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All Journal Jurnal Teknik Mesin Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin R.E.M (Rekyasa Energi Manufaktur) Jurnal Turbo : Jurnal Program Studi Teknik Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering Justek : Jurnal Sains Dan Teknologi MITRA: Jurnal Pemberdayaan Masyarakat Community Development Journal Otopro Academia Open Indonesian Journal of Cultural and Community Development JTTM: Jurnal Terapan Teknik Mesin Jurnal Mesin Nusantara Jurnal Abdimas ADPI Sains dan Teknologi PELS (Procedia of Engineering and Life Science) Procedia of Social Sciences and Humanities Innovative Technologica: Methodical Research Journal JTTT Journal Of Engineering Sciences (Improsci) IJHCS
Prantasi Harmi Tjahjanti
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Design of Solar Collector Prototype with Working Fluid Temperature and Pressure Measurement for Energy Harvesting Fahruddin, A’rasy; Al Amien, Mochammad Sandi; Tjahjanti, Prantasi Harmi; Anshory, Izza
Academia Open Vol 8 No 2 (2023): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.8.2023.7276

Abstract

Indonesia is a tropical country, which gets a lot of sunshine every year. Harvesting energy from solar heat is an alternative solution to obtain renewable and environmentally friendly electrical energy. The purpose of this research is to design and test the temperature and flow of the working fluid of a solar collector for energy harvesting. The method used is true experiment research by making a solar collector prototype. Measurement of the temperature and pressure of the working fluid is carried out by varying the power of the heating lamp as a substitute for sunlight in the test. The experimental results show that the greater the heat energy received by the solar collector, the higher the temperature of the working fluid and the resulting pressure during the same test. The highest temperature recorded for the liquid coming out of the solar collector reaches 63.6 oC with a maximum pressure difference of 19.6 Pascals. The results of this test will be followed by testing the flow rate of the working fluid to determine the power potential of the working fluid for harvesting energy. Highlights: Efficiency Enhancement: Optimizing solar collector design for increased heat energy absorption and efficient energy conversion. Temperature-Pressure Correlation: Investigating the relationship between heat energy, working fluid temperature, and pressure for better energy yield. Flow Rate Analysis: Assessing working fluid flow to gauge energy potential and inform effective energy harvesting strategies. Keywords: solar collector, temperature, fluid pressure, energy harvesting
Effective and efficient design and manufacture of a plastic waste press machine Prantasi Harmi Tjahjanti; A'rasy Fahruddin; Agus Hermawanto; Septian Firmansyah
JTTM : Jurnal Terapan Teknik Mesin Vol 4 No 2 (2023): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v4i2.627

Abstract

In Madiredo Village, which is located in Pujon District, Malang Regency, there are many business programs. The problem is that these efforts result in a wide range of waste, including up to 5 tons per day of residential waste and other corporate waste. The debris was gathered from the Bengkaras Hamlet, Madirero Village Reduce, Reuse, Recycle (TPST 3R) Integrated debris Management Site. However, a lot of plastic garbage has still leaked out of the packing. The objective is to create a press machine (press) with an electric motor so that packed plastic trash and levers (used when the power goes out) no longer require manual work. The process involves designing and producing waste press machines, particularly for cardboard, plastic trash, and old bottles. Use of the 2016 version of Solidworks for the simulation design. The lowest stress, 2.038 x 104 N/m2, and the highest Von Misses stress, 2.825 x 108 N/m2, are determined by the modeling findings. The biggest displacement or deflection is 1.737 x 10 mm, while the smallest displacement is 0 mm. The values of the strain range from 1.880 x 10-7 to a minimum of 6.00 x 10-4. Safety factor has a value greater than 1 A 1 horsepower AC motor is used in the press machine's construction. Three different distance stopper pressing variables—33 cm, 35 cm, and 37 cm—as well as various types of waste plastic bags, plastic bottles, and cartons/cardboard are used to test the pressing performance. The results show that pressing plastic trash at a distance from the pressing stopper of 37 cm, a mass of 167 kg, a time of 2.2 minutes, and a compressive force of 6546.4 N/m2 may pack or package well for garbage in plastic bags
Pengaruh Aspek Ratio Luasan Sudden Contraction Terhadap Head Loss Aliran Laminar Waluyo, Satrio; Akbar, Ali; Tjahjanti, Prantasi Harmi; Firdaus, Rachmat
Jurnal Mesin Nusantara Vol 7 No 2 (2024): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v7i2.22530

Abstract

Penelitian ini dugunakan untuk mengetahui Head Loss aliran yang terjadi pada pipa Sudden Contraction dengan perbandingan spesimen 1, 2, dan 3 pada diameter tabung akrilik 0,2D, 0,4D, dan 0,6D. Dengan mengetahui Head Loss yang terdapat pada tiga pipa akrilik tersebut, maka akan diketahui nilai rugi tekanan yang terjadi. Dalam Penelitian ini digunakan debit 0,0005m3/s, yang mengalir pada saluran. Tekanan yang terjadi pada sisi masuk (D1) dan sisi keluar pipa (D2) Sudden Contraction akan diukur oleh manometer U. Head Loss dihitung dari perbedaan tekanan yang terjadi pada masing-masing aliran disetiap aspek rasio. Dari hasil penelitian ini didapatkan bahwa semakin besar aspek rasio , maka senakin kecil Head Loss yang terjadi, yaitu pada aspek rasio 0,2D sebesar 0,0043 meter, aspek rasio 0,4D sebesar 0,0014 meter, aspek rasio 0,6D sebesar 0,0003 meter .
Core Material Manufacturing Study On Aluminum Composite Panel (ACP) Harmi Tjahjanti, Prantasi; Fahruddin, A'rasy; Mulyadi, Mulyadi; Hardy Sujiatanti, Septia; Eryandrie Wicaksono, Majdi; Bamban Jakaria, Ribangun
Journal of Engineering Sciences Vol 2 No 3 (2024): Vol 2 No 3 December 2024
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i3.579

Abstract

An aluminum composite panel (ACP) is a flat panel with aluminum plates/sheets that are rigid and strong but relatively lightweight. Between the two plates, the core material content is generally made of polyethylene and polyurethane. However, the two core materials are not resistant to high temperatures/heat. They are flammable, so it is urgent to make variations of other core materials resistant to high temperatures. This study aims to provide variations for ACP core materials using polymer materials resistant to high temperatures, namely Low-Density polyethylene (LDPE) and Polyoxymethylene (POM). The method used is experimental/fabrication of ACP making. The high-temperature test was carried out in a furnace with a temperature of 3000C, 3500C, and 4000C, each with a holding time of 1 hour. The results obtained from observing the microstructure using an Optical Microscope before and after the test damaged the core material while the Aluminum metal was still intact. The mass of ACP before and after testing also changed. Overall, at the three temperatures above, the LDPE core material does not withstand this temperature because the temperature is above the melting point of the LDPE material.
Furnace Engine Modification to Lower Power Catur Ahadi, Yeyen; Harmi Tjahjanti, Prantasi
Journal of Engineering Sciences Vol 1 No 2 (2023): Vol 1 No 2 October 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i2.69

Abstract

Furnace machine or heating furnace is a tool used for heat treatment processes or usually called heat treatment, furnace machines have several types from the beginning found furnace machines, namely induction furnaces/conventional furnaces and then transformed into electric furnaces, electric furnaces are more often used for processes heat treatment because it is cleaner compared to the convection furnace.The furnace machine requires 5000 watts of power, 13.1A. to reach the temperature of 8000 takes 7296 seconds. Furnace machine testing is by quenching using ST-42 steel which is held at 6000 and varying time, the first test material is not treated with heat traetment, for the second test material with a variation of 15 minutes, third 30, fourth 60, fifth 90, sixth 120 minute. the results of the quenching process were tested using the Brinell and Vickers hardness test methods.
Making Composite Materials from Unsaturated Polyester and Coconut Fiber Judging from Mechanical Properties Nurudin, Arif; Harmi Tjahjanti, Prantasi; Setyawan, Anton
Journal of Engineering Sciences Vol 1 No 4 (2024): Vol 1 No 4 February 2024
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i4.185

Abstract

Making combined materials that consist of unsaturated polyester and coconut fiber is the target of this research. The samples were tested by tensile and hardness tests before and after warm-up, and obtained by the result was that the trend value of hardness of unsaturated polyester+coconut fiber experienced proportional degradation with the addition of the composition of coconut fiber. The composition of 3% coconut fiber+97% unsaturated polyester has the highest hardness value, reaching 46,7 kg/mm2, and downhill becomes 43,1 kgf/mm2 moment heated at a temperature of 500C for 1 hour. Analog to the tensile test, 3% coconut fiber + 97% unsaturated polyester composition has the highest ultimate tensile strength and yield point. Adding fiber can boost the elasticity modulus, but the warm-up treatment causes the expansion of coconut fiber. The result is that the value of the tensile and hardness of the polyblend will go downhill.
Investigation Study of Semi-Bio Briquettes and Synthesis Briquettes From Used Polymer Waste Plastic Bottles Harmi Tjahjanti, Prantasi; Bamban Jakaria, Ribangun; Febriyan Ikhsanudin, Achmad; Fernanda, Rexy Eca; Akbar, Ali; Fahruddin, A'rasy
Jurnal Improsci Vol 2 No 5 (2025): Vol 2 No 5 April 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i5.668

Abstract

Up to 2022, Indonesians will produce 69 million tons of waste, of which 12.5 million tons, or 18.2%, will be plastic waste. Since 1995, the number has been growing dramatically. Recycling shredded waste to reduce its volume and enable processing into other materials is one way to manage plastic waste appropriately. This study specifically converted plastic bottle waste into briquettes for used polymer waste. Briquettes are made from recycled plastic bottles used to make polymer waste. There are two types of briquettes made from this waste: Semi-Bio Briquettes, which are made from recycled plastic bottles that have been used to make polymer waste mixed with natural materials like wood sawdust and coconut fiber and adhered with starch, and Synthesis Briquettes, which are made from recycled plastic bottles that have been used to make patchwork or fabric waste and paper waste. The next tests include (1) the Calorific Value Test (Bomb Calorimeter Method), (2) the Proximate Test following SNI 01-6235-2000, which assesses bound carbon, moisture content, ash content, volatile matter content, and other factors, and (3) the Gas/Smoke Emission Test following 2017 RI Minister of Environment and Forestry Regulation Standards. SEM was used to examine the microstructure of synthetic and semi-bio briquettes. While the calorific values for synthetic briquettes did not satisfy the specifications, the results for semi-bio briquettes met the standards. The proximate test results, however, revealed that the two briquettes did not meet the specifications for bound carbon content while meeting the standards for volatile matter content and moisture level. However, only semi-bio briquettes meet the requirements for ash content. The CO, CO2, and HC gas/smoke emission tests all yielded data that complied with the 2017 RI Minister of Environment and Forestry Regulation requirements. Semi-bio briquettes' microstructure observations were less hollow and denser than those of synthetic briquettes.
Development and Analysis of Automatic Controls of Washer and Hand Dryer Equipment Satrio Wicaksono, Alfiansyah; Tjahjanti, Prantasi Harmi
International Journal of Human Computing Studies Vol. 7 No. 3 (2025): International Journal of Human Computing Studies (IJHCS)
Publisher : Research Parks Publishing LLC

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31149/ijhcs.v7i3.5458

Abstract

The results of making and testing hand washing and drying equipment are technological changes and improvements that are useful in everyday life and can even reduce the spread or transmission of viruses. When using hand washing and hand drying equipment, you no longer need to hold/press/squeeze the equipment, you only need to bring your hand closer to the equipment, you can clean your hands in a short time and it is also more practical.
Analisa Manufaktur Kursi Roda Elektrik Untuk Disabilitas Fisik Ditinjau dari Aspek Ergonomi Harmi Tjahjanti, Prantasi; ., Mulyadi; ., Iswanto; Artha Gumelar, Buyung; Rudyansyah Kristiadi, Rakhmad; Prastio, Anggit; Mustakim, Annas
English Vol 3 No 1 (2025): Volume 3 - Nomor 1 - Mei 2025
Publisher : Fakultas Teknik dan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47970/jttt.v3i1.864

Abstract

Angka disabilitas fisik yang tinggi sebagai pemicu dan pemacu dalam pengembangan riset/penelitian bagi penyandang disabilitas untuk membantu aktivitas sehari-hari mereka, salah satunya adalah dengan kursi roda. Ada rasa keprihatinan melihat kursi roda manual yang dipakai sehari-hari para disabilitas fisik, khususnya dengan tangan dan kakinya yang tidak normal, sehingga menjadi masalah sendiri karena mereka cukup kesulitan dan melelahkan dalam mengayuh kursi roda manual. Kondisi tersebut jelas berdampak pada produktivitas kerjanya, sehingga mengurangi pendapatan/perekonomian mereka. Karena itu tujuan penelitian ini adalah manufaktur pembuatan kursi roda elektrik milik dua orang disabilitas fisik (yaitu peserta pertama dan peserta kedua) dan dilakukan uji ergonominya meliputi Kesesuaian anthropometri tubuh pengguna dan dimensi kursi roda, Hasil analisa  postural pengguna dengan RULA (Rapid Upper Limb Assesment), Kesesuaian dimensi kursi roda dengan standar, dan Evaluasi usabilitas kursi roda berdasarkan observasi. Hasil yang diperoleh untuk kursi roda elektrik Peserta pertama adalah dari sisi antropometri, tinggi popliteal lebih panjang dari pada jarak antara dudukan dan pijakan kaki di kursi roda. Agar Peserta pertama lebih nyaman dalam menggunakan kursi rodanya dan kaki tidak menyerong (yang akan berpotensi menyebabkan gangguan musculoskeletal lebih besar), direkomendasikan jarak antara dudukan dan pijakan kaki perlu diperpanjang. Sementara untuk kursi roda elektrik Peserta kedua, secara umum kursi roda Peserta kedua sudah diberikan modifikasi untuk menyesuaikan dengan kebutuhan dan kondisi tubuh Peserta kedua sekaligus membuat desain kursi roda Peserta kedua lebih ergonomis. Namun demikian analisis postural menunjukkan posisi lengan bawah terangkat dan tangan mengalami twisting (menekuk) saat Peserta kedua mengoperasikan kontroler kursi roda elektrik.  Sehingga disarankan untuk menurunkan posisi kontroler sejajar dengan dudukan kursi roda
Pengaruh Aspek Ratio Luasan Sudden enlargement Terhadap Head Losses Aliran Laminar Rachmadani, Dhaniar Gumelang; Akbar, Ali; Tjahjanti, Prantasi Harmi; Firdaus, Rachmat
Jurnal Mesin Nusantara Vol 8 No 1 (2025): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v8i1.22529

Abstract

Penelitian ini dugunakan untuk mengetahui Head Loss aliran yang terjadi pada pipa Sudden enlargement/Expansion dengan perbandingan spesimen 1, 2, dan 3 pada diameter tabung akrilik 0,2D, 0,4D, dan 0,6D. Dengan mengetahui Head Loss yang terdapat pada tiga pipa akrilik tersebut, maka akan diketahui nilai rugi tekanan yang terjadi. Dalam Penelitian ini digunakan debit 0,0005m3/s, yang mengalir pada saluran. Tekanan yang terjadi pada sisi masuk (D1) dan sisi keluar pipa (D2) Sudden Expansion akan diukur oleh manometer U. Head Loss dihitung dari perbedaan tekanan yang terjadi pada masing-masing aliran disetiap aspek rasio. Dari hasil penelitian ini didapatkan bahwa semakin besar aspek rasio , maka senakin kecil Head Loss yang terjadi, yaitu pada aspek rasio 0,2D sebesar 0,0043 meter, aspek rasio 0,4D sebesar 0,00097 meter, aspek rasio 0,6D sebesar 0,00067 meter.
Co-Authors A'rasy Fahruddin Abdi Chandra Putra Achmad Febriyan Ikhsanudin Adi Prastyo Utomo Agus Hermawanto Ajitiyo Dananjoyo Al Amien, Mochammad Sandi Alfiansyah Satrio Wicaksono Ali Akbar Ali Akbar Anom Isti , As’ad Arasy Fahruddin Arif Nurudin Artha Gumelar, Buyung Arwiyono, Wiky Anjaya Ayeik Abimanyu A’rasy Fahruddin Bachtiar, Rifky Umar Bagas Ariya Dipangga Bahri, Saiful Catur Ahadi, Yeyen Chilmi, Muchammad Darminto Darminto Edi Widodo Edi Widodo, Edi Efendi, Moch Miqdar Eko Panunggal Eko Wahyono Setyawan Ernanda, Rico Ryan Eryandrie Wicaksono, Majdi Fahruddin, A'rasy Fahruddin, A’rasy Fajar Syahril Kirom Faris Abdullah Febriyan Ikhsanudin, Achmad Fernanda, Rexy Eca Fuad Hamzah Hamzah, Fuad Hardy Sujiatanti, Septia Haris Suprastiyo Henry Vian Ivanda Ikhsanudin, Achmad Febriyan Iqbal Hadliri iswanto Iswanto -, Iswanto Iswanto . Iswanto Iswanto Iswanto Iswanto Ivanda, Henry Vian Izza Anshory M. Ganu Hersandi Moch Arif Hidayatulloh Mohammad Afif Fajar Mohammad Dani Iswanto Muhammad Amin Putro MULYADI Mulyadi . Mulyadi Mulyadi Mulyadi Mulyadi Mustakim, Annas Mustofa, Wahyu Ali Nurmughni Zulham Amri Prasetiyo, Abdul Aziz Prastio, Anggit Rachmadani, Dhaniar Gumelang Rachmat Firdaus Rahmananto, Satrio Fajar Rexy Eca Fernanda Ribangun Bamban Jakaria Rico Ryan Ernanda Rizki Ardi Arrahman Rudyansyah Christie, Rakhmad Rudyansyah Kristiadi, Rakhmad Ryan Ernanda, Rico Sarifudin, Mohamad Satrio Wicaksono, Alfiansyah Septian Firmansyah Setyawan, Anton Taufik Afandi Tri Cahyono Waluyo, Satrio Wibowo Harso Nugroho Wijaya Kelana Nur Soleh Wijaya Kelana Nur Soleh Wiwik Sumarmi Zyahdo Nikri Jofalo