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All Journal Majalah Ilmiah MOMENTUM Dinamika Teknik Mesin Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences
Achmad Zainuri
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Religion Arts Humanities Automotive Engineering Economics, Econometrics & Finance Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences

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Analisa Pengaruh Variasi Merek Kampas Rem Tromol Dan Kecepatan Sepeda Motor Honda Supra X125 Terhadap Keausan Kampas Rem Ahmad Multazam; Achmad Zainuri; S. Sujita
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 2, No 2 (2012): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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Abstract

AbstractBrake is one component of a motor vehicle that serves to slow or stop the study aims to determine the value of the wear of each brand of brake drum caused by variations in the speed of the motorcycle Honda Supra X125 on the braking load 6 kg. Brake that is used in this study there are three variations of the brand is a brand HONDA GENUINE PART, ASPIRA, and KOMACHI with variations at 40, 50 and 60 km / h and braking load 6 kg. The research was conducted in two phases, namely the field of testing and measuring brake wear in the lab. Metrology using a profile projector, in addition to the Rockwell hardness testing is also performed to determine the hardness of each brand of brake lining before and after testing higher speeds with the same braking load time, braking distance and the wear rate also increased.From the research results smallest brake lining wear occurs there at a speed of 40 km / h and braking load 6 kg. Genuine Parts for the Honda brand it wear amounted to 1.574 x 10 -5 mm / sec, while the brand Aspira it wear 8.47 x 10 -5 mm / sec and brands Komachi it wear 3.500 x 10 -5 mm / sec. Largest brake wear occurs at a speed of 60 km / h and braking load 6 kg. Genuine Parts for the Honda brand is equal to 2.373 x 10 -5 mm / sec, while the brand Aspira it wear 3.626 x 10 -5 mm / sec and brands Komachi it wear 3.701 x 10 -5 mm / sec. 
Pengaruh Panjang Serat Dan Fraksi Volume Serat Pelepah Kelapa Terhadap Ketangguhan Impact Komposit Polyester Nasmi Herlina Sari; Achmad Zainuri; Fitratul Wahyu
Dinamika Teknik Mesin Vol 1, No 2 (2011): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Composite has alone top to be compared with alternative's tech material any other as strong, demulcent, bate corrosion, economic etcetera.  The aim of this research is to investigate the influence of fiber length and fiber volume composition coconut frond to tensile strength step-up and toughness impact composite is coconut frond fiber with matrix resin   polyester   This research utilizes fiber length variation 2 cm, 4 cm, 6 cm and fiber volume variations 5%, 10%, 15%. composite lasing utilizes resin polyester  composite makings done at random with fiber compare and resin 100%. Fiber conduct is done with soak fiber up to 1 hour with NaOH solution as much 4%. composite makings process by method hand lay up  with emphasis manually utilize glass as printed as and depressing.   That result showed for fiber length 2 cm, 4 cm, and 6 cm gotten by supreme tensile strengths on long fiber 6 cm which is 27.5503216 N/mm2 and tensile strength is contemned available on fiber length 2 cm which is 16.80040936 N/mm2  and on fiber volume 5%,10%, and 15% supreme tensile strengths on volume fiber 15%, which is 28.49020468 N/mm2 and tensile strength is contemned available on volume 5%, which is 16.80040936 N/mm2. Toughness impact  supreme for fiber length 2 cm, 4 cm, and 6 cm happens on fiber length 2 cm with volume variation 10% which is 4087.5 Kj/m2 and on fiber volume 5%,10%, and 15% gotten by toughness impact  supreme available on volume 10% with longing fiber 6 cm which is, 4087. 5 Kj/m2
BENDING AFTER IMPACTKOMPOSIT SANDWICH BERPENGUAT SERAT BAMBU-FIBERGLASS DENGAN COREPOLYURETHANE RIGID FOAM Agus Dwi Catur; S. Sinarep; Paryanto Dwi Setyawan; Achmad Zainuri; S. Supriadi
Dinamika Teknik Mesin Vol 5, No 1 (2015): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Impact of the composite sandwich made of materials that become defect, how defects after impact  in material need to be examined .Is that defected composites and wich still has the strength toremain in use?, then the bending after impact strength testing must be done to answer these questions.Composite sandwich with bamboo fiber-fiber glass reinforcement and with a core of 25mm rigid polyurethane foam sheet was produced. Composite sandwich made with two composite sandwich laminate as skinflanking the core. Laminated composite sandwich in this study varied number of layers of reinforcing fibers and type of fiber. Specimens subjected to drop weight impact with varying energy then defect researched and bending  after impact strengthtested. Defects formed on the composite experiencing a drop weight impact loads are: delamination, basin and through hole. The more layers of reinforcing fibers in the composite skin causing moreshallowbasinformed by theresidualimpact. The greater the impact energy causes greater depth of residual basin. Composite sandwich still has the bending strength after impact. Residual bending strength decreases with increasing impact energy imposed on the composite.
Analisis pemakaian bahan bakar biogas termurnikan pada unjuk kerja motor bakar Rudy Sutanto; Kusuma Wardani; Arif Mulyanto; Nurchayati Nurchayati; Pandri Pandiatmi; Achmad Zainuri; Sinarep Sinarep
Dinamika Teknik Mesin Vol 7, No 1 (2017): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (263.312 KB) | DOI: 10.29303/dtm.v7i1.1

Abstract

The long term purpose of this research is to obtain the high quality renewable biogas that can be used as fuel for internal combustion engines to drive an electricity generator as energy diversification efforts in the area of small sustainable islands. The specific target expected to be achieved is a method/technique for absorbing impurities contained in biogas, especially CO2 component. The study was conducted to reduce the level of CO2 in biogas using NaOH solution. The mass flow rates of biogas employed were 2, 4, 6, 8 and 10 l/min. The biogas was then tested using an engine to see the effect CO2 on the engine performance at several rotations, i.e. 1500, 2500, 3500, and 4500 rpm. The results show that the torque increases by 21.3% for biogas B2 compared to the unpurified biogas. For biogas B4, the torque increases by 19.1%. While for biogas B6, B8, and B10, the torques increase by 14.9%, 12.8%, and 8.5% respectively. For biogas B2, the SFCE decreases by 33.4%, for biogas B4, the SFCE declines of about 22.7%, while for biogas B6, the SFCE declines by 17.9%. The SFCSs also decline by 13.9% and 8.5% for biogas B8 and B10.
PERANCANGAN ALAT PEMINDAH PERAHU ”MODEL DEREK” UNTUK NELAYAN TRADISIONAL PESISIR PANTAI CURAM IGNK Yudhyadi; I Made Suartika; Achmad Zainuri; M. Fajar
Dinamika Teknik Mesin Vol 5, No 1 (2015): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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Abstract

The steep coastal topography makes the traditional fisherman facing a difficulty for moving boat from/to the sea towards the mainland. With the slope of 2 - 3 meters, it required at least 4 people do the job. This situation is very disturbing and reducing the productivity of the fishermen itself. Therefore, it needs a special equipment or appropriate technology to overcomes the drawback situation. So that, it will improve the efficiency and effectiveness of fishing operations. The method used in this study is an applied research method which the tool is designed based on real phenomena. Moreover, the outcome is the design of boat transfer device that will be used as an additional supplement to the teaching material of design and product development, industrial management, as well as a scientific publications. The design expected can improve the steep coastal fishermen productivity and welfare.
PENGARUH JENIS ANYAMAN DAN FRAKSI VOLUME SERAT TERHADAP KEKUATAN BENDING DAN IMPACT KOMPOSIT SERAT RAMI DENGAN MATRIK RESIN POLYESTER Achmad Zainuri; Sinarep Sinarep; Agus Purwoko; Nurkaliwantoro Nurkaliwantoro
JURNAL ILMIAH MOMENTUM Vol 15, No 2 (2019)
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v15i2.3080

Abstract

PENGARUH VARIASI JUMLAH LAPISAN FIBERGLASS DAN ANYAMAN BAMBU TERHADAP KEKUATAN BENDING KOMPOSIT DENGAN METODE VACUUM ASSISTED RESIN INFUSSION (VARI) Achmad Zainuri; Agus Dwi Catur; M. Zazali M. Zazali
JURNAL ILMIAH MOMENTUM Vol 15, No 1 (2019)
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v15i1.2656

Abstract

The objective of this research is to obtain the bending  properties  of  composite  material  produced  by VARI method, and to get analysis of polyester resin distribution time on the layer of fiberglass  composite and bamboo woven strip.The process of making composites varies, but the process of making this research is the process of Vacuum Assisted Resin Infusion (VARI). In the VARI process, dry fiber is placed between the fixmold and plactic bag, then the  resin  is injected  after  the chamber  inside the  low- pressure plastic bag and the process continues until all parts of the fiber are wetted by the resin.From the results of research, testing and discussion of bending test results that have been done then can be drawn conclusions include: Variation of the number of reinforcement layer on VARI method will affect the value of bending strength of composite. By using the VARI  method  The  highest  average  value  of  bending stress  occurs  in  variation  4  (206,69  MPa),  while  the lowest occurs in variation 1 (42,83 MPa), and the time required for the distribution of resin varies in time variation 1 which takes 5 minutes 02 seconds, while for variation 4 takes 8 minutes 3 seconds.Keywords: composites, VARI method, glass fiber, bending test
PENGARUH TAHAPAN PROSES PELUBANGAN DAN ARAH SERAT TERHADAP KEKUATAN TARIK MATERIAL KOMPOSIT POLYESTER-PANDAN WANGI Heri Sunardi; Achmad Zainuri; Agus Dwi Catur
Dinamika Teknik Mesin Vol 3, No 1 (2013): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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Abstract

   Almost all components, both metallic and non-metallic, experience the process of splicing (joining) with other components. Metal components can be welded, bolted and riveted. However, a special non metal materials such as composites, joining can not be done by welding. One type of connection is suitable for composite materials and keeling bolt connection.             The purpose of this study was to investigate the influence of the stage of making a hole with drilling machine and a variation of the fiber direction tensile strength of fiber-reinforced composite material with at pandan wangi polyester matrix. On stage perforation process conducted by three stages with the first stage (diameter 2, then continued with a diameter of 4 and 6 mm), stage II (diameter of 4 and then continued with a diameter of 6 mm), and stage III (diameter 6 mm). And for a variety of fiber direction using random fiber direction, the direction, and woven with 30% fiber volume fraction.              The results of this study showed an increase in tensile strength composite material fiber reinforced polyester-pandan wangi with unidirectional fiber orientation, which contained the highest tensile strength of the composite stage I in the amount of 27.20 MPa and a tensile strength composite lowest was at stage III amounting 13:00 MPa. In a composite material with random fiber orientation tensile strength decreased by 19.93% with the highest tensile strength found in stage I in the amount of 17.90 MPa and the lowest tensile strength found in stage III at 8:00 MPa. And the orientation of the woven fiber tensile strength decreased by 51.09% with the highest tensile strength is found in the first stage of 17:30 MPa and the lowest tensile strength found in stage III at 6.80 MPa.
Development Of Interactive E-Modules for Engineering Aspect Workshop Lessons Household Electrical Installation Material Achmad Zainuri; Iskandar Wiryokusumo; Ibut Priono Leksono
Budapest International Research and Critics Institute-Journal (BIRCI-Journal) Vol 5, No 2 (2022): Budapest International Research and Critics Institute May
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birci.v5i2.5002

Abstract

The existence of teaching materials is important in supporting an effective learning process. For this reason, this study aims to develop an interactive E-Module for engineering subjects in the engineering aspects of household electrical installations. Specifically, this study aims to identify the validity of the developed E-Model and determine student responses to the E-Module. This study follows an interactive multimedia development model with stages that include analysis, design, development, evaluation, and implementation. Research data were collected using observation sheets and questionnaires. The results of this study indicate that the developed E-Module is proven valid from the validity test results from design experts, media experts, and materials experts. The students' responses at the trial stage of the limited test, small group, and large group also showed that the developed E-Module received positive responses from students regarding material content, convenience, and message clarity. The results of this study are described in this article using the latest theory and empirical data related to the development and use of E-Modules in learning.
Analisis Variasi Jarak Sumbu Poros Terhadap Tegangan Kontak Dan Tegangan Bending Pada Helical Gear Pair Berdasarkan Metode Elemen Hingga Sopyan Ali Rohman; IDK Okariawan; Achmad Zainuri
Dinamika Teknik Mesin Vol 2, No 2 (2012): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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Abstract

This researchs object is determining  the effect of modifying center distance to bending stress and contact stress on the helical gear pair based on the finite element method. And to know the safety factor on each center distance variation within helical gear pair.Gear being analyzed is one of the gears on Honda motor cycles branded Beat. To know the specification of gear, the helical gear geometry measurements were taken. Based on the results of measurements was carried out models of helical gear pair by AUTO CAD software. Then,  bending stress and contact stress analysis with finite element method on  ANSYS 12.1. Optimal center distance of gear pairs is determined by safety factors on the quasi statatis condition.From the research results can be concluded that the change of center distance can affect the bending stress and contact stress on gears and affect of security design. A safe center distance variation is 52.65 mm, 52,75 mm, 52,85mm and 52.95 mm.
Co-Authors Agus Dwi Catur Agus Dwi Catur Agus Purwoko Ahmad Multazam Arif Mulyanto Fitratul Wahyu Heri Sunardi I Made Suartika I.D.K. Okariawan IGNK Yudhyadi Iskandar Wiryokusumo Kusuma Wardani Leksono, Ibut Priono M. Fajar M. Zazali M. Zazali Nasmi Herlina Sari Nurkaliwantoro Nurkaliwantoro Pandri Pandiatmi Paryanto Dwi Setyawan Rudy Sutanto S. Sinarep S. Supriadi Sinarep Sinarep Sopyan Ali Rohman Sujita, Sujita