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All Journal SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Jurnal Bakti Nusa Jurnal Karya Pengabdian Teknik Mesin Energy, Materials and Product design
Pandri Pandiatmi
Jurusan Teknik Mesin, Fakultas Teknik Universitas Mataram
Humanities Automotive Engineering Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mechanical Engineering

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Evaluasi Sifat Bending, Tarik dan Morpologi dari Komposit Polyester/Serbuk Serat Hibiscus Tiliaceus setelah diperlakukan dengan NaOH Nasmi Herlina Sari; Emmy Dyah Sulistyowati; Sinarep Sinarep; Pandri Pandiatmi; I Made Wirawan; Suteja Suteja; Yusuf Akhyar Sutaryono; Sujita Sujita; Rozan Hermansyah; Muhammad Rama Setiyadi
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 7 No 2 (2021)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2021.v07.i02.p04

Abstract

Telah diinvestigasi komposit poliester yang dimodifikasi dengan serbuk dari serat hibiscus tiliceus (HT) sebagai inovasi dari material komposit yang baru. Penelitian ini bertujuan untuk menyelidiki sifat mekanik dari komposit dari serbuk hibiscus tiliaceus (HT) setelah direndam dalam larutan alkali dalam periode berbeda. Sebelum dibuat komposit, serbuk HT direndam dalam alkali NaOH 5% selama waktu berbeda yaitu 2, 4 jam, 6 jam, dan 8 jam. Teknik pembuatan komposit dilakukan dengan teknik hand lay-up; resin poliester sebagai matrik dengan hardener dari metil etil keton peroksida 1% dicampur, kemudian dituang ke dalam cetakan dan diberi tekanan 5 MPa selama 12 jam. Sifat kekuatan tarik, modulus elastisitas dan kekuatan bending telah dievaluasi. Hasil studi menunjukkan bahwa lama perendaman serbuk HT dalam NaOH memberikan efek pada sifat mekanik dari komposit serbuk HT/polyester. Setelah serbuk direndam dalam NaOH selama 2 jam, 4 jam dan 6 jam, kekuatan tarik dan bending dari komposit meningkat yang dikaitkan dengan ikatan interface antara serbuk HT-poliester bertambah kuat, tetapi kekuatannya menurun setelah serbuk direndam selama 8 jam karena serbuk HT rusak dan pullout. Analisa SEM menunjukkan morpologi patahan yang rapat dan padat antara serbuk dan poliester serta adanya serbuk HT pullout. Ditinjau dari kekuatan tariknya, komposit yang dihasilkan ini dapat menjadi alternatif pengganti komposit serat gelas. A polyester composite modified with powder from Hibiscus Tiliceus fiber as a new composite material. This study aims to evaluate the mechanical properties of the composite of Hibiscus tiliaceus (HT) powder after being immersed in an alkali solution for different periods. Before making the composite, the HT powder was immersed in 5% NaOH for times; 2, 4, 6, and 8 (hours). The composite manufacturing technique has been carried out using the hand lay-up technique; polyester resin as a matrix with a hardener of 1% methyl ethyl ketone peroxide mixed, then poured into molds and under the pressure of 5 MPa for 12 h. The properties of tensile strength, modulus of elasticity, and bending strength have been evaluated through tensile and bending tests. The results showed that the tensile and bending strengths of the composite increased after the HT powder was soaked from 2 h to 6 h; it is due to an increase in the interfacial bond between the HT powder-polyester, but the composite strength decreased after the powder was soaked for 8 h because the HT powder was damaged and powder pullout occurs. SEM analysis shows a tight and dense interface between the powder and polyester and the presence of HT powder pullout. In terms of tensile strength, the resulting composite can be an alternative to glass fiber composites.
Karakterisasi Unjuk Kerja Mesin 100 CC dengan Bahan Bakar Syngas Rudy Sutanto; Pandri Pandiatmi
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 13, No 2 (2019): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.13.2.97-102

Abstract

Gasification is a process of converting carbon-containing compounds to convert both liquid and solid materials into fuel-capable gas (CO, H2, CO2, CH4, and H2O) through the combustion process with limited air supply. Gasification that we have known so far is gasification with coal feed and agricultural waste, but gasification with livestock waste feed has never been done. In this study the gasification feed material used horse dung biomass with a gas agent in the form of oxygen. The purpose of this study was to determine the effect of oxygen flow rate (4 variations namely 10, 15, 20 and 30 lt / min) in the process of gasification of horse dung (produced 4 fuels namely syngas A, syngas B, syngas C and syngas D) on the performance capabilities of a 100 cc engine. The stages of the research carried out were drying feed material, gasification process, syngas storage and testing on a 100 cc engine with various variations of rotation (4 variations namely 1500, 2500, 3500 and 4500 rpm). The results obtained from this study are the highest torque and effective power obtained in syngas A fuel for various engine speeds. At 4500 rpm, a torque of 6.7 Nm is obtained, while an effective power of 3156 Watts is used to test engine results using Syngas A fuel.
MODIFIKASI INSTALASI PENYEDOT DEBU DENGAN PENERAPAN SUDU TIPE AKSIAL UNTUK KERAJINAN KULIT KERANG MUTIARA “YANTO” HANDYCRAFT I Wayan Joniarta; I Kade Wiratama; I Made Adi Sayoga; Nur Kaliwantoro; Pandri Pandiatmi
Jurnal Bakti Nusa Vol. 3 No. 2 (2022): JURNAL BAKTI NUSA
Publisher : Jurusan Teknik Elektro Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/baktinusa.v3i2.65

Abstract

Mitra kegiatan pengabdian adalah “YANTO“ Handycraft. Permasalahan mitra yaitu penyedot debu kurang maksimal, ketrampilan dalam modifikasi serta perawatan penyedot debu, manfaat dan bahaya debu kulit kerang. Kegiatan ini bertujuan merancang bagian pengisap debu sudu tipe aksial, modifikasi saluran debu dan perawatan. Metodelogi kegiatan dimulai dengan mendesain, pembuatan di bengkel kemudian aplikasi di mitra. Penyuluhan mengenai bahaya dan manfaat debu kulit kerang. Evaluasi kegiatan dengan Skala Lickert. Hasil kegiatan yaitu tim pelaksana telah berhasil memodifikasi saluran penyedot debu dengan aplikasi sudu tipe aksial. Terjadi perubahan tingkat pemahaman dan ketrampilan dalam memodifikasi dan merawat instalasi penyedot debu. Peningkatan terbesar yaitu pemahaman dan ketrampilan dalam modifikasi mesin penyedot debu dari 20% menjadi 64%. Perubahan yang paling kecil adalah pengetahuan dan ketrampilan cara bongkar pasang saluran debu dari 14% menjadi 48%. Berdasarkan personal yang melakukan bahwa Pak Sudiyanto memiliki pengetahuan dan ketrampilan yang lebih baik dibanding dengan karyawan yang lain dari sebelumnya 28% menjadi 68%.
Penyuluhan Penghancur sampah Daun di Lingkungan Gomong Kota Mataram Propinsi Nusa Tenggara Barat Arif Mulyanto; Pandri Pandiatmi; Paryanto Dwi Setyawan; Agus Dwi Catur; IMade Adi Sayoga; Khairil Anwar Fajrie; Dimi Frasepta Ilhami
JURNAL KARYA PENGABDIAN Vol. 5 No. 1 (2023): April, Jurnal Karya Pengabdian
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v5i1.147

Abstract

Gomong sebagai desa di perkotaan mempunyai permasalahan sampah. Salah satu pengelolaan sampah yang bisa dilakukan oleh pedesaan di perkotaan adalah dengan mendaur ulang sampah. Sampah yang berasal dari tumbuhan sering kali dibuang ke tempat pembuangan akhir atau dibakar. Sampah tumbuhan dapat dibedakan antara sampah daun dan batang. Sampah yang berupa batang dapat diolah menjadi bahan bakar, sedang sampah yang berupa daun dapat diolah menjadi pupuk kompos. Metode yang digunakan adalah perancangan, pembuatan alat kemudian dilanjutkan pelatihan dan penyuluhan alat penghancur sampah dedaunan tipe vertikal. Produk akhir berupa cacahan sampah daun berukuran 1 cm atau lebih kecil. Cacahan daun ini kemudian dibasahi dengan air yang telah diberi zat EM4 untuk membantu penghancuran secara biologis. Setelah ditiriskan cacahan sampah dedaunan lalu dikemas dimasukan ke dalam plastic sekitar 3 kg dan disimpan. Setelah 2 minggu cacahan sampah yang sudah dibasahi dengan larutan EM4 tersebut siap untuk digunakan sebagai pupuk kompos.
SIFAT TEKAN DAN BENDING PANEL SANDWICH BETON RINGAN SELULAR DENGAN PENGUAT PIN BAMBU Agus Dwi Catur; Pandri Pandiatmi; Fikri Haikal
Energy, Materials and Product Design Vol. 2 No. 2 (2023): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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Abstract

Bamboo plants are a type of grass with hollow segments in the stems, cylindrical, hard and in each book has buds or branching eyes. This bamboo plant can grow around 1200 meters above sea level and lowlands with humidity conditions and broad soil types. This plant is often found growing wild around river banks, forests, or fields. This plant is used by the community to make matting, bamboo bridges, concrete reinforcement, and so on. Concrete is a mixture consisting of sand, gravel or crushed stone and other aggregates mixed together with a paste made from a mixture of cement and water to from a rock-like mass. Lightweight concrete is concrete with a weight of less than 1900 kg/m3. The value of compressive strength is smaller than ordinary concrete and is not good at conducting heat. The specific gravity of lightweight concrete varies greatly depending on the lightweight aggregate used. Sandwich components are a type of structural composite that has the potential to be developed. Sandwich composite is a composite composed of 3 layers consisting of a flat composite (metal sheet) as the surface skin (skin) and the core material (core) in the middle (the part between). Sandwich composite is a type of composite that is very suitable for resisting bending, impact, vibration and sound dampening. Sandwich composites are made to obtain a lightweight structure but have high stiffness and strength. Usually the selection of sandwich composites materials, the requirements are light weight, heat and corrosion resistance, and price is also considered. The purpose of this study is to utilize the addition of bamboo as a concrete reinforcement instead of steel, to create a very affordable cost and to find out how much influence the addition of bamboo pins has as a core reinforcement in sandwich composites on the compressive and bending strength of the lightweight concrete. The variation of the spacing of the bamboo pins used is 3 cm and 4 cm for the width, and 4 cm 6 cm for the length of each sandwich composite. The size the sandwich composites varies, while for compression testing it has a length of 15 cm, a width of 15 cm and a thickness of 7,5 cm. And for the bending test it has a length 40 cm, a width of 10 cm, and a thickness of 7,5 cm. The results showed that there was an increase in strength in the compressive test from those who did not use pins of 0,646 N/mm2, and those who used pins with a distance of 3 cm x 4 cm of 1,94 N/mm2 and a distance of 4 cm x 6 cm of 1,596 N/mm2. Where the longer the distance between the bamboo pins, the strength decreases. For the bending test it also shows an increase from without pins having a value of 0,43 N/mm2 to adding pins with a pin spacing of 3 cm x 4 cm having a value of 0,89 N/mm2 and experiencing a decrease in pin spacing of 4 cm x 6 cm with a value of 0,25 N/mm2.
PENGARUH PROSES PACK NITRIDING TERHADAP ANGKA KEKERASAN PERMUKAAN, KEULETAN DAN STRUKTUR MIKRO PADA BAJA SS 400 Sujita; Pandri Pandiatmi; Fadly Bukhari
Energy, Materials and Product Design Vol. 2 No. 2 (2023): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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Abstract

The pack nitriding process is a process of increasing the surface hardness of steel by using nitrogen with the help of organic compounds as a nitrogen source in the process. The processed steel is put into a vessel which is usually made of ceramic, glass or aluminum along with a compound used as a nitrogen source. During heating,The organic compounds used in the analysis process are generally stable at temperatures up to 570 oC and removal times of 2 to 16 hours. The purpose of the pack nitriding process is to increase the surface hardness while remaining ductile inside. In this study, nitrogen was added using a pack nitriding process after which it was quenched using water. The elimination times used were 4 and 6 hours with temperature variations of 560°C, 580°C and 600°C and presenting nitrogen for the 150 gram pack nitriding process. The highest hardness value was obtained at 580 °C with a surface hardness value of 234.84 kg/mm2 with 4 hours of removal time. And the highest impact value was shown by the specimen without treatment of 158.3 Joules. The results of testing the chemical composition of the specimens without treatment and after the pack nitriding process showed that there was an increase in the nitrogen element.
Co-Authors Agus Dwi Catur Arif Mulyanto Dimi Frasepta Ilhami Emmy Dyah Sulistyowati Fadly Bukhari Fikri Haikal I Kade Wiratama I Made Adi Sayoga I Made Wirawan I Wayan Joniarta IMade Adi Sayoga Khairil Anwar Fajrie Muhammad Rama Setiyadi Nasmi Herlina Sari Nur Kaliwantoro Paryanto Dwi Setyawan Rozan Hermansyah Rudy Sutanto Sinarep Sinarep Sujita Sujita Sujita Suteja Suteja Yusuf Ahyar Sutaryono