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All Journal LONTAR Jurnal Teknik Mesin Undana (LJTMU ) JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN JTERA (Jurnal Teknologi Rekayasa) AL-JAZARI JURNAL ILMIAH TEKNIK MESIN SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Fisika : Fisika Sains dan Aplikasinya Abdi Masyarakat Jurnal Mesin Nusantara Journal Of Human And Education (JAHE) Jurnal Pengabdian Vokasi Jurnal Pepadu Jurnal Lembaga Pengabdian Kepada Masyarakat Undana
Rima Nindia Selan
Universitas Nusa Cendana
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PERANCANGAN BODI MOTOR MENGGUNAKAN SERAT LONTAR DENGAN METODE VDI 2222 Jefrianus Bere; Jefri S. Bale; Rima Nindia Selan
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v8i1.11828

Abstract

The design of several vehicles by changing the design of the vehicle body and household materials using composites has already been carried out in Indonesia using various methods and using natural materials that are easy to find. A unique motorcycle body design can give an attractive impression from the appearance of the motorcycle in use, seen from the new physical conditions with the image of a motorcycle that is easily engineered in such a way that it becomes an opportunity for motorcycle manufacturers to design motorcycle bodies with natural materials that can received potential market share. One of the natural materials that can be made or designed to be used as an alternative to composite raw materials as motor designs that are easy to find in the NTT region is one of them is palm fiber, whose use is still limited.
PERANCANGAN ALAT RESIN TRANSFORMER MOULDING (RTM) SEBAGAI MESIN PENCETAK SPESIMEN KOMPOSIT BERPENGUAT SERAT ALAM DENGAN SISTEM INJEKSI MENGGUNAKAN METODE VDI 2221 Jefri Samuel Bale; Rima Nindia Selan; Antonius Fandie Tei Seran
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 7 No 2 (2022): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v7i2.9341

Abstract

Perkembangan di bidang teknologi dan sciences belakangan ini mendorong material komposit banyak di gunakan pada berbagai macam produk. Komposit yang diperkuat oleh serat alam telah banyak digunakan untuk aplikasi seperti aerospace, otomotif, alat olahraga, papan sirkuit, dan lain-lain. Dalam sebuah perancangan terdapat beberapa metode yang biasa digunakan, salah satunya adalah metode VDI 2221. Metode VDI 2221 menggunakan pendekatan sistematik terhadap desain untuk sistem teknik dan produk teknik. Metode VDI 2221 ini mempermudah perancang untuk membuat suatu produk sehingga perancangan produk dapat tercapai. Oleh karena itu penulis mempunyai rancangan untuk membuat alat resin transfer moulding (RTM) sebagai mesin pencetak spesimen komposit serat alam dengan sistem injeksi menggunakan metode VDI 2221 di harapkan dengan teknologi sistem injeksi bahan komposit yang dihasilkan memiliki kualitas yang baik. Hasil perancangan mesin pencetak spesimen komposit berpenguat serat alam ini berdimensi panjang 110 cm, lebar 35 cm dan tinggi 60 cm
Desain Cold Storage untuk Pembekuan Ikan Laut Menggunakan Perangkat Lunak Coolselector®2 Selan, Rima Nindia
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 9 No 01 (2022): April 2022
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v9i01.8047

Abstract

The process of cooling and freezing carried out on fish products is one of the preservation methods that apply a cooling machine in its operation. The refrigeration machine used applies a steam compression refrigeration system with R404A refrigerant as its working fluid. A design that is not following the standards can result in significant losses both in material and economic terms. Besides, the wrong model can also cause the performance of the engine to cool down. The purpose of this study is to design and analyze the performance of cold storage for freezing fish using Coolselector®2 software version 3.6.1. Performance analysis is based on superheating and subcooling temperature variations to determine its effect on the performance of the cooling engine. Changes for superheat temperatures carried out at the 8K, 9K, 10K, 11K and 12K levels while the subcooling temperature is considered constant at the 3K level. Variations were made at subcooling temperatures at the 3K, 4K, 5K, 6K and 7K levels with superheat temperatures considered consistent at the 5K level. The result of cold storage room design shows that the room has a cooling capacity of 14.54 kW. Analysis of the performance of the engine coolant design shows that the refrigeration machine has excellent performance. It will be proved by the higher subcooling and superheat temperatures, the COP also increase. The most top COP is at the 12K superheat temperature level of 2.045, while for the subcooling temperature at the 7K level of 3.144
Implementasi Konsep Ergonomi pada Penggunaan Alat Tenun Tradisional Rumah Tenun Kampung Sabu Selan, Rima N.; Tualaka, Theodora M. C.; Manu, Ariency Kale Ada
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 9 No 02 (2022): Oktober 2022
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v9i02.8325

Abstract

HIX symbolize human work from beginning to end. "X" is a variable for: design, manufacturing, test, and so on. “HI” symbolizes human integrated. Human Integrated System (HID) is a system designed with the capabilities and limitations possessed by humans so that the results of the design can increase effectiveness. Occupational diseases are caused by work and work attitudes. One of the occupational diseases of the spine is lower back pain, which arises due to a static position at work and is continuous. Every year 15%-45% of adults suffer from low back pain and generally occurs at the age of 35-55 years. The application of ergonomics is a design activity or redesign that is adapted to technological advances as well as anatomy, psychology, industrial medicine. The sitting position during the process of carrying out weaving activities which lasts a long time with a time of 8 hours per day, causes the sitting position to become less comfortable and results in complaints of pain in the back or spine. The ultimate goal of this study is to implement the concept of ergonomics in the use of traditional looms so as to reduce complaints of pain or spinal pain from weavers
Modifikasi Dinding Bentur Dan Perlakuan Awal Pada Alat Pemecah Kemiri Manoh, Luter Imanuel; Pell, Yeremias M; Selan, Rima Nindia
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 10 No 02 (2023): Oktober 2023
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v10i02.14118

Abstract

Masalah yang dihadapi para petani adalah pada pemecah cangkang kemiri yang dibuat sebelumnya masih memiliki kekurangan yaitu dari segi produksi, Proses pemecahan biji kemiri biasanya dilakukan oleh masyarakat secara konvensional yaitu menggunakan palu karet, dari prinsip kerjanya secara manual tentu cara ini tidak terlalu efektif dari sisi tenaga dan waktu. Oleh karena itu sudah dirancang mesin pemecah cangkang kemiri secara mekanik, agar proses produksi bisa berlangsung dengan produksinya yang lebih besar. Hal ini perlu di modifikasi dinding bentur dan perlakuan awal pada alat pemecah kemiri sehingga memperoleh hasil yang lebih baik yaitu isi kemiri utuh diharapkan lebih banyak dari isi kemiri yang hancur.
Pengembangan Alat Pencetak Pelet Untuk Pakan Ternak Dengan Skala Ekonomis Farus, Febrianus; Jasron, Jahirwan Ut; Selan, Rima Nindia; Weo, Napsiyana Asti
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 11 No 01 (2024): April 2024
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v11i01.16996

Abstract

A pellet printing machine is a device specifically designed to produce pig feed using a 1 HP motor with a rotation speed of 1400 RPM. This machine is designed in a vertical form with an internal pressing screw, called a roller. The pressing screw will press the organic mixture towards the perforated printing screen with a hole size of 5 mm to form pellets. This research aims to design a pig feed machine and test its operation over a specific period. The testing of this machine involves collecting experimental data through three repetitions with a mixture weight of 5 kg, consisting of 1 kg of fish meal, 2 kg of organic waste, and 1 kg of rice bran. The collected data includes the capacity of the printed feed over a specific period and the percentage of unprinted material. The results show that the machine can produce pellets with an average effective capacity of 3733.33 g/second and an average yield of 3.33% unprinted material. The production rate achieved is 8.373 kg/hour.
Studi Simulasi Pengaruh Temperatur Evaporasi Terhadap Kinerja Energi Siklus Rankine Organik dengan Fluida Kerja R245FA, R515A, dan R1233ZD Dwinanto, Matheus Magnus; Selan, Rima Nindia; Pala, Elshaday Y.
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 11 No 01 (2024): April 2024
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v11i01.17750

Abstract

Dewasa ini, siklus Rankine organik telah menjadi salah satu solusi alternatif pembangkit listrik ramah lingkungan karena dapat menggunakan sumber kalor bertemperatur rendah atau sumber kalor berdaya rendah. Namun, penggunaan fluida kerja organik yang lebih ramah lingkungan sebagai pengganti R245FA telah menjadi tuntutan pada masa yang akan datang. Oleh karena itu, penelitian ini bertujuan menganalisis pengaruh temperatur evaporasi terhadap kinerja energi siklus Rankine organik standar dengan fluida kerja R245FA, R515A, dan R1233ZD. Kinerja termodinamika didasarkan pada variasi temperatur evaporator menggunakan perangkat lunak Genetron Properties. Besaran-besaran penting yang dianalisis adalah laju aliran massa, daya pemompaan, penyerapan kalor, pelepasan kalor, rasio tekanan turbin, dan efisiensi termal. Hasil penelitian menunjukkan bahwa peningkatan temperatur evaporasi sangat berdampak pada peningkatan konsumsi daya pemompaan, rasio tekanan di turbin, dan efisiensi termal sistem. Namun, dibutuhkan daya pemompaan yang lebih besar untuk mensirkulasikan R515A dibandingkan dengan mensirkulasikan R245FA dan R1233ZD. Sistem ORC yang menggunakan R1233ZD memiliki efisiensi termal tertinggi dibandingkan R245FA dan R515A sehingga pada masa yang akan datang fluida kerja tersebut sangat cocok untuk menggantikan R245FA.
Pembuatan dan Pengujian Alat Penetas Telur Bertenaga Surya Tegangan 12V DC Nuban, Jondri K. A.; Koehuan, Verdy A.; Selan, Rima N.; Tobe, Adi Y.
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 11 No 01 (2024): April 2024
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v11i01.17756

Abstract

produce quality poultry chicks. However, the natural egg-hatching process is often less efficient and susceptible to fluctuations in environmental temperature. Therefore, to increase the efficiency and results of egg hatching, this research aims to design and test an automatic chicken egg incubator that uses solar energy. This tool is designed to consider factors such as temperature, humidity, and air circulation required for optimal egg hatching. Testing was carried out for 21 days, by monitoring environmental temperature, humidity, and temperature distribution in the egg hatching room. The test results showed that the tool was able to reach the desired temperature for hatching eggs and succeeded in hatching several eggs well, while some other eggs experienced defects or died during the hatching process. In addition, power and energy consumption analysis shows that the device has quite good efficiency in using energy, with low energy consumption to maintain the room temperature within the desired range. The solar-powered automatic egg incubator has the potential to increase the efficiency and yield of egg hatching in the livestock industry and can be an environmentally friendly alternative by utilizing solar energy which is available freely and sustainably
OPTIMASI MESIN PERAJANG SINGKONG DENGAN MEKANISME PENDORONG BAHAN BAKU OTOMATIS Runesi, Altruis Krisman; Mangesa, Daud P.; Selan, Rima Nindia
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 12 No 01 (2025): April 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v12i01.12022

Abstract

ABSTRACT Cassava is one of the agricultural commodities spread across most parts of Indonesia, especially in the province of NTT. The abundant potential makes cassava a staple food for the people of East Nusa Tenggara. UD. ML is a company that produces and markets cassava chips to meet the needs of the people of Kupang and its surroundings. During the cassava chips production process, the tools used are still using manual choppers with human power, so that it can cause defective products to be produced, such as errors in cutting that are not too thin or thick and the pieces are destroyed because they are too thin and worker fatigue when chopping cassava . The research method used in this study is the experimental method, observation and literature study. From the test results, it was found that the chopping capacity at blade setting A was 660 grams, knife B was 740 grams, and knife C was 800 grams, with a thickness of 1-3mm.
Pengujian Mekanik Serat Ijuk Pre Treatmeat NaOH Dengan Bahan Matriks Poliester Nana, Josef Etheldreda; Adoe, Dominggus G. H.; Selan, Rima Nindia
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 12 No 01 (2025): April 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v12i01.20145

Abstract

In this increasingly developing era, the manufacturing industry is experiencing very rapid development. The need for materials in this field is also increasing. Materials with certain characteristics such as strength, toughness, and other mechanical properties according to needs are highly sought after. Composite is a material formed from a combination of two or more constituent materials through a non-homogeneous mixture, where the mechanical properties of each constituent material are different, the use of composite materials properly and efficiently requires extensive knowledge of their mechanical properties. While the use of ijuk is still limited to household needs, even exported in raw material conditions, therefore the use of ijuk as a basic material for composites is a new hope for utilizing ijuk into a commodity that has higher added value. The results of the study on the Testing of Ijuk Fiber Mechanics Pre Treatmeat Naoh With Polyester Matrix Material concluded that concentration affects the bending strength of 9.44 N / mm2 and deflection of 37.94 mm of ijuk fiber with the best results at a concentration with a soaking time of 60 minutes.
Co-Authors Ada Kale, Ariency K. Ada Manu, Ariency Kale Adar, Damianus Adi Y. Adoe Adi Yermia Tobe Adoe, Dominggus. G.H. Antonius Fandie Tei Seran AOETPAH, YARDESH Ariency K. Ada Kale Ariency K. Ada Kale Ariency Kale Ada Manu Arienncy K. A. Manu Bale, Jefri Semuel Ben V. Tarigan Ben V. Tarigan Ben Vasco Tarigan Ben Vasco Tarigan Boy Bistolen Daud P. Mangesa Defmit B.N. Riwu Defmit B.N. Riwu Demas Abia Manimalay Demit B. N. Riwu Dominggus Godlief Heryson Adoe Erich Maliwemu, Erich Fa'ah , Yuri Sandra Farus, Febrianus Fathurrahmaniah, Fathurrahmaniah Gaspar P. M. Pinto Gusnawati Gusnawati Gusnawati Gusnawati Hari Rarindo Jack C. Pah Jack Pah Jahirwan Ut Jasron Jahirwan Ut Jasron Jefri S. Bale Jefri Semuel Bale Jefrianus Bere JonsJonson H. Laning Jusuf R. Manilapai Kristomus Boimau Kristomus Boimau Louis Ferdinand Boesday Mangesa, Daud P. Mangesa, Daud Pulo Manoh, Luter Imanuel Manu, Ariency Kale Ada Manu, Sarlince O. Maria Agustina Kleden Matheus M. Dwinanto Melkiades Tualasi Muhamad Jafri Nampa, I Wayan Nana, Josef Etheldreda Nuban, Jondri K. A. Nurhayati Nurhayati Nurhayati Nurhayati Pah, Jack C. A. Pah, Jack C.A. Pala, Elshaday Y. Pell, Yeremias M Philiphi de Rozari Renold H. Modok Rohi, Jemssy Ronald Runesi, Altruis Krisman Sanusi, Arifin Sarlince O. Manu Tarigan, Ben Tarigan, Ben V. Theodora M. Tualaka Theodora M. Tualaka Theodora Murni Tualaka Tobe, Adi Y Tobe, Adi Yermia Tualaka, Theodora M. C. Verdy A. Koehuan Verdy Koehuan Wenseslaus Bunganaen Weo, Napsiyana Asti Yeremias M. Pell Yosefina K.I.D.D Dhae