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All Journal Jurnal Keteknikan Pertanian Jurnal Teknologi Rekayasa Mesin Sinergi Journal of ICT Research and Applications Indonesian Journal of Science and Technology JOURNAL OF SCIENCE AND APPLIED ENGINEERING Jurnal Pelayanan dan Pengabdian Masyarakat (Pamas) Jurnal Pengabdian Masyarakat Teknik Journal of Applied Sciences and Advanced Technology Indonesian Journal of Computing, Engineering, and Design International Journal of Computer and Information System (IJCIS) Mechanical Engineering for Society and Industry Makara Journal of Science Journal of Community Services: Sustainability and Empowerment ASEAN Journal for Science and Engineering in Materials
Kushendarsyah Saptaji
Universitas Sampoerna
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Penyuluhan Manfaat Pendidikan Tinggi dan Penelitian di Dalam dan Luar Negeri Aditiya Harjon; Ignatius Budi Sutanto Hadisujoto; Kushendarsyah Saptaji; Iwan Setiawan; Wandy Wandy
Jurnal Pelayanan dan Pengabdian Masyarakat (Pamas) Vol 4, No 1 (2020): Jurnal Pelayanan dan Pengabdian Masyarakat (Pamas)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM Universitas Respati Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/pamas.v4i1.775

Abstract

Ragam program studi yang ada di Perguruan Tinggi patut untuk diperkenalkan sejak dini kepada siswa-siswi SMP. Adik-adik di SMP Jame Pekojan diharapkan memiliki wawasan dan tatanan dalam menggapai masa depan di bidang akademik, lalu dapat berlanjut ke dunia kerja seuai dengan keinginan, kemampuan, minat, dan bakat. Beasiswa merupakan salah satu solusi bagi adik-adik yang ingin melanjutkan pendidikan ke Perguruan Tinggi. Guna mendapatkan beasiswa, adik-adik di SMP Jame Pekojan perlu mempersiapkan diri, berupaya lebih giat, dan berprestasi. Penelitian adalah salah satu dari ragam aktivitas yang berada di dunia Pendidikan Tinggi. Topik penelitian kian beragam dan kian spesifik, aktivitas penelitian juga patut untuk diinformasikan kepada adik-adik siswa-siswi. Penelitian juga adalah jalan yang memudahkan untuk medapatkan beasiswa. Diharapkan dengan penyuluhan kali ini dapat meningkatkan wawasan adik-adik siswa-siswi di SMP Jame Pekojan mengenai arti penting dan manfaat Pendidikan Tinggi dan Penelitian di masa yang akan datang.Kata Kunci: Pendidikan Tinggi, Perguruan Tinggi, Penelitian, Beasiswa
DEVELOPMENT OF ELECTRIC DISCHARGE MACHINING (EDM) USING SOLENOID ACTUATOR FOR EDUCATIONAL PURPOSE Kushendarsyah Saptaji; Arnaz Asa Sholeh; Gigih Priyandoko; Ignatius Budi Hadisujoto
SINERGI Vol 25, No 3 (2021)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2021.3.005

Abstract

The increasing number of materials with variation in properties, especially hard-to-cut, leads to the need for an advanced machining method to process such material. Electric Discharge Machining (EDM) is one of the advanced machining methods widely used for hard-to-cut alloys. The EDM process uses an electrode as the conductor of electrical current to erode the metal alloys and is supported by other components. Due to EDM's high cost and high energy consumption, developing a low-cost EDM and simpler EDM setup is necessary, especially for educational purposes in laboratory activity. However, the EDM design and setup required to produce the desired “spark” have always been a challenge for researchers and manufacturers. In this research, a small-scale EDM setup was built. A solenoid actuator is used to generate simple mechanical movement. The movement is used to control the gap between the workpiece and the electrode to produce a spark. The solenoid actuator is used because of its low cost and simple mechanism. The proposed EDM setup is successfully fabricated and works appropriately by generating sparks and a hole cavity during the process. There are six cavity holes produced in mild steel workpiece during the experiments with various parameters such as current (5A, 7A, and 10A) and frequency (10 Hz and 20 Hz). The varied parameter shows that the higher current and lower frequency removed more materials. In contrast, the higher frequency produced a better quality of the cavity hole. However, the lack of flushing quality on the material debris during the process results in the formation of excess metals around the edge of the hole. 
Wireless Vibration Monitoring System for Milling Process Muhamad Rausyan Fikri; Kushendarsyah Saptaji; Fijai Naja Azmi
Journal of ICT Research and Applications Vol. 16 No. 1 (2022)
Publisher : LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.ict.res.appl.2022.16.1.3

Abstract

The implementation of industrial revolution 4.0 in manufacturing industries is necessary to adapt to the rapid changes of technologies. The milling process is one of the common manufacturing processes applied in the industries to produce engineering products. The vibration that occurs in the milling process can disturb the continuity of the process. The wired vibration monitoring system implemented in the manufacturing process needs to be replaced with the wireless monitoring system. Hence wireless vibration monitoring system is developed to solve the problem with wired monitoring systems where tucked cable and high cost are the main challenges of the wired monitoring system. The wireless monitoring system setup is built using three components: sensor node, monitoring node, and base station. Milling experiments with various depths of cut, feed rate, and spindle speed were conducted to examine the performance of the wireless monitoring system. The results indicate the wireless system shows similar data recorded by the wired system. The wireless vibration monitoring system can identify the effect of milling parameters such as depth of cut, feed rate, and spindle speed on the vibrations level. The effect of cut depth is more significant than spindle speed and feed rate in the defined parameters.
Determining Crispness Level of Dry Food through Its Compressive Strain Energy Farid Triawan; Gloria Ellysian Aprilia; Kushendarsyah Saptaji; Ramadhona Saville; Asep Bayu Dani Nandiyanto
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 3 No. 2 (2021): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/ijoced.v3i2.55

Abstract

Crispness is the most appealing characteristic of dry food products. However, the term crispness has different subjective meaning among consumers. This study aims to quantitatively measure the crispness of potato crisp by performing compression test on a single specimen, and analyzing the compressive behavior, i.e., compressive strain energy. The crispness of the specimens were differentiated by changing the moisture exposure durations, which are 0, 1, 2, 3, 6 hours, in a room and ambient condition. The measured load and displacement data were transformed into stress and strain curves. The strain energy for every 1% strain increment was calculated and investigated to determine the crispness. The crispness difference among specimens of 0, 3, and 6 hours groups was significantly perceived at 8% of strain. It was revealed that the 3 and 6 hours of room air exposure could decrease the crispness by 17% and 45%, respectively. This suggests the compressive strain energy at a certain strain can be an indicator of crispness. This experimental study is expected to evolve food engineering by proposing a simple yet precise crispness measurement method for dry food.
Corrosion Rate of Carbon Steel A106 Gr B in Amine-CO2 Contained Solutions Yuli Panca Asmara; Tedi Kurniawan; Kushendarsyah Saptaji
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 3 No. 1 (2021): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/ijoced.v3i1.120

Abstract

Carbon dioxide (CO2) is one of the corrosive element which exists in oil and gas industries. To prevent CO2 corrosion on carbon steel pipelines, amine-base solvent and caustic solutions are commonly applied. Accordingly, effectiveness of amine base solvent and caustic solutions to reduce risk of corrosion becomes key parameters in determining service lifetime of pipelines made of carbon steel. In this research, the corrosion rate of carbon steel A106 Gr B in amine solutions combined with saturated CO2 gas and caustic solution was studied. The experiments were carried out in static conditions and the Linear Polarization Resistance (LPR) technique was used to measure the corrosion rate (as per ASTM G 5-94). It was found that the corrosion rate in the amine-based solution had shown remarkable results. Somehow, the corrosion rate in an amine-based solvent containing saturated CO2 gas has increased to 200%. The temperature increment to 50°C from room temperature has also increased the corrosion rate. Meanwhile, the caustic addition in amine solution has reduced the corrosion rate of carbon steel.
A Review on Measurement Methods for Machining Induced Residual Stress Kushendarsyah Saptaji; Siti Nur Afiqah; Raden Dadan Ramdan
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 1 No. 2 (2019): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/ijoced.v1i2.64

Abstract

The chip formation in mechanical machining / cutting process involves thermal loading and mechanical loading in the form of large plastic deformations, high strain, strain rates and high temperatures in the cutting zone. These loadings usually induce plastic deformation in the form of residual stresses in the surface and sub-surface of the machined workpiece. Residual stress issue is essential to be studied in order to control the quality and fatigue life of a component or part produced by machining process. Therefore, the magnitude and depth of the residual stresses into the workpiece sub-surface is important and necessary to be measured. The objective of this paper is to discuss various study on the effects of machining parameters on residual stress and residual stress measurement methods for machined workpiece namely non-destructive, semi-destructive and destructive methods. In addition, the effect of machining process into the metallurgical conditions of the workpiece in the form of microstructural changes is also discussed.
Potential Applications of Hydroxyapatite-Mineralized-Collagen Composites as Bone Structure Regeneration: a Review Kushendarsyah Saptaji; Dindamilenia Choirunnisa Hardiyasanti; Muchammad Fachrizal Ali; Raffy Frandito; Tiara Kusuma Dewi
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 5, No 1 (2022): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31328/jsae.v5i1.3577

Abstract

The composites materials are known for their flexibility due to the combinations of two or three different materials and manipulation of their compositions. The advantage offered by composite materials make it suitable for biomedical applications especially to be used for implants. There are three types of composites biocompatible materials namely Metal Matrix Composite (MMC), Ceramic Matrix Composite (CMC) and Polymer Matrix Composite (PMC). In order to produce the biocompatible composite materials, various manufacturing processes can be performed. The manufacturing processes of MMCs are stir casting and powder metallurgy; the typical manufacturing process for CMCs is powder metallurgy; and 3-D printing by synthesizing and cross-linking the networks is used for fabricating PMCs. One of the promising biocompatible composites is Hydroxyapatite Mineralized Collagen (HMC). The HMC is used to create bone scaffold in bone regeneration process. The suggested manufacturing process for HMC is hybrid process which collaborate Additive Manufacturing and CNC Machining. In this paper, the HMC is reviewed especially related with its properties, fabrication method, and existed experimentation. In addition, the three types of biocompatible composites are also discussed on the applications and its manufacturing processes.
SOSIALISASI PEMANFAATAN SAMPAH ORGANIK RUMAH TANGGA UNTUK BIOGAS DAN PEMASANGAN BIODIGESTER Kushendarsyah Saptaji; Muhamad Rausyan Fikri; Ignatius Budi Sutanto Hadisujoto; Aditiya Harjon
Jurnal Pengabdian Masyarakat Teknik Vol 4, No 1 (2021): Jurnal Pengabdian Masyarakat Teknik (JPMT)
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jpmt.4.1.11-18

Abstract

Limbah atau sampah organik rumah tangga berupa sisa makanan dapat dimanfaatkan sebagai sumber energi alternatif dalam bentuk biogas. Biogas dapat dihasilkan dengan menguraikan sampah organik dengan bantuan bakteri di dalam reaktor biodigester. Program pengabdian masyarakat yang dilakukan ini adalah membantu sebuah institusi pendidikan untuk memanfaatkan limbah sisa makanan agar menghasilkan biogas untuk digunakan sebagai pengganti gas elpiji untuk memasak. Dalam kegiatan ini, dilakukan pemasangan biodigester dan penyuluhan serta sosialisasi bukan hanya terkait dengan biogas tetapi terkait juga bidang-bidang energi terbarukan, mekatronik dan robotik kepada para siswa. Hasil dari kegiatan ini adalah reaktor biodigester bisa dimanfaatkan oleh para siswa dan mengurangi beban biaya pembelian gas elpiji. Selain itu juga dapat menambah wawasan dan pengetahuan para siswa mengenai bidang-bidang yang berkaitan dengan energi terbarukan, mekatronika dan robotika.
Poly(2-Hydroxyethyl Methacrylate) Hydrogels for Contact Lens Applications–A Review Saptaji, Kushendarsyah; Iza, Nurlaely Rohmatul; Widianingrum, Sinta; Mulia, Vania Katherine; Setiawan, Iwan
Makara Journal of Science Vol. 25, No. 3
Publisher : UI Scholars Hub

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

Abstract

The emerging technology in biomedical engineering requires biocompatible materials, which are also referred to as biomaterials. For a material to be considered biocompatible, it should not interact with human tissues in a harmful way, and vice versa. Various properties of biocompatible materials, such as mechanical and optical properties, have to be considered for different biomedical applications. One of the most popular applications of biomaterials is for contact lenses. Hydrogels, specifically poly(2-hydroxyethyl methacrylate) (PHEMA) hydrogels, are among the most popular ones in ophthalmologic applications, especially in soft contact lenses. This paper reviews the use of PHEMA hydrogels as one of the important biomaterials. The possible applications, properties, and manufacturing process of PHEMA hydrogels, especially in contact lens applications, are addressed. Many studies have shown that PHEMA hydrogels possess many advantages in contact lens applications and have promising development prospects.
The Implementation of Online Practicum Classes During the Covid-19 Pandemic at Sampoerna University Indra Pertama Putra; Ifat Ifat; Kushendarsyah Saptaji; Aditiya Harjon; Yheni Mulyaningsih
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 5, No 2 (2022): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31328/jsae.v5i2.4071

Abstract

The unprecedented Covid-19 pandemic has altered the way educational institutions operate, including Sampoerna University. Distanced learning has been commonly implemented since then. Not only for taught classes but laboratories or practical activities, such as Mechanics of Materials and Machine Shop have also been organized virtually for the undergraduate student in the mechanical engineering study program. Two stages of activities were carried out during the conduct, namely the (1) preparatory stage, where all the teaching materials in the form of videos were prepared, and (2) virtual lab. At the end of the semester, the participating students were asked to fill out a questionnaire to evaluate the entire practicum process. The results revealed that, according to students, teaching and learning activities performed in such a way are quite effective and satisfying. Regardless, based on the survey result, the students expect to have practical activities conducted in person to gain hands-on experience.
Co-Authors Abdillah, Sultansyah Reza Adiati Junaisih, Octarina Aditiya Harjon Alvika Meta Sari Anak Agung Ngurah Perwira Redi Anwar Ilmar Ramadhan Arnaz Asa Sholeh Asep Bayu Dani Nandiyanto Asmelash Gebremariam Asriyanti, A. Asriyanti, Asriyanti Ayu Wardani, Dilla Azhari, Azmir Azmairit Aziz Bryan, Jonathan Budiarta, Wahyu Nur Chang, Steven Henderson Dindamilenia Choirunnisa Hardiyasanti Dyota, Arya Smara Efrizon Umar Efrizon Umar Fernandez, Nikolas Krisma Fernandez, Nikolas Krisma Hadi Fijai Naja Azmi Fikri, Muhamad Rausyan Firmansyah Firmansyah Firmansyah Firmansyah Frandito, Raffy Gloria Ellysian Aprilia Hadisujoto, Budi Hadisujoto, Ignatius Budi Hadisujoto, Ignatius Budi Sutanto Handani, Nadya Geraldine Handika, Raditya Edra Raja Ifat Ifat Ifat Ifat, Ifat Ignatius Budi Hadisujoto Ignatius Budi Sutanto Hadisujoto Ignatius Budi Sutanto Hadisujoto Indra Pertama Putra islam, sri susilawati Istianto Budhi Rahardja Iwan Setiawan Iwan Setiawan Iza, Nurlaely Rohmatul Juniasih, Octarina Adiati Kalam, Ikramin Kamila, Fatima Tasya Khoiriyah, Nisa Kusuma Dewi, Tiara Lanaggalih, Jarvis Eros Lubis, Steven Abed Daniel M.S. Hendriyawan Achmad Manasikana, Dinda Arina Muchamad Oktaviandri Muchammad Fachrizal Ali Muhamad Rausyan Fikri Muhamad Rausyan Fikri Muhammad Akhsin Muflikhun Muhammad Dadi Saputra Muhammad Lukman Baihaqi Alfakihuddin Muhammad, Azka Aulia Mulia, Vania Katherine Muryanti, Laely Natayu, Amartya Nurprihatin, Filscha Ong, Janice Priyandoko Gigih Putra, Indra Pertama Rabbani, Ariq Naufal Raden Dadan Ramdan Raffy Frandito Ramadhani, Mochammad Rafli Ramadhona Saville Rausyan Fikri, Muhamad Reflin, Rhainna Rheizkhira Safety Husna Pangestika Semendo, Rifqi Putra Setiawan, Hanif Rama Yuda Sholeh, Arnaz Asa Siswojo, Nathanael Ansel Siti Nur Afiqah Surya Danusaputro Liman Tedi Kurniawan Tiara Kusuma Dewi Tong Keong Sai Tri Yuni Hendrawati Triawan, Farid Trisnadewi, Titin Tumada, Azahri Tumada, Azhari Utomo, Muhammad Satrio Wandy Wandy Weandri, Aliffa Ratumahesa Wibowo, Djati Widianingrum, Sinta Wong, Miguel Silvano Hermawan Yheni Mulyaningsih Yuli Panca Asmara Yuli Panca Asmara