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All Journal Jurnal Teknik Mesin Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin R.E.M (Rekyasa Energi Manufaktur) Jurnal Turbo : Jurnal Program Studi Teknik Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering Justek : Jurnal Sains Dan Teknologi MITRA: Jurnal Pemberdayaan Masyarakat Otopro Academia Open JTTM: Jurnal Terapan Teknik Mesin Jurnal Abdimas ADPI Sains dan Teknologi PELS (Procedia of Engineering and Life Science) Procedia of Social Sciences and Humanities
Prantasi Harmi Tjahjanti
Universitas Muhammadiyah Sidoarjo
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Effect of cutting fluid and spindle speed on surface hardness in turning AISI 4140 steel Iswanto, Iswanto; Tjahjanti, Prantasi; Widodo, Edi; Chilmi, Muchammad
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 2 (2020): Jurnal Turbo Desember 2020
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v9i2.1305

Abstract

This paper will discuss how the influence of different cutting fluid on surface hardness, how different spindle speed affect surface hardness, and are there interactions between cutting fluid and spindle speed on surface hardness of workpieces produced by conventional lathe. In this study, the variables that are varied are the cutting fluid and spindle speed. The cutting fluid used is: dromus, used oil SAE 40 and used cooking oil. While the spindle speed used is 370 rpm, 665 rpm, and 1040 rpm. Then the hardness of the workpiece surface is tested from the lathe process by varying the cutting fluid and the spindle speed. From the results of the hardness test on the surface of the workpiece, it can be concluded that: the greatest value of the surface hardness of the workpiece is obtained in the lathe process using dromus cutting fluid and the spindle speed used is 665 rpm. Whereas the smallest workpiece surface hardness value is obtained when using dromus cutting fluid using spindle speed of 1040 rpm. Cutting Fluid and Spindle Speed has a significant effect on surface hardness in the turning process of AISI 4140 steel
TEKNOLOGI TEPAT GUNA SEDERHANA PENGELOLAAN AIR JERNIH DI DESA WISATA SUMBERGEDANG PASURUAN Harmi Tjahjanti, Prantasi; -, Iswanto; Fahruddin, A'rasy; Ryan Ernanda, Rico
Jurnal Abdimas ADPI Sains dan Teknologi Vol. 2 No. 1 (2021): Jurnal Abdimas ADPI Sains dan Teknologi
Publisher : Asosiasi Dosen PKM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47841/saintek.v2i1.170

Abstract

During the Covid-19 pandemic, the tourist village of Sumbergedang, Pandaan Pasuruan, experienced a drastic decrease in visitors, which greatly reduced their income. Meanwhile, in the village, water from the mountains is very abundant. Purpose and solution offered is to manage clear water in the village using Simple Appropriate Technology, namely making a tubing tube to fill the clear water which will later be processed into clean water. The clean water produced is ready to drink, and this will be a separate effort to increase the income of residents in the tourist village of Sumbergedang during the Covid-19 pandemic
Laju Penetrasi Korosi pada Material Alternatif Bangunan Kapal Prantasi Harmi Tjahjanti; Eko Panunggal; Darminto Darminto; Wibowo Harso Nugroho
Jurnal Teknik Mesin Vol. 15 No. 1 (2014): APRIL 2014
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Corrosion is the event of a material damage due to undesired interactions between material and environment. Corrosion is a natural phenomenon that cannot be avoided, but that can be done is to control the corrosion process by pressing the corrosion penetration rate, so that the expected lifespan and quality durable material. Ship building alternative material used is a composite material with aluminum alloy matrix AlSi10Mg(b) a ship building materials based on European Nation (EN) Aluminum Casting (AC)-43100, and written EN AC-43100 (AlSi10Mg(b)), and mixed with reinforcement of ceramic materials is silicon carbide treatment that has been expressed by the chemical formula SiC*. Overall in writing EN AC-43100 (AlSi10Mg(b)) + SiC*. The purpose of research is to determine the rate of corrosion resistance in this composite material. Corrosion testing performed is wet corrosion test and dry corrosion. Wet corrosion test is immersion  in liquid hydrochloric acid (HCl), sodium hydroxide (NaOH), sodium chloride (NaCl), and the fluid pH = 1, 3, 5, 7, 9, 11, 13. The treatment of dry testing conducted in 2 temperature, room temperature ~270C and 1000C temperature. The results showed that immersion in liquid HCl, and the fluid pH 1, experiencing the highest rate of corrosion penetration. While the highest corrosion penetration rate in the treatment of dry corrosion test was obtained at temperatures higher than room temperature. Overall it appears that the addition of SiC*, can reduce the rate of penetration of corrosion and composite materials EN AC-43100 (AlSi10Mg(b)) +15 SiC* is a good material in the face of corrosion attack, because it has the corrosion penetration rate is lower than the standard that allowable is <0.5 mm / yr.
The Characterization of Oriza sativa Husk and Royal Ponciana pods Bricquettes edi widodo; Mohammad Dani Iswanto; Prantasi Harmi Thahjanti; Rachmat Firdaus
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 5 No 2 (2020): Desember 2020
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v5i2.1214

Abstract

Rice mills produce abundant husk waste. The husks are used as a mixing material for bricks because they are flammable and have capability to form hot coals with high calor. This potential is used to develop the husks into briquettes. This study used rice husks (oriza sativa) and flamboyant pods (Royal ponciana) as the main ingredients for forming briquettes. This pods was chosen because had not optimally used. The composition of rice husk briquettes and flamboyant fruit skins made of 16.7%: 83.3%, 33.4%: 66.6%, 50%: 50%, 66.6%: 33.4%, 83.3 %: 16.7%. The briquettes formed were measured the calorific value, mass reduction using the TGA (Thermogravimetric analysis) thermal measurement method, and measured the values ​​of moisture, ash, volatile, and fixed carbon content. The results of the measurement of the lowest calorific value in rice husk briquettes were 83.3% with a value of 4,551 cal / gram, while the highest value was 5,945 cal / gram in rice husk briquettes percentage of 16.7%. The result of TGA measurement of the largest mass reduction was briquettes with a percentage of husk 83.3% having the highest mass reduction of 11.1 mg. The results of the measurement of water content obtained 7.04%, 24.70% volatile, 9.98% ash content, 58.28% fixed carbon
Use Powder Of Wood Ulin (Eusideroxylon Zwageri) For Mixed Materials Builders Head Bushing Prantasi H. Tjahjanti; Eko Wahyono Setyawan
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 1 No 1 (2016): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v1i1.174

Abstract

Head bushing is part of the plastic sack-making machine components that process works always have friction between the bushing head cham causing wear and tear. This wear and tear leads to further damage to the components - components other spare parts. Head material is nylon pure solid has a melting point 350-425 ° C, but was unable to maintain its shape because happen frictions during the process of making plastic sack. Research to make head bushing by adding the powder of wood Ulin (Eusideroxylon Zwageri) as reinforcements and to do wear and tear. The results obtained show. that the optimum value of the powder composition wood ulin is 4% , with value of wear and tear 0,0544 mm/h with a time 96 hours 29 minutes 29 seconds. But overall, the addition powder of wood Ulin, cannot be used as ingredients of make head bushing, because value of wear and tear of head bushing without additive of powder of wood Ulin, more smaller than head bushing with additive powder wood Ulin.
Pembuatan Electric Furnace Berbasis Mikrokontroler Haris Suprastiyo; Prantasi Harmi Tjahjanti
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 1 No 2 (2016): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v1i2.559

Abstract

lectric furnace atau tungku listrik adalah peralatan pemanas yang menggunakan sumber panas dari listrik. Electric furnace konvensional yang ada sekarang terkadang kurang akurasi dalam proses waktu maupun suhu. Tujuan penelitian ini adalah membuat mesin electric furnace berbasis mikrokontroler dengan fungsi utama proses pemanasan lebih akurasi terjaga waktu dan suhu dan dapat di atur secara otomatis serta di monitor melalui LCD (Liquid Crystal Display). Metode yang dipakai adalah perancangan awal sekaligus pembuatannya dan pengujian untuk uji kinerja rangkaian kelistrikan, uji kecepatan pencapaian suhu, dan uji perpindahan panas dengan melakukan pengukuran suhu dari suhu dalam electric furnace hingga suhu permukaan luar pelat. Perhitungan perpindahan panas dimulai dari dalam dinding electric furnace, batu tahan api (refraktori), pelat besi dan suhu lingkungan dengan panas yang dihasilkan dari elemen listrik berkapasitas 4400 Watt. Diperoleh hasil electric furnace dengan dimensi ruang tungku ukuran 190 mm x 350 mm x 320mm. Uji coba kinerja rangkaian kelistrikan furnace, di coba pada suhu 800 ˚C di tahan selama 30 menit, hasil yang diperoleh suhu tetap konstan 800˚C. Uji kecepatan untuk pencapaian suhu, electric furnace mampu bekerja hingga tempertur maksimum 1000 ˚C, dengan kecepatan untuk pencapaian suhu 1000 ˚C selama 17.111 detik atau 47,5 jam dengan rata-rata kenaikan suhu tiap 1˚C adalah 0,1 detik, Laju perpindahan panas total pada dinding electric furnace adalah 6,83W/m2K.
The sansevieria trifasciata fiber compatibility analysis for biocomposite reinforcement Edi Widodo; Mulyadi Mulyadi; Prantasi Harmi Tjahjanti; Fajar Syahril Kirom
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 1 (2021): Jurnal TURBO Juni 2021
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i1.1542

Abstract

This study analyzes the potential of sanseviera fibers to be used as biocomposite reinforcement. Sansevieria fibers are characterized to improve physical and chemical properties so that they are stronger and can be used as a reinforcement for the composite matrix. Fiber alkaline treatment with NaOH solution, proven to remove hemicellulose and lignin content, improve fiber properties, can increase the adhesiveness properties of the resin matrix. The fiber that has been treated with alkali is used as a bio-composite reinforcement using an epoxy resin matrix. FTIR test was carried out to obtain data from the compound groups of the fibers. Cellulose and hemicellulose contents were analyzed and the degree of crystallinity of the fibers to obtain compatibility with epoxy resin as a matrix. Chemical properties of Sansevieria fibers. Compared to PET and PETG fibers, as a composite reinforcing synthetic fiber with good compatibility with resins. This compatibility will determine the homogeneity of the adhesive properties of the fiber surface to the matrix. The bonding of microstructural compounds is very dependent on this property and will give the final result a better tensile strength of the composite.Keywords: biocomposite, sansevieria fibre, epoxy resin.
STUDI VARIASI JENIS MATERIAL TALI PADA MODIFIKASI ALAT PENGUKURAN TORSI POMPA SENTRIFUGAL Taufik Afandi; Edi Widodo; Prantasi Harmi Tjahjanti; Iswanto Iswanto
Otopro Vol 16 No 2 Mei 2021
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v16n2.p50-57

Abstract

The focus of this research is to analyze variations in the type of rope material and size as a link for measuring the force on a centrifugal pump, namely to find out the type of material and the size of the rope that is suitable to minimize the loss of force contained in the wire. To find out the type of calculation and comparison of the values for various types of material. From the tensile test that has been done, the highest UTS (Ultimate Tensille Stress) value was obtained in a polypropylene monofilament rope specimen with a stress value of 602.17 kgf with 382.14% elongation. The highest stress calculation value data was obtained by the Polypropylene monofilament rope specimen with a value of 738,85 at elongation to 360%. The highest modulus of elasticity obtained by Nylon rope was 4,564  . This shows that the modulus of elasticity is inversely proportional to the stress value, which was the stress value of nylon straps that was the highest compared to other specimens but had the highest elastic modulus value among other specimens.
Study of Tensile Strength Test of Oxi-Asetyline Welding with the Addition of Borax to St 37 Steel Bagas Ariya Dipangga; Prantasi Harmi Tjahjanti
Procedia of Engineering and Life Science Vol 1 No 1 (2021): Proceedings of the 1st Seminar Nasional Sains 2021
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (469.025 KB) | DOI: 10.21070/pels.v1i1.828

Abstract

The use of welding in industry today is very broad, including shipping, machinery, construction and others. The aim of this research was to study the welding results of two types of metal with different melting points, namely low carbon steel ST37 with brass filler and borax added during the welding process using OAW (Oxygent Acetyline Welding) welding. The specimen size is 170 mm long, 50 mm wide and 8 mm thick. As for the test method with the addition of borax, then look at the results of the number of porosity, weld defects and differences in tensile strength in each specimen by conducting penetrant liquid testing and tensile testing with ASTM E-8 standards. The results of the penetrant liquid test showed that welding ST 37 steel using borax as an additional material produced welding with the smallest porosity and even no defects at all compared to specimens without using borax. The results of the tensile test show that the addition of borax has a tensile strength value of 2000 kgf / mm². This value is greater than without the addition of borax.
Thermoset Polymer Splicing Study Using a variation of welding Adi Prastyo Utomo; Prantasi Harmi Tjahjanti
Procedia of Engineering and Life Science Vol 1 No 1 (2021): Proceedings of the 1st Seminar Nasional Sains 2021
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (442.698 KB) | DOI: 10.21070/pels.v1i1.829

Abstract

There is not much plastic welding currently done and not much research has been done on plastic welding. The purpose of this study was to study the use of welding variations used to join the thermoset polymer material. The thermoset polymer materials used are acrylic, melamine and bakelit with the test sample measuring 80mm in length, 30mm in width and 3mm in thickness. Variations in welding are used using hot gas welding, electric soldering and gas torches. The test method is carried out after welding to determine the porosity of the weld using a penetrant liquid. Hardness testing was also carried out. The best welding results are shown on acrylic material using electric solder, showing that the amount of porosity is the least, and has the highest hardness test.
Co-Authors A'rasy Fahruddin Abdi Chandra Putra Abdul Aziz Prasetiyo Achmad Febriyan Ikhsanudin Adi Prastyo Utomo Agus Hermawanto Ajitiyo Dananjoyo Alfiansyah Satrio Wicaksono Ali Akbar Arasy Fahruddin As’ad Anom Isti Ayeik Abimanyu A’rasy Fahruddin Bagas Ariya Dipangga Chilmi, Muchammad Darminto Darminto Edi Widodo Edi Widodo, Edi Eko Panunggal Eko Wahyono Setyawan Fahruddin, A'rasy Fajar Syahril Kirom Faris Abdullah Fuad Hamzah Haris Suprastiyo Henry Vian Ivanda Iqbal Hadliri Iswanto -, Iswanto Iswanto Iswanto Iswanto Iswanto Izza Anshory M. Ganu Hersandi Moch Arif Hidayatulloh Mochammad Sandi Al Amien Mohammad Afif Fajar Mohammad Dani Iswanto Muhammad Amin Putro Mulyadi Mulyadi Nurmughni Zulham Amri Rachmat Firdaus Rexy Eca Fernanda Rico Ryan Ernanda Rizki Ardi Arrahman Ryan Ernanda, Rico Septian Firmansyah Taufik Afandi Wibowo Harso Nugroho Wijaya Kelana Nur Soleh Wijaya Kelana Nur Soleh Wiwik Sumarmi Zyahdo Nikri Jofalo