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All Journal JTTM: Jurnal Terapan Teknik Mesin Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Bandung Conference Series: Economics Studies
Win Hendrawan
Universitas Kebangsaan Republik Indonesia
Aerospace Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Pemberdayaan Masyarakat Melalui Pengolahan Sampah Organik untuk Menghasilkan Pakan Ternak di Desa Situraja Utara Sumedang Azhar Affandi; Eddy Jusuf; Asep Dedy Sutrisno; Dindin Abdurohim BS; Win Hendrawan
Bandung Conference Series: Economics Studies Vol. 4 No. 2 (2024): Special Issue: Perguruan Tinggi Mandiri Gotong Royong Membangun Desa (PTMGRMD)
Publisher : UNISBA Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/bcses.v4i2.12515

Abstract

Abstract. Waste management problems are still in the spotlight, one of which is at the waste management site in Situraja Utara Village, Situraja District, Sumedang Regency. Among others, waste is mixed and has not been sorted, people's behavior of burning waste, and lack of garbage cans. The community service team empowers the community in terms of waste management, especially organic waste. Social and economic approaches are carried out in order to shape the motivation and environmental awareness of the community. This activity aims to encourage the manufacture of superior village products, through processing waste into fish or livestock feed with bioconversion methods. The results of activities are in the form of assistance in making products to setting marketing targets. The potential of waste management site in Situraja Utara village to produce economically valuable products must be encouraged to be sustainable. Abstrak. Permasalahan pengelolaan sampah masih menjadi sorotan, salah satunya di Tempat Pengelolaan Sampah (TPS) di Desa Situraja Utara Kecamatan Situraja Kabupaten Sumedang. Antara lain sampah tercampur dan belum dilakukan pemilahan, perilaku masyarakat kebiasaan membakar sampah, dan kurangnya tong sampah. Tim pengabdian masyarakat melakukan pemberdayaan masyarakat salam pengelolaan sampah khususnya sampah organik. Pendekatan secara sosial dan ekonomi dilakukan agar membentuk motivasi dan kesadaran lingkungan masyarakat. Kegiatan ini bertujuan mendorong pembuatan produk unggulan desa, melalui pengolahan sampah menjadi pakan ikan atau ternak dengan metode biokonversi. Hasil kegiatan berupa pendampingan pembuatan produk sampai dengan menetapkan target pemasaran. Potensi TPS Situraja Utara untuk menghasilkan produk bernilai ekonomis harus didorong agar berkelanjutan.
Analisis kegagalan pada blade turbin PLTU 400 MW Win Hendrawan; Meilinda Nurbanasari
JTTM : Jurnal Terapan Teknik Mesin Vol 4 No 1 (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.v4i1.433

Abstract

Blade turbin PLTU 400 MW ditemukan dalam keadaan patah. Kondisi ini diketahui pada saat major inspection dilakukan, dimana turbin sudah beroperasi selama 35 tahun. Patah pada blade sudah terjadi cukup lama sehingga terbentuk kerak oksidasi pada area patahan. Blade tersebut terletak pada tingkat Low Pressure (LP) Turbin. Material blade adalah Stainless Steel 17-4 PH. Analisis kegagalan dilakukan untuk mengetahui penyebab patah pada blade sehingga tidak terulang kembali dan mendapatkan rekomendasi untuk operasi turbin selanjutnya. Metodenya dengan melakukan verifikasi material blade, investigasi kegagalan dengan pemeriksaan visual dan fraktografi. Hasil dari investigasi menunjukkan bahwa kegagalan yang terjadi bukan berasal dari material blade. Penyebab patah diinisiasi oleh cacat pada leading edge karena benturan benda asing atau Foreign Object Damage (FOD). Pada saat penelitian ini dilakukan FOD tersebut belum bisa diidentifikasi wujudnya. Pada area blade yang patah terdapat bukti berupa beachmark, sehingga patah yang terjadi adalah patah fatigue. Perawatan berkala dengan interval yang lebih pendek perlu dilakukan untuk mencegah kegagalan terulang
Morphological Characterization and Optical Properties of CIGS/TiO2 Thin Films Using Sputtering Technique SB. Widia Rezaly Biharu Hayati; Erdiansyah Erdiansyah; Win Hendrawan
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 68 No 3 (2024): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v68i3.374

Abstract

Solar energy as a renewable energy source, is currently an important alternative to meet energy needs because of its unlimited amount and environmentally friendly. Almost the entire surface of the earth receives sunlight optimally, so breakthroughs are needed to transform the solar energy into electricity. In the research development process that was to develop advanced materials to support the development of alternative energy. Thin film synthesis was carried out using the Physical Vapor Deposition (PVD) of Direct Current (DC) Sputtering method on Indium Tin Oxide (ITO) substrates using Copper Indium Gallium Selenide (CIGS) and TiO2 with deposition time variations of 30, 45, and 60 minutes. Based on the test results, thin film surface with the largest grain size is 266.75 nm at CIGS/TiO2 45 minutes. This shows that more CIGS and TiO2 atoms are released from the target surface, forming clumps that cover the substrate surface along with the addition of deposition time. The longer the deposition time shows the higher the absorbance value. The highest absorbance value is 4.60873, which was achieved by 60 minutes CIGS/TiO2 sample with wavelength of 271 nm.
Co-Authors Abdurohim, Dindin Asep Dedi Sutrisno Azhar Affandi Eddy Jusuf Erdiansyah Erdiansyah Erdiansyah Meilinda Nurbanasari SB. Widia Rezaly Biharu Hayati