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All Journal Jurnal Teknik Mesin JURNAL SIMETRIK INOVTEK POLBENG Adi Widya : Jurnal Pengabdian Masyarakat Indonesia Berdaya ABDI MOESTOPO: Jurnal Pengabdian pada Masyarakat Media Perspektif Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Journal of Applied Mechanical Engineering and Renewable Energy (JAMERE) INJECTION: Indonesian Journal of Vocational Mechanical Engineering Politeknosain Jurnal Pengabdian Barelang

Chandra Dwiaji, Yudhi

Program Studi Teknik Mesin, Universitas Mercu Buana Jakarta

Author-ID : 635819

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Veterinary Other

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IbM KARANG TARUNA DAN PKK DESA KOHOD PAKUHAJI MELALUI PENINGKATAN NILAI TAMBAH DALAM PENGOLAHAN LIMBAH KELAPA SEBAGAI UPAYA PENINGKATAN PENDAPATAN MASYARAKAT Bethriza Hanum, Yudhi Chandra Dwiaji, Nurato &
ADI WIDYA : JURNAL PENGABDIAN MASYARAKAT Vol 1, No 1 (2017): ADIWIDYA
Publisher : ADI WIDYA : JURNAL PENGABDIAN MASYARAKAT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (155.047 KB)

The main objective of the community service activity is to provide the partners skills on coconut waste processing technology to transform coconut waste into products with economic value. Through this transfer of technology activity, it is expected that new entrepreneurs will emerge. In addition, it is hoped that the targeted partners will be able to transfer their newly-gained skills to the neighboring communities, particularly to the Family Welfare Program (PKK) members and coconut farmer groups in Kohod village, Pakuhaji sub-district. The approaches utilized to solve the existing problems are transfer of technology method (science and technology) and entrepreneurship to generate value-added products. The activities of the Community Service Program are divided into three stages: preparation, implementation, and monitoring. The outputs of this activity are nata de coco, briquettes, and liquid smoke. All participants could follow the activities well. They were very inquisitive about the materials shown by the presenters. Follow-up activities were conducted after the participants partially implemented the knowledge presented by the Community Service Team. The purpose of the follow-up activities is to study the impact of this community service activity. As a follow-up, the participants were required to demonstrate the production process of nata de coco, liquid smoke, and briquettes from coconut shells. It is to ensure that the participants understand each stage in the waste processing of the products. Through the evaluation, it is found that in relation to coconut processing, the participants have shown improvement in their knowledge and skills. They have also realized that there are opportunities to increase their income. Around 85% of the participants responded positively to the knowledge and skills instilled by the Community Service Team.Keywords : nata de coco, liquid smoke, briquettes, coconut shells

ANALISIS EFISIENSI BOILER TERHADAP POLA PENGOPERASIAN SOOTBLOWER DI PLTU SURALAYA Yudhi Chandra Dwiaji; Didik Margi Utama
JURNAL SIMETRIK Vol 10, No 1 (2020)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Ambon

Perusahaan Listrik Negara (Persero) PT announced electricity consumption in the first half of 2018 was 112.46 TeraWatt hour (TWh) or grew 4.7 percent on an annual basis. With the continued increase in electricity demand, electricity providers are required to be able to provide reliable, stable and efficient electricity production to the public. High efficiency in an electricity production in a power plant can be seen from the performance or efficiency of the boiler, because the power of a boiler is the same as the power of a power plant. The boiler efficiency is obtained from calculating the ratio between the output energy and the boiler input energy. Boiler efficiency is influenced by the cleanliness of the boiler from coal ash deposits. Cleaning can be done by operating the sootblower. The sootblower operation method will affect the value of boiler efficiency which gives an idea of how much efficiency the boiler when the boiler is operating. As based on the analysis of the calculations that have been made, the results of the boiler efficiency decrease when the sootblower is operating. The highest decrease in boiler efficiency during the sootblower process is 2.22%, the lowest decrease in boiler efficiency during the process is 1.08% and the average decrease during the sootblower process is 1.73%. While the impact of sootblower operation, boiler efficiency has decreased 11 times and has increased 8 times, indicating that the sootblower operating method in PLTU Suralaya is not effective.

PENGUKURAN KEEFEKTIFAN KESELURUHAN PERALATAN (OEE) SEBAGAI UPAYA MENINGKATKAN NILAI EFEKTIVITAS MESIN BLOWING Yudhi Chandra Dwiaji
Jurnal Teknik Mesin Vol 5, No 4 (2016): JTM Edisi Spesial 2016
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v5i4.1218

PT X merupakan perusahaan yang bergerak dibidang industri tekstil dengan produk yang dihasilkan berupa benang. Dalam proses pembuatan benang harus melalui enam tahapan yaitu penggunaan mesin blowing, carding, drawing, speeding, ring spinning, dan mach con. Dari keenam tahapan mesin tersebut mesin blowing merupakan tahap pertama dari proses pembuatan benang, sehingga keberlanjutan proses setelahnya tergantung dari hasil produksi mesin blowing. Sehingga untuk mengukur keefektivan mesin blowing dapat digunakan metode Overall Equipment Effectiveness (OEE). Berdasarkan data dari PT X, selama awal tahun 2015 dari bulan Januari hingga Mei 2015 terlihat keefektifan mesin blowing adalah sebesar 34,41%. Nilai tersebut jauh dibawah standar global dari OEE yang berada diangka 85%. Sehingga dapat dikatakan bahwa performa mesin blowing dari PT X disini belum efektif dan memerlukan perawatan atau perbaikan secara detail.

Analisa Kinerja Mesin Load Bank Genset Isuzu Diesel 50 KVA Terhadap Penggunaan Jenis Bahan Bakar Pertamina Dex Dan Biosolar Yudhi Chandra Dwiaji; Muh Anhar
MEDIA PERSPEKTIF : Journal of Technology Vol 13, No 2 (2021): MEDIA PERSPEKTIF
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jtmp.v13i2.1476

Generator sets are a combination of generators and drive engines combined into one unit to generate electricity. The drive engine in the generator set is generally an internal combustion engine either in the form of a motor / diesel engine with diesel fuel or an engine with gasoline. Some variants of pertamina diesel motorcycles commonly marketed in Indonesia are biosolar and Pertamina Dex. The fuel has a different centane value. The fuel at first glance looks the same, but has unequal characteristics. Comparisons that examined fuel, biosolar and pertamina dex get results if pertamina dex and biosolar have a lower fuel consumption value than diesel. This study will compare the level of fuel consumption and effective power of biosolar fuel with pertamina dex and describe the results, with the aim that Pertamina fuel users have a valid data reference in determining better fuel choices.

Analisis Perancangan Mesin Pemotongan Wire Berbasis Automatic Wire Cutting MC di PT. Mitsuba Indonesia Yudhi Chandra Dwiaji
MEDIA PERSPEKTIF : Journal of Technology Vol 12, No 2 (2020): MEDIA PERSPEKTIF
Publisher : Politeknik Negeri Samarinda

Stator Generator is a stator that uses a generator consisting of a coil and a magnet that emits an alternating voltage so that it can rotate the flywheel, the stator generator is a product of the development of the Stator Motor whose production demand is always increasing. The Stator Generator consists of Flywheel Assy and Stator Comp. In the Manufacture Stator Comp process, the longest production process is wire cutting. This research started from finding the problem of long production time. In the process of cutting wire, it is still done manually using cutting pliers by the production operator. To meet daily production needs, this wire cutting process requires two employees to carry out the production process with an ever-increasing target. From these problems, a wire cutting machine based on Automatic Wire Cutting was developed in order to get maximum and efficient production results. Calculations in material selection and cutter angle are also considered so that the results of the wire cutting process are stable and produce good cuts.

Kegiatan Iptek bagi Masyarakat (IBM) Karang Taruna dan PKK Desa Kohod Pakuhaji untuk Peningkatan Nilai Tambah dalam Pengolahan Limbah Kelapa sebagai Upaya Peningkatan Pendapatan Masyarakat Yudhi Chandra Dwiaji; Nurato Nurato; Bethriza Hanum
ABDI MOESTOPO: Jurnal Pengabdian Pada Masyarakat Vol 1, No 01 (2018): Januari 2018
Publisher : Universitas Prof. Dr. Moestopo (Beragama)

Kegiatan pengabdian kepada masyarakat ini bertujuan memberikan ketrampilan kepada mitra mengenai teknologi pengolahan limbah kelapa menjadi produk yang bernilai ekonomis melalui transfer teknologi dengan harapan setelah kegiatan ini terlaksana akan tercipta wirausaha baru. Juga diharapkan mitra yang menjadi target mampu menularkan kemampuannya kepada masyarakat sekitar dengan sasaran anggota PKK dan Karang Taruna yang berasal dari desa Kohod, Kecamatan Pakuhaji. Metoda pendekatan dalam menyelesaikan masalah yang ada yaitu dengan melakukan Metode Transfer Teknologi (Ipteks) dan Kewirausahaan (Entrepreneurship), sehingga menghasilkan produk bernilai guna. Kegiatan Pelaksanaan Program Pengabdian pada Masyarakat terbagi menjadi tiga tahap, yaitu persiapan, pelaksanaan, dan tahap monitoring. Luaran dari kegiatan ini adalah berupa produk nata de coco, briket, dan asap cair. Semua peserta dapat mengikuti kegiatan dengan baik. Hal terlihat dari besarnya rasa ingin tahu mereka tentang materi yang diberikan. Kegiatan tindak-lanjut dilakukan setelah para peserta menerapkan beberapa pengetahuan yang disampaikan oleh Tim Pengabdi. Kegiatan tindak-lanjut dimaksudkan untuk mengetahui dampak dari diadakannya kegiatan ini. Kegiatan tersebut berupa adanya kewajiban bagi para peserta untuk mempraktekkan kembali cara pembuatan nata de coco, asap cair dan briket dari tempurung kelapa agar peserta benar-benar bisa dan paham disetiap tahapan proses pengolahan masing-masing produk tersebut. Hasil evaluasi yang telah dilakukan, dapat diketahui bahwa pengetahuan peserta untuk mengolah kelapa meningkat dan membuka pikiran peserta untuk memanfaatkan peluang yang ada untuk meningkatkan pendapatan. Sekitar 85 persen, peserta secara aktif menanggapi positif keterampilan dan pengetahuan yang disampaikan oleh Tim Pengabdi.

Analisis Desain Insert Tools Dua Ouput Untuk Produksi Cutter Base Berbasis Simulasi Statis Software Solidwork 2018 Yudhi Chandra Dwiaji
INOVTEK POLBENG Vol 10, No 1 (2020): INOVTEK VOL. 10 N0 1
Publisher : POLITEKNIK NEGERI BENGKALIS

Insert Tool adalah salah satu jenis peralatan yang memegang peranan penting dalam proses produksi terutama untuk komponen-komponen yang diproduksi dalam jumlah banyak. Insert Tool juga dapat berfungsi supaya kualitas produk dapat terjaga. Diperlukannya desain Insert Tool dengan output lebih dari 1 pcs/proses adalah untuk meningkatkan kinerja Insert Tool agar dapat menunjang produksi Cutter Base. Dengan memaksimalkan dimensi Insert Tool yang saat ini berjalan di line produksi dan material yang ada di perusahaan saat ini hanya ada tiga jenis material yaitu Carbon Steel AISI 1020, Carbon Steel AISI 103, dan Carbon Steel AISI 1045. Maka Insert Tool ini di desain dengan output 2 pcs/proses. Dalam menganalisa desain Insert Tool adalah dengan menggunakan software Solidwork 2018. Dan telah didapatkan hasil desain model Insert Tool dengan komponen Insert Tool bagian atas Shank, Punch Holder, Punch dan Insert Tool bagian bawah Lower Plate, Jig Positioning dan Guide Post dengan berat total 17.86 kg dan dimensi 260 mm x 195 mm x 215 mm. Sedangkan hasil simulasi statis memperoleh data nilai yield strenght tertinggi didapat pada Carbon Steel AISI 1045 sebesar 5.300 x 10⁸ N/m², Carbon Steel AISI 1035 sebesar 2.827 x 10⁸ N/m², dan Carbon Steel AISI 1020 sebesar 2.827 x 10⁸ N/m². Hal ini membuktikan bahwa yield strenght yang di miliki material AISI 1045 lebih tinggi di bandingkan dengan material AISI 1035 dan AISI 1020. Maka jenis material yang di gunakan untuk Insert Tool ini adalah Carbon Steel AISI 1045 karena memiliki nilai yield strength yang tinggi.

PERANCANGAN REAKTOR KAPASITAS 12 m³ UNTUK EPOXY RESIN DENGAN TEKANAN KERJA 3,8 kg/cm² DAN TEMPERATUR KERJA 150℃ Yudhi Chandra Dwiaji; Lintar Aji Saputra; Ferry Setiawan
Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Vol 7 No 1 (2021): Teknika STTKD
Publisher : Sekolah Tinggi Teknologi Kedirgantaraan

Penggunaan epoxy resin di industri kimia sangat besar, epoxy resin digunakan sebagai bahan adhesif dan lapisan pelindung yang baik. Epoxy resin mempunyai densitas 1.051 kg/m³, viskositas 10.000 cps pada tekanan kerja 3.8 kg/cm² dan temperature kerja 150 ͦC dari media uap air kering, material yang ditentukan yaitu stainless steel SA 240 TP 304. Reaktor terdiri dari bejana tekan dan pengaduk/agitator, reaktor sering terjadi ledakan pada saat pengoperasian dan untuk agitator terjadi permasalahan dari daya motor dan poros yang dikarenakan kurang ketelitian dalam proses mendesain reaktor. Dalam penelitian ini reaktor didesain untuk menghasilkan tebal dari bejana tekan berdasarkan standar ASME Sec. VIII div. I, daya motor dan tipe motor yang dibutuhkan, diameter poros dan tebal dari impeller. Ada dua metode untuk mendesain reaktor yaitu perhitungan manual menggunakan microsoft Excel dan pembanding software PV Elite 2016 untuk bejana tekan, dan untuk perhitungan agitator menggunakan microsoft Excel dengan hasil akhir adalah sketsa reaktor yang desain. Hasil perhitungan ini ketebalan pada shell sebesar 3 mm, pada top torispherical sebesar 5 mm, pada bottom torispherical sebesar 5 mm dengan material SA-240 TP304 dan pada half coil sebesar 3 mm dengan material SA-283 grade C. Dan kedua metode baik manual maupun dengan software PV Elite 2016 tidak ada perbedaan yang signifikan. Perhitungan daya motor penggerak reaktor kapasitas 12 m³ sebesar 3 kW dengan putaran 72 rpm, dan spesifikasi gear motor SK 4282-100LA/4, dengan diameter poros 63,5 mm atau 2,5 inci dengan aktual defleksi sebesar 9,76 mm. dan diameter dari pitch paddle blade sebesar 805 mm dengan tebal 10 mm dan lebar blade 120 mm.

Analisis Perbandingan Teoritis Performansi Daya Mesin Mobil dan Konsumsi Bahan Bakar Spesifik Berteknologi VVT-i dan Non VVT-i Yudhi Chandra Dwiaji; Oka Mahendra
Journal of Applied Mechanical Engineering and Renewable Energy Vol 1 No 1: Februari 2021
Publisher : Indonesian Society of Applied Science

VVT-i (Variable Valve Timing with Intelligent) technology basically works to optimize engine torque at every speed and driving conditions. The mechanism will eventually produce more efficient fuel consumption and lower exhaust emissions. The workings of VVT-i technology are quite simple, namely to calculate the optimal valve opening time, the ECU (Electronic Control Unit) will adjust the engine speed, air intake volume, throttle position and water temperature. In order for the valve timing target to always be realized, the crankshaft position sensor provides a signal that is a correction response. This VVT-i system will correct valve timing or fuel and air inlet lines. Adapted to the gas pedal footing and load borne to produce optimal torque in each rotation and engine load. This technology is also claimed to have excess power that is far more optimal and saves fuel consumption, and is environmentally friendly.

ANALISIS KEBOCORAN SISTEM HIDROLIK PADA LANDING GEAR PESAWAT AIRBUS A330 SERIES MENGGUNAKAN METODE PDCA Yudhi Chandra Dwiaji
Injection: Indonesian Journal of Vocational Mechanical Engineering Vol 1 No 2 (2021): Agustus 2021
Publisher : Politeknik Negeri Ketapang

The landing gear of the Airbus 330 uses a green hydraulic system, which is currently still found several leaks which result in a decrease in flight safety because the propulsion force on the landing gear does not function normally so it must use the freefall system when landing. This study analyzes the events that cause leaks of the flexible hose system, swivel valve and pitch trimmer. Flexible hose in AircraftmMaintenance Manual has no limitations when a rapture occurs, while for swivel and pitch trimmers there are still limitations. The hydraulic system leak data was taken in January – December 2020 with a total of 49 cases of leaking hydraulic system cases in the landing gear area, where flexible hose has a very high leakage rate compared to other cases. To identify the causes of hydraulic system leaks, this study used ultrasonic internal leak measurement tools and hydraulic fluid analysis methods.

Co-Authors A Halim Ade Maulana Arvisyah, Diar Bethriza Hanum Didik Margi Utama Ferry Setiawan Firdaus Firdaus Hazizah, Rizka Latudi, Wahyu Hasan Lintar Aji Saputra Muh Anhar Muklas, Iwan Niken Sulistyowati Nurato Nurato Nurato Nurato Nurato Nurato Nurato, Nurato Oka Mahendra Sinthya Prahasti Nidyasari Sura, Anta Tio, Monika

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