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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal SOLMA Warta Penelitian Perhubungan Humanism : Jurnal Pengabdian Masyarakat Archipelago Engineering Journal of Marine-Earth Science and Technology Automotive Experiences Prosiding Seminar Nasional Pengabdian Kepada Masyarakat JOINCS (Journal of Informatics, Network, and Computer Science) KOPEMAS Rekayasa Sistem Energi dan Manufaktur Warta Penelitian Perhubungan J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin International Journal of Marine Engineering and Applications
Betty Ariani
Department Of Naval Architecture, Muhammadiyah University Of Surabaya
Religion Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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ANALISIS NUMERIK PENGARUH KECEPATAN TERHADAP SEAKEEPING KAPAL PATROLI PADA DAERAH PELAYARAN SEASTATE 7 Mohammad Taufik Ar Rozi; Betty Ariani; Dedy Wahyudi
ALE Proceeding Vol 4 (2021): Archipelago Engineering (ALE)
Publisher : Fakultas Teknik Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ale.4.2021.13-17

Abstract

Patrol boat is designed not to be slow in its movement on the water surface. To be able to move quickly and agilely, the most important requirement for this type of ship is in its maneuverability. The ship's motion at sea (seakeeping) is influenced by several things, speed, body shape, and the direction of the ship's heading waves. In this study, we analyze the six degrees of freedom, especially on the response of the ship's vertical movement, namely rolling on the sea waves of Seastate 7, especially in extreme weather in the South China Sea. The standard limit used is NORDFORSK 1987 with Light Manual Work Criteria. By entering parameters such as variations in speed and wave angle, such as 0°, 45°, 180° and 270°, then from the graph it can be seen the critical value for each movement. The calculation is carried out with the help of computational software Maxsurf Motions Advanced 20 V8i. The results of this study are the maximum roll movement value that occurs at a speed of 14 knots with a wave angle of 45° with a roll angle value of 6.40o. Furthermore, there is a decrease in the value of the movement along with the increase in the speed of the ship. The minimum roll value occurs when the wave angle is 270° when the ship's speed is 28 knots with a value of 5.69o.
Numerical Investigation of the Effect of Biodiesel-Biogas Percentage on Performance Characters and Dual Fuel Engine Emissions as Green Technology on Ship Betty Ariani; Dedy Wahyudi
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 19, No 1 (2022): February
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v19i1.44125

Abstract

The discourse on the application of green technology in the maritime sector is an interesting agenda to implement. The development of the world of shipping transportation which continues to experience an increase in numbers and services creates new problems in terms of fuel supply and the resulting emissions. So that the development of innovation and technology for ship machinery should be directly related to fossil fuel substitution technology, operational efficiency technology, improving performance and reducing emissions from the engine itself to be achievements and targets. Good engine performance directly has an impact on increasing the operational efficiency of the ship and being a good carrying capacity in the environment with minimal emission levels. A dual-fuel engine is one of the engine system concepts that has several advantages, such as simple and relatively easy modifications and the use of natural gas which tends to be cleaner. Biodiesel and biogas are examples of alternative fuels that are expected to be promising solutions for marine engineering. This research uses a numerical study on the application of dual fuel engines, the percentage of biodiesel-biogas is carried out with variations of 50:50 and 25:75, at a constant engine speed of 2200 RPM. Simulations were carried out to see the results of how the engine performance, cylinder pressure, heat release rate and HC and NOx emissions were at a constant speed variation of the fuel percentage test NOx emission decreased at a higher biogas percentage, for UHC it increased at a higher biogas percentage, it is possible to add oxygen intake through a turbocharger or supercharger as an auxiliary equipment.
UMKM Krupuk Pasir Dalam Upayapeningkatan Produksi dan Penjualan Dengan Modernisasi Peralatan Penggorengan Ponidi Ponidi; Betty Ariani; Tining Haryanti
Humanism : Jurnal Pengabdian Masyarakat Vol 3, No 3 (2022): Desember
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/hm.v3i3.15063

Abstract

Kerupuk pasir merupakan hasil produksi UMKM daerah Nganjuk yang telah lama dikenal masayarakat. Peningkatan efisiensi dalam produksi telah menjadi keharusan bagi pelaku bisnis untuk tetap mampu mempertahankan daya saingnya, tidak terkecuali UMKM. Berdasarkan hasil observasi dilapangan pada studi sebelumnya, teridentifikasi beberapa permasalahan terkait peningkatan produktifitas proses produksi. Modifikasi mesin penggorengan merupakan Langkah solusi yang diusulkan. Penelitian ini membahas modifikasi mesin penggorengan untuk meningkatkan produktivitas kerupuk pasir. Ujicoba dilakukan dengan tiga kondisi yang berbeda. Hasil peneltian menunjukkan adanya peningkatan 60%  hingga 75% efektifitasi mesin yang telah dimodifikasi. Spesifikasi alat untuk modifikasi mesin penggorengan disajikan. Penelitian ini memberikan kontribusi berharga bagi peningkatan produktifitas UMKM krupuk pasir secara umum.
Investigation of Hull Design Modifications on Fuel Consumption and Energy Efficiency Design Index (EEDI) Betty Ariani; Rizky Chandra Ariesta; Rembo Prasetya; Marista Oktaviani; Mohammad Hanifuddin Hakim
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 19, No 3 (2022): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v19i3.47029

Abstract

Currently, efforts are focused on reducing emissions to support carbon neutrality by 2050 through green technology. Green technology applies to the ship's design, port, engine selection, fuel, and operation. This study modified the hull to reduce drag and improve fuel efficiency. Changes were made based on variations in the deadrise angle, which were analyzed using numerical simulation. In the current situation, the deadrise angle is changed from 9° to 10°, 15°, and 20°. On the angle variation, the effects of changes in ship drag, fuel, and energy efficiency design index were analyzed (EEDI). The method simulates computational fluid dynamics with a Holtrop calculation method validation approach. At 12 and 6 knots above the current deadrise, resistance is reduced by 8.2% and 6.8%, respectively. The fuel efficiency achieved is 6.9% at 6 knots and 8.2% at 12 knots, resulting in monthly fuel savings of 2.43 tonnes. Furthermore, the phenomenon of the EEDI value at the lowest resistance and highest speed has a decreased performance value. Reducing the speed from 12 to 9 knots improves the performance of EEDI by 66%
OTOMATISASI MESIN PENGGORENGAN KRUPUK PASIR BEDA RASA DALAM UPAYA PENINGKATAN PRODUKSI DAN EFFISIENSI BAHAN BAKAR PADA UMKM KRUPUK PASIR UNIVERSITAS MUHAMMADIYAH SURABAYA Ponidi; Tining Haryanti; Betty Ariani
Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Vol 3 (2022): PROSIDING SEMINAR NASIONAL PENGABDIAN KEPADA MASYARAKAT - SNPPM2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Negeri Jakarta

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Abstract

Abstract One of the obstacles in the production of crackers is related to the manual cracker frying machine using firewood as the heat source for the cracker fryer, there is no temperature regulation so that it often overheats and reduces the quality of the fried crackers. The very high room temperature and the smoke from the wood-fired stove meant that not many workers survived. Seeing the existing phenomena and based on observations, it is felt that efforts are needed to improve the operational system and the performance of the sand cracker production unit. The use of human power to rotate the furnace will be replaced by an automatic control system using electrical energy via an electromotor. In addition, the replacement of wood fuel with gas fuel is carried out so that it is cleaner, equipped with controlled temperatures. The cracker frying chamber can have a relatively lower temperature and is free of smoke or soot from firewood. The temperature of the drum of the cracker sand fryer is installed with a sensor as a means of controlling the size of the temperature using an electronic control unit (ECU), thereby obtaining a truly ideal temperature for frying. By automating the frying machine there is an increase in the average frying time and quality. an average of 31.19% and an increase in production capacity of 36.67%. Meanwhile, fuel consumption has an efficiency of 28%. Abstrak Salah satu yang menjadi kendala dalam proses produksi krupuk pasir adalah terkait mesin penggoreng krupuk pasir masih manual dengan menggunakan kayu bakar sebagai sumber panas mesin penggoreng krupuk, tidak adanya pengaturan suhu sehingga kerapkali overheat dan menurunkan mutu kerupuk yang digoreng. Suhu ruang yang sangat tinggi dengan asap pembakaran dari tungku dengan bahan bakar kayu menjadikan tidak banyak tenaga kerja yang bertahan. Melihat fenomena yang ada dan berdasarkan observasi maka dirasakan perlu upaya perbaikan dalam sistem operasional dan kinerja unit produksi krupuk pasir. Pemakaian tenaga manusia untuk memutar tungku akan digantikan dengan sistem control otomatis menggunakan energi listrik melalui electromotor. Selain itu dilakukan penggantian bahan bakar kayu menjadi bahan bakar gas sehingga lebih bersih dilengkapi dengan temperatur terkontrol. Ruang penggoreng krupuk bisa relatif lebih rendah temperaturnya serta bebas dari asap maupun jelaga kayu bakar. Temperatur drum ruang penggoreng krupuk pasir dipasang sensor sebagai sarana pengontrol besar kecilnya temperature dengan menggunakan elektronik control unit (ECU), dengan demikian akan diperoleh besaran temperatur yang benar-benar ideal dalam pengorengan.Dengan melakukan otomatisasi mesin penggorengan terdapat peningkatan waktu dan kualitas penggorengan rata-rata sebesar 31,19 % dan peningktan kapasitas produksi sebesar 36,67%.Sedangkan pemakaian bahan bakar ada effisiensi sebesar 28 %.
Experimental Analysis of the Influence of a Compressed Natural Gas (CNG) - Air Mixer on Performance and Emissions in Partial Load CNG-Diesel Dual Fuel Engines Ariani, Betty; Felayati, Frengki Mohamad; Batutah, Moh. Arif
Automotive Experiences Vol 7 No 2 (2024)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.11195

Abstract

The energy crisis and the threat of global climate change have spurred various research efforts and alternative initiatives to find substitutes for fossil fuels, improve energy efficiency, and reduce emissions, especially greenhouse gases. The shipping industry is one of the contributors to global emissions that has received particular attention due to the increasing demand for maritime transportation services. The use of natural gas is considered a potential solution due to its relatively clean nature, abundant availability, and competitive pricing. The CNG-Diesel Dual Fuel Engine design is developed with the principle of using natural gas as an alternative fuel without replacing the existing diesel engine. Minimal modifications are made to the intake manifold to accommodate CNG entry. Despite its advantages, the development of dual fuel engines faces challenges, such as increased methane emissions due to the potential for incomplete combustion. This research conducts experimental studies on the use of a Venturi-like mixer in the intake manifold to enhance the homogeneity of the CNG-air mixture before entering the combustion chamber. Testing the mixer's influence is carried out under various CNG injection durations at low and high engine loads at constant speeds. The results indicate that the addition of the mixer does not immediately improve combustion quality or reduce emissions. Attention to conditioning the homogenous mixture at the required air-fuel ratio before entering the combustion chamber is crucial. The selection of the appropriate mixer design, diameter size, and placement of holes needs careful consideration
Experimental Investigation of Oxy-Hydrogen Injection in Natural Gas/Diesel Dual-Fuel Engine: Performance and Emission Analysis under Low Load Operation Ariani, Betty; Felayati, Frengki Mohamad; Batutah, Mohammad Arif
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 21, No 1 (2024): February
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v21i1.61692

Abstract

The pursuit of achieving zero carbon emissions by 2050 has led to the implementation of green technologies in the maritime industry. One crucial aspect is the adoption of alternative fuels, with a focus on non-fossil fuels to enhance energy efficiency and minimize emissions during ship operations. This study explores the innovative dual fuel diesel – Compressed Natural Gas (CNG) technology, which offers relatively low emissions with uncomplicated modifications to the diesel engine. CNG is injected into the intake manifold, addressing the need for cleaner fuel options. However, the evolution of this technology has encountered challenges such as methane slip resulting from incomplete combustion. This research proposes an intervention using hydrogen within the combustion chamber to improve combustion quality. Oxy-hydrogen gas (HHO), a carbon-free fuel derived from water through electrolysis, is considered as a potential solution. The utilization of HHO serves as a substitute for pure H2 due to its more feasible production and application, considering the global limitations in hydrogen storage and usage in transportation. The study aims to investigate the impact of HHO on the performance and emissions of dual fuel engines. Experimental tests are conducted under low loads to simulate critical operational points of the engine. Results indicate that the dual fuel system exhibits significant fuel savings, particularly with increasing injection duration. However, the need for additional oxygen to enhance combustion perfection must be balanced. HHO injection demonstrates the potential to improve engine performance, leveraging the oxygen content in HHO and the positive characteristics of hydrogen with its high Lower Heating Value (LHV). Furthermore, the research suggests that HHO injection can mitigate methane slip issues associated with dual fuel engine operations, offering a promising avenue for emission reduction
Inovasi Produk Selai Pisang Dan Sambal Ontong Untuk Peningkatan Potensi Ekonomi Desa Ngimbang Kecamatan Palang Kabupaten Tuban Ariani, Betty; Huda, Fatkur; Nasrullah, Dede; Eka Putri, Dheyani; Dewi, Wahyu Surya kartika
Humanism : Jurnal Pengabdian Masyarakat Vol 5 No 1 (2024): April
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/hm.v5i1.20758

Abstract

Abstrak Desa Ngimbang yang terletak di kecamatan Palang, kabupaten Tuban ini terkenal memiliki sumber daya alam buah pisang yang cukup melimpah. Namun, masih kurangnya pemanfaatan dan pengolahan buah pisang dan jantung pisang menjadi produk yang bernilai ekonomi tinggi. Sebagian besar petani di desa Ngimbang masih menjual pisang secara mentah atau sebagai buah. Selain itu bagi UMKM permasalahan yang ada salah satunya terkait pengurusan legalitas izin berusaha. Kelompok tim pengabdian membuat program pemberdayaan masyarakat dan UMKM di Desa Ngimbang agar dapat meningkatkan nilai ekonomi dengan cara membuat inovasi produk berbasis pisang dan membantu dalam membuat nomor induk berusaha.Metode dan tahapan yang dilakukan dalam pengabdian ini dimulai dari tahap observasi potensi dan permasalahan, diskusi tentang inovasi produk yang dibuat berupa selai pisang dan sambal ontong, pembuatan resep yang spesifikdan khas, desain kemasan produk, serta penyuluhan strategi pemasaran. Proses dan tahapan pengabdian ini dilakukan dalam kurun waktu 3 bulan. Adapun hasil yang didapatkan adalah tersedianya produk selai pisang dan sambal ontong sebagai produk khas desa Ngimbang, terdapatnya UMKM kelompok ibu – ibu yang meneruskan produksi dan kemampuan pemasaran melalui e commerce. Hal ini diharapkan membantu masyarakat desa dan UMKM di desa Ngimbang agar dapat meningkatkan nilai tambah dan daya saing produk hasil pertanian mereka menjadi lebih tinggi untuk menunjang kesejahteraan warga desa
INOVASI PRODUK DAN PENGOLAHAN LIMBAH JAGUNG SEBAGAI UPAYA PEMBERDAYAAN MASYARAKAT DESA NGIMBANG TUBAN Betty Ariani; Aristiana Prihatining Rahayu; Tri Kurniawati; Lisa Amelia; Mamy Dhatus Shima; Fitria Ika Wulandari; Yenis Febrian Lestari; Fida Muqarofah
Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5 2024 Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #4 & International Community Service 2023
Publisher : Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5 2024

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Abstract

Desa Ngimbang merupakan salah satu desa yang berada di kecamatan Palang dengan kontur pegunungan kapur yang tandus dan kering. Sebagian besar penduduknya bermata pencaharian sebagai petani jagung. Saat ini hasil panen jagung belum dimaksimalkan untuk menunjang perekonomian warga. Selain karena bergantung dari musim juga belum diolah menjadi produk yang bernilai ekonomi tinggi. Disamping itu keberadaan bonggol jagung hasil panen hanya menjadi limbah yang tidak bernilai. Kegiatan pengabdian ini bertujuan sebagai upaya dalam pemberdayaan masyarakat di desa Ngimbang melalui pembuatan briket dari limbah bonggol jagung dan susu jagung sebagai inovasi produk olahan agar dapat meningkatkan perekonomian di desa Ngimbang. Kegiatan pengabdian yang dilakukan meliputi pelatihan pembuatan briket dan susu jagung serta strategi pemasaran produk. Hasil dari kegiatan ini menunjukkan bahwa jagung dan juga limbah tongkolnya dapat diolah menjadi susu jagung dan briket yang memiliki nilai guna serta nilai ekonomis yang tinggi.
DEFORMATION ANALYSIS OF THE STRINGER WELDING PROCESS ON THE SUPPORT FRAME VIBRATING SCREEN Betty Ariani; Ponidi; Harits Akmal
Rekayasa Sistem Energi dan Manufaktur (ReSEM) Vol 2 No 1 (2024): Journal Rekayasa Sistem Energi dan Manufaktur
Publisher : Universitas Muhammadiyah Surabaya

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Abstract

Penelitian ini dilakukan untuk membandingkan besarnya deformasi yang terjadi pada proses pengelasan stringer dengan metode pengelasan 4 kali dalam 1 titik sambungan (pada rangka penyangga 01) dengan metode pengelasan 6 kali pengelasan dalam 1 titik sambungan. (pada rangka penyangga 02), dilihat dari jarak antar senar, kelurusan senar, kerataan senar melintang dan membujur. Dari perbandingan setelah proses pengelasan, deformasi rangka penyangga 01 lebih besar dibandingkan dengan deformasi rangka penyangga 02 dengan perbandingan nilai sebagai berikut: Nilai rata-rata kerataan deformasi stringer adalah: rangka penyangga 01 adalah 1,8 mm pada stringer 07 dan untuk rangka penyangga 02 sebesar 1,6 mm pada stringer 07. Nilai rata-rata deformasi tertinggi yang terjadi dari pengukuran kerataan memanjang untuk rangka penyangga 01 sebesar 3,6 mm pada posisi 05 dan 2,8 pada posisi 07 Sedangkan untuk rangka penyangga 02 sebesar 2,4 mm pada posisi 05 dan 07. Nilai rata-rata deformasi tertinggi dari pengukuran kerataan melintang untuk rangka penyangga 01 sebesar 2,3 mm pada posisi stringer 04 dan 1,8 pada posisi stringer 03. Sedangkan untuk rangka penyangga 02 adalah adalah 1,5 mm pada posisi stringer 04 dan 1,4 mm pada posisi stringer 03. Kata Kunci : Getaran Layar, Urutan Pengelasan, Deformasi  
Co-Authors ., Ponidi Akmal, Harits Andi Trimulyono Aristiana Prihatining Rahayu, Aristiana Prihatining azafa, bima Batutah, Moh Arif Chandra Ariesta, Riski Coutsar, Ardan Nagra Dede Nasrullah Dedi Budi Purwanto Dedy Wahyudi Dewi, Wahyu Surya kartika Eka Putri, Dheyani Fatkur Huda Fauziana, Windyanisa Afifah Fida Muqarofah Fitria Ika Wulandari Frengki Mohamad Felayati Hadi Kusnanto Harits Akmal Haryanti, Tining Lisa Amelia Lukman Hakim M Yasin M. Hanifuddin Hakim Mamy Dhatus Shima Mohammad Taufik Ar Rozi Muhammad Iqbal Muhammad Iqbal Mundakir Oktaviani, Marista Ponidi Ponidi Ponidi Prasetyawati, Dian Rembo Prasetya Rizky Chandra Ariesta Robby, Burhana ROHMAN, M.TAUFIQUR Sadewa, Reno Adhianta Samuel Samuel Samuel Samuel Sofana, Ilyas Solikah, Amanat Syahrir, Irwan Tining Haryanti Tri Kurniawati Winda Amalia Herdianti Yenis Febrian Lestari