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All Journal IPTEK The Journal for Technology and Science Prosiding Semnastek JTT (Jurnal Teknologi Terpadu) Turbo : Jurnal Program Studi Teknik Mesin Machine : Jurnal Teknik Mesin Martabe : Jurnal Pengabdian Kepada Masyarakat Manutech : Jurnal Teknologi Manufaktur Jurnal Teknik Mesin Indonesia Budimas : Jurnal Pengabdian Masyarakat International Journal of Educational Review, Law And Social Sciences (IJERLAS) International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) Jurnal Teknologi Dulang: Jurnal Pengabdian Kepada Masyarakat Prosiding Seminar Nasional Inovasi Teknologi Terapan Jurnal Inovasi Teknologi Terapan International Journal Of Synergi In Law, Criminal And Justice
Robert Napitupulu
Politeknik Manufaktur Negeri Bangka Belitung
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Pengaruh Sudut Part Build Orientation Z-Direction Terhadap Kuat Tarik Spesimen Uji Standar Astm D638 Type IV Menggunakan Filamen Pla+ Pristiansyah, Pristiansyah; Yuliyanto, Yuliyanto; Masdani, Masdani; Sirwansyah Suzen, Zaldy; Kurniawan, Zaldy; Sugianto, Sugianto; Hasdiansah, Hasdiansah; Feriadi, Indra; Pranata, Yogi; Napitupulu, Robert; Harwadi, Harwadi
Manutech : Jurnal Teknologi Manufaktur Vol. 15 No. 02 (2023): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/manutech.v15i02.279

Abstract

This study will try to investigate variations in the angle of the Z-direction build part by using a 3D Printer with Fused Deposition Modeling (FDM) technology made from PLA + Sugoi. This study uses a 0.4mm nozzle with a Bowden type extruder. This study uses a PLA+ filament from the Sugoi brand with a nozzle of 0.4 mm, diameter filament 1,75 mm, 3D Printer with Fused Deposition Modeling (FDM) technology used is Creality Ender 3 V2 with process parameter settings in slicing software using a layer thickness of 0.30 mm, Top solid Layer 5, Bottom Solid Layer 5, Fill density 100%, cooling speed 100%, and flowrate 100%, nozzle temperature 205°C, and bed temperature 60°C. Variation in angle Part build Z-direction is proven to have a significant difference in Tensile strength with a difference of 10° resulting in a difference in Tensile strength of 15 MPa, where the highest tensile strength is 67.50 MPa with part build Z-direction at an angle of 80°, and the lowest tensile strength of 52.50 MPa with a Z-direction part build angle at an angle of 70°.
Uji Koefesien Absorbsi Suara Serat Resam Dengan Matrik Polyester Sebagai Bahan Alternatif Peredam Suara Napitupulu, Robert; Zakaria, Zakaria; Pranandita, Nanda
Manutech : Jurnal Teknologi Manufaktur Vol. 16 No. 01 (2024): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/manutech.v16i01.326

Abstract

Silencer is a tool to reduce the intensity of sound that occurs. Many have developed natural fibre-reinforced composite materials as an alternative to silencers, as they are considered more environmentally friendly than synthetic fibres and relatively cheaper. Resam plants are found in the Bangka Belitung area so that the availability is quite abundant. The purpose of this research is to test the sound absorption coefficient of resam fibre with polyester matrix as an alternative material for soundproofing. Making specimens using the hand lay-up method and research design using the full factorial method. The process variables used were volume fraction of 5%:95%, 10%:90%, 15%:85% and NaOH soaking time of 60, 90, 120 minutes and testing frequency of 500 Hz and 1000Hz. Based on the test results, the highest sound absorption coefficient was obtained in the variation of volume fraction of 15%: 85% volume fraction variation and the immersion time of NaOH solution for 90 minutes at a frequency of 500 Hz was 0.375. While the lowest sound absorption coefficient value in the variation of 5% volume fraction: 95% and the immersion time of NaOH solution for 90 minutes at a frequency of 1000 Hz was 0.16. Based on ISO 11654, the results obtained from this study, resam fibre filler composites can be used as an alternative sound absorbing material because it has exceeded the minimum value of 0.15.
Pengaruh Perendaman Cairan NaOH dan Volume Serat Terhadap Pengujian Impak Serat Gambas Irawan, Rizki; Napitupulu, Robert; Sirwansyah Suzen, Zaldy
Manutech : Jurnal Teknologi Manufaktur Vol. 16 No. 01 (2024): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/manutech.v16i01.329

Abstract

The use of  fiber composites derived from nature whose properties are no less than synthetic fibers and environmentally friendly has been widely studied. Closely natural gambas plants are  found in Indonesia but are still little studied as composites. The aim of this study is to determine the effect of immersion of 3% and 5% NaOH liquids with fiber volume fractions of 20%, 30% and 40% within 2 hours soaking time on gambas fibers. Thes pecimen made uses  the hand lay-up method combined with the full faktorial method with 2  factors and 3 levels in the first factor and then 2 levels in the second factor which is carried out 3 repetitions, so that 18 data  are obtained.  From the study, the highest test result impact strength value was 0.00493 J / mm2 at a volume fraction of 40% with immersion of 3% NaOH liquid. This means that the influence of the higher the fiber volume fraction, the better the composite impact strength. While the lowest result is found in the voume fraction of 20% with 3% NaOH, which is 0.00173 J / mm2. Based on previous research, the results of this impact test still cannot be used as a substitute for SNI helmet manufacturing materials which have an impact strength value of 0.00972 J / mm2.
Komposit Berpenguat Serat Resam Dengan Matrik Polyester Sebagai Bahan Alternatif Peredam Suara Zakaria, Zakaria; Napitupulu, Robert; Pranandita, Nanda
Jurnal Teknologi Vol 24, No 1 (2024): April 2024
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v24i1.4980

Abstract

Resam is a type of fern or fern that usually grows in shady and humid areas. This plant has not been used as a raw material for making sound absorbers, even though resam is found in the Bangka Belitung Islands Province area so that the raw material is easy to obtain. The purpose of this research is to determine composites with resam fibre reinforcement as an alternative soundproofing material. Making sampels using hand lay-up method and research design using full factorial method. The process variables in this study are the volume fraction of 5%: 95%, 10%: 90%, 15%: 85% and the length of NaOH immersion for 60, 90, 120 minutes and the testing frequency of 125Hz, 500 Hz, and 4000Hz. Based on the results of this study, the highest overall frequency sound absorption coefficient was obtained in sample no. 6, with a volume fraction of fibre and matrix of 15% : 85% and 90 minutes of NaOH immersion of α = 0.243. While the lowest overall frequency sound absorption coefficient value is in sample no 3, with a volume fraction of fibre and matrix of 15% : 85% and 60 minutes of NaOH immersion of α = 0.193. So the composite with resam fibre reinforcement based on ISO 11654 can be used as an alternative sound absorbing material.
MESIN PENGADUK ADONAN UNTUK MENINGKATKAN PRODUKSI AMPIANG DAN KRIPIK CUMI PADA MITRA DI KOTA PANGKALPINANG Yuliyanto, Yuliyanto; Subhan, Muhammad; Napitupulu, Robert; Arliansyah, Arul
Jurnal Pengabdian Masyarakat Polmanbabel Vol. 4 No. 01 (2024): DULANG : Jurnal Pengabdian Kepada Masyarakat
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/dulang.v4i01.321

Abstract

The aim of the Community Service Program for partners in the group making Ampiang and squid chips in Selindung Lama Village, Gabek District, Pangkalpinang City is to increase production capacity and quality and improve the partner business management system. The survey results showed that there were problems in the dough mixing production process carried out by partners who still used manual methods. As a result, partners' production capabilities are limited. Apart from that, in terms of business management, existing partners are still not optimal. The partner's average kneading capacity is 2-3 kg in 35 minutes. From the results of the discussion, improvements were made to the production system by providing dough mixing machines and marketing management training. Creating alternative concepts based on data from literature studies, interviews with partners. The alternative concept chosen as the machine design was assessed based on the results of discussions with partners looking at the aspects of frame dimensions, machine height, stirrer dimensions, motor power used, machine plate size used. The production process is carried out in the Bangka Belitung State Polytechnic Manufacturing Mechanic workshop (Polman Babel). The manufacture and procurement of Dough Mixer machines for partners has been realized well and has been provided directly to partners. The capacity of this kneading machine is 5 kg for one process. With a time of 7 minutes to 10 minutes and this machine can be used by partners for production activities for making Ampiang and kritcu, especially in the dough mixing process, partners have been able to increase the productivity of Ampiang and Kritcu through the application of appropriate technology machines In order to increase production capacity from previous production capacity by up to 100% and increase added value for partners.
PKM MESIN PENGIRIS BAWANG UNTUK USAHA BAWANG GORENG DESA KARYA MAKMUR KABUPATEN BANGKA Husman, Husman; Idiar, Idiar; Napitupulu, Robert; Fadhlurrahman, Miftah; Akbar, Muhammad; Haikal ikhsan, Muhammad
Jurnal Pengabdian Masyarakat Polmanbabel Vol. 4 No. 02 (2024): DULANG : Jurnal Pengabdian Kepada Masyarakat
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/dulang.v4i02.353

Abstract

Fried onions made from shallots are an important type of horticultural crop and are very often used by the public. The process of making fried onions is carried out in several stages until it becomes fried onions that are ready to be consumed, starting from peeling the onion skin, slicing, frying, draining and packing. From the results of a survey conducted on partners, the process of slicing onions is still done manually using a slicing tool made of wood. Mrs. Yuliana, who currently produces fried onions, reaches 10 kg/day for Monday - Thursday, and Friday - Sunday 15-20 kg/day, and for religious holidays usually the capacity produced can reach 60 kg/day, with a total on average 500 kg per month, you have to replace the slicer every 4 months. The tool currently used to slice onions has a capacity of 10 kg/hour, so it requires more energy and time for the slicing process. In order to increase the production of shallots and produce slices as is done today, a shallot slicing machine was developed with a slicing system similar to the tool used. Partners receive appropriate technology in the form of shallot slicing machines and training on the process of using the machine and maintaining the machine. Apart from that, a monitoring and evaluation process is also carried out to measure the level of success and obstacles to the machines used by partners. After developing a red onion slicing machine, partner production productivity increased, the machine can function well and is capable of peeling 2.5 kg of red onion skin in 4 minutes in one process or 37.5 kg/hour.
Karakteristik Serat Tandan Kosong Kelapa Sawit Sebagai Komposit Resin Polyester Untuk Mengetahui Nilai Absorpsi Suara Mar'i Akbar, Firzan; Napitupulu, Robert; Yudo, Eko
Jurnal Inovasi Teknologi Terapan Vol. 1 No. 2 (2023): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v1i2.43

Abstract

The development of composite materials currently not only with synthetic reinforcing materials but also with natural fiber reinforcing materials, because natural fibers have diverse characteristics. In this research, looking at the characteristics of Oil Palm Empety Fruit Bunch (OPEFB) fiber which has a high cellulose and hemicellulose content, which is generally used for soundproofing materials. So a composite research will be made from the main material of OPEFB  fiber with polyester resin as the matrix. The purpose of this research is to determine the sound absorption value of the composition of the mixture of OPEFB  fiber and resin. The method used is the hand lay-up method combined with the Taguchi Method on the L4(23) orthogonal matrix design used as a reference for the sound absorbing composite manufacturing process. The L4(23) orthogonal matrix design is used because there are three process parameters that have two levels. Repetition is repeated three times. The process parameters are the volume fraction of OPEFB  fiber and resin, the length of fiber soaking with NaOH, and the thickness of the composite. The research results from three repetitions obtained the highest value in sample I with a mean value = 77.93 dB at a frequency of 2000 Hz, and the lowest value in sample III with a mean value = 32.97 dB at a frequency of 125 Hz.
Pengaruh Susunan Hybrid Serat Resam Dan Ijuk Pada Matriks Polyester Untuk Mengetahui Nilai Impak Roperiadi; Napitupulu, Robert; Juanda, Juanda
Jurnal Inovasi Teknologi Terapan Vol. 1 No. 2 (2023): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v1i2.72

Abstract

Along with the times, synthetic composite materials are often used as materials for making reinforcing car panels, car dashboards and other interior devices. Although synthetic composite materials have strong strength, synthetic composite materials are less environmentally friendly and have an expensive price. Natural fibres are an alternative to synthetic fibres in order to reduce natural pollution and reduce production costs. Therefore, in this research I will use palm fibre and resam as reinforcement material. The purpose of this research is to find out whether mixing between resam fibre and palm fibre to make a car dashboard has reached the standardised value of making a car dashboard. The hand lay-up method will be combined with the Taguchi method in the L9(34) orthogonal matrix design used as a guide for making test specimens. With tensile and impact testing. This study used variations in volume fraction of 25%, 30%, 35% fibre, as well as variations in fibre length of 30mm, 40mm, 50mm with 2h NaOH immersion. The highest average value of impact test strength was at 30% volume fraction of fibre with 30mm fibre length with a value of 0.0617 Joule and the lowest average value was at 25% volume fraction of fibre with 50mm fibre length with a value of 0.0307 Joule.
Pemanfaatan Fly Ash Sebagai Bahan Alternatif Pada Bata Beton Untuk meningkatkan Peredaman Panas chardova, andreas; Napitupulu, Robert; Kurniawan, Zaldy
Jurnal Teknologi Terpadu Vol 12, No 2 (2024): JTT (Jurnal Teknologi Terpadu)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jtt.v12i2.2273

Abstract

Pemanfataan fly ash sebagai bahan tambah bata beton memberikan dampak positif terhadap lingkungan, selain mengurangi pencemaran lingkungan. Fly ash memiliki kandungan  silikat yang kemiripan seperti semen, penambahan fly ash pada campuran bata beton bisa menjadi bahan tambah mineral yang baik untuk bata beton karena fly ash tersebut mengandung silika yang bersifat mengikat. Penelitian ini bertujuan untuk mengetahui pengaruh limbah fly ash sebagai bahan tambah terhadap peredaman panas serta mengetahui nilai komposisi yang tertinggi dan terendah untuk penambahan limbah fly ash terhadap bata beton agar dapat meredam panas. Metode yang digunakan dalam penelitian ini adalah metode full faktorial dengan variabel proses  fly ash : pasir 10% : 60%, 20% : 50%, 30% : 40% dan lama pengeringan 3 dan 5 hari, dan dilakukan uji peredaman panas sebagai respon yang diamati dengan jumlah 6 spesimen dan 3 kali replikasi pada setiap spesimen. Berdasarkan  hasil penelitian yang diperoleh menunjukkan bahwa spesimen dengan fly ash : pasir 30% : 40% dengan waktu pengeringan 5 hari mendapatkan nilai tertinggi sebesar 6,6oC. sedangkan  fly ash : pasir 10% : 60% dengan waktu pengeringan 3 hari mendapatkan nilai terendah sebesar 4oC.
Penggunaan Fly Ash sebagai Material Bata Beton untuk Meningkatkan Daya Peredaman Panas pada Ruangan Napitupulu, Robert; Chardova, Andreas; Kurniawan, Zaldy
Manutech : Jurnal Teknologi Manufaktur Vol. 16 No. 02 (2024): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/manutech.v16i02.445

Abstract

The use of fly ash as an additive for concrete bricks has a positive impact on the environment, in addition to reducing environmental pollution. Fly ash has a silicate content that is similar to cement, the addition of fly ash to the concrete brick mixture can be a good mineral additive for concrete bricks because fly ash contains silica which is binding. This study aims to determine the effect of fly ash waste as an additive on heat reduction and to determine the highest and lowest composition values ??for the addition of fly ash waste to concrete bricks in order to reduce heat. The method used in this study is the full factorial method with process variables of fly ash: sand 10%: 60%, 20%: 50%, 30%: 40% and drying time of 3 and 5 days, and a heat reduction test was carried out as a response observed with a total of 6 specimens and 3 replications for each specimen. Based on the research results obtained, it shows that specimens with fly ash: sand 30%: 40% with a drying time of 5 days get the highest value of 6.6oC. while fly ash: 10% sand: 60% with a drying time of 3 days obtained the lowest value of 4oC.
Co-Authors Abda Abda Adhe Anggry Aldi Pratama Angelika, Vanessa Anugrah Harita, Efata Aqila Zanjabila Ariansyah Ariansyah, Ariansyah Ariel, Ariel Arif Wahyudi Ariyanto Ariyanto Arliansyah, Arul Arriyani, Yang Fitri Arsieka Putri, Diviya Benny Nainggolan Better Swengky chardova, andreas Christianty, Licia Clara Lavita Angelina Darta, Yuli Devaned Parlindungan Dharta, Yuli Diviya Arsieka Putri Doni Dyas Ryfkiansyah Efata Anugrah Harita Efata Anugrah Harita Eko Yudo Erin Aftarini Fadhlurrahman, Miftah Febri Sulistiyo Febrian Arif Ferdian, Ferdian Feriadi, Indra Firdi Irawan Gemanial, Juan Gilang Perdana Haikal ikhsan, Muhammad Harita, Revival Praise Harwadi, Harwadi Hasdiansah, Hasdiansah HERMANSYAH RHOMADAN Hernawan, Sutrisno Herwandi Herwandi Husman Husman Idiar, Idiar Indradewa, Rhian Irawan, Rizki Irwan Irwan Jekki Dodi Parlindungan Sihombing Juanda Juanda Juanda Kasim Kris Josua Pardede Kris Josua Pardede Kris M Romario4 M. Haritsah Amrullah M. Luqman Hakim Siregar Mar'i Akbar, Firzan Masdani, Masdani Meidiantara , Muhammad Rizki Muhammad Akbar Muhammad Bahit Muhammad Haritsah Amrullah Muhammad Yunus Muharramin, Areza Nanda Pranandita Nurwijayanti Parlindungan, Devaned Pranata, Yogi Pratama, Adrian Deka Pratama, Aldi Pratama, Randa Julio Pristiansyah, Pristiansyah Purma , Purma Reni Febrianti Ridho Bagus Purwansyah Rio, Rio Pratama Rodika Roland Banjarnahor Roperiadi RR. Ella Evrita Hestiandari Rullyansyah Samosir, Reguel Samuel Napitupulu, Rabinaswil Saputra, Benediktus Handaru Sateria, Angga Shanty Dwi Krishnaningsih Shanty Dwi Krisnaningsih Shanty Dwi Krisnaningsih Sihombing, Risna Primauli Simangunsong, Kristian Jubatner Sitinjak, Harpois S Soepangkat, Bobby Oedy Pramoedyo Sri Devi Zebua Subkhan Subkhan Subkhan Subkhan Sugianto Sugianto Suzen, Zaldy Sirwansyah Syaiful Asmi Hasibuan, Syaiful Asmi Triyanto, Romy Ade Utrechk Ricardo Yasmirah Mandasari Saragih Yuli Dharta Yuliyanto Yuliyanto Yuspita, Ni Luh Eta Zaldy Kurniawan