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All Journal AUSTENIT Machine : Jurnal Teknik Mesin JURNAL CRANKSHAFT International Journal of Research in Vocational Studies (IJRVOCAS) MACHINERY: Jurnal Teknologi Terapan Innovative: Journal Of Social Science Research International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS)
Arnoldi, Dwi
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Aerospace Engineering 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 Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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PEMBUATAN DAN PENGUJIAN SIFAT MEKANIK KOMPOSIT BAHAN SERAT FIBERGLASS DAN SERAT DAUN NANAS DENGAN MATRIK RESIN POLYESTER PADA PANEL PANJAT DINDING Yunus, Moch; Arnoldi, Dwi; Prakarsa, Cakra Puitra
AUSTENIT Vol. 12 No. 1 (2020): AUSTENIT 12012020
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (521.003 KB) | DOI: 10.5281/zenodo.4547826

Abstract

Serat daun nanas merupakan salah satu komponen yang sering dibuang pada tanaman nanas.Tanaman nanas yang berbahasa latin ananas comosus pada umumnya termasuk jenis tanaman semusim dan memiliki daun yang panjang dan mirip dengan tanaman lidah buaya. Daun nanas ini memiliki banyak manfaat, salah satunya serat pada daun nanas yang dapat digunakan sebagai bahan penguat pada pembuatan material komposit. Tujuan dari penelitian ini untuk menganalisis pengaruh dari varisi berat serat daun nanas dengan serat fiber yang di aplikasikan ke panel panjat dinding. Metode yang digunakan adalah metode uji  tarik dan uji bending dengan variasi serat daun nanas (100 gram, 5 gram, 3 gram) dan variasi serat fiber (5 gram, 7 gram). Hasil penelitian ini menunjukkan bahwa spesimen 3 gram serat daun nanas + 7 gram serat fiber memiliki nilai rata-rata tegangan tarik sebesar 10,601 N/mm2 dan tegangan bending sebesar 13,534 N/mm2. Penelitian ini tidak dapat dijadikan referensi untuk pembuatan panel panjat dinding, tapi dapat dilihat nilai kekuatan perpaduan antara serat fiber dan serat daun nanas. Hasil penelitian ini menyatakan bahwa hasil pada komposit tidak dapat dijadikan untuk pembuatan panel panjat dinding, karena nilai kekuatan perpaduan antara serat fiber dan serat daun nanas terlalu rendah dari standar BSAPI yaitu t uji = 10,601 N/mm2   t standar = 22,555 N/mm2, dan b uji = 40,601 N/mm2   b standar = 112,776 N/mm2.
Design and Stress Analysis of the Prototype Bapro-1 Car Chase Effendi, Sairul; Friatinia, Della Dwi; Arnoldi, Dwi; Jaya, Rangga Danar
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 2 (2023): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i2.206

Abstract

BAPRO-1 is a type of prototype vehicle made by the SMES (Sriwijaya Mechanical Engineering Squad) team. This car was made to be contested in the KMHE (Energy Saving Car Contest) event which has the aim of creating more effective motorized vehicles, both in terms of vehicle design, quality of components and so on which can improve fuel efficiency in these vehicles. This article shows the stress analysis of the BAPRO-1 vehicle chassis using the Autodesk Inventor application. The chassis tested uses aluminum 6061 and stainless-steel. The test is carried out with the assumption of a static load, namely when the car is stationary. The purpose of writing this article is to determine the value of safety, deflection, and the Von Misses number. This study uses the Autodesk Inventor software to create 3D images.
Analisis Kegagalan Pipa Elbow Superheater 90° Terhadap Perlakuan Bending Menggunakan Hydraulic Pipa Bender Sampurno, Rachmat Dwi; Tafrant, Dodi; Putri, Fenoria; Hendradinata, Hendradinata; Arnoldi, Dwi; Ramadhan, Surya
JURNAL CRANKSHAFT Vol 8, No 2 (2025): Jurnal Crankshaft Vol. 8 No. 2 (2025)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v8i2.15058

Abstract

Steam power plants are the most widely used power plants. The steam produced will be channeled using a superheater pipe. The component that often fails is the superheater elbow pipe. The method used is purposive sampling. The test method used is metallographic testing where the test is based on ASTM. For the results of reading the microstructure content, the percentage of the microstructure phase of the sample tested was factory factory elbow superheater pipe with a percentage of 53.50% pearlite and 27.50% ferrite, the flexible superheater elbow pipe sample contained 43.00% pearlite and 36% ferrite. . 00%, the leaking superheater elbow pipe sample contained 37.50% pearlite and 43.00% ferrite. So the conclusion is that the superheater elbow pipe which has high hardness and good pearlite and ferrite content is found in the factory ebow superheater pipe sample, the manual bending elbow superheater pipe experienced a reduction in the pearlite phase and the addition of a ferrite phase, so it can be concluded that this sample experienced a reduction in resistance and hardness, The Leaking superheater elbow pipe sample has high hardness due to the heat treatment process and a martensite phase appears due to heating, while the percentage of pearlite decreases and ferrite increases, and if there is more ferrite in the material, the pressure in the pipe will be decreased.Steam power plants are the most widely used power plants. The steam produced will be channeled using a superheater pipe. The component that often fails is the superheater elbow pipe. The method used is purposive sampling. The test method used is metallographic testing where the test is based on ASTM. For the results of reading the microstructure content, the percentage of the microstructure phase of the sample tested was factory factory elbow superheater pipe with a percentage of 53.50% pearlite and 27.50% ferrite, the flexible superheater elbow pipe sample contained 43.00% pearlite and 36% ferrite. . 00%, the leaking superheater elbow pipe sample contained 37.50% pearlite and 43.00% ferrite. So the conclusion is that the superheater elbow pipe which has high hardness and good pearlite and ferrite content is found in the factory ebow superheater pipe sample, the manual bending elbow superheater pipe experienced a reduction in the pearlite phase and the addition of a ferrite phase, so it can be concluded that this sample experienced a reduction in resistance and hardness, The Leaking superheater elbow pipe sample has high hardness due to the heat treatment process and a martensite phase appears due to heating, while the percentage of pearlite decreases and ferrite increases, and if there is more ferrite in the material, the pressure in the pipe will be decreased.
ANALISIS PENGARUH SUDUT PUNCH TERHADAP PROSES V BENDING 90 DERAJAT Shangra, Kevin Dwiva; Arifin, Fatahul; Arnoldi, Dwi
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 2 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.17293847

Abstract

Springback in plate bending makes the bending angle results incompatible with the punch used due to the nature of steel material elasticity. This research aims to find an angle that is close to a 90-degree angle on ST 37 low carbon steel material using 6 punch pieces that vary with 3 different angles and 2 radii and 1 die. This bending test is carried out with the V bending process and uses a manual hydraulic press with a capacity of 2 tons as a press to perform the bending process. The test results on the material will be seen from the springback results and also the punch with what angle can produce an angle close to 90 degrees. The results of the punch angle of 90 radius 1 of 5 times testing the average value is 92.93 with a springback of 2.93 and the value that is very close to 90 degrees is at an angle of 87.80 radius 1 with a result of 89.95 degrees and to get the maximum angle results can use the springback formula after testing and from the springback results of the 92.93 angle results, it can be calculated and the result of the punch angle that must be used is 87.6 degrees. The result of v bending is quite close to the 90 degree angle of 89.80 degrees
PENERAPAN INTERNET OF THINGS APLIKASI BLYNK PADA ALAT BANTU PRAKTIKUM FISIKA HUKUM HOOKE Adelia Putri, Safira; Arnoldi, Dwi; Aristia Anas, Adian; Rizal, Syamsul
Machine : Jurnal Teknik Mesin Vol 11 No 2 (2025): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/4c02wm35

Abstract

Penelitian ini bertujuan untuk merancang dan mengembangkan alat bantu praktikum Fisika Hukum Hooke yang terintegrasi dengan teknologi Internet of Things (IoT) menggunakan platform Blynk. Alat ini dirancang untuk mengatasi permasalahan dalam kegiatan praktikum konvensional, seperti ketidakakuratan pengukuran manual, keterbatasan alat, dan kurangnya efisiensi dalam pemantauan data secara real time. Pengujian dilakukan dengan menggunakan tiga variasi massa 0,2 kg, 0,25 kg, dan 0,3 kg serta tiga diameter pegas 1 cm, 1,5 cm, dan 2 cm. Data diperoleh melalui dua metode, yaitu pengukuran manual dan pengukuran otomatis berbasis IoT. Hasil menunjukkan bahwa alat bantu praktikum berbasis IoT mampu menampilkan data secara akurat dan real time, serta memiliki tingkat ketelitian yang tinggi dengan rata-rata ketelitian mencapai di atas 95%. Analisis statistik dengan ANOVA menunjukkan bahwa variabel massa dan diameter pegas berpengaruh signifikan terhadap nilai konstanta pegas (p < 0,05). Dengan demikian, alat bantu praktikum berbasis IoT ini dinilai efektif dalam meningkatkan efisiensi, akurasi, dan kemudahan pemantauan praktikum Hukum Hooke, serta memberikan alternatif pembelajaran fisika yang interaktif bagi mahasiswa.
PENGARUH PARAMETER PEMBUATAN OBJEK DARI BAHAN TIMAH(SN) METODE GRAVITY CASTING DENGAN CETAKAN SILICONE TERHADAP NILAI KEKERASAN RUANTO, YOGI; SEPRIANTO, DICKY; ARNOLDI, DWI
MACHINERY Jurnal Teknologi Terapan Vol. 1 No. 1 (2020): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (208.858 KB) | DOI: 10.5281/zenodo.4540888

Abstract

Pada pengerajin timah pada umumnya masih menggunakan cara yang kurang efektif dalam proses pengecoran yaitu penggunaan jenis model yang terbuat dari logam yang menyulitkan dalam pembentukan variasi model, dan juga para pengrajin pun dalam pembuatan cetakan masih mengunakan cetakan pasir,logam,. Untuk menciptakan produk yang berkualitas dengan pengecoran menggunakan metode grafity casting maka dalam hal ini model akan dicetak menggunakan alat DLP 3D printer dengan bahan resin. Sehingga dapat menciptakan variasi model yang lebih detail lalu cetakan menggunakan silikon untuk membuat cetakan sehingga menciptakan cetakan yang mudah dibentuk terhadap variasi model yang detail. Faktor-faktor yang diselidiki adalah tekanan vakum cetakan dan media pendingin dengan respon kekerasan  dari spesimen uji. Pada proses pengujian menggunakan alat uji kekerasan ALBERT GNHEM HORGEN dan Profil Proyektor PJ-A3000 Mitutoyo. Data hasil tes dianalisis menggunakan metode ANOVA dengan desain level faktorial tipe 2, desain 2 interaksi faktorial (2FI), dan replikasi 3 dimodelkan oleh perangkat lunak Design-Expert (Trial).
ANALISIS KETANGGUHAN MATERIAL ALTERNATIF KOMPOSIT SERAT IJUK DAN RESIN POLYESTER SEBAGAI COVER BODY MOTOR Ramadhan, Desril Aslam; Putri, Fenoria; Arnoldi, Dwi
MACHINERY Jurnal Teknologi Terapan Vol. 2 No. 2 (2021): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (310.582 KB) | DOI: 10.5281/zenodo.5812356

Abstract

Perkembangan bisnis motor yang pesat, akan mendesak peningkatan industri pernak-pernik kendaraan bermesin sebagai sekutu bisnisnya. Dengan demikian, inovasi diharapkan dapat memanfaatkan serat normal/alam sebagai bahan dasar pembuatan papan hias industri motor untuk menggantikan serat buatan/sintesis, misalnya ijuk yang sangat melimpah. Tujuan di balik penelitian ini adalah untuk mengetahui pengaruh varietas panjang serat dengan resin poliester. Strategi yang digunakan adalah uji pengaruh dengan variasi panjang serat 20 mm, 40 mm, 60 mm dengan bagian volume 50% serat dan 50% poliester. Hasil kekuatan impact komposit bertambah dengan memperluas panjang serat, berdasarkan hasil ANOVA, diketahui bahwa dengan panjang serat 60 mm memiliki rata-rata paling besar senilai 0,03493 joule/mm2.
ANALISA PENGARUH TEMPERATURE DAN SUDUT SCREW TERHADAP WAKTU EKSTRUSI PADA MESIN EKSTRUSI SINGLE SCREW DARI BAHAN RECYCLE HIGH DENSITY POLYETHYLENE (HDPE) Hamidi, Ahmad Faresy; Putri, Fenoria; Arnoldi, Dwi
MACHINERY Jurnal Teknologi Terapan Vol. 3 No. 2 (2022): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.6857516

Abstract

This research goal is to determine the effect of temperature and screw angle to extrusion speed with High Density Polyethylene as Material on Single Screw Extrusion Machine. On this research use 2 factor, first Temperature with 160°C, 170°C, and 180°C. and the second one is Screw Angle with 0°, 15°, 25°. The roller and puller are setted up to 16 Rpm, data from the research analyze with ANOVA method. And results from the data researcher got the fastest on Screw Angle 25° with 170°C Temperature. And the slowest on Screw Angle 0° with 160°C Temperature. The conclusion that researcher got is Temperature doesn’t effect on extrusion speed because it doesn’t significant, Whereas the Screw Angle have an effect on extrusion speed.   Keywords : Extrusion Machine, Temperature, Screw Angle, ANOVA, Speed.
Rancang Bangun Cetakan Seal Apar Diameter 32.60 MM Hanif Akbar, Ikhlasul; Arifin, Fatahul; Arnoldi, Dwi
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 1 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.7684065

Abstract

This study aims to make a rubber-based fire seal with a diameter of 32.60 mm using a Compression Molding tool. Compression Molding itself is a set of printing tools by heating and pressing. The scheme of the basic processes consists of heating a charge (thermostat and reinforcement) to a certain temperature, in the mold cavity and then pressing it with a certain pressure.The first process begins with tool preparation and mold making, then rubber is made into a 32.60mm diameter fire seal. After everything has been prepared, then cut the rubber into small pieces to meet the volume of the seal in the mold and put the rubber into the mold. Press the mold using a  re using the thermostat. After completion, the measurement of seal shrinkage includes the inside diameter, outside diameter, and seal thickness and then compared with the mold size, so that conclusions can be drawn. The calculation is influenced by the density of the structure after the testing process.
RANCANG BANGUN ALAT CETAK SEAL APAR CHUBB 6 KG POWDER (Ø32.60 MM & Ø11.40 MM) MENGGUNAKAN SISTEM HIDROLIK (PENGUJIAN PERFORMA) Muhammad, Novriadi; Arnoldi, Dwi; Arifin, Fatahul
MACHINERY Jurnal Teknologi Terapan Vol. 3 No. 3 (2022): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.7246873

Abstract

In today's modern industry, there are many manufacturing machines of various types and different functions. A manufacturing machine is a tool that serves to facilitate the manufacture of components of an object. This study has a goal, namely to create an innovation in the world of mechanical engineering, especially in the field of compression molding with a hydraulic system using a bottle jack as the suppression system.The design of this seal press molding tool was designed and made by researchers in such a way with the aim that the tool can work optimally without failure. Testing on this tool is in the form of testing the performance of the jack with a pressure gauge installed and the production process which aims to determine the limits of the jack's ability in the production process in the hope of producing a perfect and precise o-ring seal.
Co-Authors Adelia Putri, Safira Adian Aristia Anas Ahmad Junaidi Ali Medi Azharuddin Dodi Tafrant Dwiyanto, M Ikbar Effendi, Sairul Fatahul Arifin, Fatahul Friatinia, Della Dwi Hamidi, Ahmad Faresy Hanif Akbar, Ikhlasul Hendradinata, Hendradinata HIDAYATI, BAITI Jaya, Rangga Danar Martomi, Eka Satria Mila, Andika Nopriansyah Mochammad Yunus, Mochammad Muhammad Arif Fadilah Muhammad, Novriadi Mulyadi Mulyadi Prakarsa, Cakra Puitra Putri, Fenoria Radjiq, Akhmad Ramadhan, Desril Aslam Ramadhan, Surya Rasid, Muhammad RUANTO, YOGI Sailon, Sailon Sampurno, Rachmat Dwi Seprianto, Dicky Shangra, Kevin Dwiva Soegeng Witjahjo Syamsul Rizal Yahya Yasvita, Septania Dwi Yusuf Dewantoro Herlambang Zamheri, Ahmad