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All Journal International Journal of Advances in Applied Sciences Jurnal Energi Dan Manufaktur Jurnal Simetris Jurnal Teknik Mesin Jurnal Teknik Mesin SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Rekayasa Mesin Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan FLYWHEEL : Jurnal Teknik Mesin Untirta Jurnal Mechanical Jurnal Ilmiah Teknik Mesin Jurnal Media Gizi Indonesia (MGI) Turbo : Jurnal Program Studi Teknik Mesin Wikrama Parahita : Jurnal Pengabdian Masyarakat Jurnal Elementer (Elektro dan Mesin Terapan) Jurnal Pengabdian Pada Masyarakat JTM-ITI (Jurnal Teknik Mesin ITI) Machine : Jurnal Teknik Mesin Prosiding Seminar Nasional Darmajaya Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) INSIST (International Series on Interdisciplinary Research) JURNAL KAJIAN TEKNIK MESIN Manutech : Jurnal Teknologi Manufaktur Jurnal Teknik Mesin Indonesia Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Jurnal Pengabdian Kepada Masyarakat Ungu ( Abdi Ke Ungu) Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Jurnal Mesin Nusantara Journal of Innovation and Technology Indonesian Journal of Engineering and Science (IJES) Jurnal Pengabdian Teknologi Tepat Guna ARMATUR : Artikel Teknik Mesin dan Manufaktur Jurnal Teknik Mesin Jurnal Puruhita Prosiding Seminar Nasional Hasil Penelitian Sains, Teknik dan Aplikasi Industri Fakultas Teknik Universitas Lampung AME (Aplikasi Mekanika dan Energi) : Jurnal Ilmiah Teknik Mesin Jurnal Polimesin Jurnal Teknologi dan Inovasi Industri Prosiding SNTTM Dharmakayana: Journal of scientists, engineers, educators and scientific activists related to society development Nemui Nyimah
Gusri Akhyar Ibrahim
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Lampung, Indonesia
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PEMBUATAN BIOPELET DENGAN MESIN EXTRUDER BERBAHAN BAKU LIMBAH PENYULINGAN BUAH PALA Ibrahim, Gusri Akhyar
JURNAL MECHANICAL Vol 15 No 2 (2024): JURNAL MECHANICAL
Publisher : Fakultas Teknik, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/mech.v15i2.4815

Abstract

Fossil energy is running low, causing an increase in the selling price of fossil fuels. This causes the global community to become aware and consider using renewable fuels which are more environmentally friendly. Utilizing nutmeg refining waste into biopellets can be a solution for managing waste and producing alternative fuel. This research focuses on utilizing nutmeg refining waste into biopellets with a mixture of 0%, 3% and 5% tapioca flour using an extruder machine with engine rotation speeds of 1700 RPM and 2800 RPM. The aim of this research is to determine the composition of the adhesive mixture and the engine rotation speed to obtain optimal heating value. The materials in this research were solid waste from nutmeg distillation and tapioca as adhesive. Making biopellets uses 2 treatments, namely 3 variations of adhesive mixture (0 gram, 90 grams, 150 grams) and 2 variations of machine rotation speed (1700 RPM and 2800 RPM). Meanwhile, the tools used are a pellet printing machine, tachometer, digital balance and caloribomb. The results obtained from testing the calorific value in this study were sample A 5,094.27 cal/g, Sample B 5,603.14 cal/g, Sample C 5,346.24 cal/g, Sample D 5,604.85, Sample E 5,789.10 cal/g, Sample F 5,571.65. So it can be concluded that the addition of adhesive and the engine rotation speed on the extruder machine affect the heating value obtained. Keywords: Biopellets, Extruder Machine, Nutmeg Refining Waste, Calorific Value
Optimasi Mesin Pengayak Rotary Dalam Pemisahan Glukomanan Menggunakan Metode Full Factorial Hamni, Arinal; Ibrahim, Gusri Akhyar; Yahya, Achmad; Tarkono; Taqwa, Muhammad
Prosiding Seminar Nasional Ilmu Teknik Dan Aplikasi Industri Fakultas Teknik Universitas Lampung Vol. 7 (2024): Prosiding Seminar Nasional Ilmu Teknik dan Aplikasi Industi (SINTA) 2024
Publisher : Fakultas Teknik Universitas Lampung

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Abstract

Tepung porang diperoleh dari proses pengeringan dan pengayakan umbi porang, yang mana memiliki kadar glukomanan yang tinggi. Glukomanan merupakan serat pangan larut air yang mengandung kalori yang rendah dan banyak digunakan sebagai bahan pengental dalam industri pangan. Salah satu proses pengolahan porang menjadi glukomanan diantaranya adalah pengayakan rotary screen, yaitu suatu proses pemisahan bahan berdasarkan ukuran lubang kawat atau mesh yang terdapat pada ayakan yang berputar. Tulisan ini bertujuan untuk menganalisis pengaruh sudut kemiringan dan kecepatan putaran ayakan terhadap kinerja mesin rotary screen dan menentukan kondisi terbaik mesin rotary screen dalam pemisahan glukomanan tepung porang. Mesin pemisah yang digunakan jenis rotary screen dengan dua jenis ukuran mesh. Sudut kemiringan yang digunakan 5°, 10°, dan 15°, kecepatan putaran ayakan divariasikan pada 30 rpm, 40 rpm,dan 50 rpm. Desain penelitian yang dipilih untuk dua faktor dan dua level adalah full factorial, dimana massa input awal tepung porang sebanyak 1 kg. Hasil analisis ANOVA menunjukkan bahwa kedua parameter, baik sudut kemiringan ataupun kecepatan putaran berpengaruh secara signifikan terhadap massa glukomanan dengan nilai P-value sebesar 0,03, sedangkan kecepatan putaran ayakan sebesar 0,017. Berdasarkan hasil respon parameter terbaik diperoleh bahwa variasi sudut kemiringan 5° dan kecepatan putaran ayakan 30 rpm memberikan hasil terbesar dengan rendemen glukomanan sebesar 340 gram.
SENSORY CHARACTERISTICS OF SHEREDDED SPICED FISH FORMULATIONS WITH DIFFERENT PROCESSING TREATMENTS Sartika, Dewi; Akhyar, Gusri; Julita, Sela
AQUASAINS Vol. 12 No. 2 (2024): March 2024
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v12i2.p1474-1483

Abstract

Tilapia (Oreochromis niloticus) is a type of fish cultivated by local people in Lake Ranau, West Lampung Regency, Lampung Province. Fish is easily damaged by chemical and microbiological processes, so proper handling and processing is needed to extend its shelf life. Shredded spiced fish is an innovative diversification of shredded fish product made from tilapia fish ori-ginating from Lake Ranau with added of multi-spices. Multi-spices are known to have high antioxidant content, so they can improve the quality and develop the taste of shredded spiced fish product.  The multi spices seasoning formulation and process stages greatly influence the characteristics of the shredded produced.  This research aims to study the formulation and processing treatment of the sensory characteristics of the best shredded spices fish. Determining the best formulation and processing treatment was determined using the sensory test method, namely a scoring test involving 30 panelists, then the data was processed using Microsoft Excel 2021. The result showed that the shredded spiced fish product with sample code 212 (without stir-frying) produced the best characteristics with a texture parameter value of 3.85; fragrance 4.05; colors 4.85; and tasted 4 with a total score of 16.75. Keywords: Multi spices, organoleptic, process stages, sheredded fish, tilapia.
Optimization of tool wear and surface roughness in ST-37 steel turning process with varying tool angles and machining parameters Burhanuddin, Yanuar; Harun, Suryadiwansa; Ibrahim, Gusri Akhyar; Hamni, Arinal
Jurnal Polimesin Vol 22, No 3 (2024): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i3.4983

Abstract

The process of cutting low carbon steel (ST-37) typically utilizes High-Speed Steel (HSS) tools owing to their high hardness, affordability, and ease of shaping tool geometry. In machining, tool geometry plays a crucial role in the material cutting process and determines the quality of the final product, particularly surface roughness. The objective of this research is to achieve optimal surface roughness by varying the tool geometry and nose radius. This study employed an experimental approach using ST-37 and HSS tools. The variations in tool geometry include side rake angles of 12°, 15°, and 18°; side cutting edge angles of 85°, 80°, and 75°; and nose radii of 0 mm, 0.4 mm, and 0.8 mm. The machining parameters applied consist of a cutting depth of 1 mm and 2 mm, spindle rotation speeds of 185 rpm, 425 rpm, and 624 rpm, and a feed rate of 0.05 mm/rev, 0.075 mm/rev, and 0.1 mm/rev. Tool wear measurements were captured using a USB camera, whereas the surface roughness was assessed using a surface roughness tester. The impact of the tool geometry on the surface roughness was analyzed using the Taguchi-Grey Relational Analysis (Taguchi-GRA) and ANOVA methods. The optimal combination for ST-37 lathe machining with a sharpening tool is: A1 (cutting depth 1 mm), B1 (cutting speed 17.42 m/min), C3 (feed 0.05 mm/rev), D1 (corner radius 0 mm), E3 (side rake angle γ 18°), and F3 (side cutting edge angle γ 75°). According to the Analysis of Variance (ANOVA), three factors—cutting speed, tool tip angle, and chip angle—should be considered to achieve minimal tool wear and desirable surface roughness during machining
Multiresponse optimization of hole number and surface roughness in drilling processes for 316l stainless steel material using Taguchi-grey relational analysis method Pramono, Atik; Burhanuddin, Yanuar; Ibrahim, Gusri Akhyar; Harun, Suryadiwansa
Jurnal Polimesin Vol 22, No 5 (2024): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i5.4470

Abstract

Implemention of Washing Machine to Increase The Production Capacity of Sweet Potato : Implementasi Mesin Pencuci untuk Meningkatkan Kapasitas Produksi Ubi Jalar Gusri Akhyar Ibrahim; Indra Hermawan; Arinal Hamni; Dewi Sartika; Subeki; Ahmad Su’udi
Dharmakayana Vol 2 No 1 (2025): Mei : Dharmakayana: Journal of scientists, engineers, educators and scientific ac
Publisher : Program Studi Teknik Mesin, Fakultas Teknik Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dk.v2i1.41156

Abstract

The rotary system sweet potato washing machine is used to clean sweet potatoes that are dirty and contain lots of soil and other impurities such as microorganisms. The rotary system which rotates and rolls is used for perfect movement, so that the dirt covering the sweet potato is removed completely. The aim of this activity is to test and determine the production capacity of the rotary system of sweet potato washing machines used by sweet potato collecting farmers. The testing was carried out by putting a number of sweet potatoes into the washing tub, along with running water as a cleaning fluid. The drum is rotated with a rotation speed of 1430 rpm which is connected to a gear ratio of 1:30, so the rotation speed is smaller. The stirring arm is moved simultaneously with the movement of the drum. The rotating stirrer arm will provide a more dynamic movement so that the adhering soil will be removed from the surface of the sweet potato, as the washing water flows. The test results showed that the process of washing the sweet potatoes was successful, where the sweet potatoes that had dirt attached to them came off completely. The production capacity of the sweet potato washing machine is 50 kg, with a washing time of 5 minutes. The production cycle for a rotary system sweet potato washing machine is 15 minutes while manual washing is 40 minutes. Meanwhile, the productivity of rotary system washing sweet potatoes can reach 180 kg/hour. The production costs required for the equipment are IDR. 539,-/hour.
Mercu Suar Nelayan di Desa Maja Lampung Selatan Panuju, Achmad Yahya Teguh; Harun, Suryadiwansa; Ibrahim, Gusri Akhyar; Tarkono
Nemui Nyimah Vol. 4 No. 2 (2024): Nemui Nyimah Vol.4 No.2 2024
Publisher : FT Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/nm.v4i1.143

Abstract

This community service project aimed to provide a simple lighthouse solution in Maja Village, Kalianda, South Lampung. The primary issue faced by local fishermen was the lack of navigation guidance during nighttime sailing due to blocked light from residential houses by the coastal seawall. The proposed solution involved the construction of two solar-powered lighthouses, designed to provide sufficient brightness and withstand coastal environmental conditions. This activity was carried out through collaboration between students, village officials, and the community, following a method that included problem identification, product design formulation, lamp pole construction, and installation. The results demonstrated that both lighthouses functioned optimally in assisting fishermen’s navigation, improving safety, and supporting night fishing activities. Additionally, the use of solar energy introduced the community to the concept of sustainable renewable energy.
PENGUJIAN DAN ANALISIS PERFORMA PENUKAR KALOR (SHELL AND TUBE) ALIRAN MENYILANG PADA MESIN PENGERING KOPI PABRIK KOPI TULEN Rantaujaya, Agus; Amrizal, Amrizal; Ibrahim, Gusri Akhyar
Jurnal Ilmiah Teknik Mesin FEMA Vol. 3 No. 2 (2025)
Publisher : FT UNILA

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Abstract

Penukar kalor berperan penting dalam sistem pengeringan biji kopi pada mesin pengering mekanik karena berfungsi memanaskan udara sebelum memasuki ruang pengering. Penelitian ini mengevaluasi kinerja dua penukar kalor tipe shell and tube aliran menyilang pada Mesin Pengering Kopi Pabrik Kopi Tulen dengan memvariasikan laju aliran massa udara. Penukar kalor 1 diuji pada laju aliran 0,0194–0,0732 kg/s, sedangkan Penukar kalor 2 diuji pada 0,0249–0,084 kg/s. Hasil menunjukkan bahwa peningkatan laju aliran massa udara menurunkan temperatur udara keluar, meningkatkan laju perpindahan panas, serta menurunkan efektivitas penukar kalor. Temperatur udara keluar tertinggi pada Penukar kalor 1 mencapai 277 °C pada laju 0,0194 kg/s, sedangkan Penukar kalor 2 mencapai 316 °C pada laju 0,0249 kg/s. Tegangan gasifier optimum adalah 80 V karena menghasilkan rentang temperatur udara 50–100 °C yang sesuai untuk pengeringan kopi. Laju perpindahan panas maksimum tercatat sebesar 13.968 W pada Penukar kalor 1 (laju udara 0,0732 kg/s) dan 20.950 W pada Penukar kalor 2 (laju udara 0,0784 kg/s). Efektivitas tertinggi masing-masing penukar kalor adalah 39,24% dan 59,57%. Penelitian ini menegaskan bahwa variasi laju aliran udara sangat memengaruhi performa penukar kalor dan dapat digunakan sebagai dasar optimasi proses pengeringan kopi.
Pemisahan Glukomanan Umbi Porang Berdasarkan Massa Partikel Menggunakan Metode Tiupan Blower pada Produk Hammer–Disk Mill Ibrahim, Gusri Akhyar; Subeki, Subeki; Valiandra, Tito; Sartika, Dewi; Dityamri, Arzaq Guruh; Arinal, Arinal
JURNAL TEKNIK MESIN Vol 14, No 2 (2025): Oktober
Publisher : Universitas Bandar Lampung

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Abstract

Abstrak: Umbi porang (Amorphophallus spp.) mengandung polisakarida glukomanan yang bernilai ekonomi namun sering tercampur dengan kalsium oksalat sehingga menurunkan mutu tepung. Penelitian ini mengevaluasi pemisahan glukomanan berdasarkan massa partikel menggunakan kombinasi proses penggilingan Hammer–Disk Mill, pengayakan (mesh 40, 60, 80), dan tiupan blower pada kecepatan 7 m/s ke dalam terowongan udara. Sampel tepung (total 365 g per percobaan) diumpankan melalui konveyor dan ditiup; jarak jatuh partikel dicatat setiap 20 cm hingga 100 cm. Kadar glukomanan diindikasikan oleh kemampuan menyerap air: tiap sampel dicampur dengan 40 ml air, diaduk 1 menit, dan diamkan 60 s; selisih volume air dinyatakan sebagai daya serap (mL). Hasil menunjukkan fraksi lolos ayakan 60 mesh memiliki konsentrasi glukomanan tertinggi, dengan jarak jatuh dominan pada 20–40 cm. Nilai daya serap rata-rata untuk mesh 60 pada jarak ini adalah ≈26 mL, sedangkan mesh 40 dan 80 menunjukkan pola berbeda (mesh 80: daya serap lebih tinggi menandakan kontaminasi pati/kalsium oksalat lebih besar). Kesimpulannya, kombinasi penggilingan Hammer–Disk Mill, pengayakan, dan tiupan blower (7 m/s) efektif memisahkan fraksi glukomanan, dengan potensi aplikasi pada skala industri untuk meningkatkan mutu tepung porang. Kata kunci—glukomanan, porang, blower, hammer-disk mill, pengayakan, daya serap air.
Analisis Pengaruh Kecepatan Potong terhadap Progresivitas Aus dan Mekanisme Kerusakan Mata Bor Ortopedi SS316L pada Proses Pengeboran Tulang Kortikal Ibrahim, Gusri Akhyar; Tarkono, Tarkono; Ferdianto, Edo; Burhanuddin, Yanuar; Dityamri, Arzaq Guruh; Hamni, Arinal
JURNAL TEKNIK MESIN Vol 14, No 2 (2025): Oktober
Publisher : Universitas Bandar Lampung

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Abstract

Abstrak. Pengeboran tulang kortikal merupakan tahap penting dalam prosedur bedah ortopedi untuk pemasangan implan, di mana peningkatan suhu dan keausan mata bor dapat memengaruhi akurasi serta keamanan operasi. Penelitian ini bertujuan untuk menganalisis pengaruh variasi kecepatan potong terhadap progresivitas aus dan mekanisme kerusakan mata bor ortopedi berbahan SS316L selama proses pengeboran tulang kortikal. Pengujian dilakukan menggunakan tulang kortikal sapi sebagai model biologis yang memiliki sifat mekanik mendekati tulang manusia. Variasi kecepatan potong yang digunakan meliputi 5,027 m/menit, 10,0 m/menit, dan 15,708 m/menit dengan laju pemakanan konstan sebesar 35 mm/menit serta penggunaan cairan pendingin OpSite Spray. Keausan mata bor dievaluasi berdasarkan nilai flank wear (Vb) menggunakan mikroskop digital dan dianalisis dengan perangkat lunak AutoCAD. Hasil penelitian menunjukkan bahwa pada kecepatan potong 5,027 m/menit, waktu pengeboran hingga mencapai batas keausan 0,2 mm adalah 94,67 menit, sedangkan pada kecepatan 15,708 m/menit waktu tersebut menurun menjadi 38,88 menit. Fenomena ini menunjukkan bahwa peningkatan kecepatan potong mempercepat laju keausan akibat kenaikan suhu dan intensitas gesekan pada zona pemotongan. Mekanisme keausan yang dominan adalah keausan abrasif dan adhesif yang dipicu oleh peningkatan energi gesek dan suhu lokal. Dengan demikian, kecepatan potong merupakan parameter kritis yang menentukan umur pakai serta keandalan mata bor ortopedi pada proses pengeboran tulang kortikal
Co-Authors . Tarkono, . A Hamni Achmad Yahya Teguh Panuju Achmad Yahya Teguh Panuju Afriani, Lusmelia Agus Haryanto Agus Setiawan Ahmad Rosibi Ahmad Su’udi Ahmad Yahya Ahmad Yahya TP Ahmad Yahya TP, Ahmad Ahmad Yuliyan Akbar, G I Akhmad Isnain Pulungan Akhmad Isnain Pulungan, Akhmad Isnain Alan Suseno Alim Fadila Rahman Amrizal Amrizal An Nisa Magnolia Andi Kusnadi Anjar Tri Gunadi Anjar Tri Gunadi, Anjar Tri Arinal Hamni Arinal Hamni Arinal Hamni Arinal, Arinal Armulani Patihawa Arzaq Guruh Dityamri Arzaq Aufadhia Bagus Ramadhan Bagus Saputra Burhanuddin, Y Burhanuddin, Yanuar Citra Persada Deky Nanda Radigo Putra Dewi Sartika DEWI SARTIKA Dewi Sartika DEWI SARTIKA Dewi Sartika Didiek Embrijakto Dikpride Despa Dimas Rizky Hermanto Dityamri, Arzaq Guruh Dityamri, Arzaq Guruh Dodi Wibowo Dodi Wibowo, Dodi Dwiastanto, Lucius Patria Giri Eko Agus Supriyanto Elida Purba Endra Saputra Endro Prasetyo Wahono Ferdianto, Edo Firmansyah, Andre Gustiyawan, Ahmad Hamni, A Hamni, Arinal Henddy Purnomo Henddy Purnomo, Henddy Indra Hermawan Irwan Sukri Banuwa Joni Iskandar Joni Iskandar Julita, Sela Karina Gracia Agatha Tambunan Leksono, Panji Mario Lestari, Sri Maria Puji Libiru, Rofika Lusmelia Afriani M. Dyan Susila M. Ridho Ulya Mahyudin, Yovial Milyanti, Rita Muh Thohirin Muhammad Daud Aria Falah Muhammad Iqbal Muhammad Iqbal Muhammad Taqwa N Tanti NETI YULIANA Novri Tanti, Novri NUR EFENDI Nur Efendi Nurwijayanti P N Putinela Panuju, A YT Patihawa, Armulani Pramono, Atik Pratondo, Tanto Puan Mutia Ayunisa Puan Mutia Ayunisa Putinela, P N R Ramadhan Rafi, S A Ramadhan, Bagus Ramadhan, R Rantaujaya, Agus Rizki Ramadhan Robby Saputra S A Rafi Sahid Ar Rafi Salsabila, Unik Hanifah Saputra, Endra Sela Julita Seldi Prayoga Septiani, Cici Shirley Savetlana Shirley Savetlana, Shirley Sri Hidayati Sri Hidayati Sri Maria Puji Lestari Sri Maria Puji Lestari Sri Maria Puji Lestari Sri Puji Maria Sri Ratna Sulistiyanti Sri Waluyo Subeki Subeki Subeki Subeki, Subeki suci hardina rahmawati Supriyadi, Eko Agus Suryadiwansa Harun Suryadiwansa Harun Sussi Astuti Sussi Astuti Syaipudin Anwar T. Tarkono Tanti, N Tanto Pratondo Utomo Tarkono Tarkono Tarkono Tarkono, Tarkono Trisya Septiana Udin Hasanudin Valiandra, Tito Valiandra, Tito Wahyu Budiono Wahyu Hidayat Wibowo, Muhammad Pandu Wijaya, Bayu Frans Wisnaningsih Yahya, Achmad Yanuar Burhanuddin Yanuar Burhanuddin Yanuar Burhanuddin Yanuar Burhanuddin Yulius Riansa Priyusdito Yusman Zamzami Yusman Zamzami, Yusman Zulhendri