study, the temurui leaves were distilled to extract the essential oil, thereby increasing the economic value of the temurui leaves. The tests carried out to determine the criteria for the essential oil of temurui leaves (curry leaves) were yield, density, refractive index and GC-MS analysis. The temurui leaf distillation is operated by the steam boiler distillation method and uses leaves that have been aerated, using variations in drying 0, 1, 2, and 3 days and distillation time variations of 4, 5, 6, and 7 hours, with a distillation time of 7 hours. hours and 1 day of drying to get the best yield and distillate with a value of 21.5 ml. Based on the research conducted, it can be concluded that the longer drying time can affect the yield obtained, and the longer the refining time, the more oil distillate is obtained. The results of GC-MS obtained Caryophyllene of 76.33% which has a function as an antibacterial, and -Humulene 18.49% which has a function as a prevention of cancer cell growth, with the highest density of 0.8928 and the result of a refractive index of 1.5128. it has fulfilled the SNI for teumuri leaf essential oil. Keywords: Murraya Koenigii, Temurui Leaves, Distillation, Curry Leaves. 

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