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All Journal Jurnal Karya Pengabdian Teknik Mesin Energy, Materials and Product design
Tri Rachmanto
Universitas Mataram
Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering

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 1 
PENYULUHAN PERAWATAN MESIN PENGGILING PERAK DI JEN’S SILVER DUSUN AMPAN LOLAT DESA UNGGA PRAYA BARAT DAYA LOMBOK TENGAH. i dewa ketut okariawan; Yesung Allo Padang; Tri Rachmanto; Sugiman Sugiman; Salman Salman
JURNAL KARYA PENGABDIAN Vol 4, No 1 (2022): April, Jurnal Karya Pengabdian
Publisher : Universitas Mataram

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Abstract

ABSTRAKDesa Ungga, Kecamatan Praya Barat Daya, Lombok Tengah, adalah salah satu sentra kerajinan perak. JEN’S Silver UKM yang bergerak dibidang kerajinan perak. Adapun permasalahan yang dihaapi oleh UKM yaitu ketidak pahaman mereka dalam pengoprasian dan perawatan mesin penggiling perak yang mereka miliki. Dengan adanya permasalahan ini maka perlu diadakan perbaikan sistem dan penyuluhan mengenai perawatan mesin penggiling perak di UKM tersebut. Adapun tahap pelaksannan kegiatan ini yaitu 1. perancangan dan pembuatan kontrol arah putaran mesin penggiling perak 2. Penyuluhan perawatan mesin penggiling perak dimana keberhasilannya dihitung dengan skala likert. Hasil yang didapat dari kegiatan ini adalah dengan sistem kontrol arah putaran mesin penggiling perak maka pengoprasiannya menjadi lebih mudah dan sangat aman. Dengan penyuluhan terjadi peningkatan pengetahuan mengenai komponen dan perawatan mesin yaitu paling tinggi terjadi pada point pelumas gemuk dan pemakaiannya adalah sebesar 60 % dan paling rendah terjadi pada point roll perak yaitu 20 %.Kata Kunci : Sitem konrol arah putaran, penyuluhan, skala likert ABSTRACTUngga Village, Southwest Praya District, Central Lombok, is one of the silver handicrafts. JEN’S Silver UKM which is engaged in silver handicrafts. The problems faced by UKM are their lack of understanding in the operation and maintenance of their silver rolling machines. With this problem, it is necessary to improve the system and provide counseling regarding the maintenance of silver rolling machines in these UKM. The stages of implementing this activity are 1. designing and making control of the direction of rotation of the silver rolling machine 2. Counseling on the maintenance of silver rolling machines where success is calculated with a Likert scale. The result of this activity is that by controlling the direction of rotation of the silver rolling machine, its operation becomes easier and very safe. With counseling there was an increase in knowledge about machine components and maintenance, the highest occurred at the point of grease lubricant and its use was 60% and the lowest occurred at the silver roll point, which was 20%.Keywords: rotation direction control system, counseling, Likert scale
PENGARUH VARIASI TINGGI SUDU TURBIN DARI TINGGI BASIN TERHADAP DAYA DAN EFISIENSI TURBIN VORTEX Tri Rachmanto; Mirmanto; Randi Lelio
Energy, Materials and Product Design Vol. 3 No. 1 (2024): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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Electrical energy is a very important need for human life in various aspects, both on a large and small scale. One of the efforts to reduce the use of fossil fuels is to use natural resources that are not limited and can be renewed. Micro Hydro Power Plant (MHP) is an alternative source of electricity for the community, one of which is a vortex turbine. The vortex turbine is one type of micro hydro turbine that utilizes a whirlpool as a blade drive. This study examines the effect of blade height variations of 25%, 30%, and 35% of the basin height on power and efficiency. The results showed that the largest turbine power at 25% blade height variation from the basin height with a discharge of 0.009 m3/s was 3.294 Watt with an efficiency of 51.10%. The largest turbine power at an angle variation of 30% of the basin height with a discharge of 0.009 m3/s is 3.364 Watt with an efficiency of 50.66%. The largest turbine power at an angle variation of 35% of the basin height with a discharge of 0.009 m3/s is 4.062 Watt with an efficiency of 62.35%. Turbine power based on two-way anova analysis shows that between variations in turbine height and flow discharge have a significant effect on the turbine power produced and turbine efficiency based on two-way anova analysis shows that between variations in turbine height and flow discharge have a significant effect on the turbine efficiency produced.
ANALISA PENGARUH KAMPUH PENGELASAN DAN PERLAKUAN PANAS TERHADAP SIFAT MEKANIK SAMBUNGAN LAS BAJA SUP9 I Made Mara; Tri Rachmanto; Syamsul Hadi
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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The development of science and technology which is growing rapidly greatly affects industries that produce machine elements that use steel as the main raw material, steel is widely used in construction. This has caused many mechanics to join steel using the SMAW process without regard to the welding method and mechanical properties which causes the steel not to be connected perfectly, thereby endangering safety. The purpose of this study was to see the effect of seam variation V, K and X and normalizing, quenching and no heat treatment on the mechanical properties of welded joints in SUP9 steel. From the variation of seam and heat treatment, there were 9 combinations with 3 repetitions. The results of this study indicate that the weld seam and heat treatment affect the tensile strength and impact price of SUP9 steel. The most optimal treatment to produce high tensile strength is seam variation X with quenching heat treatment with ASTM E8 specimen shape having an average tensile stress value of 84.23 Kgf/mm2, and for the most optimal treatment to produce high impact values ​​is variation of seam X with normalizing heat treatment with specimen form ASTM E23 has an average impact value of 1.11 J/mm2.
PENGARUH VARIASI pH DAN RAGI TERHADAP VOLUME DAN KADAR BIOETANOL DARI BAHAN MOLASE Nurchayati; Sugeng Kuswanto; Tri Rachmanto
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

Energy is a necessity in carrying out economic activities in Indonesia, both for consumption needs and production activities in various business sectors. As a natural resource, energy must be used optimally for the benefit of society and its management must be based on the principles of sustainable development. Bioethanol is a renewable and environmentally friendly energy that can be used as an alternative to fossil fuels. The use of bioethanol as fuel has several advantages, namely the high oxygen content of bioethanol (35%) so that it can produce clean fuel. The purpose of this study was to determine the effect of variations in pH and yeast on the volume and content of bioethanol from molasses material using and the drying time used was 48 hours. From variations in pH and yeast, 9 types of treatment were obtained with 3 repetitions so that the total sample was 27. From the results of the study, the average volume of alcohol produced was at most 550.67 ml in the yeast mass treatment 10 gr/l with a pH of 4.5 and the least was in the yeast mass treatment 15 gr/l with a pH of 4.2 of 432 ml. Whereas the highest average yield was 91.67% for yeast mass of 10 gr/l with a pH of 4.2 and the lowest was found for yeast mass of 15 gr/l with a pH of 4.8 of 88.33%.
Peningkatan Kesiapsiagaan Menghadapi Gempa dan Tsunami Melalui Simulasi pada Siswa SD di Kabupaten Lombok Tengah Humairo Saidah; I Dewa Gede Jaya Negara; Rohani Rohani; Nurchayati Nurchayati; Tri Rachmanto
JURNAL KARYA PENGABDIAN Vol. 6 No. 1 (2024): 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.v6i1.170

Abstract

SDN 1 Tampah dan SMPN8 Satap adalah dua sekolah dalam satu atap yang ada di Dusun Tampah Desa Mekar Sari, Kabupaten Lombok Tengah. Lokasi sekolah ini berdekatan dengan pantai Selatan Lombok yang rawan gempa disertai tsunami. Jumlah siswa yang banyak dan keadaan gedung sekolah yang mulai rusak menambah tingkat kerawanan sekolah ini jika sewaktu-waktu terjadi gempa dan tsunami. Hal ini menunjukkan betapa pentingnya dilakukan pembekalan untuk peningkatan kesiapsiagaan siswa dan guru melalui penyuluhan dan simulasi. Kegiatan penyuluhan dan simulasi bekerjasama dengan BPBD Kabupaten Lombok Tengah dengan khalayak sasaran siswa kelas 6 SD dan seluruh siswa SMP serta para guru. Kegiatan berlangsung dengan lancar dan tertib, dan diikuti dengan penuh antusias oleh guru dan siswa. Kegiatan ini telah memberikan pengetahuan dasar tentang cara menyelamatkan diri jika gempa terjadi saat di sekolah. Baik para guru maupun siswa sangat merasakan manfaat dari kegiatan ini dan bertambah pengetahuan dan kesiapsiagaannya menghadapi bencana gempa dan tsunami.
Penyuluhan dan Pelatihan Maintenance Mesin Diesel Satu Silinder Type Horisontal Wirawan Made; Rudy Sutanto; Tri Rachmanto; Yudhyadi I.G.N; Nur Kaliwantoro
JURNAL KARYA PENGABDIAN Vol. 6 No. 1 (2024): 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.v6i1.171

Abstract

Dewasa ini perkembangan teknologi semakin pesat di berbagai bidang dengan tujuan untuk efisiensi dan efektivitas. Tidak terkecuali pada bidang pertanian menggunakan mesin diesel satu silinder sebagai motor penggerak pada peralatan penunjangnya . Pada saat ini kelompok tani dharma karya memiliki beberapa peralatan yang berpengerak mesin diesel. Dari diskusi dengan ketua kelompok tani disampaikan beberapa masalah dalam pemeliharaan mesin diesel. Maka tim pengabdian pada masyarakat Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram dirasa perlu untuk memberikan penyuluhan dan pelatihan terhadap kelompok tani tentang cara memelihara dan servis ringan terhadap peralatannya. Materi pelatihan disampaikan secara diskusi dengan beberapa anggota kelompok tani. Pada saat diskusi ada bebrapa masalah dan pertanyaan dalam penggunaan mesin yang dimilki oleh kelompok tani misalnya, Salah satu mesin dieselnya, jika bahan bakarnya kurang dari setengah tangki mesin sulit hidup, hal-hal apa yang perlu dilakukan agar mesin diesel awet dan tahan lama.Secara umum kegiatan pengabdian ini dapat berjalan dengan baik dan lancar dengan adanya kerjasama antara tim pengabdian dan perwakilan kelompok tani dimana Pekasek kelompok tani yang memfasilitasi tempat untuk pelaksanaan kegiatan ini, perwakilan dari kelompok tani untuk mengikuti kegiatan ini.
EFISIENSI WAKTU FERMENTASI DAN VARIASI BRIX TERHADAP HASIL AKHIR KADAR DAN VOLUME BIOETANOL PADA LIMBAH GULA (MOLASSES): EFFICIENCY OF FERMENTATION TIME AND BRIX VARIATION ON FINAL RESULTS AND VOLUME OF BIOETHANOL IN WASTE SUGAR (MOLASSES) Rizki Septiawan; Tri Rachmanto; Nurpatria
Energy, Materials and Product Design Vol. 3 No. 2 (2024): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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Abstract

ABSTRACT The use of fossil fuels in everyday life is increasing. Fossil fuels that come from elements of living things that have been buried for thousands or even millions of years are non-renewable or non-renewable, so the more use of fossil fuels the longer the time will run out. Therefore, bioethanol can act as a substitute or alternative energy to reduce the use of fossil fuels. Bioethanol is a liquid resulting from sugar fermentation from a carbohydrate source (cellulose) using microbes. The purpose of this study was to determine the efficiency of fermentation time on the final yield of bioethanol content and volume from bagasse (molasses) using various Brix values ​​of 14%, 15%, and 16% and the fermentation time used was 36 hours, 48 ​​hours, and 60 hours. From the variation of Brix value and fermentation time, 9 kinds of treatment were obtained with 3 repetitions so that the total sample was 27. The results of this study indicate that the fermentation time factor is the dominant factor in determining the volume of alcohol, and the Brix factor is the dominant factor in determining the concentration. The most optimal treatment to produce the highest volume of alcohol was the 14% Brix variation with a 36-hour fermentation time variation with an average bioethanol volume of 1145.3 mL, and the most optimal treatment to produce high alcohol content was 16% Brix variation with an average the moderate alcohol content is 84%.   Keywords: Bioethanol, Molasses, Brix, Time efficiency, Fuel
PENGARUH VARIASI TEMPERATUR FERMENTASI TERHADAP KADAR DAN VOLUME ALKOHOL DALAM PEMBUATAN BIOETANOL DARI LIMBAH GULA (Molasse) MENGGUNAKAN MIKROAERASI: THE EFFECT OF FERMENTATION TEMPERATURE VARIATION ON ALCOHOL CONTENT AND VOLUME IN THE PRODUCTION OF BIOETHANOL FROM WASTE SUGAR (Molasses) USING MICROAERATION Tri Rachmanto; Luis Pratama Putra; Nur Kaliwantoro
Energy, Materials and Product Design Vol. 4 No. 1 (2025): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/empd.v4i1.2358

Abstract

Penyediaan pasokan energi pada masa depan merupakan suatu masalah yang selalu menjadi perhatian seluruh masyarakat dunia. Hal ini disebabkan karena sumber penghasil bahan bakar minyak (BBM) yaitu fosil semakin lama semakin berkurang. Salah satu upaya untuk mengurangi konsumsi masyarakat terhadap bahan bakar fosil adalah dengan memanfaatkan energi alternatif terbarukan yaitu bioetanol. Tujuan penelitian ini untuk mengetahui pengaruh dari variasi temperatur fermentasi terhadap kadar dan volume alkohol dari limbah gula (molases) dengan menggunakan mikroaerasi. Metode penelitian yang digunakan yaitu metode experiment. Variasi temperatur fermentasi yang digunakan yaitu 30oC, 32oC, 34oC, 36oC, 38oC. Proses fermentasi dilakukan selama 48 jam terhadap 30 Liter cairan molase. Namun sebelum itu, untuk memproduksi bioetanol dilakukan proses pengembangbiakan mikroorganisme selama 3 jam. Kemudian dilakukan proses destilasi untuk mendapatkan kadar dan volume alcohol dari proses fermentasi molases. Hasil penelitian menunjukkan bahwa faktor variasi tersebut berpengaruh terhadap kadar dan volume alkohol yang dihasilkan. Perlakuan yang paling optimal untuk menghasilkan kadar alkohol paling tinggi adalah temperatur 34oC dengan rata-rata kadar alkohol sebanyak 84% sedangkan perlakuan yang paling optimal untuk menhasilkan volume alkohol paling tinggi adalah temperatur 32oC dengan rata-rata volume alkohol sebanyak 668,7 mL.
Co-Authors Humairoh Saidah I Dewa Gede Jaya Negara I.D.K. Okariawan I.M. Mara Luis Pratama Putra Mirmanto N. Nurchayati Nur Kaliwantoro Nurchayati Nurpatria Randi Lelio Rizki Septiawan Rohani Rudy Sutanto Salman Salman Sugeng Kuswanto Sugiman Sugiman Syamsul Ph.D M.A. Hadi Wirawan Made Yesung Allo Padang Yudhyadi I.G.N