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Oxy Acetylene Welding Analysis for Plastic Welding of Thermoplastic Polymer Materials Ayeik Abimanyu; 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 (203.312 KB) | DOI: 10.21070/pels.v1i1.833

Abstract

Plastic welding technique is a technique of gluing to workpieces, especially plastic materials. The aim of this research was to join the thermoplastic polymer material using an acetylene oxy welding. The connection method is by melting the electrodes on the workpiece so that the electrodes can fuse to the parent material. The materials used are Polyethylene (PE), Polyvinyl chloride (PVC) and Polypropylene (PP) plastic sheets with the appropriate electrodes from their respective parents. After going through the welding process, the weld results are tested using a dye penetrant. The best results from the dye penetrant are then tested for hardness
Analysis of Corrosion Breakdown Rate in Low Carbon Steel with Aluminum Coating Zyahdo Nikri Jofalo; 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 (283.782 KB) | DOI: 10.21070/pels.v1i1.837

Abstract

This study aims to analyze the corrosion penetration rate of low carbon steel with aluminium coating. The method used is the potentiodynamic method to determine the value of the corrosion rate. The corrosion medium used was HCl. The aluminium used is aluminium frame waste powder. The coating process is by dipping low carbon steel pipes into aluminium frame waste that had been liquefied in the Hot Dip Galvanizing (HDG) method of 700oC and immersion time of 45 seconds. The results of this study show that low carbon steel which has been coated with aluminum frame waste powder has a high corrosion rate which is proven to have a corrosion rate of 18,1808 mm/year. So that the corrosion rate is at an unacceptable level.
Analysis of Corrosion Resistant Steel Coating Using Hot Dip Galvanization Method and Polarization / Tafel Test Faris Abdullah; 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 (391.623 KB) | DOI: 10.21070/pels.v1i1.846

Abstract

Hot Dip Galvanization (HDG) is a method of plating steel by immersing liquid zinc. However, in this study, HDG was tried by dipping steel in a solution of cast aluminum waste, after being coated with galvanizing and graphene. Furthermore, the corrosion test is carried out using the tafel or polarization test aid. The aim of this research is to protect the corrosion attack on steel by means of HDG in a solution of cast aluminum waste, after being coated with galvanizing and graphene. The solution in the tafel test used NaCl solution. The results obtained were the least corrosion attacks on steel with a galvanic coating and graphene. Meanwhile, HDG with cast aluminum waste is not significant to protect corrosion on steel.
Analysis of Tube Design for Clean Water from Stainless Steel 304 and 201 Muhammad Amin Putro; 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 (668.417 KB) | DOI: 10.21070/pels.v1i1.847

Abstract

This study aims to design the water tube for pure water namely a set of processing tools used to place the water using Autodesk Inventor 2016 software. The data which inputted is stainless steel SS 304 and SS 201, because both of them have the Cr and Ni elements, which will be used as tubes and the top and bottom caps. The results of running data are von mises stress, displacement, and safety factor. The output data were used to obtain the most efficient material and thickness variations between 1.5mm, 2mm, and 3mm. The most suitable and efficient result shown at 3mm thick SS 304 with the maximum value of von mises stress is 14.62 MPa, a maximum displacement of 0.013mm, and a safety factor of 15.
The Effect of Temperature and Air Velocity on Drying Rate of Cracker Dough Using Cabinet Dryer: Pengaruh Variasi Temperatur dan Kecepatan Udara Terhadap Laju Pengeringan Adonan Kerupuk Menggunakan Cabinet Dryer A’rasy Fahruddin; As’ad Anom Isti; Mulyadi; Prantasi Harmi Tjahjanti
Procedia of Social Sciences and Humanities Vol. 3 (2022): Proceedings of the 1st SENARA 2022
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pssh.v3i.250

Abstract

Drying is the heating process of food so that it reaches the water content of a certain material. This study aims to determine the drying rate and drying efficiency of wet crackers by using a dryer that is varied with variations in temperature and air velocity. The drying rate is the rate at which the water content of the specimen is reduced. In the drying rate test, it is obtained from the rate of reduction of the mass of the specimen due to evaporation of the water content in the specimen. The test was carried out in stages by adjusting the temperature to 60oC, 70oC, and 80oC with the air speed of the blower at 700 rpm, 1150 rpm, and 1600 rpm continuously. The test results show that the drying rate and drying efficiency are the most optimal as follows: a temperature of 80oC at a blower speed of 700 rpm produces a drying rate of 11.67 mg/min.
Plastic Cup Lid Molding Machine Design For Clean Water Ready to Drink in Sumbergedang Village, Pasuruan: Desain Mesin Cetak Tutup Gelas Plastik Untuk Air Bersih Siap Minum di Desa Sumbergedang Pasuruan Prantasi Harmi Tjahjanti; Henry Vian Ivanda; Fuad Hamzah
Procedia of Social Sciences and Humanities Vol. 3 (2022): Proceedings of the 1st SENARA 2022
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pssh.v3i.294

Abstract

Plastic cup lid printing machine design for clean ready-to- drink water in Sumbergedang Village, Pasuruan is the result of research and dedication to the Community that has been done before. Design it later then it will be made / realized with the main objectives are as follows:additional income for the village community of Sumbergedang Pasuruan. MachineThis plastic cup lid print is designed to use a driving motor, so it's not manual power. The design uses SolidWork software with the input data being the cup sealer machine body component, the motor component for the sealing process, the cutter press component (plastic cutter when sealed), the ring component for the glass cup, and other additional components. The final result of the design made meets the requirements to be made (manufacturing)
Briquette Making Natural and Synthetic Materials: Pembuatan Briket Bahan Alami dan Bahan Sintesis Prantasi Harmi Tjahjanti; Rexy Eca Fernanda; Achmad Febriyan Ikhsanudin
Procedia of Social Sciences and Humanities Vol. 3 (2022): Proceedings of the 1st SENARA 2022
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pssh.v3i.295

Abstract

A briquette is a block of combustible material that is used as a fuel to start and maintain a flame. This research makes briquettes made from thermoplastic type plastic bottle waste mixed with natural and synthetic materials. Natural materials using a mixture of coconut fiber, sawdust/wood sawdust with starch adhesive, while the synthetic ones use used cloth or cloth waste, paper waste and Lapindo mud adhesive. The briquette test was carried out, namely the heat test, combustion test, and proximate test. The results obtained that briquettes made from waste/garbage of plastic bottles mixed with natural and synthetic materials can increase the calorific value and combustion value of the briquettes.
Studi Awal Pembuatan Briket dari Campuran Sampah Botol Jenis PET dan Bahan Sintesis Dengan Perekat Lumpur Sidoarjo Rexy Eca Fernanda; Prantasi Harmi Tjahjanti; A'rasy Fahruddin; Ali Akbar; Achmad Febriyan Ikhsanudin
Justek : Jurnal Sains dan Teknologi Vol 5, No 2 (2022): November
Publisher : Unversitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/justek.v5i2.9975

Abstract

Abstract:  Plastic garbage from PET (Polyethylene Terephthalate) bottle waste is a significant amount that, if improperly managed, would continue to grow and pollute the environment. Meanwhile, PET bottle waste that has been appropriately processed can be turned into briquettes (charcoal). This study aims to examine the manufacture of briquettes from a mixture of PET plastic bottle waste and synthetic materials in the form of patchwork and waste paper with Sidoarjo mud adhesive (Lapindo). The stages of making briquettes include carbonization at a temperature of 250oC, pulverization and sifting of carbonized charcoal into a size of 40-60 mesh. Composition of mixing charcoal with a ratio of 50:30:20 and Sidoarjo mud adhesive used as much as 8%. Briquette printing using manual press machine. The calorific value test, and proximity test were used to conduct the briquette test. The results of the briquette research resulted in a calorific value of 4717 cal/gr, moisture in sample 1,22%, ash content 15,90%, volatile matter 63,86%, fixed carbon 20,24%.Abstrak: Sampah botol PET (Polyethylene Terephthalate) merupakan sampah plastik yang sangat banyak, dan jika tidak diatasi dengan baik maka jumlah sampah plastik meningkat terus menerus dan menyebabkan pencemaran lingkungan. Sementara bila diolah dengan baik, maka sampah botol PET dapat dibuat menjadi briket (arang). Penelitian ini bertujuan untuk mengkaji pembuatan briket dari campuran sampah botol plastik jenis PET dan bahan sintesis berupa kain perca dan kertas bekas dengan perekat lumpur Sidoarjo (Lapindo). Tahap pembuatan briket meliputi karbonisasi pada temperatur 250oC, penumbukan dan pengayakan arang hasil karbonisasi hingga ukuran 40-60 mesh. Komposisi pencampuran arang dengan perbandingan 50:30:20 dan bahan perekat lumpur Sidoarjo digunakan sebanyak 8%. Pencetakan briket menggunakan mesin press manual. Pengujian briket dilakukan dengan uji nilai kalor, dan uji proksimate. Hasil penelitian briket menghasilkan nilai kalor sebesar 4717 kal/gr, kadar air 1,22%, kadar abu 15,90%, kadar zat menguap 63,86%, dan kadar karbon 20,24%.
Pengkajian Briket dari Campuran Sampah Botol Jenis PET dan Bahan Natural Dengan Perekat Kanji Achmad Febriyan Ikhsanudin; Prantasi Harmi Tjahjanti; A'rasy Fahruddin; Ali Akbar; Rexy Eca Fernanda
Justek : Jurnal Sains dan Teknologi Vol 5, No 2 (2022): November
Publisher : Unversitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/justek.v5i2.9971

Abstract

Abstract: One of the most abundant and negative impacts on the environment is plastic waste. PET (Polyethylene Terephthalate) bottle waste is the largest plastic waste, and has not been processed optimally. The purpose of this research was to examine the manufacture of briquettes from PET plastic bottle waste mixed with natural materials, such as coconut shells and wood sawdust with starch adhesive. This research uses an experimental method that begins with the carbonization process of the material. Then the briquette molding process with the composition of each material is 50% PET bottle waste, 30% coconut shell, 20% sawdust, and 20% starch adhesive used. The briquette test is carried out by using the calorific value test and the proximate test. The results of this research indicate that the briquettes produce a calorific value of 5608 cal/gr, water content is 5.18%, ash content is 3.55%, volatile matter content is 63.96%, and carbon content is 32.49%.Abstrak: Salah satu limbah yang paling banyak dan berdampak buruk terhadap lingkungan adalah sampah plastik. Sampah botol jenis PET (Polyethylene Terephthalate) merupakan sampah plastik dengan jumlah terbanyak, dan belum diolah secara optimum. Tujuan penelitian ini adalah mengkaji pembuatan briket dari sampah botol plastik jenis PET dicampur dengan bahan-bahan natural,seperti tempurung kelapa dan serbuk gergaji kayu dengan perekat kanji. Penelitian ini menggunakan metode eksperimen yang diawali dengan proses karbonisasi bahan. Kemudian proses pencetakan briket dengan komposisi masing-masing bahan adalah 50% sampah botol PET, 30% tempurung kelapa, 20% serbuk gergaji, dan perekat kanji yang digunakan sebanyak 20%. Pengujian briket dilakukan dengan uji nilai kalor dan uji proksimate. Hasil dari penelitian ini menunjukkan bahwa briket menghasilkan nilai kalor sebesar 5608 kal/gr, kadar air 5,18%, kadar abu 3,55%, kadar zat menguap 63,96%, dan kadar karbon 32,49%.
Teknologi Tepat Guna Sederhana Pengelolaan Air Jernih di Desa Wisata Sumbergedang Pasuruan Prantasi Harmi Tjahjanti; Iswanto Iswanto; A'rasy Fahruddin; Rico Ryan Ernanda
Jurnal Abdimas ADPI Sains dan Teknologi Vol. 2 No. 1 (2021): Jurnal Abdimas ADPI Sains dan Teknologi
Publisher : Asosiasi Dosen Pengabdian kepada Masyarakat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47841/saintek.v2i1.40

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 thetourist village of Sumbergedang during the Covid-19 pandemic.