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Journal : AUSTENIT

Rancang Bangun Mesin Pengiris Tempe Otomatis Dengan Pengaturan Ketebalan Hendriko, Hendriko; Hura, Menti Diana; Jaenudin, Jajang; Rahmawaty, Made; Khamdi, Nur
AUSTENIT Vol. 14 No. 1 (2022): AUSTENIT: April 2022
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v14i1.4521

Abstract

Tempe is a traditional Indonesian food that can be processed into various derivative food products, including chips and mendoan. Many MSMEs have developed tempe chip products, but the tempe slicing process is still done manually. The manual process has the disadvantage of taking a long time, requiring operators, and inconsistent results. In this study, an automatic tempe slicing machine was developed. The developed machine uses a control system so that it can adjust the thickness of the slices by manipulating the rotational speed of the driving motor. The mechanical design of the tempe pushing system and hopper causes the process to take place continuously. Tests to determine the performance of the machine in producing tempe slices, and to determine the capacity of the machine have been carried out. The results show that the machine can slice tempe well starting from a thickness of 2 mm. The test results also show that the deviation of the thickness of the slices is not significant, which is between -2.2% - 2.5%. Machine capacity depends on the thickness of the slices. For 3 mm slices, the machine capacity is 22 29 kg/hour. Meanwhile, the machine capacity for slice thickness of 5 mm and 7 mm is 31.85 kg/hour and 38.96 kg/hour, subsequently.
DESIGN OF AUTOMATIC BREAD CUTTING MACHINE Rahmawaty, Made; Yolanda, Rieke; Hendriko, Hendriko
AUSTENIT Vol. 15 No. 2 (2023): AUSTENIT: October 2023
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v15i2.6766

Abstract

Before being marketed, white bread will usually be cut first. Small to medium scale bread entrepreneurs still use conventional tools in the form of standard bread knives, whose use is still less effective. This bread cutting machine is designed for small to medium sized bakers to make their work easier and more efficient. This machine is designed using a vertical blade movement method with an AC motor as the driving force and is controlled using a sequential circuit. The initial process of this machine is to press the pushbutton, then place the bread on the bread tray which has a proximity sensor as a bread detector and the cutting process is carried out, when the sensor does not detect the presence of bread the machine will stop working automatically. Electronic system control is carried out sequentially which is more efficient in its application. From the test results obtained that the thickness of the bread is 12 mm. The main driver of the cutting is 1 phase and uses a dimer to adjust the rotational speed of the 1 phase motor. The cutting process with a maximum motor speed can cut 1 loaf for 38 seconds.
RANCANG BANGUN SISTEM PENDINGIN DAN PENCUCI PADA MESIN PENGOLAH BIODIESEL DENGAN BAHAN BAKU MINYAK JELANTAH Rahmawaty, Made; Fauzan, Muhammad Hilmy; Hendriko, Hendriko
AUSTENIT Vol. 16 No. 1 (2024): AUSTENIT: April 2024
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v16i1.6774

Abstract

There are three stages for processing biodiesel-based used cooking oil: the esterification process, cooling and purifying FAME, and filtration of crude biodiesel. The time required for purifying FAME is about two until six hours because it has to follow the sedimentation process several times. Therefore, this research developed a biodiesel purification machine equipped with a cooling system. The cooling system aims to make the sedimentation process faster. The cooling system uses a thermoelectric module attached to a pipeline from the esterification tank to a purification tank. This machine is also equipped with a control system and valve driven by motor to perform the process automatically. The design of the biodiesel purification machine has been successfully developed and has followed a series of tests. The test results on the accuracy of flowmeters show that they work correctly. The application of a cooling system is proven to reduce the sedimentation process time to 20 minutes, which in turn shortens the time for the biodiesel purification process, which in turn shortens the time of the biodiesel purification process. In addition, the control system allows the machine to operate automatically, thereby reducing the operator's need significantly.
DEVELOPMENT OF UNDERWATER ROV (REMOTELY OPERATED VEHICLE) SYSTEMS AND MECHANISM Tianur, Tianur; Suswanto, Bagas Prayoga Suswanto; Hendriko, Hendriko; Rahmawaty, Made
AUSTENIT Vol. 15 No. 2 (2023): AUSTENIT: October 2023
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v15i2.6957

Abstract

  Remotely Operated Vehicle or abbreviated as ROV is an underwater explorer robot where the robot is controlled remotely by an operator using a remote control system.  Water ecosystems certainly have various kinds of hazards that cause harm to divers, such as wild animals, waters contaminated with toxic waste, limited oxygen, and many other risks. Based on these problems, research was carried out, namely the Design and Development of Underwater ROV (Remotely Operated Vehicle) Mechanisms and Systems where the tool built is an underwater robot that uses 8 DC motors to be able to perform 12 types of movements under water. The final result obtained by the ROV is that it is able to perform all of these movements except for the right somersault and left somersault. The speed and direction of rotation of the motor is controlled by a device, namely the BTS7960 motor driver. This robot aims to measure pressure and temperature and capture images underwater to a depth of 4m. Pressure and temperature measurements were made using a BMP180 pressure sensor and a DS18B20 temperature sensor where the measurement results will be displayed on a 16x2 LCD. Based on the test results, the pressure sensor has an error rate of 3.6% and a temperature sensor of 0.34%. Images and videos are captured by a device, namely a CCTV camera where the device is connected to a laptop device as a monitor. The test produced results in the form of images and videos that were quite clear.