Article Per Year (5 Year)
p-Index From 2020 - 2025
2.255
P-Index
This Author published in this journals
All Journal IAES International Journal of Artificial Intelligence (IJ-AI) Rekayasa Mesin Sinergi Jurnal Teknik Mesin International Journal of Advanced Technology in Mechanical, Mechatronics and Material (IJATEC) JTTM: Jurnal Terapan Teknik Mesin International Journal of Community Service Akuntansi dan Humaniora: Jurnal Pengabdian Masyarakat Jurnal Pengabdian Masyarakat Bhinneka International Journal of Innovation in Mechanical Engineering and Advanced Materials Journal of Engineering and Technological Sciences
Wiwit Suprihatiningsih
Universitas Mercu Buana
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
Opacity Results Diesel Fuel: Bio Solar, Dexlite, Dex and Analysis Theoretical Flammability Limit Hadi Pranoto; Wiwit Suprihatiningsih; Muhammad Idil Fadil; Supaat Zakaria
International Journal of Advanced Technology Vol 1, No 1 (2020)
Publisher : Institute for Research on Innovation and Industrial System (IRIS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1238.016 KB) | DOI: 10.37869/ijatec.v1i1.10

Abstract

Each mixture of fuel and gas has a different flame speed. Gas will only burn at a suitable percentage of air and produce different exhaust gas opacity, opacity is a ratio of the rate of light absorption by smoke expressed in units of percent. This study aims to theoretically analyze the relationship between the flammability limit and the variation of fuel which has a different setana number associated with the exhaust gas opacity value of the engine performance test equipment. The machine performance test equipment used is the L300 engine. The methodology used is the testing of exhaust gas opacity using the Koeng OP-201 opacity meter and theoretically analyzed its relationship with the bio solar, dexlite and pertamina dex flame limits. The results of this study found that bio solar has an upper flame limit of 6.65%, a lowerflame limit of 0.53%, and an average opacity value of 12.1%. Dexlite has an upper limit of 6.70%, a lower limit of 0.53%, and an average opacity value of 10.5%. Pertamina dex has an upper limit of 6.68%, a lower limit of 0.53%, and an average opacity value of 9.21%.
Development of a smart system for gasoline car emissions diagnosis using Bayesian Network Dedik Romahadi; Wiwit Suprihatiningsih; Yudha Aji Pramono; Hui Xiong
SINERGI Vol 27, No 2 (2023)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2023.2.009

Abstract

A vehicle exhaust emissions test is an activity carried out to determine the content of the remaining combustion products that occur in the fuel in the vehicle engine. Many people do not understand exhaust gas content from emission tests, so to make this easier, this study aims to create a smart application that can diagnose vehicle emissions quickly and accurately using the Bayesian Network (BN) algorithm. Application development begins with BN modeling using the MSBNx application until the appropriate results are achieved. Validation of the BN structure that has been designed with various inputs is carried out to ensure that the BN modeling is correct. The next step is to compile the BN modeling algorithm in the MATLAB application so that it becomes a system that can process input in the form of measurement results for Toyota car emissions. The new BN model for vehicle emission gas diagnosis has been successfully constructed. The results of the system reading when there is an HC content of 217 ppm, the probability value of bad emissions increases to 63.5%. Of the 10 tests performed, the system was able to diagnose them all correctly.
INDUCED DRAFT FAN DOMINANT FREQUENCY DETECTION USING SHORT-TIME FOURIER TRANSFORM METHOD Dedik Romahadi; Wiwit Suprihatiningsih; Gian Villany Golwa; Mahesh Kumar
Jurnal Rekayasa Mesin Vol. 14 No. 2 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i2.1305

Abstract

Weak suction and large vibrations indicate an Induced Draft Fan (IDF) problem. The Fast Fourier Transform (FFT) method cannot be applied to non-stationary vibration signals. Therefore, this study aims to analyze non-stationary vibration signals for IDF vibration signals at start-up so that the source of damage to the IDF can be found. The research process begins with a brief measurement of both bearing locations with horizontal and axial axes. Processing of the vibration signal from the measurement using the FFT method and the Short Time Fourier Transform (STFT). Based on the STFT spectrogram graph for measurements on the horizontal and axial axes, the dominant frequency values are the same. The frequency with the largest amplitude value is at one RPM IDF or 25 Hz. High vibration at 1 RPM is a big indication that the IDF is experiencing unbalance.
Counseling And Making Environment Friendly Cleansing Using Fruit And Flower Extractsin The Framework Of Increasing The Welfare Of Teachers And Preparing Independent Entrepreneurship For SMA-IT Studentsriyadhussholihiin Islamic Boarding School- Cimanuk-Pandegelang G A Arwati, I; Setiyawati, Hari; Villany Golwa, Gian; Suprihatiningsih, Wiwit; Setiany, Erna; Herliansyah, Yudhi; Choiriah, Siti; Suharmadi, Suharmadi; Safira, Safira; Purwaningsih, Sri; Rahayu, Puji; Pratiwi, Riri
International Journal Of Community Service Vol. 3 No. 4 (2023): November 2023 ( Indonesia - Republik Demokratik Timor Leste - Malaysia - USA -
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijcs.v3i4.225

Abstract

This community service is carried out in the context of foreign cooperation where the partner is Professor Dr. Yusliza Mohd Yusoff from Universiti Malaysia Terengganu (UMT). We carry out this community service activity with the theme "Counseling and Making Environmentally Friendly Cleaners Using Lime Extract In the Context of Improving the Welfare of Teachers and Preparing Independent Entrepreneurship for SMA-IT Students at the Riyadhussholihiin-Cimanuk- Pandegelang Islamic Boarding School.” The targets in this activity were teachers and students of class XII SMA-IT at the Riyadhussholihiin-Cimanuk-Pandegelang Islamic Boarding School. They were given training and directly practiced making eco-friendly cleaners using lily extract. The PPM team will also provide assistance until the product can actually be marketed. The initial target for this product is to be used alone and sold to the laundry unit at the Riyadhussholihiin Islamic Boarding school. The next target will be sold to people outside the Riyadhussholihiin Islamic Boarding School. Activities will begin in February 2023 (In Syaa Allah) and end in June or July 2023. However, assistance will continue to be carried out to maintain the continuity of these activities.Professor Dr. Yusliza Mohd Yusoff s as a partner will inspect the field directly or monitor through the Vicon Zoom Meeting. The results of these activities are in the form of increased welfare for teachers obtained from the sale of environmentally friendly cleaning products. Also for students after graduation they can do entrepreneurship to make these products, both students who continue their studies and those who do not continue their studies can still do entrepreneurship. Evaluation can be done by monitoring the location after the community service implementation period is over. Assistance will continue to be carried out to maintain the continuity of the production and sales process.
Use Of Vegetable And Fruit Waste To Make Environmentally Friendly Liquid Fertilizer In The Growth Of The Indonesian Community Of Pinang G. Ayu Arwati, I; Suprihatiningsih, Wiwit; Alva, Sagir; Fitri, Muhammad; Hidayat, Imam; Hasibuan, Sawarni
International Journal Of Community Service Vol. 4 No. 2 (2024): May 2024
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijcs.v4i2.272

Abstract

This community service partner is the Non-Governmental Organization (NGO) PERMAI in Penang. PERMAI members are generally Indonesian workers who work in Penang, some of whom work as home-based food traders. Around where he lives, traders produce waste, including organic waste from cooking activities and leftovers from selling vegetables and fruit. This organic waste rots easily if left alone, causing an unpleasant odor in the surrounding area and causing a smelly and unhealthy environment. One way to handle organic waste, especially rotten fruit and vegetables produced from household or restaurant waste, is by making liquid fertilizer. The implementation method used is two stages, namely: 1) preparation stage; production originating from appropriate technological equipment activities for making liquid fertilizer, discussions and sharing with team members, and 2) the stage of implementing community service at partner locations, distributing questionnaires before and after the exposure. The expected target in this community service activity is to increase the knowledge of the Indonesian working community in Pulau Pinang regarding how to make and the benefits of liquid fertilizer which can be made from everyday household vegetable and fruit waste.
Performance analysis of a three-blade spiral horizontal axis wind turbine with an aspect ratio of 0,116 Wiwit Suprihatiningsih; Abdul Hamid; Adji Nur Fadilah
JTTM : Jurnal Terapan Teknik Mesin Vol 6 No 1 (2025): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v6i1.1291

Abstract

The horizontal-axis wind turbine (TASH) is a wind energy technology that can generate electricity, but its performance still has to be improved. To determine how much an aspect ratio affects wind turbine performance, this study used a horizontal-axis wind turbine with three spiral blades and an aspect ratio of 0,116. The primary performance metrics of horizontal-axis wind turbines with three spiral blades and an aspect ratio of 0,116 are to be measured and examined in this work. Understanding how aspect ratio affects voltage (volts), current (amperes), torque (τ), turbine rotational speed (rpm), and in line with wind speed (ρw) in the process of generating electrical energy is the specific goal. A horizontal-axis wind turbine with three spiral blades and an aspect ratio of 0,116 will be constructed and tested in a controlled setting as part of this research's experimental methodology. The systematic measurement of essential performance characteristics, such as wind speed, torque, turbine rotational speed, voltage, and current, will provide a comprehensive understanding of the wind turbine's ability to generate electrical energy. The TASH experiment 3 spiral blades with an aspect ratio of 0,116 yielded the highest value when tested using a planetary gearbox at 24,23 rpm, 53,09 V of voltage, 1,25 A of electric current, and 30,94 Nm of torque at 5,0 m/s of wind speed. In the calculation of the power coefficient, torque coefficient, and tip speed ratio, the minimum value obtained in the test without a planetary gearbox was 0,0231 at wind speed 2,5 m/s, 0,2183 at wind speed 2,5 m/s, and 0,1059 at wind speed 2,5 m/s. The minimum value is obtained in the TASH test without a planetary gearbox with a rpm value of 105,89 rpm, Voltage 8,60V, Electric Current 0,05A, and Torque 2,85Nm at wind speed 2,5 m/s. A planetary gearbox with a power coefficient of 0,4713 at a wind speed of 4.5 m/s, a torque coefficient of 0,6813 at a wind speed of 4,0 m/s, and a tip speed ratio of 0,7525 at a wind speed of 5,0 m/s was used to test the system and determine the maximum value.
Impact of Extended Intervals on Diesel Engine Performance with 15W-40 DH1 Lubricant Oil Wiwit Suprihatiningsih; Arief Priyanto; Nurato Nurato; Arief Suardi Nur Chairat; Denny Prumanto
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 6, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v6i2.25014

Abstract

Engine lubricant oil is crucial for minimizing friction between moving components within an engine, directly influencing the engine's reliability and lifespan. Determining the appropriate oil replacement intervals is essential, as extending these intervals necessitates more rigorous monitoring of both oil quality and engine condition. This study investigated the performance of SAKAI 15W-40 DH1 engine oil in the SAKAI Vibrating Roller SV526 over varying operational periods: 125 hours, 250 hours, 375 hours, and 500 hours. The research involved analyzing oil samples for viscosity, metal additives, total base number (TBN), and contaminants using Fourier Transform Infrared Spectroscopy (FTIR). Additionally, key engine performance indicators, including fuel consumption, valve clearance, and compression pressure, were measured. The findings revealed a gradual decrease in oil viscosity from 13.48 cSt to 11.56 cSt, approaching the minimum acceptable threshold of 11.45 cSt. Concurrently, the Fe content in the oil increased to 11 ppm, indicating wear, while the valve clearance in cylinder number three expanded to 0.48 mm, and compression pressure dropped from 31 kg/cm² to 28 kg/cm². Despite these changes, the oil remained within the standard operational limits, and the engine continued to perform adequately. However, based on the observed trends, extending the oil replacement interval to 500 hours cannot be conclusively recommended, as the oil's condition and engine performance may begin to decline beyond this point.
Application of Science and Technology in Waste Management, Digital Marketing-Branding Strategies, and Accounting Systems for Environmentally Friendly Fertilisers and Recycled Products IMANINGSIH, Erna Sofriana; SUPRIHATININGSIH, Wiwit; SETIYAWATI, Hari; PUTRA, Rangga Aji; SALMAN, Kina Bahru; ARIYANTO , Satrio Muhammad
Akuntansi dan Humaniora: Jurnal Pengabdian Masyarakat Vol. 3 No. 2 (2024): Akuntansi dan Humaniora: Jurnal Pengabdian Masyarakat (Juni – September 2024)-I
Publisher : Indonesia Strategic Sustainability

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38142/ahjpm.v3i2.1156

Abstract

This PKM was carried out by the UMB team in partnership with the Nurul Yaqin Recitation Group, Parigi Baru Village, Pondok Aren District, South Tangerang, and was funded by DRTPM DIKTI through the PPM Grant Program for the 2024 fiscal year scheme. The Nurul Yaqin Recitation Group has 19 members; apart from being homemakers, they also have informal workers and small home industry businesses. This recitation group carries out its routine activities, namely conducting religious studies under the care of the DKM Masjid Baitul Mukminin. It is active in various community activities and can mobilize other community members through activities. Therefore, they have the potential to be pioneers among grassroots communities to change people's lifestyles for the better through the green movement in their area. The problems experienced by partners are: 1) the accumulation of organic and inorganic waste in the area around their residence has not been appropriately managed, 2) There is no utilization of business opportunities for compost and recycled crafts, 3) There is no accounting application system to record transactions and financial reporting from the production of liquid fertilizer and solid fertilizer and the recycling of inorganic waste. The solutions offered are: 1) Provide training and counseling related to processing organic and inorganic waste into valuable products 2) Provide training related to digital marketing strategies 3) Provide training related to recording transactions and financial reporting through accounting software applications.
Pemodelan Kipas Angin Dengan Penggabungan Benda Geometri Ruang Hasil Deformasi Bola Dan Ruang Suprihatiningsih, Wiwit
Jurnal Teknik Mesin ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ(Journal Of Mechanical Engineering) Vol 10, No 2 (2021)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v10i2.6555

Abstract

Deformasi adalah perubahan bentuk atau ukuran dari sebuah objek. Hasil dari deformasi bola dan tabung akan menghasilkan berbagai bentuk bangun ruang yang dapat digunakan untuk mengkontruksi kipas angin. Di pasaran sudah banyak kipas angin yang bentuknya berasal dari benda-benda geometri ruang seperti tabung, bola, elips dan sebagainya. Penelitian ini mengkontruksi kipas angin yang ada dipasaran dengan menggabungkan benda-benda geometri ruang yaitu bola, tabung serta hasil deformasi bola dan tabung. Tujuan dari penelitian ini adalah mengkontruksi kipas angin dari hasil deformasi bola dan tabung. Penelitian ini menghasilkan kontruksi kipas angin dari berbagai deformasi bola dan tabung dengan 2 tahap yaitu (1) menentukan deformasi bola dan tabung dan (2) menggabungkan hasil deformasi bola dan tabung menjadi sebuah model kipas angin.
PKM Application of Science and Technology for Waste Processing, Digital Marketing and Accounting in Sanphora Village, Tangerang Suprihatiningsih, Wiwit; Ayu Arwati, I G.; Imaningsih, Erna S.; Fikri, Muhammad; Setiawan, Arip
International Journal Of Community Service Vol. 4 No. 4 (2024): November 2024
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijcs.v4i4.297

Abstract

Tanggerang district government, Banten, has established a waste bank program so that waste can have economic value and residents do not throw it away carelessly. From data recorded at the Tangerang City Environmental Service (DLH), there are 361 operating waste bank points. In Sanphora village, especially Cilandak Baru village number 114, RT 04, RW 04. Based on the results of a survey by a team of lecturers and students after meeting with the head of RT 04 named Mr. Sutarman and his wife who served as head of PKK RT 04 named Mrs. Kusmiati with complaints that in the area of Sanpora village there has not been a Waste Bank established, so that a lot of waste is not processed, so that the environment becomes dirty and smells bad, which can cause disease for the residents around it. University and its students through this community service activity will solve the waste problem in Sanphora village in RT04, Tangerang, while this PKM activity will apply appropriate technology to make liquid fertilizer from organic waste, make handicrafts from inorganic waste and introduce simple accounting and digital marketing uses the Smart application to sell PKM products, where it is hoped that the products produced from this activity can be sold so as to improve the standard of living of PKK mothers, especially in RT 04 in Sanphora Village, Tangerang. Keywords: Waste Bank, Appropriate technology, Smart Applications
Co-Authors Abdul Hamid Adji Nur Fadilah Anggara, Fajar Arief Priyanto Arief Suardi Nur Chairat ARIYANTO , Satrio Muhammad Ayu Arwati, I G. Carles, Henry Dedik Romahadi Dedik Romahadi Denny Prumanto Erna Setiany Erna Sofriana Imaningsih Feleke, Aberham Genetu G A Arwati, I G. Ayu Arwati, I Genetu Feleke, Aberham Gian Villany Golwa Hadi Pranoto Hari Setiyawati Hui Xiong Mahesh Kumar Muhammad Fikri Muhammad Fitri, Muhammad Muhammad Idil Fadil Nur Indah, Nur Nurato Nurato Pratiwi, Riri Puji Rahayu PUTRA, Rangga Aji Romahadi, Dedik Safira, Safira Sagir Alva SALMAN, Kina Bahru Sari, Andarany Kartka Sawarni Hasibuan Setiawan, Arip Siti Choiriah Sri Purwaningsih Subekti Subekti Sudarma, Andi Firdaus Suharmadi Suharmadi Supaat Zakaria Swandya Eka Pratiwi, Swandya Eka Villany Golwa, Gian Wahyudi, Haris Winnugroho Wiratman, Manfaluthy Hakim, Tiara Aninditha, Aru W. Sudoyo, Joedo Prihartono Yudha Aji Pramono Yudhi Herliansyah