Garuda - Garba Rujukan Digital

p-Index From 2020 - 2025

8.495

P-Index

This Author published in this journals

All Journal Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut TEKNIK Rotasi JURNAL TEKNIK MESIN Semantik TELKOMNIKA (Telecommunication Computing Electronics and Control) Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Prosiding SNATIF Jurnal NERS Majalah Ilmiah MOMENTUM Jurnal Rekayasa Mesin Proceeding of the Electrical Engineering Computer Science and Informatics Jurnal Keperawatan Silampari Medica Hospitalia Jurnal Pembelajaran Pemberdayaan Masyarakat (JP2M) Teknomekanik Jurnal Rekayasa Energi dan Mekanika Mechanical Engineering for Society and Industry Automotive Experiences IJEE (International Journal of Engineering Education) Journal of Biomedical Science and Bioengineering Journal of Mechanical Engineering and Applied Technology Advance Sustainable Science, Engineering and Technology (ASSET)

Rifky Ismail

Department Of Mechanical Engineering, Diponegoro University, Jl. Prof. Soedarto, Tembalang, Kec. Tembalang, Kota Semarang, Jawa Tengah 50275.

Author-ID : 289458

Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Dentistry Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Other

Published : 101 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4 5

PEMANFAATAN MESIN PEMANAS INDUKSI UNTUK PENGERASAN PERMUKAAN RODA GIGI PRODUK UKM Rifky Ismail; M. Tauviqirrahman; Sugiyanto Sugiyanto Sugiyanto; Jamari Jamari Jamari; Agung Warsito; Abdul Syakur
Semantik Vol 1, No 1 (2011): Prosiding Semantik 2011
Publisher : Semantik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.139 KB)

Pemanasan induksi, yang selama ini telah digunakan dalam proses peleburan logam, merupakan sistem pemanasan yang sangat cepat dan efisien karena rugi-rugi radiasi dapat dikurangi. Pengerasan permukaan roda gigi menggunakan mesin pemanas induksi dilakukan dengan meletakkan roda gigi di dalam kumparan/coil yang dialiri arus listrik sehingga timbul medan magnet yang menghasilkan panas. Pemanasan secara kontinyu pada roda gigi hingga temperaturnya mencapai fase transformasi dan disertai dengan proses pendinginan cepat dapat menghasilkan pengerasan pada permukaan roda gigi. Penelitian ini bertujuan untuk mengkaji pemanfaatan alat pemanas induksi untuk proses pengerasan roda gigi UKM.Sistem rangkaian berbasis Metal-Oxide Semiconductor Field-Effect Transistor (MOSFET) dirancang untuk menghasilkan arus AC pada kumparan dengan frekuensi tinggi. Frekuensi kerja yang berkisar antara 30- 80 KHz akan memberikan pemanasan yang terkonsentrasi pada permukaan roda gigi sehingga bagiandalam roda gigi tetap bersifat ulet sehingga mampu menahan beban puntir yang besar. Perubahan proses pemanasan yang dilakukan oleh UKM produsen roda gigi dari dapur peleburan atau dapur pemanas beralih pada mesin pemanas induksi dapat meningkatkan keseragaman dan ketepatan proses pemanasan roda gigi. Proses pemantauan dan pengukuran pemanasan menggunakan mesin pemanas induksi lebihmudah sehingga dapat membantu UKM membuat produk roda gigi yang lebih berkualitas dan seragam.Kata Kunci: Pemanas induksi, Pengerasan roda gigi, UKM, Teknologi tepat guna

PERHITUNGAN KEAUSAN PADA KONTAK ROLLING-SLIDING Eko Saputra; Rifky Ismail; Muhammad Tauviqirrahman; Jamari Jamari Jamari
Semantik Vol 1, No 1 (2011): Prosiding Semantik 2011
Publisher : Semantik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (556.01 KB)

Kontak rolling-sliding adalah suatu fenomena kontak yang terjadi pada proses gerak putar antar benda, dimana gerak rolling (pure rolling) disertai dengan sliding. Salah satu efek dari kontak rolling-sliding adalah terjadinya slip dimana kecepatan putar permukaan satu dengan yang lain tidak sama. Kontakrolling-sliding mengakibatkan keausan pada permukaan yang saling kontak. Sebagai contoh, fenomena ini dapat terjadi dalam kontak antar roda gigi, kontak antar roda dengan rel kereta dll. Keausan yang terjadi pada kontak rolling-sliding dapat dihitung menggunakan metode eksperimen, analitik dan numerik. Metode eksperimen dapat dilakukan dengan menggunakan alat twin disc test, metode analitik dilakukan dengan perhitungan matematis, sedangkan metode numerik dapat dilakukan menggunakan FEM (finite element method) dan BEM (boundary element method). Dalam beberapa tahun terakhir, perhitungan keausan menggunakan metode analitik dan numerik berkembang dengan pesat. Penelitian ini akan membahas mengenai perhitungan keausan kontak rolling-sliding dengan metode analitik GIWM (global incrementalwear model) dan metode numerik (FEM dan BEM) dari beberapa literatur. Metode analitik dan numerik menunjukkan hasil yang berimpit dengan perhitungan secara eksperimen. Kelebihan dari penggunaan metode analitik dan numerik adalah adanya penghematan dari segi biaya eksperimen.Kata kunci : kontak rolling-sliding, keausan, perhitungan analitik, simulasi numerik

Anthropomorphic transradial myoelectric hand using tendon-spring mechanism Mochammad Ariyanto; Rifky Ismail; Joga D. Setiawan; Elga P. Yuandi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 1: February 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i1.11600

In the developing countries, the need for prosthetic hands is increasing. In general, transradial amputee patients use prosthetic hands that are passive like a body-powered prosthesis. This research proposes a low-cost myoelectric prosthetic hand based on 3D printing technology. Hand and finger size were designed based on the average size of human hands in Indonesia. The proposed myoelectric hand employs linear actuator combined with the tendon-spring mechanism. Myoelectric hand was developed with five modes of grip pattern to perform various object grasping in activity of daily living. Control strategy had been developed for controlling the motion of flexion and extension on the hand and saving the energy consumed by the actuators. The control strategy was developed under MATLAB/Simulink environment and embedded to Arduino Nano V3 using Simulink Support Package for Arduino Hardware. Surface electromyography (EMG) sensor was used in this research for reading the muscle activity of the user/wearer. The proposed myoelectric hand had been tested in object grasping test and was implemented on a study participant with transradial amputee.

Redesigning of 4 (Four) Blades Propeller Installed in a Wooden Fishing Boat in a Ship Yard in Tegal, Central Java Province Rifky Ismail; Mohammad Tauviqirrahman; Deni Mulyana; Fiki Firdaus; J. Jamari
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol. 10 No. 2 (2019): Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut
Publisher : Bogor Agricultural University

For design of marine propeller, the energy supply from marine engine to the propeller should be converted to thrust force with minimum losses. Furthermore, the unwanted vibration and cavitation due to the overlooking a detail calculation of the propeller should be prohibited for increasing the fuel efficiency and life-span of the propeller. In the last few decades, most of small and medium sized enterprises (SMEs) focusing their work on ship component industry in Central Java Province Indonesia provide the marine propeller to the ship manufacturer and ship repairmen in some shipyards in northern part of Central Java port. The design of the propeller is never been observed and optimized. The aim of the present work is to redesign the installed propeller on a wooden fishing boat with the new optimized design using B-Series propeller theory approach. The reverse engineering method uses three-dimensional scanner to obtain the geometrical data of the installed ship propeller. The new optimized propeller design is obtained from free software calculation based on the boat and engine specification. The comparison shows that the new optimized propeller design has a wider blade and larger pitch and increases 20% of the open water efficiency of the propeller performance at lower engine rotation. Keywords: B-series design, fishing boat, marine propeller, redesign, optimization

Effectivity of Exoskeleton Robot-Assisted Therapy on Improving Muscle Strength in Post-Stroke Patient Aulia Salwa Alfaina; Rahmi Isma Asmara Putri; Hari Peni Julianti; Trianggoro Budisulistyo; Rifky Ismail
Medica Hospitalia : Journal of Clinical Medicine Vol. 8 No. 3 (2021): Med Hosp
Publisher : RSUP Dr. Kariadi

Background: Upper limb weakness is the most disability caused by stroke. The availability of physiotherapists is still limited in Indonesia. The exoskeleton robot is a developing technology that involve in stroke rehabilitation therapy. Objective: To evaluate the effectiveness of exoskeleton robot-assisted therapy on improving muscle strength of patients after stroke. Methods: An experimental study with two groups pre-test and post-test design carried out using consecutive sampling among outpatient stroke patients in Diponegoro National Hospital (RSND) and William Booth Hospital (RSWB), Semarang. Patients in the robotic group (RG) (n=8) received 16 training sessions. Each session consists of 30 passive and ten active-weighted elbow flexion-extension with the exoskeleton robot. Meanwhile, the control group (CG) (n=8) received equivalent training of conventional therapy. The primary outcome of muscle strength was measured by Manual Muscle Testing (MMT) and handheld dynamometer. Pre and post-test MMT score data in each group were analyzed by Wilcoxon test, while handheld dynamometer score data were analyzed by paired t-test. Data between the two groups were analyzed by Mann-Whitney test and unpaired t-test. Results: Significant improvements were shown for the MMT score (RG: p=0.014, CG: p=0.034). There were significant handheld dynamometer score improvements on muscle strength for elbow flexor and extensor in RG (p = 0.008 and p = 0.005 respectively) and in CG (p=0.036 and p=0.008 respectively). No significant differences for MMT and handheld dynamometer score between the two groups. Conclusion: The exoskeleton robot-assisted therapy was as effective as conventional therapy for improving muscle strength in stroke patients.

STUDY OF ROLLING CONTACT OF A CYLINDER ON A ROUGH SURFACE WITH FINITE ELEMENT ANALYSIS Rifky Ismail; M. Tauviqirrahman; . Jamari; D.J. Schipper
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2010): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 1 2010
Publisher : Prosiding SNST Fakultas Teknik

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

This work presents a simulation of 2D rolling contact on a rough surface using a finite element analysis (FEA). The finite element software, ABAQUS, is used for simulating the rigid cylinder rolls over on a rough surface with different applied loads. The rough surface is considered to be elastic-perfectly plastic aluminum with strain hardening. The pure rolling and frictionless contact is assumed in the cylinder movement on a certain linear distance. The applied load is modeled as three different interferences, which results deformations and stress distributions. The static contact between a rigid indenter on a rough surface is used to validate the result by comparing the present results and the previous research results. The resulted elastic-plastic deformation and von Mises stress distribution in the simulation is reported. The increase of the applied load results the larger the deformation of the asperity on the rough surface. It also takes effect on the von Mises stress distribution. The plastic deformation area on the top of the rough surface asperity become wider as the load is increase. The deformation and stress distribution in the simulation describes the phenomenon where the engineering surface is deformed due to the rolling contact. Keywords: rolling contact, rigid cylinder, rough surface, finite element

SURFACE HARDENING CHARACTERIZATION OF TRANSMISSION GEARS Rifky Ismail; . Jamari; M. Tauviqirrahman; . Sugiyanto; Trias Andromeda
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2011): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 2 2011
Publisher : Prosiding SNST Fakultas Teknik

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

This paper is presented to compare the transmission gear products from SME (UKM gear) and national scale manufacturer (OEM gear) especially on the surface hardening characterization. Both gears were heat treated with different methods. The gear product of SME was heat treated by pack carburizing and quenching whereas the OEM gear was predicted to be heat treated using induction heating with high frequency. The surface hardening characterization was conducted by investigating the hardening thickness, the hardness number and the microstructure observation on the gear surfaces. The result of the hardening thickness investigation reveals a distinction on the depth of hardening penetration. The heat treatment using long interval pack carburizing of UKM gear produces a deeper penetration and the higher hardness number on the gear surface whereas the OEM gear has a thin hardness penetration and lower hardness number. The microstructure of the both gears depicts the different types of phase. The SME gear shows the present of the carbon infiltration on the martensitic phase structure boundary whereas the OEM gear exhibits lower bainite phase on the gear surface. With this condition the OEM gear is predicted to behave a better contact stress distribution during operation. Keywords: gear, heat treatment, surface hardening, microstructure

KARAKTERISTIK AISI 304 SEBAGAI MATERIAL FRICTION WELDING Moh Fawaid; Rifky Ismail; . Jamari; Sri Nugroho
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2012): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 3 2012
Publisher : Prosiding SNST Fakultas Teknik

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

Stainless steel tipe austenitic dipilih sebagai material untuk sebuah produk karena sifat tahan korosi, non magnetic dan weldability yang baik. Beberapa peneliti menggunakan AISI 304 sebagai material riset yang disambung dengan material lain seperti alumunium dan copper dengan metode friction welding. Pengelasan gesek menggunakan parameter seperti friction time, friction pressure, upset time, upset pressure dan putaran spindle. Untuk memudahkan analisa struktur mikro, Sathiya membagi spesimen menjadi 3 region, sedangkan Ozdemir membagi zona menjadi fully plastic deformed zone (FPDZ), partial deformed zone (PDZ) dan deformed zone (DZ). Nilai kekerasan daerah sekitar sambungan AISI 304 menurut Paventhan adalah 490HV, Mumin Sahin nilai Hardness 225-250HV. Nilai kekerasan AISI 304-AISI 202 yang disambung dengan friction time 30 dan 40 detik mempunya nilai kekerasan pada AISI 304 kekerasan HAZ sebesar 686 HV dan 567 HV. Nilai kekerasan yang berbeda didipengaruhi oleh friction time serta prosentase Cr didalam komposisi kimia material Kata kunci: friction welding, austenitic, hardness

ALAT PERAJANG SINGKONG MENGGUNAKAN SUMBU PUTAR PISAU VERTIKAL Muhammad Ulfan Arif; Amrih Prayogo; Machrizal Noor; Joyanto Sitohang; Sukarno Sukarno; Rifky Ismail
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2018): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 9 2018
Publisher : Prosiding SNST Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (239.425 KB)

Tujuan dari perancangan ini adalah terciptanya suatu alat perajang singkong yang dapat meningkatkan jumlah produksi keripik singkong dengan menggunakan alat yang lebih efektif dan efisien. Metode yang dilakukan menggunakan teori perancangan Ulrich. Terdapat lima fase yaitu perancangan, pengembangan konsep, perancangan tingkat sistem, perancangan rinci, pengujian dan perbaikan, dan peluncuran produk. Melalui metode tersebut didapaptkan konsep perancangan alat perajang singkong dengan perancangan 4 lubang dan sumbu putar pisau vertikal. Hasil yang diperoleh dengan konsep tersebut dapat meningkatkan hasil produksi UMKM dari 50 kg/hari menjadi 200 kg per hari jika dilakukan dengan alat perajang singkong menggunakan sumbu putar vertikal sesuai dengan konsep perancangan pada makalah ini. Kata kunci : alat, keripik, perajang, singkong

STUDI PERILAKU TEKANAN KONTAK PADA PEMODELAN KEAUSAN RUNNING-IN DAN STEADY STATE DENGAN PENGUJIAN PIN-ON-DISC Imam Syafa’at; . Jamari; Susilo Adi Widyanto; Rifky Ismail
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2011): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 2 2011
Publisher : Prosiding SNST Fakultas Teknik

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

Dalam perancangan rekayasa, tribologi adalah kajian penting dalam kontribusinya terhadap kehandalan dan efisiensi suatu komponen permesinan, termasuk diantaranya kajian tentang keausan. Dalam kontak sliding, para peneliti membagi keausan menjadi tiga fase, yaitu: running-in, steady state (fase tunak) dan wear out. Tujuan penelitian ini adalah untuk mengetahui perilaku tekanan kontak (contact pressure) pada fase running-in dan steady state dengan pemodelan numerik menggunakan pin yang diputar pada disc. Pin dari baja dengan modulus elastisitas 213 GPa yang berujung bentuk setengah bola dengan radius 5 mm diberi beban 15 N. Simulasi finite element analysis (FEA) dengan sofware ANSYS® dilakukan untuk mengetahui tekanan kontak ini. Pembuatan geometri, kondisi batas, sifat-sifat material dan pemberian beban awal digunakan sebagai masukan awal dalam simulasi FEA. Dari sini perilaku tekanan kontak selama proses sliding akan diteliti. Hasil pemodelan FEA menunjukkan bahwa perilaku tekanan kontak pada daerah kontak dalam fase running-in mengalami mengalami penurunan sampai tercapai kestabilan dalam fase steady state pada kisaran 63,82 MPa saat jarak sliding 80405 mm. Kestabilan ini tetap terjaga meskipun terjadi peningkatan jarak sliding. Kata kunci: running-in, steady state, tekanan kontak, pin-on-disc, FEA.

Co-Authors . Jamari . Jamari . Jamari . Sugiyanto Abd. Rasyid Syamsuri Abdul Syakur Abid Muflih Ernandara Abram Ali Sasono Achmaditiya, Galuh Agung Warsito Agustinus Purna Irawan Ahmad, Zakki Kurniawan Akhlis Rahman Nurhidayat Akmal Putra Fardinansyah Alfiana Fitri Istiqomah Amin Husni Amrih Prayogo Ananto, Gilar P. Andrew Johan Andromeda, Trias Arifin, Zainal Ariyanto, Mochammad Arvy Yudha Sadewa Atanasius Priharyoto Bayuseno Athanasius Priharyoto Bayuseno Athanasius Priharyoto Bayuseno Aulia Salwa Alfaina Bachtiar, Yuriz Bagastomo, Riondityo Soni Bagiyo Condro Purnomo Bakhtiar, Yuriz Bayuseno Bayuseno Budi Setiyana Budi Setiyana Budi Setiyana Budi Waluyo Budiman, Rifky Ardiansyah Budy Wiryawan Candratama, Aditya Cionita, Tezara D.J. Schipper Deni Mulyana Deni Mulyana Devit Ardiyansyah Dinulloh, Muhammad Rafli Wiratama Dosma Ruben R Nababan Dwi Pudjonarko Dwi Setyawan Egastya Fazal Santoso Eko Saputra Eko Saputra Eko Wahyu Saputro Elga P. Yuandi Eva Hertnacahyani Herraprastansi Fachri Adam Fachry Abda El Rahman Fardinansyah, Akmal Putra Fariz Wisda Nugraha Ferdian Gamalea Delasta Fiki Firdaus Fiki Firdaus Fitriyana, Deni Fajar Friady Gumilar Fungky Dyan Pertiwi Gilar P. Ananto Gunawan Dwi Haryadi Gusti Andika Ramadanu Hadi, Jason Reynald Haira, Mahmuda Hanif Nur Kholid Hari Peni Julianti Hartanto Prawibowo Hasnil, Nabiilah Helmy Purwanto Hidayati, Uslah Ilham Fajar Bagaskara Ilham Habibi, Ilham Imam Syafaat Irfan, Afi Muhammad Ismail, Nur Hidayah Ismoyo Haryanto Istiqomah, Alfiana Fitri Iwan Budiwan Anwar J. Jamari Jamari Jamari Januar Parlaungan Siregar Januar Parlaungan Siregar Joga D. Setiawan Joga Dharma Setiawan Joga Dharma Setiawan Joshua W. Syafei Joyanto Sitohang Kadavi, Fadhil Muhammad Kharisma A. Pambudi Kistriyani, Lilis Kolakoti, Aditya Kristianto, Henry Luky Hidayat M.Pd S.T. S.Pd. I Gde Wawan Sudatha . Machrizal Noor Mahendra, Arya Makhfudz Ali Margana Margana Michael Ambarita Mochammad Ariyanto Mochammad Ariyanto Mochammad Ariyanto Moh Fawaid Moh. Erlangga Aditya Rifandi Mohammad Tauviqirrahman Muchammad Muchammad Muhammad Dzaky Arizsa Athallah Muhammad Dzulfikar Muhammad Fahrizal Almeir Muhammad Farel Muhammad Hafizh Mubarak Muhammad Ihya Mahendra Adi Muhammad Ikhsan Muhammad Khafidh Muhammad Rezha Assalam Muhammad Ritzky Novhar Muhammad Ulfan Arif Muji Setiyo Munadi Munadi Murti Ayu Nur Safitri Muryanto Nizar Rahman Aprilitama, Nizar Rahman Norman Iskandar Novianto, Arief Novriansyah, Robin Nursafitri, Murti Ayu Nurudin, Tri P., Alhakim B. P., Biyan B. Pambudi, Kharisma A. Pangesti, Adelia Pangestu, Wahyu Adi Pasmanasari, Elta Diah Poedji Haryanto Prasetyo, Adzan Jati Pratama, Wahyudi Prawibowo, Hartanto Priwintoko, Baharudin Purwati, Wiwik Putera, Finny Pratama Putra, Mileno Marandria Putri, Farika Tono Rahmawati, Maria Belladonna Rahmi Isma Asmara Putri Rama Sinatria Wisesa Reswara, Ghani Widyatna Ricky Prawira Rilo Berdin Taqriban Riski Maulana Rochman, Muhamad Latifur Rohmatullah, Muhammad Romadhon, Saeful Rofi Rusdjijati, Retno Samsul Alamsyah Perwiranegara Saputra, Bagus Ari Sendie Yuliarto Margen Siregar, Januar Parlaungan Sitanggang, Frandy A Siti Aminah Sri Nugroho Sugiyanto - Sugiyanto Sugiyanto Sugiyanto Suhartini Suhartini Ismail Suhartini Ismail, Suhartini Sukarno Sukarno Sulardjaka Sulardjaka Sulistyo Sulistyo Sulistyo Sulistyo Supriyo Suryawan, Donny Susilo Adi Widyanto Syafa’at, Imam Syafei, Joshua W. Tavan Faiz Dhiahaqi Tezara Cionita Thesar Aditya Nurcholis Toni Prahasto Trianggoro Budisulistyo Turasno, Buang Wahid, Muhammad Abdul Wahyu Hidayat Wijayanto, Juli Eri Yasya Khalif Perdana Saleh Yogi Reza Ramadan, Yogi Reza Yopi Harwinanda A Yosafat Keljeski Sinaga Yosua Wijaya Yotenka, Rahmadi Yuris Setyoadi Yusuf Subagyo Zainal Arifin

Title

Found 101 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 101 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 101 Documents
Search