JTRM (Jurnal Teknologi dan Rekayasa Manufaktur)

Perilaku Merokok Terhadap Prestasi Belajar Mahasiswa Polman Bandung

Hanif Azis Budiarto — 2025-04-21

Student smoking seems to be commonly seen around campuses in Indonesia. However, many studies state that there are negative impacts of smoking on cognitive abilities, physical abilities, health, and so on. This can impact students' ability to study optimally and get the best learning achievements. No study explores the conditions regarding smoking and non-smoking students of Polman Bandung, let alone examining their learning achievements. This research reviews student smokers and non-smokers and their learning achievement. The research method is descriptive qualitative, and questionnaires were distributed to students in May 2023 using a Google Form. There were 207 respondents who filled out the questionnaire, of which 71 were smokers and 136 were non-smokers. The results show that non-smoking students have better academic achievement or GPA than smoking students. It is recommended that campuses minimize the increase in the number of smokers to develop the optimization of students' abilities so that they can improve their learning achievements.

Analisis Springback Pelat ST 37 dengan Tegangan Tarik 343 N/mm2 Tebal 1,98 mm pada Proses V-Bending Dengan Sudut 120, 135, dan 150 serta Arah Tekukan Berlawanan Grain Direction Pelat

Hartono Widjaja — 2025-04-29

Springback is a deviation in the bending angle which tends to return to its original position due to the remaining elasticity of the material in the bending area which crosses the plastic material boundary. The five main parameters that influence springback are punch/die profile, work material, material properties, bending technique, and process conditions. This research focuses on the angle of impact which influences the amount of springback. Tests were carried out with punch angles of 120˚, 135˚, and 150˚ using an AIDA direct servo press machine forming the DSF-C1-A series. The results show that the larger the punch angle, the smaller the springback. All angles produce negative springback values, with the 150° strike angle of -0.990° closest to the target angle. The amount of springback can be calculated using a simple linear regression formula. The angular deviation due to springback can be used as a compensation value in making bending tools to obtain the desired bending results.

Perancangan Konveyor Pembersih Kotoran Ayam Broiler Bertingkat Otomatis dengan Metode Perancangan VDI2222

Bustami Ibrahim — 2025-04-29

This research was conducted based on a request from PT Paranje Rizqi Cileuncang to Politeknik Manufaktur Bandung to design a broiler chicken manure cleaning system. The system was designed according to the chicken coop construction built by PT Paranje Rizqi Cileuncang in Kabupaten Garut, measuring 17 meters in length, 5 meters in width, and 7 meters in height, with 5 levels and 2 columns of cages. The research aimed to design and determine the cost of manufacturing the broiler chicken manure cleaning system. The design process followed the VDI 2222 methodology, which includes planning, conceptualizing, designing, and finalizing. The results of this study include a draft, 3D modeling, working drawings, and a detailed cost estimation. The designed system is a belt conveyor placed under the chicken coop, equipped with a drive motor, rollers, pulleys, and a belt cleaner. The estimated cost of the conveyor system is IDR.181,463,156

Monitoring dan Notifikasi Crust Breaker pada Tungku Reduksi

Muhammad Iqbal Imanuddin Abbas — 2025-05-09

Crust Breaker is an equipment in aluminum reduction furnace that functions to break the crust on the electrolyte surface. So far, the operational team has identified abnormal crust breakers manually because there is no abnomal crust breaker detection tool available. For this reason, the tool to detect when an abnormal crust breaker occurs is designed by making a prototype crust breaker and measuring the implementation directly on the reduction furnace which can be monitored in real time through the website and providing notifications when abnormal crust breaker conditions occur via Telegram, as well as adding light and buzzer indications in the room. The results showed that the use of toggle switches with normal crust breaker conditions got an average detection response of 86.54% and abnormal crust breaker conditions got an average detection response of 90.51%, as well as direct implementation testing on a reduction furnace with a time setting of less than 10 minutes, the crust breaker provided an actual notification of not touching the electrolyte. Based on these results, the right time to ensure the condition of the abnormal crust breaker is ≥10 minutes.

Deteksi dan Interpretasi Tulisan Tangan Bahasa Indonesia melalui Pemrosesan Citra dan Optical Character Recognition (OCR)

Susetyo Bagas Bhaskoro — 2025-05-09

This research develops a handwriting recognition system using OCR based on DB_Resnet and CRNN_VGG16 pre-training architecture integrated with hardware such as Arduino Uno, stepper motor, infrared sensor, camera, and aluminum frame. The system is equipped with a web-based interface developed using Flask. The test shows an average text recognition accuracy of 51.70% with validation using the KBBI dataset. The results show the successful integration of OCR technology with hardware and software, which is expected to increase the efficiency of handwriting data processing.