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All Journal Jurnal Sains dan Teknologi Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Rekayasa Mesin Jurnal Pengabdian UntukMu NegeRI Jurnal Pemberdayaan Masyarakat Madani (JPMM) Jurnal Surya Teknika Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Journal of Material Processing and Characterization (JMPC) Teknologika Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Proksima BATOBO: Jurnal Pengabdian Kepada Masyarakat Jurnal Polimesin

Dedy Masnur, Dedy

Universitas Riau

Author-ID : 1708500

Religion Aerospace Engineering Arts Humanities Automotive Engineering 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 Physics Social Sciences Transportation Other

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Influence Of Pouring Temperatures To Fluidity Of Aluminium Scrap Cans With Investment Casting Using Natural Clays As Mould Materials Rahmat Rosandi; Dedy Masnur
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Pekanbaru area produced scrap of beverage cans; an average of 4.5 tons per month by a scrap collector and it will increase every time. The Pekanbaru area also has natural clays, which can be used as mold material for investment casting. Processing of aluminum cans into a product using the natural clays as a mold in investment casting method will add the economic value of aluminum scrap cans. Study of fluidity is necessary to obtain usable information before creating of cast part design. This research aims to investigate the influence of pour temperatures to fluidity for the aluminum scrap cans casting, in natural clays. In this research used the pouring temperature variables: 650oC, 700oC and 750oC. Results showed the fluidity at pour temperatures of 650oC, 700oC, and 750oC approximately of 213.88 mm, 292 mm, and 360.97 mm, respectively. Results also showed that the fluidity was increased as well as increasing the pour temperatures. The fluidity increased 78.12 mm or 36.52% at pour temperatures of 650oC to 700oC, and it increased 68.97mm or 23.62% at pour temperatures of 700oC to 750oC.Keywords: fluidity, temperature, cast aluminum cans

The Effects of Withdrawal Stop Duration in the Directional Solidification of Al-7 wt% Si Alloy on Solidification Parameters, Microstructure, and Microhardness Seab Piseth; Dedy Masnur
Journal of Material Processing and Characterization Vol 1, No 1 (2020): Articles
Publisher : Departmen Teknik Mesin dan Industri, Fakultas Teknik, Universitas Gadjah Mada

The effects of withdrawal stop duration in the directional solidification of Al-7 wt% Si alloy on solidification parameters, microstructure, and microhardness were investigated. Directional solidification experiments were carried out in five stopping durations: 0 s, 20 s, 30 s, 40 s, and 50 s. Some solidification parameters such as growth rate and temperature gradient were calculated in the stopping region 15 mm from the bottom of the sample. Microstructure parameters such as primary and secondary dendrite arm spacings were defined on both longitudinal and transverse sections in the stopping region, whereas microhardness properties were tested on the longitudinal section in this region. With the rise in the withdrawal stop duration from 0 s to 50 s, the growth rate decreased slightly from 1.26 to 0.84 mm/s, while the temperature gradient remained at 1.71 ˚C/mm. Furthermore, the microstructure of α-Al dendrites became coarser, and their shapes changed from thin to irregular plates. Primary and secondary dendrite arm spacings increased from 106.4 to 205.7 µm and 19.4 to 38.1 µm, respectively, when the stopping duration was increased. In addition, the hardness decreased from 54.0 to 49.9 HV.

DESIGN AND MANUFACTURE CHASSIS AND BODY OF SIMPLE GOKART USING AUTOMATIC CLUTCH AND 7.5 HP ENGINE POWER N. Nazaruddin; Dedy Masnur; Erwin Ardiansyah
Jurnal Teknologika Vol 10 No 2 (2020): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Go-kart is a variant of a simple and small open-roof four-wheeled vehicle for motor sports. Go-kart usually races on small scale circuits. Go-kart racing is usually considered a stepping stone for motor sports that are higher and more expensive. The design of the karts is carried out by mechanical engineering students of the University of Riau based on the size of karts in general. The chassis is made of pipe with ASTM A53 pipe specifications with a tensile strength of 240 MPa with a dimension of length of 6.22 meters, an outer diameter of 33.40 mm and an inner diameter of 30.02 mm. Body building is done with fiber with a catalyst mixture ratio of 1:45. The process of painting with a ratio of primers and hardeners is 1: 4, and clear and hardener 4: 1. A kart with a chassis mass of 7.09 kg and a passenger of 70 kg has been produced, with dimensions of length 1100 mm, width of 610 mm, and distance between axes of 1050 mm. This karting uses the 1994 Astra grand engine with 7.5 HP of power, 6000 rpm rotation and 20 kg mass. The transmission system used is a double automatic type.

Effect of Mold Material on Shrinkage of Investment Casting Wax Pattern Dedy Masnur; Harrianda Hudaya; Putri Nawangsari; Warman Fatra
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 66 No 2 (2022): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Various attempts have been made to substitute metal as the wax pattern mold material due to manufacturing costs and time-consumption. This research investigates the linear and volume shrinkage on the wax pattern of gypsum, silicone rubber, and epoxy resin as alternative materials to metal molds. A nylon master pattern was made by machining. The master pattern size was set as a reference for dimensional comparison with the cast wax pattern. Wax pattern molds were created using the master pattern, namely gypsum, silicone rubber, and epoxy resin. Paraffin wax was heated up to 55˚C in metal, then poured into each wax pattern mold. The length, radius, inlet, and outlet diameter were measured using a profile projector, then the linear shrinkage was calculated. The volume shrinkage was obtained through the sample weighing. The results show that silicone rubber has the lowest linear shrinkage of any sample in contrast to its volume shrinkage.

Pemanfaatan Pasir Sungai Rokan Sebagai Pasir Cetak Pengecoran Logam Aluminium Kaleng Minuman Bekas Dedy Masnur; Warman Fatra
Retii Prosiding Seminar Nasional ReTII ke-11 2016
Publisher : Institut Teknologi Nasional Yogyakarta

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Pemanfaatan pasir Sungai Rokan Hulu masih terbatas sebagai bahan bangunan sehingga pemanfaatannya belum optimal. Opsi alternatif pemanfaatan pasir tersebut sebagai pasir cetak pengecoran logam diharapkan dapat meningkatkan nilai ekonomi dengan memanfaatkan pasir tersebut pada UMKM bidang pengecoran logam. Penelitian ini mengkaji pemanfaatan pasir sungai Rokan dengan memberikan perlakuan terhadap pasir sungai yakni penghalusan butir, penambahan kadar lempung, dan kadar air sehingga kriteria sebagai pasir cetak dipenuhi. Pengujian terhadap pasir cetak meliputi pengujian ukuran butir, pengujian kadar lempung, pengujian kadar air, pengujian mampu bentuk dan pengujian permeabiltas. Proses perlakuan terhadap pasir Sungai Rokan Hulu bagian hilir yaitu berupa penghalusan butiran pasir dengan cara penggilingan selama ± 5 menit untuk setiap 100 gr pasir, penambahan kadar lempung sebanyak 3kg dan penambahan kadar air sebanyak 2,65 kg. Hasil pengujian menunjukkan ukuran butir yang dihasilkan memiliki nilai GFN sebesar 42,17, persentase kadar lempung sebesar 15,21% dan persentase kadar air sebesar 8%. Nilai permeabilitas yang dihasilkan dari proses perlakuan adalah sebesar 5,21 cm/menit dan nilai kekuatan tekan sebesar 0,695 kgf/cm2. Dari hasil penelitian yang diperoleh, dapat disimpulkan bahwa, proses perlakuan terhadap pasir Sungai Rokan Hulu bagian hilir dapat menghasilkan pasir yang sesuai dengan kriteria pasir cetak. Kata Kunci: pasir cetak, pengujian pasir cetak, pengecoran logam.

Analisis Penggunaan Cathodic Protection dengan Metode Sacrificial Anode Sebagai Pengendalian Korosi Pipa Minyak 16 Inci PT. Chevron Pacific Indonesia Simp. Perawang-Minas Area Dedy Masnur; Eko Saputra; Putri Nawangsari
Proksima Vol 1 No 1 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.1.1.13-17

Cathodic protection is a thermodynamic corrosion control method using metal as the cathode. There are two methods of cathodic protection, namely Sacrificial Anode Cathodic Protection (SACP) and Impressed Current Cathodic Protection (ICPP). This study will analyze the use of Cathodic Protection with the Sacrificial Anode method as corrosion control on a 16 inch oil pipe at PT. Chevron Pacific Indonesia. Carbon steel pipe (API 5L Grade B) with cast magnesium anode material. Calculation of anode requirement for corrosion prevention will be compared with actual field data within 10 years. The calculation results show that the number of calculation parameters used affects the results of the anode requirement on an oil pipe with a length of 16 meters, a diameter of 16 inches, anode with a length of 0.648 m, net weight of anode 7.7 Kg, magnesium anode material with an anode output of 10.8 A/m2, anode density 1765 Kg/m3, wear and tear (volume) 2296 x 10-3 m3 A/y, and a life time of 10 years. Theoretical calculations get 6 anode rods while the actual data requires 8 anode rods.

Investigasi Kegagalan Poros Pompa Sentrifugal IP251-U153 pada Unit Recovery Boiler I PT. X Dedy Masnur; Putri Nawangsari; Dea Musyafiroh Akbar
Proksima Vol 1 No 1 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.1.1.25-28

PT. X is one of the industries engaged in the pulp and paper sector which uses centrifugal pumps to move compounds such as liquor, water, and so on. Failure occurred in the operation of the centrifugal pump, namely the fracture of the shaft component which was made of AISI329 stainless steel. This study aims to investigate the failure of the IP251-U153 centrifugal pump shaft and provide recommendations for actions to prevent failure. The stages of analysis carried out were macroscopic analysis of the fracture surface and testing of chemical composition using a Spectral Metal Analyzer. The results of the analysis show that the fracture pattern is brittle intergranular fracture and there is a difference in the percentage chemical composition of the shaft material with the composition of the standard shaft material in the elements Molybdenum (Mo), Manganese (Mn) and Copper (Cu). These elements affect the durability of the shaft. Checking the material composition when accepting a purchase and carrying out a check for alignment on the shaft installation is necessary to avoid failure.

Analisis Kebocoran Boiler Pipe Akibat Korosi pada Recovery Boiler 5 PT. ABC. Ridwan Abdurrahman; Dedy Masnur; Abdul Rahman
Proksima Vol 1 No 1 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.1.1.29-32

Boiler is one component that is widely used in the energy generation industry and reactors. One of the main components of the boiler is the boiler pipe. In field activities, there was a leak in the boiler pipe which experienced corrosion and erosion of the walls of the pipe. This condition results in a decrease in power and capacity in the boiler. The purpose of this practical work is to observe the causes of damage to the boiler pipe, and provide recommendations for prevention due to damage to the boiler pipe. The methods used are: literature study, observation, interviews, and measurement. The results obtained: (1) The calculation results show that the value of the Reynolds number obtained is 16,032,025.86 (Re>4000, turbulent flow). (2) The cause of corrosion on the boiler pipe is due to liquid droplet impingment which is accompanied by an increase in flow velocity and the occurrence of two phases (steam and water) thereby accelerating depletion in the boiler.

Pembuatan Media Informasi Pintar Berbasis Smart Tv Dan Raspberry Untuk Masjid Nur Ikhlas Di Desa Buluh Cina, Kampar Kaspul Anuar; Dedi Rosa Putra Cupu; Warman Fatra; Syafri Syafri; Dedy Masnur; Putri Nawangsari; Nazaruddin Nazaruddin; Dian Oktary
BATOBO: Jurnal Pengabdian Kepada Masyarakat Vol 1 No 2 (2023): BATOBO: Desember 2023
Publisher : Jurusan Teknik Elektro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/batobo.1.2.64-71

Kegiatan pengabdian ini dilaksanakan sesuai dengan usulan Perangkat Desa Buluh Cina yang menginginkan adanya media informasi pintar dengan display berupa smart tv pada masjid Nur Ikhlas yang posisinya dekat dengan lokasi objek wisata desa. Masjid ini sering digunakan oleh wisatawan untuk melaksanakan ibadah shalat. Kegiatan pengabdian dimulai dengan mempersiapkan alat dan bahan berupa raspberry, modul RTC, kabel HDMI, TV LED dan power adaptor. Tahapan kegiatan dilakukan dengan menginstal sistem operasi pada memory card yang dilanjutkan dengan pembuatan tampilan media informasi menggunakan bahasa HTML dan CSS. Tampilan media informasi dibuat semenarik mungkin untuk menampilkan informasi yang diinginkan. Proses berikutnya yang dilakukan yaitu mengkonfigurasi raspberry pi dan installasi web server ke dalam raspberry pi. Hasil pembuatan media ini selanjutnya dipasang di lokasi pengadian. Berdasarkan evaluasi yang dilakukan, media informasi pintar ini sangat membantu pengurus masjid dalam menampilkan informasi penting seperti rencana kegiatan, jadwal shalat, laporan keuangan dan lain lain.

Microcellulose From Pineapple Leaf Fiber as a PotentialSustainable Material: Extraction And Characterization Putri Nawangsari; Warman Fatra; Aryandi Kusuma; Muftil Badri; Dedi Rosa P.C1; Dedy Masnur
Jurnal Polimesin Vol 22, No 1 (2024): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i1.4522

Pineapple leaf fiber is consideredan agricultural waste during the harvesting process. Pineapple leaves are rich in cellulose, which made it applicable in many industrial applications. This study aims to extract and characterize microcellulose from pineapple leaf waste in Kampar district, Riau. Pineapple fibers were isolated by alkalization (5 % NaOH) at 70 ºC for 150 minutes, followed by bleaching treatment(3% H2O2) at 60°C for 60minutes. Microcellulosewascharacterized through various techniques, namely chemical composition analysis, Fourier transform analysis (FTIR), X-ray diffraction (XRD), and thermogravimetric analysis (DT/TGA). The results reveal that the extractedmicrocellulose has significantcellulose content (72.45%) with a crystallinity index of 73.48%. The FTIR spectra of microcellulose indicatethat alkalization and bleaching treatments removed lignin and hemicellulose in varying degrees. Moreover, the extracted microcelluloseshows high thermal stability, the maximum decompositionoccurredat 347 ºC (weight residue 16.37%).Pineappleleaf fiber in Kampar district, Riau, can be a source of microcellulose as a renewable, eco-friendly, and sustainable material for future industrial applications.

Co-Authors Abdul Rahman Adri Adri Andi Putra Andri Andri Anggria, Feldy Anita Susilawati Anuar, Kaspul Aryandi Kusuma Asrian, Angga Awaludin Martin Azis, Azridjal Buma Gempa Skp, Buma Gempa Cupu, Dedi Rosa Putra Dea Musyafiroh Akbar Dedi Rosa P.C1 Dian Oktary Eko Saputra Erwin Ardiansyah Feblil Huda Gunawan, Gilang Harrianda Hudaya Harrianda Hudaya Herisiswanto Herisiswanto Indra Jun Noturas Irdoni HS Latif Kuncoro Wasmi Apris M Dalil Muftil Badri N. Nazaruddin Nazaruddin Nazaruddin Pernando Sihite Pernando Sihite, Pernando Putri Nawangsari Putri Nawangsari Putri Nawangsari Putri Nawangsari, Putri Putri Nawangsari, Putri Nawangsari Rahmadiza, Duta Rahmat Rosandi Rasyad, Abdur Ridwan Abdurrahman Rochman Saefudin Romy Romy Romy Seab Piseth Suyitno Suyitno Syafri Syafri Syafri Viktor Malau Warman Fatra, Warman Yohanes

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