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All Journal Jurnal Rekayasa Mesin Indonesian Journal of Engineering and Science (IJES) International Journal of Research in Vocational Studies (IJRVOCAS) Proceeding of International Conference on Science, Education, and Technology Jurnal Pelita Sriwijaya Bersama : Jurnal Pengabdian Masyarakat
Akbar Teguh Prakoso
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Sriwijaya, 30662 Indralaya, Sumatera
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PREDICTION OF PLASTIC-TYPE FOR SORTING SYSTEM USING DECISION TREE MODEL Astuti Astuti; Anthony Costa; Akbar Teguh Prakoso; Irsyadi Yani; Yulia Resti
Indonesian Journal of Engineering and Science Vol. 4 No. 1 (2023): Table of Content
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v4i1.86

Abstract

Plastic is the most widely used inorganic material globally, but its hundred-year disintegration time can harm the environment. Polyethylene Terephthalate (PET/PETE), High-Density Polyethylene (HDPE), and Polypropylene are all commonly used plastics that have the potential to become waste (PP). An essential first step in the recycling process is sorting out plastic waste. A low-cost automated plastic sorting system can be developed by using digital image data in the red, green, and blue (RGB) color space as the dataset and predicting the type using learning datasets. This paper proposes the Decision Tree model to predict the three plastic-type sorting systems based on discretizing predictor variables into two and three categories. The resampling method of k-fold cross-validation with ten folds for less biased. Discretization of the predictor variables into three categories informs that the proposed decision tree model has higher performance compared to the two categories with an accuracy of 81.93 %, a recall-micro of 72.89 %, a recall-macro of 72.30 %, a specificity-micro of 86.45%, and the specificity-macro of 86.51%, respectively. The micro is determined by the number of decisions made for each object. In comparison, the macro is calculated based on the average decision made by each class.
ASSESSMENT MATERIAL SELECTION FOR CHAIN - SUBMERGED SCRAPPER CONVEYOR Gunawan Gunawan; Amir Arifin; Irsyadi Yani; M. A. Ade Saputra; Barlin Oemar; Zulkarnain Ali Leman; Dendy Adanta; Akbar Teguh Prakoso
Indonesian Journal of Engineering and Science Vol. 4 No. 1 (2023): Table of Content
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v4i1.92

Abstract

Chain–submerged scrapper conveyor bottom ash handling in the petrochemical industry has failed several times and was repaired with AISI 420, which can only operate for three months. AISI 420 is recommended in applications requiring moderate corrosion resistance, high hardness, excellent wear resistance, and good edge retention in cutting surfaces. The initial cracks and fractures occur in the pin-link joint hole, which causes chain failure. Some evaluation has been performed for both as-received and failed links. It can be concluded that chain link failure occurs due to fatigue failure with low-stress levels. Microstructure observation, XRD, and hardness properties showed no significant difference in both as-received and failed links. Since the operating conditions of the chain are in a corrosive environment, experiencing dynamic loading and working temperatures between 23 ºC and 60 ºC, the selection of HSL materials such as AISI 4140 should be considered.
Numerical Investigation of the Effect Infill from Different Unit cells Structure on Mechanical Behaviour Imam Akbar; Martin Luther King; Zulkarnain Fatoni; Togar PO Sianipar; Sukarmansyah; Akbar Teguh Prakoso
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 1 (2023): IJRVOCAS - April
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i1.168

Abstract

This study aims to identify the effect of infill on mechanical behaviour, especially the yield stress and modulus young of polylactide materials with different unit cell structures such as gyroid, diamond, square, and re-entrant but same porosity with value of 60%. Using Computational aided design (CAD) software and analyzed using the finite element method. The results show that the square structure has the highest strength in terms of mechanical behaviour such as yield stress with a value of 27 MPa, while the gyroid is 25.5 MPa, diamond is 25.3 MPa, re-entrant is 23.3 MPa and young modulus square is 2233MPa gyroid is 2199 MPa, diamond is 2195 MPa re- entrant 2182 MPa. In this study, it was also found that the thickness struth of the unit cell and modulus young had a very strong linear correlation with R2 = 0.96 which explains that the higher the thickness value, the higher the modulus young value. The results of this study also show that although lattice structures, especially square ones, have the highest value, TPMS structures, such as gyroids and diamonds, have more stable performance because these structures have an even stress distribution, thereby reducing the risk of failure of the structure. besides that, the researchers concluded that this TPMS can be used as a solution to improve structural performance.
The Effect of Loading Parameters and Dynamic Immersion Time on the Fatigue Life of Magnesium Bone Scaffolds Risky Utama Putra; Nanda Yusril Mahendra; Dicky Pratama Putra; Akbar Teguh Prakoso; Hasan Basri; Hendri Chandra; Amir Putra Md Saad; Ardiyansyah Syahrom
International Conference on Science, Education, and Technology Vol. 9 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Bone scaffolding implants are used in orthopedic applications to aid bone growth and regeneration. However, these implants degrade over time and will also be exposed to the burden of physiological activity during use, which can affect their mechanical properties and fatigue life. The aim of this study was to investigate the effect of degradation time and physiological activity load on changes in bone scaffolding implant morphology on fatigue life and determine significant parameters using the ANOVA method. The study was conducted using numerical simulation using finite element method in software Comsol Multiphysics. Bone scaffolding implants are exposed to cyclic fatigue loads and degradation over time as well as loads of different physiological activities. The results showed that degradation time and physiological activity load had a significant effect on changes in bone scaffolding implant morphology and fatigue life. Increased degradation time and physiological activity load lead to decreased implant fatigue life. The results of the analysis using the ANOVA method showed that the degradation time of factors affecting fatigue with a percentage value of 64.56% was significant on morphological changes and the load of physiological activity had an influence of 35.44% on the fatigue life of bone scaffolding implants. This study emphasizes the importance of considering degradation time and physiological activity load in the design and evaluation of bone scaffold implants. Analysis using the ANOVA method can help to determine significant parameters that affect implant performance and improve implant design to extend fatigue life.
PEMANFAATAN LIMBAH PLASTIK DALAM PEMBUATAN FILAMEN 3D PRINTER MENGGUNAKAN MESIN EKSTRUSI PADA LAB KONVERSI ENERGI UNIVERSITAS SRIWIJAYA Akbar Teguh Prakoso; Steven Davin; Nanda Yusril Mahendra; M. A. Ade Saputra; Hasan Basri
Jurnal Lentera Nusantara Vol 1 No 2 (2022): Jurnal Pelita Sriwijaya
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/jps.v1i2.69

Abstract

Salah satu material yang banyak menyebabkan pencemaran lingkungan maupun pencemaran udara berasal dari material plastik. Material plastik sendiri diperkirakan akan meningkat 850 ton pada tahun 2010 sehingga terbentuklah suatu tujuan untuk mendaur ulang limbah-limbah plastik tersebut yang menggunakan metode yang berpotensi dalam daur ulang limbah plastik adalah menggunakan mesin ekstrusi untuk proses manufaktur filament 3D printer. Proses ektrusi menggunakan alat ekstruder dengan cara membentuk potongan-potongan kecil yang kemudian akan dileburkan dengan suhu tinggi yang kemudian akan dikeluarkan melalui nozzle dalam bentuk filament sesuai geometri pada filament pada umumnya. Mesin ekstrusi atau mesin ekstruder dirancang sedemikian rupa agar dapat mendaur ulang limbah-limbah plastik tersebut dimana terdapat hooper untuk penampang limbah plastik yang telah dihancurkan menjadi potongan - potongan yang kemudian didorong menggunakan motor screw lalu masuk ke tahap pemanasan yang dimana pada tahap ini sangat berpengaruh terhadap hasil ekstrusi dan menghasilkan filament yang dikeluarkan dari noozle. Hasil dari filament tersebut dapat dibuat berbagai jenis bentuk dan banyak kegunaan yang dicetak menggunakan mesin 3d printer. Pada kegiatan ini memperkenalkan teknologi mesin ekstrusi serta memberikan alternatif dalam pemanfaatan limbah plastik yang nantinya akan memberikan peluang bagi masyarakat yang bergerak pada industri kreatif. Hasil kegiatan pembuatan mesin ekstrusi yang memanfaatkan limbah plastik diperkenalkan kepada teknisi lab konversi energi agar dapat mengoperasikan mesin ekstrusi untuk memproduksi filament.
PENERAPAN MESIN EKSTRUSI FILAMEN 3D PRINTER BERBASIS MATERAL PLA PADA LINGKUP MASYARAKAT FATHURRAHMAN SULAIMAN; HASAN BASRI; AHMAD WISNU SULAIMAN; M.A. ADE SAPUTRA; AKBAR TEGUH PRAKOSO
Jurnal Lentera Nusantara Vol 2 No 1 (2023): Jurnal Pelita Sriwijaya
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/jps.v2i1.79

Abstract

Kegiatan pengabdian ini diawali dengan mendefinisikan masalah yang ingin diselesaikan yaitu diperlukannya solusi untuk mengurangi limbah plastik. Berdasarkan definisi masalah tersebut dihasilkanlah solusi membuat mesin ekstrusi filamen yang mampu menghasilkan filamen PLA agar dapat menggantikan plastik konvensional dengan PLA yang lebih ramah lingkungan. PLA mempunyai sifat biodegradable yaitu dapat terurai secara alami, hal ini membuat PLA ideal untuk menggantikan plastik konvensional karena tidak merusak lingkungan. Mesin ekstrusi filamen ini memiliki spesifikasi berikut : Berdimensi 80 x 50 x 120 cm, mempunyai daya penggerak motor 0.75 kW, menggunakan sistem elektrik untuk mengatur kecepatan putaran motor dan temperatur elemen pemanas, dan sistem transmisi menggunakan poros dan kopling. Pada kegiatan pengabdian ini akan memperkenalkan teknologi mesin ekstrusi serta memberikan alternatif untuk menggantikan plastik konvensional yang nantinya akan memberikan peluang bagi masyarakat yang bergerak pada industri kreatif. Setelah kegiatan ini diharapkan bagi masyarakat, khususnya teknisi laboratorium konversi energi dapat mengoperasikan mesin ekstrusi untuk memproduksi filament PLA.
PELATIHAN PENERAPAN ISO R230 UNTUK UJI KELAYAKAN DAN PERAWATAN MESIN PERKAKAS DALAM MENINGKATKAN KUALITAS PADA PEMBUATAN KOMPONEN MESIN MUHAMMAD YANIS; HASAN BASRI; MARWANI MARWANI; AKBAR TEGUH PRAKOSO; ELLYANIE ELLYANIE; ZULKARNAIN ZULKARNAIN; DENDY ADANTA; HENDRI CHANDRA; ZAINAL ABIDIN; GUSTINI GUSTINI
Jurnal Lentera Nusantara Vol 2 No 1 (2023): Jurnal Pelita Sriwijaya
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/jps.v2i1.112

Abstract

Pembuatan komponen mesin menggunakan mesin perkakas dapat menghasilkan produk yang teliti. Agar kemampuan tersebut tetap terjamin, mesin perkakas harus selalu dalam kondisi baik. Masalah utama yang sering dihadapi industri kecil adalah kurangnya pengetahuan tentang perawatan mesin dan cara pengujian ketelitian geometri mesin perkakas. Kegiatan yang telah dilakukan adalah salah satu upaya meningkatkan pengetahuan dan ketrampilan tentang penerapan ISO R230. Kegiatan ini terdiri atas uji kelayakan dan perawatan mesin perkakas dalam meningkatkan kualitas produk yang dibuat. Kegiatan dilakukan di Industri Kecil mesin perkakas P.T. Chevy Sintong Palembang. Pelaksanaan kegiatan berupa penyuluhan, demonstrasi cara pengujian geometri mesin perkakas dan melakukan perbaikan ringan pada salah satu mesin bubut yang ada. Kegiatan ini mendapat tanggapan positif terutama dari pimpinan industri kecil dan mengharapkan kegiatan lain yang bertujuan untuk mengoptimumkan kinerja mesin perkakas yang mereka miliki
Rancang Bangun Turbin Angin Darrieus 3 Sudu Skala Lab Akbar Teguh Prakoso; M. Alif Abiyyu; Dendy Adanta
Jurnal Rekayasa Mesin Vol. 23 No. 2 (2023): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v23i2.539

Abstract

This research aims to design and build a Darrieus wind turbine with three blades on a laboratory scale. The Darrieus wind turbine was chosen because of its efficient design in utilizing wind speed to produce mechanical energy. The research methodology involves several stages, starting from designing turbine blades that use PVC pipes that are heated and formed into flat plates, to designing turbine frames from hollow iron and iron plates. The blade and frame design is optimized to ensure stable and efficient turbine rotation. The turbine is equipped with a washing machine dynamo to increase rotational stability compared to using a fillow block. The research results show that the Darrieus turbine design with three blades is capable of producing stable and efficient rotation. The rotation speed of the turbine is influenced by wind speed, blade area, and blade curve length. Apart from that, the height between the frame and blades also affects the stability of the rotation. The design calculation results show that the turbine sweep area is 24617 m² with a wind speed of 3 m/s resulting in a tip speed ratio of 5 and a turbine rotation speed of 15 m/s. The conclusion of this research is that the Darrieus wind turbine with three blades can function well on a laboratory scale. Proper blade and frame design is critical to achieving stable and efficient rotation. This turbine has the potential to be further developed as a renewable energy solution in Indonesia.
PLTS 12 WATT UNTUK LAMPU PENERANGAN JALAN DI DESA DABUK REJO, KAB. OGAN KOMERING ILIR Sari, Dewi Puspita; Syofii, Imam; Hermawan, Rudi; Yadi, Farhan; Adanta, Dendy; Prakoso, Akbar Teguh; Saputra, M. A. Ade; Astuti, Astuti; Wadirin, Wadirin
Jurnal Lentera Nusantara Vol 2 No 2 (2023): Jurnal Pelita Sriwijaya
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/jps.v2i2.118

Abstract

Pembangkit listrik tenaga surya (PLTS) merupakan solusi daerah yang mengalami krisis energi di Indonesia karena potensi energi surya yang melimpah. Desa Dabuk Rejo merupakan salah satu desa yang sedikit memiliki fasilitas lampu penerangan jalan tidak banyak, karenanya, PLTS merupakan usulan tepat sebagai pembangkit listrik mandiri untuk lampu penerangan jalan di desa Dabuk Rejo karena murah, ramah lingkungan, mudah di operasikan, mudah di rawat, dan mudah dipasang. Pendekatan participatory communication for social change digunakan sebagai metode pelaksanaan kegiatan, dimana pendekatan ini menjadi jembatan transfer pengetahuan dari tim pengabdi ke masyarakat. Sehingga, ketika terjadi kendala kerja di PLTS masyarakat dapat secara mandiri memperbaikinya, agar masyarakat merawat dan menjaga PLTS sehingga memiliki lifetime yang tinggi.
PENYULUHAN PEMBUATAN KOPRA KEPADA IBU-IBU PKK KELURAHAN KARANGJAYA KECAMATAN GANDUS PALEMBANG Pratiwi, Diah Kusuma; Gunawan, Gunawan; Arifin, Amir; Eka Utami, Nurhabibah Paramitha; Prakoso, Akbar Teguh; Saputra, M. A. Ade; Kaprawi, Kaprawi; Chandra, Hendri; Ellyanie, Ellyanie; Sipahutar, Riman
Jurnal Lentera Nusantara Vol 3 No 1 (2024): Jurnal Pelita Sriwijaya: in progress
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/jps.v3i1.135

Abstract

Indonesia adalah salah satu negara penghasil kelapa terbesar di dunia. Kelapa merupakan bahan baku pembuatan minyak yang dipergunakan untuk berbagai keperluan. Kelapa diolah menjadi kopra yang bertujuan untuk mengurangi kandungan uap air dan menambah ringan, dan meningkatkan kandungan minyak didalamnya.Salah satu daerah di Palembang yang banyak terdapat kelapa adalah Kelurahan Karang Jaya Kecamatan Gandus. Penyuluhan cara mengolah kelapa dilakukan kepada ibu-ibu PKK dan penduduk dengan cara ceramah, diskusi, dan pemutaran video-video. Kegiatan ini telah berhasil dengan baik yang ditunjukkan oleh antusiasme peserta penyuluhan untuk belajar mengolah kelapa menjadi kopra dan nilai hasil evaluasi yang cukup signifikan.
Co-Authors Ahmad Malik Abdul Aziz AHMAD WISNU SULAIMAN Amir Arifin Amir Arifin Amir Putra Md Saad Amrifan Saladin Mohruni Aneka Firdaus Anthony Costa Ardiyansyah Syahrom Astuti - Astuti Astuti Barlin Oemar Dendy Adanta Dewi Puspita Sari Dewi Puspitasari Dewi Rawani Diah Kusuma Pratiwi Dicky Pratama Putra Eka Utami, Nurhabibah Paramitha Ellyanie Ellyanie ELLYANIE ELLYANIE FATHURRAHMAN SULAIMAN Gunawan Gunawan Gunawan Gunawan GUSTINI GUSTINI Gustini, Gustini Hasan Basri Hasan Basri HASAN BASRI Hasan Basri Hendri Chandra Hendri Chandra Hendri Chandra Imam Akbar Imam Akbar Irsyadi Yani Ismail Thamrin Kaprawi Kaprawi M. A. Ade Saputra M. A. Ade Saputra M. Alif Abiyyu M.A. ADE SAPUTRA Martin Luther King MARWANI MARWANI Marwani Marwani, Marwani MUHAMMAD YANIS Muhammad Yanis Muhammad Zahir Nanda Yusril Mahendra Nanda Yusril Mahendra Nova Yuliasari Riman Sipahutar Risky Utama Putra Rudi Hermawan Saputra, M. A. Ade Steven Davin Sukarmansyah syofii, imam Togar PO Sianipar Tolu Tamalika Utami, Nurhabibah Paramitha Eka Wadirin, Wadirin Yadi, Farhan Yules Pramona Zulkarnain Yulia Resti ZAINAL ABIDIN Zulkarnain Ali Leman Zulkarnain Fatoni ZULKARNAIN ZULKARNAIN