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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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Maintaining Printing Machines at a Textile Company Rahmananto, Satrio Fajar; Tjahjanti, Prantasi Harmi
Procedia of Engineering and Life Science Vol 7 (2024): Proceedings of the 7th Seminar Nasional Sains 2024
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v7i0.1568

Abstract

This qualitative research explores the multifaceted applications of Polyvinyl Chloride (PVC) in East Java, Indonesia. Utilizing interviews, observations, and literature review, the study aims to analyze PVC's utilization across diverse sectors. Results highlight its extensive use in synthetic leather, flooring, and color manufacturing, emphasizing its versatility, chemical resistance, lightweight, and water-resistant properties. Implications underscore the importance of comprehending PVC's role for sustainable development and innovation. Highlight : PVC's Versatility: The study showcases PVC's adaptability across various industries, from synthetic leather to flooring, emphasizing its diverse applications. Sustainable Development: Understanding PVC's role in industrial contexts highlights opportunities for sustainable development and innovation, contributing to environmental conservation efforts. Qualitative Approach: Utilizing interviews, observations, and literature review, the research offers in-depth insights into the utilization of PVC in East Java, Indonesia. Keywords: PVC, applications, East Java, Indonesia, qualitative research
Karakteristik Pengelasan Shield Metal Arc Welding (SMAW) dan Gas Tungsten Arc Welding (GTAW) pada Plat Stainless Steel 201 di Tabung Air Minum Sarifudin, Mohamad; Tjahjanti, Prantasi Harmi
Innovative Technologica: Methodical Research Journal Vol. 3 No. 1 (2024): March
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/innovative.v3i1.98

Abstract

Pengelasan adalah suatu proses penyambungan logam sejenis maupun berbeda dengan menggunakan energi panas. Pengelasan yang paling populer di Indonesia saat ini yaitu pengelasan dengan menggunakan busur nyala listrik (Shielded Metal Arc Welding/ SMAW) dana pengelasan menggunakan gas nyala yang dihasilkan dari busur nyala listrik (Gas Tungsten Arc Welding/ GTAW). Baja tahan karat sangat dibutuhkan dilingkungan masyarakat maupun industri, yang paling umum digunakan yaitu baja tahan karat jenis austenitik. Pada umumnya baja tahan karat jenis austenitik memiliki komposisi kimia sangat sedikit yaitu 16% Chromium dan 6% Nikel. Baja tahan karat memiliki beberapa seri, salah satunya adalah seri SS 201. Pada saat proses pengelasan, ketebalan dan jenis bahan juga sangat berpengaruh agar mendapat hasil yang baik, hal ini disebabkan karena masukan panas yang diterima berbeda-beda tergantung luas penampang, Oleh karena itu diperlukan penelitian lebih lanjut mengenai karakteristik pengelasan SMAW dan pengelasan GTAW pada plat Stainless 201 pada pembuatan tabung air minum. Dari hasil penelitian menggunakan dye penetrant dapat disimpulkan bahwa secara visual pengelasan GTAW lebih baik daripada pengelasan SMAW karena porositas dan keretakan hasil pengelasan sangat minim terjadi. Sedangkan secara pengujian tekan yang dilaksanakan di UPT BLK Surabaya, spesimen pengelasan GTAW lebih kuat dengan hasil tekanan rata-rata 2.216,92 mpa, sedangkan dibandingkan spesimen pengelasan SMAW dengan hasil tekanan rata-rata 2.155,79 mpa.
Analisa Pengelasan Tungsten Inert Gas (TIG) pada Material Titanium (Ti-6Al-4V) Cahyono, Tri; Tjahjanti, Prantasi Harmi
Innovative Technologica: Methodical Research Journal Vol. 3 No. 2 (2024): June
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/innovative.v3i2.104

Abstract

Material paduan titanium merupakan material alternatif yang bisa digunakan untuk material implant karena memiliki banyak kelebihan jika dibandingkan dengan SS 316 L antara lain memiliki bobot yang relatif lebih ringan dengan (mechanical properties) yang mumpuni. Pada industri manufaktur alat implant yang ada di Indonesia sebagian besar masih menggunakan metode manufaktur yang sederhana yaitu menggunakan alat forging dan penyambungan manual (welding). Material Ti-6Al-4V walaupun memiliki banyak kelebihan namun material ini memiliki kelemahan yaitu sulit untuk dilakukan proses manufaktur seperti penyambungan dengan metode pengelasan (welding). Paduan titanium memiliki kemampuan ketahanan korosi (heat resistance) yang baik dikarenakan paduan titanium ini memiliki lapisan oksida. Serta memiliki kekuatan mekanis yang tinggi sehingga lebih kuat. Dari pengujian yang dilakukan tentang pengaruh variasi arus las dan gas argon terhadap kekerasan, dan struktur mikro pada material titanium (Ti-6Al-4V) dengan proses TIG (Tungsten Inert Gas), kegunaannya untuk mendapatkan metode pengelasan yang baik pada logam Ti-6Al-4V dari aspek kekerasan, dan struktur mikro. Dari hasil pengujian kekerasan Rockwell (HRC) terhadap variasi arus las, kekerasan yang paling mendekati struktur (Base Metal) BM menggunakan volume argon 5 lt/m dan arus sebesar 30 Ampere, dan hasil pengujian kekerasan Rockwell (HRC) yang memiliki perbedaan kekerasan paling besar terhadap struktur (Base Metal) BM yaitu pada Ampere 35, dan Volume gas argon 15 lt/menit.
Instalasi Pemasangan Pipa untuk Air Bersih ke Rumah Tangga di Dusun Klampok Desa Sumbergedang Pandaan Mustofa, Wahyu Ali; Tjahjanti, Prantasi Harmi
Innovative Technologica: Methodical Research Journal Vol. 3 No. 3 (2024): September
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/innovative.v3i3.109

Abstract

Instalasi pemasangan pipa air bersih di dusun Klampok bertujuan untuk mengalirkan air bersih dari sumber air hingga ke rumah warga. Air bersih dialirkan dari sumber air menggunakan pipa jenis PVC dengan diameter 2 inch pada kedalaman 63 meter. Penelitian ini dilakukan untuk menguji instalasi pipa yang telah dipasang apakah terdapat kebocoran atau tidak. Uji ini dilakukan dengan melakukan pengamatan pada sepanjang pipa yang terpasang selama dua jam, apabila selama dua jam tidak terdapat pipa yang bocor pada sambungan nya, maka dinyatakan lolos uji sambungan pipa. Pengujian selanjutnya yaitu Uji ekspansi linier yang bertujuan untuk menguji kehilangan tekanan (mayor headloss) akibat gesekan atau friksi pada aliran fluida di instalasi pipa. Uji ekspansi linier menggunakan persamaan Darcy-Weisbarch kemudian dihubungkan antara bilangan Reynolds yang sudah dihitung dengan nilai kekasaran pipa pada diagram Moody. Pengujian yang kedua yaitu Uji aliran air dalam pipa untuk menguji kehilangan tekanan akibat fitting (minor headloss) pada instalasi pipa. Uji ini menggunakan nilai k pada tiap-tiap fitting yang dapat dilihat pada Tabel Koefisien Kerugian Untuk Komponen Pipa. Berdasarkan hasil pengujian dan pengamatan yang dilakukan selama 2 jam, sepanjang pipa yang terpasang dari sumber air ke tandon hingga ke rumah warga menunjukkan bahwa tidak terdapat kebocoran (lolos uji sambungan pipa). Hasil pengujian ekspansi linier adalah kehilangan tekanan (headloss) akibat gesekan atau friksi pada aliran fluida di instalasi pipa adalah sebesar 83,0551917 m. Hasil pengujian aliran air dalam pipa adalah bahwa kehilangan tekanan akibat fitting (minor headloss) pada instalasi pipa air bersih dari sumber air hingga ke rumah warga adalah sebesar 9,43115 m.
The Effect of Temperature and Air Velocity on Drying Rate of Cracker Dough Using Cabinet Dryer: Pengaruh Variasi Temperatur dan Kecepatan Udara Terhadap Laju Pengeringan Adonan Kerupuk Menggunakan Cabinet Dryer Fahruddin, A’rasy; Anom Isti , As’ad; Mulyadi; Tjahjanti, Prantasi Harmi
Procedia of Social Sciences and Humanities Vol. 3 (2022): Proceedings of the 1st SENARA 2022
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pssh.v3i.250

Abstract

Drying is the heating process of food so that it reaches the water content of a certain material. This study aims to determine the drying rate and drying efficiency of wet crackers by using a dryer that is varied with variations in temperature and air velocity. The drying rate is the rate at which the water content of the specimen is reduced. In the drying rate test, it is obtained from the rate of reduction of the mass of the specimen due to evaporation of the water content in the specimen. The test was carried out in stages by adjusting the temperature to 60oC, 70oC, and 80oC with the air speed of the blower at 700 rpm, 1150 rpm, and 1600 rpm continuously. The test results show that the drying rate and drying efficiency are the most optimal as follows: a temperature of 80oC at a blower speed of 700 rpm produces a drying rate of 11.67 mg/min.
Plastic Cup Lid Molding Machine Design For Clean Water Ready to Drink in Sumbergedang Village, Pasuruan: Desain Mesin Cetak Tutup Gelas Plastik Untuk Air Bersih Siap Minum di Desa Sumbergedang Pasuruan Tjahjanti, Prantasi Harmi; Ivanda, Henry Vian; Hamzah, Fuad
Procedia of Social Sciences and Humanities Vol. 3 (2022): Proceedings of the 1st SENARA 2022
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pssh.v3i.294

Abstract

Plastic cup lid printing machine design for clean ready-to- drink water in Sumbergedang Village, Pasuruan is the result of research and dedication to the Community that has been done before. Design it later then it will be made / realized with the main objectives are as follows:additional income for the village community of Sumbergedang Pasuruan. MachineThis plastic cup lid print is designed to use a driving motor, so it's not manual power. The design uses SolidWork software with the input data being the cup sealer machine body component, the motor component for the sealing process, the cutter press component (plastic cutter when sealed), the ring component for the glass cup, and other additional components. The final result of the design made meets the requirements to be made (manufacturing)
Briquette Making Natural and Synthetic Materials: Pembuatan Briket Bahan Alami dan Bahan Sintesis Tjahjanti, Prantasi Harmi; Fernanda, Rexy Eca; Ikhsanudin, Achmad Febriyan
Procedia of Social Sciences and Humanities Vol. 3 (2022): Proceedings of the 1st SENARA 2022
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pssh.v3i.295

Abstract

A briquette is a block of combustible material that is used as a fuel to start and maintain a flame. This research makes briquettes made from thermoplastic type plastic bottle waste mixed with natural and synthetic materials. Natural materials using a mixture of coconut fiber, sawdust/wood sawdust with starch adhesive, while the synthetic ones use used cloth or cloth waste, paper waste and Lapindo mud adhesive. The briquette test was carried out, namely the heat test, combustion test, and proximate test. The results obtained that briquettes made from waste/garbage of plastic bottles mixed with natural and synthetic materials can increase the calorific value and combustion value of the briquettes.
Study of Prototype Making of Liquid Smoke Production Equipment From Tree Trunk Waste and Used Wood Tjahjanti, Prantasi Harmi; Bachtiar, Rifky Umar
Community Development Journal Vol 8 No 2 (2024): Community Development Journal
Publisher : Universitas Nahdlatul Ulama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33086/cdj.v8i2.6149

Abstract

Making use of natural trash is crucial. Examples of such garbage include maize cobs, worn wood, and tree trunks. As part of this community service project, used wood and tree trunk waste will be used as raw materials to create prototype tools for producing liquid smoke. The process starts with tool design and ends with tool construction. A conical tube-shaped pyriolysis device is part of the liquid smoke production apparatus, and it is linked to a connecting pipe through which it is connected. The installation of an ionometer, storage container, gas exhaust hose, and bierate fraction sedimentation tube follows. The effective capacity of the apparatus, the temperature increase rate test during the pyrolysis process, the yield test, the charcoal weight test from the combustion residue, and the temperature increase rate test during the distillation process were among the equipment performance tests that were conducted. The findings showed that: (1) this pyrolysis device's average effective capacity was 0.5 L/hour; (2) the yield was 35.34%; and (3) experiment 3 produced the maximum output of liquid smoke, at 1.9 L, while experiment 2 produced the lowest yield, at 1.65 L. (5) The computation yielded a density value of 1.01 kg/L for liquid smoke; (6) Three attempts of pyrolysis combustion with a pyrolysis tool produced 4.3 kg of residue (carbon) or charcoal. (7) From 1000 mL of liquid smoke to be distilled, 400 mL of liquid smoke was obtained after 80 minutes of distillation.
Electric Wheelchair Manufacturing Analysis For Physical Disabilities Reviewed from the Aspect of Ergonomics Harmi Tjahjanti, Prantasi; Mulyadi; Iswanto; Artha Gumelar, Buyung; Rudyansyah Christie, Rakhmad; Prastio, Anggit; Mustakim, Annas
Journal of Engineering Sciences Vol 2 No 1 (2024): Vol 2 No 1 August 2024
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i1.429

Abstract

The high rate of physical disability is a trigger and spur in the development of research/research for people with disabilities to help with their daily activities, one of which is with a wheelchair. There is a sense of concern to see manual wheelchairs used daily by people with physical disabilities, especially with their abnormal hands and feet, so it becomes a problem in itself because they are quite tricky and tired of pedaling a manual wheelchair. This condition impacts their work productivity, thereby reducing their income/economy. Therefore, the purpose of this research is to manufacture electric wheelchairs belonging to two people with physical disabilities (i.e., belonging to Bagus and Huda). The ergonomics tests are carried out, including (a) Compatibility of the anthropometry of the user's body and the dimensions of the wheelchair, (b) Results of the user's postural analysis with RULA (Rapid Upper Limb Assessment) (c) Conformity of the dimensions of the wheelchair with the standard, and (d) Evaluation of the usability of the wheelchair based on observation. The results obtained for the Bagus electric wheelchair are from the anthropometric side. The popliteal height is longer than the distance between the seat and the footrest in the wheelchair. For Bagus to be more comfortable in using his wheelchair and for his legs not to be crooked (which will potentially cause more excellent musculoskeletal disorders), it is recommended that the distance between the seat and the footrest be extended. As for Huda electric wheelchairs, in general, they have been modified to adjust to the needs and conditions of Huda's body and make the design of Huda wheelchairs more ergonomic. However, the postural analysis showed that the forearm position was raised, and the hand was twisted when Huda operated the electric wheelchair controller. It is, therefore, recommended to lower the position of the controller in line with the wheelchair mount.
Silica Sand, Activated Carbon, and Manganese Zeolite for Clean Water Filtration HARMI TJAHJANTI, PRANTASI; Ernanda, Rico Ryan
Indonesian Journal of Cultural and Community Development Vol 15 No 3 (2024): September
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijccd.v15i3.1064

Abstract

The General Background Water is essential for human life, but many rural areas still lack access to clean drinking water that meets health standards. In Sumbergedang Village, Pandaan, local water sources are often contaminated by dissolved metals and bacteria, posing risks to community health. Current filtration methods in the area are insufficient, and limited studies explore the combined use of silica sand, activated carbon, manganese zeolite, and UV sterilization for improving rural water quality. This study aims to evaluate the performance of these filtration materials and UV sterilization in producing safe drinking water for the village. The results show that the filtration system increased the pH of the water from 7.94 to 7.98, within acceptable drinking water standards. The novelty of this research lies in the integration of filtration materials with UV sterilization to address both chemical and microbial contaminants, offering a comprehensive solution for water purification. The findings suggest that, while the system effectively improves most water quality parameters, additional treatments may be required to reduce aluminum levels to meet national drinking water standards. These results have important implications for water management in rural areas facing similar challenges. Highlihts: The study combines mangan zeolite, silica sand, and activated carbon with UV sterilization for effective water purification. Filtration and UV treatment significantly reduced turbidity, odors, and bacterial contamination in spring water. Aluminum levels exceeded permissible limits, indicating the need for further modifications to the filtration system. Keywords: Water quality, filtration, UV sterilization, rural communities, aluminum levels
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