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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 Prosiding SNTTM

Dedy Masnur, Dedy

Universitas Riau

Author-ID : 1708500

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry 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.

Optimasi Parameter Pembuatan Sampel Kampas Rem Non-asbestos Organic (NAO) terhadap Kekerasan dan Porositas Menggunakan Metode Taguchi Putri Nawangsari; Dedy Masnur; Herisiswanto Herisiswanto; Indra Jun Noturas
Jurnal Rekayasa Mesin Vol 18, No 2 (2023): Volume 18, Nomor 2, Agustus 2023
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v18i2.4112

Kampas rem Non-asbestos Organic (NAO) mulai dikembangkan karena lebih ramah lingkungan. Pembuatan kampas rem melibatkan banyak parameter proses sehingga membutuhkan eksperimen, waktu, dan biaya yang banyak. Penelitian ini bertujuan mendapatkan parameter yang optimal pada sampel kampas rem NAO terhadap kekerasan dan porositas dengan menggunakan Metode Taguchi. Desain parameter yang digunakan terdiri dari 3 faktor terkontrol (tekanan kompaksi, temperatur postcuring, dan waktu postcuring) masing-masing parameter terdiri dari 3 level (tekanan kompaksi : 3 Ton, 4 Ton, dan 5 Ton; temperatur postcuring: 155 °C, 160 °C, dan 165 °C; waktu postcuring: 6 jam, 8 jam, dan 10 jam). Taguchi Orthogonal Array yang dipilih adalah L9. Pengujian kekerasan sampel dilakukan dengan menggunakan Rockwell skala S dengan mengacu ASTM 785 dan pengujian porositas sampel mengacu pada JIS 4418:1996. Selanjutnya, hasil eksperimen pengujian kekerasan dan porositas dianalisa dengan menggunakan Analysis of Variance (ANOVA). Karakteristis kualitas signal-to-noise (S/N ratio) untuk respon kekerasan dipilih large is better dan respon porositas dipilih smaller is better. Hasil analisis ANOVA dan S/N ratio menunjukkan bahwa tekanan kompaksi memberikan pengaruh yang signifikan terhadap nilai kekerasan dan porositas sampel. Faktor terkontrol tekanan kompaksi 5 Ton, temperatur postcuring 165 °C, dan waktu postcuring 10 jam menunjukkan parameter yang optimal untuk menghasilkan nilai kekerasan dan porositas sampel paling baik. Nilai prediksi kekerasan dan porositas pada parameter optimal yang didesain dengan Metode Taguchi menunjukkan konsisten/sesuai dengan hasil konfirmasi eksperimen dengan 95% confidence interval (CI).

Optimizing of Library Management Based 5S Method (Case Study: Buluh Cina Village, Kampar District, Riau) Masnur, Dedy; Romy; Syafri; Yohanes; Susilawati, Anita; Putra, Andi
Jurnal Pemberdayaan Masyarakat Madani (JPMM) Vol. 7 No. 2 (2023): Jurnal Pemberdayaan Masyarakat Madani (JPMM) (DOAJ & SINTA 3 Indexed)
Publisher : Fakultas Ekonomi dan Bisnis Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JPMM.007.2.05

This community service activity aims to develop and improve library management using the 5S method and computerised system of books inventory to increase community literacy in Buluh Cina Village, Kampar Regency, Riau Province. The optimal and efficient library, such as book collections, library users, facilities, infrastructure, and library management, can be appropriately managed based on the 5S method and book inventory-based computerisation. The 5S method (Seiri, Seiton, Seito, Seiketsu and Shitsuke) was adopted to organise library rooms by arranging bookshelves, catalogue cabinets, reading tables, and other equipment. By applying the 5S method, a more optimal inventory management system and book borrowing were obtained easily. The existence of this system makes it easier for officers to put back the books that have been read in their original place. Replacing books can be done quickly; the librarian only needs to input the book code, book data and shelf locations for storage displayed. The book was inventory-based computerised, which made it more accessible to detect the number of collections, the presence of books on storage shelves, a monitoring system for book borrowers, and additional collections. Therefore, the management and services of the library are optimal and lead to the visitors' satisfaction.

Co-Authors Abdul Rahman Adri Adri Andi Putra Andri Andri Anggria, Feldy Anita Susilawati Anuar, Kaspul Asrian, Angga Awaludin Martin Azis, Azridjal Buma Gempa Skp, Buma Gempa Dea Musyafiroh Akbar Eko Saputra Erwin Ardiansyah Feblil Huda Gunawan, Gilang Harrianda Hudaya Harrianda Hudaya Herisiswanto Herisiswanto Indra Jun Noturas Irdoni HS Kusuma, Aryandi Latif Kuncoro Wasmi Apris M Dalil Muftil Badri Muttaqien, Muhammad Fadhlurrahman ‘Arif N. Nazaruddin N. Nazaruddin Nazaruddin Nazaruddin Oktary, Dian P.C1, Dedi Rosa Patiharauw, Frans Boyce Pernando Sihite Pernando Sihite, Pernando Putra Cupu, Dedi Rosa 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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