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All Journal Rekayasa Mesin ARIKA Automotive Experiences Journal Mechanical Engineering
Nevada. J. M. Nanulaitta
Jurusan Teknik Mesin, Politeknik Negeri Ambon
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisa Keragaman Nilai Kekerasan Baja St-42 Melalui Proses Karburasi Menggunakan Komposisi BaCO3 Dan Carbon Dengan Variasi Waktu Penahanan Nanse H. Pattiasina; Nevada J.M. Nanulaitta; Steanly R.R. Pattiselanno
ARIKA Vol 5 No 2 (2011)
Publisher : Industrial Engineering Study Program, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (829.025 KB)

Abstract

Pack carburizing is a method of thermo chemical treatment, when carbon dissolved in steel surfaces, revolve 0.3% - 0.9% with temperature between 825 oC - 925 oC, and keep it at several time and then continued with quenching process using water, oil, air or salt. This research had arranged to test the hardness of low carbon steel (ST-42) with 40% of BaCO3, and 60% of Carbon, before and after carburizing process in 3 type of holding time: 15, 30, and 50 minutes. Based on results, the best combination to reach a higher value of hardness provides by combination of after carburizing process and 50 minutes of holding time. Later, an extensive experiment by 2 hours of burning had shown an increase level of hardness up to 365% from the initial condition which proves the quality of this best treatment combination.
Analisis Perbandingan Komposisi Karbon Dan Bubuk Tulang Sapi Dalam Proses Karburasi Padat Untuk Mendapatkan Nilai Kekerasan Tertinggi Pada Baja Karbon S-35 C Nevada J.M. Nanulaitta; Eka R. M. A. P. Lilipaly
ARIKA Vol 5 No 2 (2011)
Publisher : Industrial Engineering Study Program, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (293.536 KB)

Abstract

S-35 C, is a low steel carbon type with 0,30% - 0,35% carbon composition, which has a low hardness. This matter can be overcome by changing the hardness of this steel through heat treatment process. Heat treatment method used in this experiment is pack carburizing method. Experiment results showed that with composition of 500 g of carbon and 0% beef bones with 15 minutes holding time, the hardness number increased as much as 116.90 HRC, there was 20.54 HRC number increased. With 10% of cow bones composition, hardness number became 118.39 HRC and 20.40 HRC number increased. HRC number became 122.20 and increased by 24.38 on 20% composition, and on 30% the hardness value became 130.36 HRC, increased until 32.05 HRC number. 40% composition showed increasing hardness number up to 133.34 HRC, with 35.08 HRC increased. And 50% composition showed 141.29 HRC number, increased until 43.95 HRC. 50% composition produce the highest increase of hardness number, this verified that the higher composition of cow bones makes higher increasing of hardness number in a heat treatment process deliver a harder steel, and also prove that beef bones can be used as a catalyst in pack carburizing process.
Performance and Emissions Analysis of BE85-Gasoline Blends on Spark Ignition Engine Hendry Y. Nanlohy; Helen Riupassa; Marthina Mini; Herman Tjolleng Taba; Basri Katjo; Nevada JM Nanulaitta; Masaki Yamaguchi
Automotive Experiences Vol 5 No 1 (2022)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (771.632 KB) | DOI: 10.31603/ae.6116

Abstract

This study aims to reveal the performance and exhaust emissions of a spark ignition (SI) engine fueled by a gasoline-bioethanol mixture. The main performance characteristics of the SI engine tested are torque, power output; thermal efficiency, brake specific fuel consumption, and brake mean effective pressure. Meanwhile, the exhaust emissions seen are carbon monoxide and hydrocarbons. The test is carried out by comparing the performance of the SI engine under standard conditions without modification with gasoline fuel, with the SI engine with modification with 85% bioethanol fuel. The mass flow of fuel is regulated by modifying the carburetor choke at 3/4 and 7/8. The results show that although slightly lower than gasoline, in general, it can be seen that bioethanol can improve SI engine performance and produce environmentally friendly exhaust emissions.
The Effect of Variation Percentage Alkalization (NaOH) On the Mechanical Properties Analysis and Water Absorption Behaviour in Biocomposite with Cassava Rubber Starch Nevada. J. M. Nanulaitta
Journal Mechanical Engineering Vol. 1 No. 1 (2023): APRIL 2023
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i1.1622

Abstract

Composites made using natural ingredients namely sago fiber and cassava rubber starch as the matrix. This composite making is expected to get good bending strength, impact strength and water absorption rate. Composites are made using the hand lay-up method with a variation of the matrix and the variation of the volume fraction of sago pith fibers is 50%: 50% and 70%: 30% using NaOH liquid and distilled water in the alkali process with a percentage ratio of 0%, 5%, 10%, 15% and 20%. soaking time in NaOH liquid for 120 minutes. The results of this study were found to be the best impact value on composites with 50%: 50% fiber volume variation with 15% alkaline NaOH liquid process, the highest value on the energy absorbed by the composite was 7.5479 (J) with an impact strength of 0.0755 (J/mm2) at a variation of 70%: 30% the highest absorption energy is 5,7430 (J) while the impact strength is 0.0574 (J/ mm2) at 15% NaOH liquid percentage. The highest bending strength is 226.035 MPa at 50%: 50% volume fraction variation with 15% NaOH liquid percentage, 70%: 30% fiber volume fraction variation with the highest value 206,199 MPa at 15% NaOH liquid percentage. The best water absorption rate is at 8 , 82% that occurs in the variation of 50%: 50% fiber volume fraction with 15% percentage of the alkaline process NaOH and 9.16% in the variation of 70% fiber volume fraction: 30% fiber with 15% NaOH liquid in the alkalization process Keywords : Sago Pith Fiber, Cassava Rubber Starch, NaOH, Hand Lay Up Method, Bending Strength, Impact Strength and Water Absorption Rate
Pengaruh Variasi Ketinggian Elektrikal Stik Out Pengelasan Gas Metal Arc Welding (GMAW) Terhadap Sifat Mekanis Pada Pipa Seamless Imam A Hanifah; Nevada. J. M. Nanulaitta; Graciadiana. I. Huka
Journal Mechanical Engineering Vol. 1 No. 2 (2023): AGUSTUS
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i2.1990

Abstract

Welding is a process of joining two or more metal materials together through a local melting process. There are many types of welding, one of which is Gas Metal Arc Welding (GMAW). In gas metal arc welding (GMAW), one of the factors that affect the result of welding is the height of the stick out. The purpose of this study was to determine the effect of changing the height of the stick out in the gas metal arc welding (GMAW) welding process on the pipe on the mechanical strength of the pipe. The method used in this study is a quantitative method with data collection techniques through the library, and the main data sources obtained directly from the research process, and related interviews regarding the tools and materials used at the Ambon State Polytechnic Mechanical Engineering Laboratory. The results of the research that the author did show that the greatest Impact Strength with a value of 0.1136 KJ/mm2 is at a height of 7 mm electrical stick out and 0.0960 KJ/mm2 is at a height of 9 mm electrical stick out, this can be seen in the figure 4.1 and 4.2 where the graph will have a decreasing trend with increasing variations in the height of the electrical stick out in GMAW welding, while for the bending test the shorter the electrical stick out will result in increased welding penetration, so that the melting of the weld material in the welding process is getting deeper and the cooling process is getting deeper time results in increased ductility of the seamless pipe, it also depends on the thickness of the material being welded, the gas flow rate and metal transfer in the weld. Keywords : GMAW Welding, Stick Out, Mechanical Properties, Seamless Pipe, Impact Test, Bending Test
PENGARUH VARIASI KETINGGIAN STICK OUT PENGELASAN GMAW DAN VARIASI SUDUT SAMBUNGAN PADA KAMPUH ½ V BAJA KARBON SEDANG TERHADAP SIFAT MEKANIS Julian Salakory; Graciadiana I. Huka; Nevada J. M. Nanulaitta; Annafiyah Annafiyah; Ratna Ayu Pawestri Kusuma Dewi
Journal Mechanical Engineering Vol. 1 No. 3 (2023): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i3.2095

Abstract

Abstrak Pengelasan merupakan suatu proses penyambungan antara kedua benda logam dengan cara melelehkan atau meleburkan sebagian dari logam tersebut. Salah satu jenis pengelasan yang ada di Indonesia yaitu pengelasan GMAW (Gas Metal Arc Welding). Untuk penggunaan gas pelindung pengelasan GMAW biasanya menggunakan gas Argon sebagai pelindung yang di aplikasikan pada bahan karbon sedang. Penelitian ini dilakukan dengan tujuan untuk mengetahui variasi ketinggian stick out pengelasan GMAW dan variasi sudut kampuh ½ V baja karbon sedang terhadap sifat mekanis. Metode yang digunakan yaitu metode kuantitatif dengan menggunakan data primer yakni pengambilan data pada Lab dan data sekunder berupa studi literature. Berdasarkan hasil penelitian, pengujian impak berada pada ketinggian stick out 10 mm dimana 60° kampuh ½ V memiliki kekuatan tertinggi dengan nilai 0,0920 KJ/mm2 dan kekuatan impak terendah dengan nilai 0,0383 KJ/mm2 pada 45° kampuh ½ V . Sedangkan untuk kekuatan bending tertinggi berada pada ketinggian stick out 5 mm dengan sudut kampuh ½ V 45° sebesar 608,33 MPa dan kekuatan bending terendah sebesar 475,00 Mpa pada sudut kampuh ½ V 60°. Kata Kunci : Pengelasan GMAW, Kekuatan Impak, Kekuatan Bending
Pengaruh Temperature Tempering Terhadap Kekerasan Pada Baja Karbon Sedang Hasil Pengelasan FCAW (Flux-Cored Arc Welding) Clara Sekeroney; Nevada. J.M Nanulaita; Frederick Dematacco; Mohammad Anas Fikri; Ike Dayi Febriana
Journal Mechanical Engineering Vol. 1 No. 3 (2023): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i3.2098

Abstract

Carbon steel is a type of alloy steel consisting of various elements, especially iron (Fe) and carbon (C). In general, the properties of steel are affected by the percentage of carbon and the microstructure of steel which is affected by steel composition and heat treatment. The welding process can change the structure and composition of steel. The safety of weld results can be carried out after welding using a heat treatment process. This tempering aims to obtain better and desired mechanical properties. Tempering is carried out using temperatures of 200⁰C, 250⁰C and 300⁰C with cooling using air media and mechanical testing will be carried out.The results of this research showed that tempering temperature had an effect on the hardness value of medium carbon steel resulting from FCAW welding. The hardness value at a temperature of 200℃ was 54.75, a temperature of 250℃ was 53.00 and a temperature of 300℃ was 52.04. The higher the temperature, the lower the hardness value and conversely, the lower the tempering temperature, the higher the hardness value.Keywords: Welding, Tempering, Hardness
Analisa Pengaruh Waktu Penahanan (Holding Time) Pada Proses Tempering Terhadap Sifat Mekanis Baja Karbon Menengah Hasil Pengelasan Fcaw (Flux Core Arc Welding) Rey Joy Toding Padang; Nevada. J.M Nanulaita; Cley Talkua; Agustinus O. Lopuhaa; Faizatur Rohmah
Journal Mechanical Engineering Vol. 1 No. 3 (2023): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i3.2099

Abstract

FCAW (Flux Core Arc Welding) welding is a type of welding process or joining metal materials that uses a heat source from electrical energy which is converted or converted into heat energy. a roll and uses gas as a protector for the weld metal which melts during the welding process. The content of medium carbon steel is 0.3%C - 0.6%C. This carbon steel has advantages compared to low carbon steel, medium carbon steel has stronger mechanical properties with a higher level of hardness than low carbon steel. . Before and after welding carbon steel materials, material testing will be carried out. With this test, it is hoped that the hardness and bending strength of the material will be known. The method used is a quantitative method including experimental research. With a plate thickness of 5mm, a variation of the V seam angle with an angle of 45° with a depth of 2.5mm. Using a stickout height of 5mm by varying the holding time, namely 30 minutes, 60 minutes, 90 minutes for FCAW welding  Keywords: Carbon steel, FCAW (Flux Core Arc Welding), Holding Time, Hardness Test, Bending Test
PENGARUH VARIASI SUDUT PENGELASAN KAMPUH V DAN KETINGGIAN ELEKTRIKAL STICK OUT PENGELASAN GMAW TERHADAP SIFAT MEKANIS BAJA ST-42 Fredrik Demataco; Nevada. J.M Nanulaita; Lukman Hadiwijaya; Ratna Ayu Pawestri Kusuma Dewi
Journal Mechanical Engineering Vol. 1 No. 3 (2023): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i3.2120

Abstract

GMAW (Gas Metal Arc Welding), which is a solid or tubular welding electrode that is fed continuously mechanically from a roll of electrode wire inside the welding machine. The electrode is fed via a gun or torch by maintaining the height of the arc formed between the tip of the electrode wire and the material being welded or the base metal. GMAW (Gas Metal Arc Welding) is MAG (Metal Active Gas) and MIG (Metal Inert Gas) welding which is very efficient and fast in the process.Low carbon steel contains less than 0.3% carbon in the carbon steel mixture. Low carbon steel cannot be hardened because the carbon content is not enough to form a martensite structure. Welded joints are material or plate joints that are used for the welding process with the aim of getting maximum penetration from the joint.In this research, we are looking at the effect of the GMAW (Gas Metal Arc Welding) welding process with MIG (Metal Inert Gas) type on ST-42 steel by varying the V seam angle with a stick out height of 5 mm on the mechanical properties in the HAZ area.The hardness value before the welding process at an angle of 15 is in the HAZ area of 30.03 HRD for corners 30 and 45 is 32.51 HRD and 33.98 HRD, while for the impact strength at an angle of 15 is 0.2725 J/mm2, an angle of 30  and 45 namely 0.2439 J/mm2 and 0.2320 J/mm2 Keywords: Welding, HAZ (Heat Affected Zone), Impact Strength, Hardness
Pengaruh Variasi Persentase Hardener pada Campuran Clear Coat Terhadap Kekerasan Cat Pada Pengecatan Body Kendaraan Hermon Latumaerissa; Nevada. J.M Nanulaita; Roy R Lekatompessy; Laily Ulfiyah
Journal Mechanical Engineering Vol. 1 No. 3 (2023): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i3.2121

Abstract

Painting is a process of applying paint in liquid form to an object, to create a thin layer which then creates a hard layer or layer of paint. The function of painting itself is to give a layer to an object so that the object's lifespan can be longer. Attachment of paint to the surface can be done in many ways, wiping, smearing, brushing, spraying, dipping or in other ways. Attachment of paint by spraying is the paint attachment that is most often found in automotive painting workshops. Apart from that, attaching paint by spraying is easier in adjusting the area where painting will be carried out, the results are also good if done correctly. The quality of good painting results is influenced by many factors such as skills, materials used, etc., while determining good painting results is based on several factors, such as surface roughness, gloss power, etc. The hardness of the painting results is also greatly influenced by the percentage of hardener mixture in the paint mixture. The paint in question here is color paint (top coat). This research is to determine the best percentage of clearcoat in the painting process by testing the hardness of the painting results. The results obtained by varying the percentage of the mixture in the best clearcoat are in the percentage variations of 100 (Base): 55 (Hardener) + Thiner or Solvent (10% of Base) is 83.49 H, 100 (Base): 55 (Hardener) + Thiner or Solven (10% of Base) is 82.99 H, 100 (Base) : 45 (Hardener) + Thiner or Solven (10% from Base) is 82.51 H and the lowest is the variation 100 (Base): 60 (Hardener) + Thiner or Solvent (10% of Base) namely 79.57 H. Keywords: Painting, Clearcoat, Hardener and Paint hardness
Co-Authors Agustinus O. Lopuhaa Annafiyah Annafiyah Basri Katjo Berthy Pelasula Berthy Pelasula Clara Sekeroney Cley Talkua Erwin B Pattikayhatu Erwin Bravor Pattikayhatu Erwin Patikayhattu F Demmatacco F. Demmatacco Faizatur Rohmah Frederick Dematacco Fredrick Demattacco Fredrik Demataco Graciadiana I Huka Graciadiana I Huka Graciadiana. I. Huka H. S. Latumaerissa Helen Riupassa Hendry de Fretes Hendry Y. Nanlohy Herman Tjolleng Taba Hermon Latumaerissa Hermon. Latumaerissa Huka, Graciadiana I Huka, Graciadiana. I. Ike Dayi Febriana Imam A Hanifah Josef Matheus Josef Matheus Josef Matheus Julian Salakory Kelian, Nur Aisyah Utami Laily Ulfiyah Lasamahu, Stevanno B D Latuconsina, Muhammad Jen Leatemia, Josua M. Leatemia, Meiti Lekatompessy, Roy R. Lilipaly, Eka Rahmat Mahayani Anthonio Putera Loppies, Leslie S. Loppies, Leslie. S. Lukman Hadiwijaya Malakauseya, J. J Marthina Mini Masaki Yamaguchi Matheus, J Meiti Leatemia Mohammad Anas Fikri Muhammad Jen Latuconsina Nanse H. Pattiasina Nur Aisyah Utami Kelian Patikayhattu, Erwin Pattikayhatu, Erwin Bravor Patty, Alexander A. Pelasula, Berthy Picanussa, Jovancko. S. S. R.R Lekatompessy R.R. Lekatompessy Ramadhan, Fahri Ratna Ayu Dewi Ratna Ayu Pawestri Kusuma Dewi Rey Joy Toding Padang Roy R Lekatompessy Rumaday , Gahsar Semuel M.J.S Tuny Steanly R.R. Pattiselanno