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All Journal Majalah Ilmiah MOMENTUM JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Jurnal Rekayasa Material, Manufaktur & Energi APTEK JTTM: Jurnal Terapan Teknik Mesin Jurnal UNITEK Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) SAINSTEK
Weriono
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Pengaruh Arus Las Smaw Kampuh V Metode 1gplat Datar Alur Segitigaterhadap Kekuatan Las Pada Material AISI 1016 Isra, Adi; N, Nazarudin; W, Weriono
Rekayasa Material, Manufaktur dan Energi Vol 5, No 1: Maret 2022
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v5i1.10257

Abstract

The nature of electrode with the base metal is as important as the welding speed and design of joint. One of the metal joining systems is the SMAW (shielded Metal Arc Welding) welding system with wrapped electrodes. Generally, for welding high strength steels a higher heat input is used in the SMAW process compared to other processes. The influence of heat input and welding speed affects the characteristics of the material, microstructural properties and mechanical properties of the weld. The type of electrode used is current according to the material to be welded, in this case the author uses AWS E-7016 welding wire with D32 mm and AISI 1016 material with a thickness of 12 mm using V connection. The welding process occurs because of the resistance of an electric current flowing between the electrode and the welding material which causes heat to reach 30000C, thus making the electrode and the material to be welded melt. Welding currents of 100 A and 120 A have tensile strength, ultimate strength and elongation above 20% which is the result of the same good strength as the parent metal.The purpose of this study was to obtain the tensile strength and bending strength of the welded joint with V seam welding and to compare the results of the tensile strength and bending strength with the effect of high current variations on the electrode during welding.The results of the buckling test for a current of 80 a showed a fracture in the WM/HAZ, fracture occurred in the welding area, while for a current of 100 A, fine cracks were obtained in the WM/HAZ in the weld area and a current of 120 A obtained a Void: 0.8 with better welding results.
Pengaruh Fraksi Volume Dan Sudut Konfigurasi Serat Phyllostachys Terhadap Kekuatan Komposit Dengan Metode Hand Lay-Up ., Weriono; Junaidi, Abdulkhair; ., Rinaldi; Isra, Adi; Kurniawan, Mauliade
Rekayasa Material, Manufaktur dan Energi Vol 5, No 2: September 2022
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v5i2.11171

Abstract

Plyllostachys bamboosoides known in Asia, also called bamboo fence, is one of the choices for the construction and manufacture of furniture. Its properties also make it useful in a number of arts and crafts. The influence of ductility and toughness factors is at the microcellular level; which includes the pattern of arrangement, morphology, and mechanical properties of bamboo cells. The perfect combination of fibers and compressible parenchyma cells is the key to the excellent flexible deformation of bamboo, originally illustrated the elongation of parenchyma cells under bending through low resolution electron micrographs. The angle of the microfibrils in the cell wall plays an important role in the mechanical properties of the wood and the occurrence of interface delamination followed by matrix failure and fiber breakdown under natural growth. Tensile strength and strain due to the influence of variations in thickness and volume of composite composition with variations in manufacturing methods that can affect its mechanical properties so that it is expected to determine a good composition. The addition of bamboo fiber as a filler of Polyester resin has a significant effect on the tensile strength. Tensile testing with an angle of 450 with a thickness 1 mm resulted in the highest ultimate stress 0.027 M.Pa with 25%:75% polyester resin of bamboo fiber. The tensile strength is increased by increasing the volume of the bamboo fiber and reducing the thickness of the bamboo fiber increases the tensile strength of the composite.
Sifat Mekanik Komposit Hybrid Serat Tebu Bermatrik E-Glass Epoxy Dengan Metode Hand Lay-Up Isra, Adi; Weriono, Weriono; Mirfaturiqa, Mirfaturiqa; Hypocrates Sihite, Hendra
SAINSTEK Vol. 12 No. 1 (2024)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/js.v12i1.241

Abstract

Penelitian ini mengeksplorasi penggunaan komposit sebagai material yang ramah lingkungan dengan memanfaatkan serat ampas tebu sebagai bahan penguat. Serat ampas tebu yang berasal dari pabrik-pabrik pengolahan gula tebu di Indonesia dipilih karena ketersediaannya yang mudah, sifat tidak berbahaya bagi kesehatan, harganya yang terjangkau, dan kemampuannya untuk terdegradasi secara alami. Proses perlakuan serat melibatkan rendaman dalam larutan alkali (NaOH) selama 2 jam, diikuti dengan metode pencetakan komposit menggunakan hand lay up dan matriks resin epoxy. Eksperimen mencakup fraksi volume komposit antara serat ampas tebu, resin epoxy (75%:25%, 65%:35%, dan 55%:45%) dengan variasi sudut 45° dan 90° , dengan uji sifat mekanik sesuai standar ASTM, yaitu Uji Tarik. Hasil uji menunjukkan bahwa komposit dengan fraksi volume 45%:55% sudut 90o serat Tebu memiliki kekuatan tarik yang paling besar diantara fraksi yang lain.
Model Matematik Eksperimental dan Validsi Momentum Takhingga Proses Kominusi dan Fragmentasi Batubara Nasution, Lukman Hakim; Weriono, Weriono; Rinaldi, Rinaldi; Julnaidi, Julnaidi; Syafar, Syafril; Harnis, Emri Juli; Irawansyah, Purnama; Hadi, Sopyan; Akmal, Nasrol; Husnadi, Andi; Haryon, Tri
SAINSTEK Vol. 12 No. 1 (2024)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/js.v12i1.242

Abstract

Kominusi secara physical collision melalui prinsip linier mometum dilakukan pada sampel batubara dengan panjang 10mm, lebar dan tebal masing-masing 1mm. Jarak proses momentum adalah 100cm, tekanan udara 0.1bar hingga 3bar, dan dinding landasan berdiameter 65mm. Perubahan ukuran sampel terjadi setelah momentum, dan selanjutnya dianalisis secara matematik dengan metode penskalaan per millimeter, berfaktorkan volume dan massa material; dimana dilakukan pada kondisi sebelum dan sesudah momentum. Hasil analisis membuktikan bahwa ukuran pecahan semakin besar jika semakin jauh dari titik pusat momentum dan sebaliknya. Namun jumlah momentum akhir dan distribusi pecahan sampel tidak terdefenisikan secara matematik . Melalui metode penskalaan per millimeter yang dilakukan sebelum dan sesudah momentum berfaktorkan volume, massa dan ukuran akhir pecahan material, adalah alternatif untuk memprediksi kebutuhan energi, dan ukuran pecahan akhir yang ingin dicapai.
Water flow simulation in a pelton turbine bucket with variable bucket dimensions using computational fluid dynamic Muhammad Idris; Weriono Weriono; M Dalil; Indra Hermawan; Joko Joko; Achmad Jusuf Zulfikar; M.Y. Yuhazri
JTTM : Jurnal Terapan Teknik Mesin Vol 4 No 2 (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.v4i2.633

Abstract

Today, especially among industrialized and developing nations, the usage of renewable energy sources is growing in popularity as a means of supplying energy needs. One of the renewable energy sources that is now being heavily exploited in Indonesia is the potential of water that may be used as a source of electrical energy by establishing a hydroelectric power plant (PLTA). One of the turbines that is frequently used in hydropower plants as a part that may transform water's kinetic energy into mechanical energy is the Pelton turbine. There is not a lot of literature on the design of Pelton turbine buckets. In order to determine the most ideal bucket dimensions that can be used with Pelton turbines, this study presents the conceptual and experimental components of the design and analysis of Pelton turbines based on bucket variations. AutoCAD was used to model the bucket and Pelton turbine, and ANSYS Fluent was used to perform the simulation so that results could be analyzed later. By comparing the simulated data of the blade variants 1 and 2, the ideal blade dimension variation is identified by the blade simulation of variant 1. The blade variation 2 with average torque of 5.859 Nm, average angular velocity of 40.822 rad/s, and average power of 242,970 watts is the most ideal blade. With an average torque of 4,735 Nm, an average corner speed of 40,404 rad/s, and an average power of 196,794 W, the blade 3 model has lower values
Effect of Venting Equipment Installation on Oil Production Stability Weriono Weriono; Abdul Khair Junaidi; Kabul Indarto
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.v68i3.377

Abstract

Electric Submersible Pumps (ESPs) are one of the most prominent artificial lifting methods in the oil and gas industry today. In the operation of Electric Submersible Pumps on wells in the Ko-Pet field, a gas lock may occur when liquid and gas separate in the tubing above an electric submersible pump and inside the pump. This study aims to determine the effect of installing venting equipment on oil well production. Venting equipment was installed in three oil wells: KI090, KI183, and KI495 in the Ko-Pet oil field. From the production data, it was found that the installation of Venting Equipment affected production stability, namely by increasing the fluid that could be pumped by the ESP to the surface facility. The installation of venting equipment increased oil production by 1251 barrels or an increase of 8%. Electrical Submersible Pump performance was more stable because the gas lock problem can be overcome by continuously releasing the casing pressure with venting equipment.
Analisa Sifat Mekanik Proses Pack Carburizing AISI 4340 dengan Temperatur Kristalisasi 725°C Menggunakan Karbon Tandan Kelapa Pratiwi, Sheliona; Khair Junaidi, Abdul; Weriono, Weriono; Ahmad Rambe, Ibrahim
JURNAL ILMIAH MOMENTUM Vol 20, No 2 (2024): Vol 20, No 2
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v20i2.12573

Abstract

Penelitian ini menganalisis sifat mekanik baja AISI 4340 setelah proses pack carburizing  menggunakan karbon dari tandan kelapa pada temperatur kristalisasi 725°C. Metode carburizing yang digunakan dengan menggunakan pack yang terbuat dari stainless steel yang ditutup rapat. Pada pack terdapat karbon tandan kelapa, spesimen uji dan katalis abu kerang sebanyak 10% sebagai katalis. Tujuan utama adalah mengetahui perubahan kekerasan permukaan, kekuatan impact, kekuatan tarik dan struktur mikro setelah karburisasi, serta pengaruh serbuk tandan kelapa sebagai media karbon. Hasil penelitian menunjukkan bahwa sebelum carburizing, baja AISI 4340 memiliki kekerasan permukaan 78.9 HRC, kekuatan impact 129.56 Joule, kekuatan tarik 948.8 Mpa dan struktur mikro terdiri dari perlite dan ferrite. Setelah karburizing dengan media karbon tandan kelapa dan katalis abu cangkang kerang 10%, kekerasan permukaan meningkat menjadi 94.5 HRC, kekuatan impact menjadi 175.2 Joule, kekuatan tarik menjadi 1,012.9 Mpa, patahan tetap berbentuk cup and cone menunjukkan sifat mekanik ulet dan struktur mikro terbentuk perlite, ferrite serta banit. Kesimpulannya, penggunaan serbuk karbon tandan kelapa dalam proses pack carburizing  meningkatkan sifat mekanik baja AISI 4340.
Komposit Hybrid Serat Tebu Bermatrik E-Glass Epoxy: Adi Isra, Weriono, Mirfaturiqa Isra, Adi; Weriono, Weriono; Mirfaturiqa, Mirfaturiqa
SAINSTEK Vol. 12 No. 2 (2024)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

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

Abstract

Penelitian ini mengeksplorasi penggunaan komposit sebagai material yang ramah lingkungan dengan memanfaatkan serat ampas tebu sebagai bahan penguat. Serat ampas tebu yang berasal dari pabrik-pabrik pengolahan gula tebu di Indonesia dipilih karena ketersediaannya yang mudah, sifat tidak berbahaya bagi kesehatan, harganya yang terjangkau, dan kemampuannya untuk terdegradasi secara alami. Proses perlakuan serat melibatkan rendaman dalam larutan alkali (NaOH) selama 2 jam, diikuti dengan metode pencetakan komposit menggunakan hand lay up dan matriks resin epoxy. Eksperimen mencakup fraksi volume komposit antara serat ampas tebu, resin epoxy (75%:25%, 65%:35%, dan 55%:45%) dengan variasi sudut 45° dan 90° , dengan uji sifat mekanik sesuai standar ASTM, yaitu Uji ketangguhan impak. Hasil uji menunjukkan bahwa komposit dengan fraksi volume Resin 25%:75% Serat tebu pada sudut 90° ketebalan 1 mm memiliki ketangguhan impak yang paling besar diantara fraksi yang lain.
Efek Ukuran Terhadap Sifat Mekanik Komposit Diperkuat Serat Sabut Kelapa Weriono, Weriono; Isra, Adi
SAINSTEK Vol. 12 No. 2 (2024)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/js.v12i2.270

Abstract

Pengaruh ukuran terhadap kekuatan komposit laminasi yang diperkuat serat buatan telah dibahas secara luas selama perancangan struktur komposit. Dengan uji coba sebagai struktur dalam kedirgantaraan, teknik sipil, industri otomotif, penskalaan sifat komposit yang diperkuat serat tanaman harus dipelajari. Dalam makalah ini, pengaruh ukuran dan mekanisme kegagalan sifat tarik dan impak komposit yang diperkuat serat sabut kelapa dinilai. Pengaruh area, ketebalan, dan volume yang berbeda terhadap sifat tarik komposit dieksplorasi. Selain itu, mekanisme kegagalan pengaruh ukuran pada spesimen tarik diusulkan melalui morfologi kerusakan komposit. Ditemukan bahwa puntiran bundel serat memainkan peran penting dalam pengaruh ukuran ketebalan komposit. Selain itu, hubungan antara sifat impak dan pengaruh ukuran komposit dilakukan, termasuk ukuran palu, energi impak yang berbeda, dan ukuran sampel. Kurva berbagai jenis sampel impak dinormalisasi untuk memverifikasi aturan linier dalam tahap respons. Hasilnya diharapkan dapat memberikan dasar teoritis untuk desain struktural komposit yang diperkuat serat serabut kelapa.
Structural of Pedicle Screw on Biomechanical Characteristics of Spinal Scoliosis Correction Deformation Weriono, Weriono; Rusli, Meifal; Dahlan, Hendery; Sahputra, Roni Eka
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 69 No 1 (2025): 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.v69i1.529

Abstract

Scoliosis correction methods often involve orthopedic procedures such as implant placement to stabilize movement and correct spinal deformity. The choice of surgical method is highly dependent on the location and nature of the fracture. Fractures with significant damage require a different approach compared to cases of minor injuries. Three dimensional finite element model of C1–L6 spine was used to simulate conditions with single cylindrical implant fixation under a vertical downward loading force 50 N and cylindrical screw types made of titanium alloy. The human spine, encompassing the cervical, thoracic, and lumbar regions, exhibits a complex biomechanical response when subjected to physiological loads. Displacement that occurs due to axial force can be the result of pedicle screw movement with vertebrae of the spine. Installation of 4 (four) rows of pedicle screws reduces the release of pedicle screws from the spine. The use of more fixation can reduce the stress distribution on the vertebrae of the spine.
Co-Authors Abdul Khair Junaidi Achmad Jusuf Zulfikar Adi Isra Adi Isra . Aditya Sapta Nugraha Ahmad Marabdi Siregar Ahmad Rambe, Ibrahim Ajar Darmawan Akmal, Nasrol AMRU SIREGAR Bambang Prahoro Aji Candra Irianto Chandra Aditiya Darianto Darianto Darianto, Darianto Deden MS Din Aswan Ritonga Fadhli Palaha Felix Sigalingging Firdaus M Hakim Nasution, Lukman Hariman Hariman Harnis, Emri Juli Haryon, Tri Hendery Dahlan, Hendery Hendri Hendri Holyness Nurdin Singadimedja Husnadi, Andi Hypocrates Sihite, Hendra Indra Hermawan Indra Hermawan Irawansyah, Purnama IRWANSYAH Isra, Adi Joko Joko Julnaidi, Julnaidi Junaidi JUNAIDI Kabul Indarto Karo Karo, Septa Fernando Kurniawan, Mauliade M. Dalil M.Y. Yuhazri Meifal Rusli, Meifal Mirfaturiqa Mirfaturiqa, Mirfaturiqa Muhammad Idris Muhammad Idris Muhammad Idris N, Nazarudin Nasution, Lukman Hakim Nazaruddin Nazaruddin Nazaruddin Nazaruddin, Nazaruddin Pertiwi, Eka Pratiwi, Sheliona Rinaldi Rinaldi . Rinaldi Rinaldi Rinaldi, Rinaldi Sahputra, Roni Eka Sepfitrah, Sepfitrah Siswo Pranoto Sopyan Hadi Suripto, Heri Syafril Syafar Syafril Syafar TO Rajagukguk Yudi Aditya