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All Journal Mechatronics, Electrical Power, and Vehicular Technology Jurnal Bahan Alam Terbarukan Majalah Ilmiah MOMENTUM AJIE (Asian Journal of Innovation and Entrepreneurship) OPERATION EXCELLENCE: Journal of Applied Industrial Engineering Jurnal Rekayasa Mesin Mechanical Engineering for Society and Industry jes
Siregar, Januar Parlaungan
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Formulation and Evaluation of Face Moisturizing Cream from Katuk Leaf Extract (Sauropus Androgynus Merr) Siallagan, Johnson; Kano, Christina Paulina; Yabansabra, Yuliana Ruth; Pramesti, Santinia Andiva; Fitriyana, Deni Fajar; Siregar, Januar Parlaungan; Cionita, Tezara; Guterres, Natalino Fonseca Da Silva
Jurnal Bahan Alam Terbarukan Vol 13, No 1 (2024): June 2024 [Nationally Accredited Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v13i1.50297

Abstract

The Katuk plant (Sauropus androgynus L. Merr) is a natural substance with proven efficacy in treating diabetes, obesity, and inflammation. It also possesses antioxidant, lactation-inducing, and antibacterial properties. This study aimed to investigate the impact of varying concentrations of katuk leaf extract on characteristics of the moisturizer cream produced. The study involved extracting katuk leaves using the maceration method for 24 hours, utilizing ethanol as the solvent. The extraction process resulted in a yield of 1.86%. The final yield contains alkaloid chemicals, flavonoids, terpenoids, saponins, and tannins. The formulations employed in this investigation utilized the codes F0, F1, F2, and F3, representing the content of katuk leaf extract at 0%, 2%, 4%, and 6%, respectively. The cream generated exhibited an identifiable aroma of katuk and had a hue ranging from light green to blackish brown, as determined by organoleptic testing. The pH values of specimens F0, F1, F2, and F3 were 7, 7, 7, and 8, respectively. The spread ability measurements for specimens F0, F1, F2, and F3 were 5.3 cm, 5.5 cm, 6 cm, and 6.1 cm, respectively. According to the findings of this investigation, specimens F0, F1, F2, and F3 adhered for 5 seconds, 4 seconds, 4 seconds, and 5 seconds, respectively. The formulation F2 is the most superior product generated in this investigation. This is because this specimen exhibits the highest level of respondent satisfaction compared to the other specimens. This formulation exhibits antioxidant activity with a per cent inhibition of 30.51% and an IC50 value of 84.63 ppm. The face moisturizing cream derived from katuk leaf extract possesses a high antioxidant potency, placing it in the active/strong category.
Pengaruh Fraksi Volume Sekam Padi, Aluminium Oksida dan Besi Oksida Terhadap Sifat Mekanik Kampas Rem dengan Matriks Epoxy Fitriyana, Deni Fajar; Widodo, Rahmat Doni; Kriswanto, Kriswanto; Athoillah, Ahmad; Prasetyo, Ares Yudi; Alrasyid, Mochamad Dzaki; Aripin, Muhammad Bustanul; Dimyati, Saeful; Irawan, Agustinus Purna; Cionita, Tezara; Siregar, Januar Parlaungan
JURNAL ILMIAH MOMENTUM Vol 19, No 2 (2023)
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v19i2.8752

Abstract

Penelitian tentang material alam sebagai pengganti material asbes dalam komposit material gesek kampas rem motor terus mengalami peningkatan. Material dalam kategori biomassa sebagai reinforcement komposit agar mendapatkan karakteristik material yang sesuai standar material gesek kampas rem motor. Penelitian ini bertujuan untuk mengetahui pengaruh fraksi volume sekam padi, aluminium oksida, dan besi oksida terhadap sifat mekanik dari spesimen komposit material gesek kampas rem. Proses pembuatan spesimen menggunakan metode hand lay-up dengan fraksi volume material epoksi (100 wt% dan 50 wt%), sekam padi (0 wt% dan 20 wt%), aluminium oksida (25 wt% dan 15 wt%), dan besi oksida (25 wt% dan 15 wt%). Pada penelitian ini, didapatkan pengaruh fraksi volume sekam padi, aluminium oksida, dan besi oksida terhadap sifat mekanik dari spesimen komposit material gesek kampas rem motor yaitu dapat meningkatkan nilai dari masing-masing hasil pengujian. Sehingga, dapat disimpulkan bahwa penggunaan material epoksi 50 wt%, sekam padi 20 wt%, aluminium oksida 15 wt%, dan besi oksida 15 wt% membuat ikatan antar partikel spesimen komposit material gesek kampas rem motor semakin baik dikarenakan kandungan silikanya yang tinggi. Oleh karena itu, didapatkan spesimen komposit material gesek kampas rem sepeda motor dengan sifat mekanik yang baik sesuai standar SNI nomor 09-0143-1987 dan SAE J661-1997.
Effect of Firring Heating Rate on the Density, Porosity, Vickers Hardness and Microstructure of the Crucible Specimens Rusiyanto, R.; Meiartha, REGA; Fitriyana, Deni Fajar; Sudiyono, S.; setiadi, rizki; Siregar, Januar Parlaungan; Ansori, CHUSNI
JURNAL ILMIAH MOMENTUM Vol 20, No 1 (2024)
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v20i1.10306

Abstract

Failure in the results of making the crucible is cracking and even deformation. Cracks that occur can cause fluid leakage when melting so that it disrupts the casting process. The quality of the crucible can be influenced by factors including the selection of constituent materials, particle size, the amount of pressure, and the length of the firring process of heat treatment and cooling in the furnace. This study aims to determine the effect of heating rate on crucible made from clay and kaolin and molasses as a binder. With the treatment of different heating rates in the firring process, namely 3 ℃ / min, 4 ℃ / min, 5 ℃ / min, 6 ℃ / min, and 7 ℃ / min.  The composition of the materials used is 40% clay, 40% kaolin, and 5% molasses and 15% water as the total mass. The process of making specimens begins with crushing clay, sieving clay 100 mesh. Mixing process using twin screw extruder machine repeatedly for 45 minutes. Molded cylindrical size 20 x 20 mm, free air drying for 8 days, firring process at 1000 ℃ holding time 1 hour. The results showed that the difference in heating rate did not affect the change in chemical elements but the best heating rate was at 3℃/min showing a denser morphology, density value of 1.62 g/cm3, porosity value of 23%, and Vickers hardness value of 20.43 HVN.
Effect of Maleic Anhydride Polypropylene on Flexural Properties of Hybrid Kenaf - Sugar Palm Fibre Reinforced Polypropylene Composites Bachtiar, Dandi; Siregar, Januar Parlaungan; Iqbal, Mohd; Masri; Zulfadhli; Muhibbuddin
Journal of Engineering and Science Vol. 2 No. 2 (2023): July-December 2023
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v2i2.169

Abstract

This study was focused on the characterize the hibridisation of kenaf and sugar palm fibre in reinforcing the polypropylene matrix. Addition of MAPP (Maleic Anhydride Polypropylene) was used as compatibilizing agent with variation of 2%, 3% and 5%. The specimen materials were prepared with 30% amounts of fibres while the ratios between kenaf and sugar palm fibre are 10:20, 15:15 and 20:10. The composites were fabricated using melt mixer technique and followed by compression molding process. The specimens were cut according ASTM Standard D790 for conducting the flexural testing. After testing done, the results shown that flexural strength of composites tend to decreased when the content of MAPP increased. The ultimate flexural strength was attained at 2% MAPP addition of the hybrid composites with 20% kenaf fibres. Among the composites with different ratios, the hybrid composites that contain more kenaf fibres exhibit the higher value in flexural strength than the composites that contain more sugar palm fibres.
Fatigue Analysis on Hybrid Sugar Palm-Kenaf Fibre Reinforced Polypropylene Composites Bachtiar, Dandi; Siregar, Januar Parlaungan; Zulfadhli; Masri; Arhami; Siregar, Ramdhan Halid; Jalil, Saifuddin Muhammad
Journal of Engineering and Science Vol. 3 No. 1 (2024): January-June 2024
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v3i1.209

Abstract

ABSTRACT Hybrid natural-natural fibre reinforced polymer composites become attractive alternative to seek the friendly-environmentally materials. Study on the durability level of the hybrid composites have the importance reason due to the role in application as structural function. This study focuses on examining the fatigue strength of polypropylene polymer composites reinforced with hybrid sugar palm-kenaf fibres. The hybrid composite materials were prepared by mixing the fibres and matrix with several compositions. There are five composition types of specimens that evaluated, such as 70:10:10, 70:15:15, 70:20:10, 80:10:10 and 90:5:5. The hybrid composites were composed by PP, sugar palm fibre and kenaf fibre. Furtheremore the tensile test were conducted to find the value of ultimate tensile strength for every specimens of hybrid composites. The fatigue test also were conducted with four level of stress i.e. 80%, 70%, 60% and 50%. The results show that in the lower level of stress, the hybrid composites with higher content of sugar palm fibre posses the better performance of fatigue life compare to the others
Opportunities and challenges in the sustainable integration of natural fibers and particles in friction materials for eco-friendly brake pads Imran, Al Ichlas; Siregar, Januar Parlaungan; Mat Rejab, Mohd Ruzaimi; Cionita, Tezara; Hadi, Agung Efriyo; Jaafar, Jamiluddin; Fitriyana, Deni Fajar; Dewi, Rozanna
Mechanical Engineering for Society and Industry Vol 4 No 3 (2024): Special Issue on Technology Update 2024
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12271

Abstract

The high concentration of metallic components in the pad composite improves breaking ability at elevated temperatures and frequencies, bolstering the automobile's braking system. The brake pad operates through friction mechanisms, generating PM 10 and PM 2.5 particulate matter that is emitted into the atmosphere, adversely affecting the well-being of humans and animals. Therefore, eco-friendly materials like natural fiber and organic particles are being used as substitutes for the metal in brake pads. However, natural fibers and particles exhibit unique characteristics when interacting with other materials, presenting significant challenges in brake pad composites such as variations in physical properties, limited thermal resistance, and potential degradation at high temperatures and humid environments. These aspects play a crucial role and can affect the structural strength, wear resistance, and overall performance of composite brake pads, especially when operating under extreme braking conditions. This paper review critically discusses automotive braking systems, the benefits of non-natural fiber brake pads, the process of particle emission formation, the components and manufacturing factors of composite brake pads, and the environmentally friendly qualities of brake pads. This study provides an exciting opportunity to advance our knowledge of the presence of natural fibers and organic particles in composite brake pads, which greatly improves the performance of automotive brake systems because they have super physical and mechanical properties, as well as great tribological and thermal endurance. Moreover, eco-friendly brake pads are typically biodegradable, which helps reduce ecological damage, minimize health concerns for humans and animals, and promote a sustainable automobile sector. Furthermore, eco-friendly brake pads show great potential for further advancement in reducing pollutant emissions and enhancing performance.
Advancements in sustainable material development: A Comprehensive review of coir fiber and its composites Imran, Al Ichlas; Siregar, Januar Parlaungan; Cionita, Tezara; Hadi, Agung Efriyo; Setiyo, Muji; Mat Rejab, Mohd. Ruzaimi; Jaafar, Jamiluddin; Fitriyana, Deni Fajar; Dewi, Rozanna
Mechanical Engineering for Society and Industry Vol 4 No 3 (2024): Special Issue on Technology Update 2024
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12556

Abstract

Derived from Coir coconut waste, coir fiber offers an environmentally friendly response to ecological challenges in various industries. Its application aligns with achieving Sustainable Development Goals (SDGs), such as eliminating extreme poverty, ensuring food security, and promoting decent employment and economic expansion. It also fosters environmentally friendly consumption and production, mitigates global warming, and conserves biodiversity. The study involves a comprehensive review of current literature, examining the methodologies including extraction techniques, surface modifications, and manufacturing processes like hand layup, casting, compression molding, hot pressing, and injection molding. The analysis identifies key improvements in mechanical, thermal, and physical properties of coir fiber composites, particularly enhanced tensile strength, thermal stability, and reduced water absorption due to chemical treatments. This confirms previous findings and contributes toward enhancing our understanding that coir fiber is extensively utilized in multiple industries, including housing, construction, transportation, biomedical, wrapping, electrical power, communication technology, biofuel, and bioenergy due to their natural abundance, affordability, ease of shaping, superior durability, and eco-friendly characteristics. Another crucial practical implication is that coir fiber and its composites offer numerous advantages that have significant consequences for the development of coir fiber in various fields.
Reducing reject cotter valve skyrocketing cylinder head parts in retainer Press Machine Process in the automotive industry Rosyidi, Edwar; Wibisono, Aprianto; Setiawan, Rohmat; Sugihartanti, Noviani Putri; Siregar, Januar Parlaungan; Pratama, Hafiidz Satria
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.131

Abstract

The automotive industry is an automotive company that produces various types of motorcycles, such as automatic, sport and cub. One of the processes is machining. This process is very important because quality is highly considered. In the machining process, the products produced are crankcase R, crankcase L, cylinder comp, cylinder head, crankshaft. Based on initial observations, this process found reject goods. In the cylinder head line machining area, especially the retainer press machine, there is a problem of reject cotter valve soaring and resulting in the repair process. This will have an impact on the addition of time to repair and product quality is reduced. PT XYZ is facing a problem with cotter valve soaring on the cylinder head product with daily report data for the last 3 months, the percentage of cotter valve soaring problems reaching 1.5% exceeding the maximum defect target of 0.5%. This study aims to reduce the level of reject cotter valve soaring during the retainer press machine pressing process. The method used is eight steps. One solution is to modify the punch size to adjust the urethane punch to work optimally. This process will have an impact on reducing the number of rejects. In addition, this repair also does not cause a repair process on the cylinder head part. The results of this study are very significant with the reduction in cotter cases soaring to 0.2%
Fatigue Performance of Sugar Palm Fibre-Reinforced Thermoplastic Polyurethane Composites with Varying Fibre Content Bachtiar, Dandi; Siregar, Januar Parlaungan; Suhaeri; Masri; Zulfadhli
Journal of Engineering and Science Vol. 4 No. 1 (2025): June
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v4i1.267

Abstract

This study investigates the fatigue behavior of sugar palm fibre (SPF)-reinforced thermoplastic polyurethane (TPU) composites with varying fibre contents (10 wt%, 20 wt%, and 30 wt%). The composites were fabricated using extrusion followed by hot press moulding. Tensile tests were conducted in accordance with ASTM D638 to determine the ultimate tensile strength (UTS), and fatigue tests were performed under stress levels of 80%, 70%, 60%, and 50% of the UTS, following ASTM D7791. The results indicate that an increase in fibre content leads to a reduction in both tensile strength and fatigue life, likely due to poor interfacial bonding and fibre agglomeration. Fatigue life was found to be significantly higher at lower stress levels across all fibre contents. These findings provide valuable information about the potential and limitations of SPF/TPU composites for applications involving cyclic loading, particularly in lightweight and sustainable material applications
Optimizing bioethanol from sago dregs for Honai burner stoves: A case study in Papua Numberi, Johni Jonatan; Uniplaita, Tiper Korneles Muwarberto; Suwandi, Agri; Siregar, Januar Parlaungan; Ekayuliana, Arifia; Joni, Joni; Palamba, Pither; Liga, Marthen
Journal of Mechatronics, Electrical Power, and Vehicular Technology Vol 16, No 1 (2025)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/j.mev.2025.1053

Abstract

Indonesia harbors considerable prospects for bioethanol fuel generation. Underscoring the imperative for establishing optimal fuel concentrations and appropriate burners to facilitate sustainable energy alternatives; this study endeavored to identify the optimal bioethanol concentration sourced from sago waste for application in Honai burners, evaluating the resultant flame output for domestic energy in Papuan custom houses. This analysis adopted an integration of pre-experimental frameworks along with experimental ones. In the early trial stage, concentrations of bioethanol were thoroughly examined concerning low heat value (LHV), specific gravity, viscosity, gas chromatography, and Fourier transform infrared (FTIR) analysis to identify the best fuel characteristics. Following this, the experimental phase assessed flame characteristics, encompassing temperature, fuel mass flow rate, and emissions from combustion gases within the Honai burner. Pre-experimental findings suggest that an 80 % bioethanol concentration is ideal for the Honai burner, displaying a viscosity of 1.03 cP, a density of 0.82 g·L⁻¹, a gas chromatography content of 61.04 %, an LHV of 16.166 MJ/kg, and a heat release rate of 140 kW·m⁻². The experimental phase indicates that a 14-hole burner oriented at a 45° angle yields optimal performance, achieving stable flame temperatures between 480 °C and 750 °C with a fuel flow rate of 60 mL·min⁻¹. Analysis of combustion gases indicates minimal emissions, with carbon monoxide (CO) registering at 0.01 %, carbon dioxide (CO₂) at 0.2 %, and hydrocarbons (HC) at 27 ppm. In summary, this study offers a feasible approach to addressing energy challenges, meeting demand, enhancing accessibility, ensuring availability, and promoting regional energy autonomy for Papuan households in remote locales through the utilization of bioethanol derived from sago dregs in Honai burner cooking devices.
Co-Authors Admoko, Mohammad Rizky Djati Agustinus Purna Irawan Ahmad Athoillah Akhmad Fauzi Aldias Bahatmaka Alrasyid, Mochamad Dzaki ARHAMI Aripin, Muhammad Bustanul Bachtiar, Dandi Chusni Ansori Cionita, Tezara Dimyati, Saeful Ekayuliana, Arifia Fitriyana, Deni Fajar Gunawan Refiadi, Gunawan Guterres, Natalino Fonseca Da Silva Hadi, Agung Efriyo Iis Siti Aisyah Imran, Al Ichlas Iqbal, Mohd Jamiluddin, Jamiluddin JOHNSON SIALLAGAN Joni Kano, Christina Paulina Kriswanto Kriswanto, Kriswanto Manalu, Janviter Marthen Liga Masri Mat Rejab, Mohd Ruzaimi Mat Rejab, Mohd. Ruzaimi Meiartha, REGA Muhammad Khafidh Muhibbuddin Muji Setiyo Pither Palamba Pramesti, Santinia Andiva Prasetyo, Ares Yudi Pratama, Hafiidz Satria Puspitasari, Windy Desti Ramdhan Halid Siregar Rosyidi, Edwar Rozanna Dewi Rusiyanto, R. Saifuddin Muhammad Jalil Samsudin Anis Setiadi, Rizki Setiawan, Rohmat Sudiyono, S. Sugihartanti, Noviani Putri Suhaeri Uniplaita, Tiper Korneles Muwarberto Wibisono, Aprianto Wibowo, Muhammad Errizky Yabansabra, Yuliana Ruth Zulfadhli