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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
Arnoldi, Dwi
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Aerospace Engineering 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 Materials Science & Nanotechnology Mechanical Engineering 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.
Co-Authors Adelia Putri, Safira Adian Aristia Anas Dodi Tafrant Effendi, Sairul Fatahul Arifin, Fatahul Friatinia, Della Dwi Hendradinata, Hendradinata Jaya, Rangga Danar Mochammad Yunus, Mochammad Prakarsa, Cakra Puitra Putri, Fenoria Ramadhan, Surya Sampurno, Rachmat Dwi Shangra, Kevin Dwiva Syamsul Rizal