Article Per Year (5 Year)
p-Index From 2021 - 2026
2.875
P-Index
This Author published in this journals
All Journal JURNAL PENDIDIKAN TAMBUSAI Journal on Education Jurnal Ilmiah Profesi Pendidikan Scientific Journal of Mechanical Engineering Kinematika Teknomekanik Journal of Mechanical Engineering Jurnal Vokasi Mekanika MASALIQ: Jurnal Pendidikan dan Sains TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Journal of Sciencce Technology and Visual Culture Greensusmater
Fitrah Qalbina
Universitas Negeri Padang
Religion Arts Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

Published : 19 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 19 Documents
Search

 1   2 
STUDI PENGARUH DINAMIKA TUMBUKAN MULTIPLE DROPLETS TERHADAP NILAI SPREADING RATIO PADA PERMUKAAN BIDANG PANAS YANG MIRING Fitrah Qalbina; Deendarlianto Deendarlianto; Indarto Indarto; Teguh Wibowo
Journal of Mechanical Engineering Vol 5, No 1 (2021): Journal of Mechanical Engineering
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/jom.v5i1.3944

Abstract

ABSTRAKSpray cooling merupakan aplikasi dari droplets yang digunakan sebagai salah satu teknik pendinginan. Pemanfaatan dari multiple droplets ini banyak dikaji sebagai sistem pendinginan pada peralatan elektronik dan pembuatan material quenching. Dinamika tumbukan multiple droplets pada permukaan bidang miring yang dipanaskan akan dikaji pada penelitian ini. Material uji yang digunakan adalah stainless steel 304 . Temperatur permukaan yang diamati adalah 120 ºC, 180 ºC dan 220 ºC pada bilangan Weber medium 70 dengan variasi bidang kemiringan adalah  sebesar 10º, 20º dan 30º. Dinamika droplet selama tumbukan diamati menggunakan high-speed camera dengan kecepatan 4000 fps kemudian hasilnya diolah menggunakan image processing. Telah diperoleh hasil bahwa spreading ratio tertinggi terjadi saat temperatur permukaan 180 ºC pada  sudut kemiringan 30 º dan terendah pada temperatur 220 ºC. Fenomena secondary droplet dapat meningkatkan nilai spreading ratio. Adapun fenomena bounching terjadi pada temperatur 220 ºC.Kata kunci: Spray cooling, multiple droplets, stainless steel, image processing, spreading ratio ABSTRACTSpray cooling is an application of the use of droplet on a cooling system. Spray cooling is usually used in a cooling system of electronic devices, and material quenching. In this study, the dynamic behavior of multiple droplets impacting into inclined hot surfaces will be investigated. The material used in the present work is stainless steel 304 with the temperature 120 ºC,180 ºC,dan 220 ºC   at medium Weber number 70. The inclined surface varied at  10º, 20º dan 30º.  The droplet dynamics during the impact have been observed using high-speed camera with the frame rate of 4000 fps then the results were analized by using image processing technique. The result of this study shows that The presence of second droplets and the higher of inclined surfaces can increases value of spreading ratio ,it is noticed that at 180°C, droplet impacting at 30º showed the highest spreading ratio and at 220 ºC is the lowest. The presence of secondary droplet can increases value of spreading ratio and  bouncing phenomena occurs at 220 ºC. Keyword: Spray cooling, multiple droplets, stainless steel, image processing, spreading ratio
ANALISIS PENGARUH ADSORBENT PADAT TERHADAP KUALITAS KANDUNGAN BIOGAS Harmiansyah; Lathifa Putri Afisna; Sugatra Dwi Atmaja; Fitrah Qalbina; Rustam Efendi
Scientific Journal of Mechanical Engineering Kinematika Vol 7 No 2 (2022): SJME Kinematika Desember 2022
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v7i2.238

Abstract

Jumlah penduduk semakin besar setiap tahun dengan seiring pertumbuhan penduduk yang meningkat, dengan pertumbuhan penduduk maka penggunaan senergi fosil menjadi tinggi sehingga ketersediaan energi semakin terbatas. Energi terbarukan merupakan salah satu cara dapat mengatasi ketersediaan energi yang semakin berkurang, salah satunya yaitu biogas. Biogas merupakan bahan bakar gas dapat diperbaharui (renewable) yang dihasilkan dari proses fermentasi bahan organik oleh bakteri anaerob yang hampa udara, biogas juga termasuk kategori energi yang ramah lingkungan dan mudah digunakan. Tujuan penelitian ini adalah mengoptimalkan kinerja biogas dengan menggunakan variasi adsorbent. Optimalisasi kinerja biogas dapat dilakukan dengan pemurnian kandungan biogas menggunakan metoda adsorpsi. Pada penelitian ini menggunakan adsorbent zeolit alam dan karbon aktif dengan 3 variasi massa yaitu 250, 500 dan 750 gram. Berdasarkan hasil pengujian yang telah dilakukan, adsorbent berpengaruh terhadap kandungan biogas, semakin banyak adsorbent yang digunakan maka semakin besar gas CH4 (pada 250 gram sebesar 46,29%, 500 gram sebesar 48,33%, dan 750 gram sebesar 51,84%) diikuti menurunnya CO2 (pada 250 gram sebesar 47,38%, 500 gram sebesar 47,47%, dan 750 gram sebesar 43,02%) dan semakin bagus pula kualitas biogas. Tekanan minimum yang dibutuhkan untuk melewati adsorbent sebanyak 750 gram adalah 7 mbar (700 Pa) atau tekanan minimum yang diberikan oleh floating drum.
Desain dan Analisis Mesin Press Komposit Kapasitas 20 Ton Muhammad Syaukani; Fajar Paundra; Fitrah Qalbina; Ilham Dwi Arirohman; Putty Yunesti; Sabar Sabar
Journal of Science, Technology, and Visual Culture Vol 1 No 1 (2021): Juli 2021
Publisher : Jurusan Teknologi Produksi dan Industri, Institut Teknologi Sumatera

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

Abstract

Composite is a combination of several or more different materials, which produce better properties than their composition properties. The process of making composites can be done with a pressing method which can reduce voids. This pressing method can use a hydraulic press machine. This study aims to design and analyze a hydraulic press machine with a capacity of 20 tons. The design process begins with designing a 3D model using Solidwork Software. Numerical simulation using the finite element method by providing several variations in pressure loads ranging from 5-20 MPa. The results of the analysis show that the maximum von Mises stress is 79.70 MPa with a maximum deformation of 0.0176 mm and the smallest value of safety factor is 2.595. Based on these results, the press machine design is claimed to be safe to operate.
Pengaruh Aplikasi Skigrem (Smart Kids With Great Media) Terhadap Kemampuan Menyimak Pada Anak Usia 5-6 Tahun Di TK Pautan Hati Kabupaten Sijunjung Sumatera Barat Fitrah Qalbina; Zulkifli N; Rita Kurnia
Journal on Education Vol 6 No 3 (2024): Volume 6 Nomor 3 Tahun 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i3.5734

Abstract

The Skigrem (smart kids with great media) application aims to determine the listening abilities of children aged 5-6 years before and after being treated with the Skigrem application at Pautan Hati Kindergarten, Sijunjung Regency, West Sumatra. This type of research is experimental research using a one group pretest-posttest design model.The research population was 11 children aged 5-6 years at Pautan Hati Kindergarten, Sijunjung Regency, West Sumatra. The sample used was all children, namely 11 children. The data analysis technique used is the t test. Based on the results of the research that has been carried out, the researchers concluded that children's listening ability before being given treatment was 38.64%, then after being given treatment in class increased by a percentage of 75.00%. Based on the test results, it is known that there is an influence of the skigrem application (smart kids with great media) on the listening ability of children aged 5-6 years at Pautan Hati Kindergarten, Sijunjung Regency, West Sumatra.
Pemanfaatan Kotoran Sapi Menjadi Biogas dalam Mendukung Green Environment Farm pada CV Sanjaya Farm Afisna, Lathifa Putri; Guguk, Kardo Raja; Qalbina, Fitrah; Syaukani, Muhammad; Paundra, Fajar
TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Vol 1 No 2 (2021): TeknoKreatif: Jurnal Pengabdian kepada Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LP2M), Institut Teknologi Sumatera, Lampung, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/teknokreatif.v1i2.516

Abstract

Limbah kotoran sapi di CV Sanjaya Farm masih banyak menimbulkan masalah bagi pihak peternak maupun warga sekitar. Hal ini dikarenakan pemanfaatan limbah kotoran sapi yang belum maksimal sehingga menimbulkan penumpukan di area kandang dan terjadi polusi udara yang mengganggu warga sekitar. Salah satu alternatif pemanfaatan limbah kotoran sapi adalah sebagai bahan biogas. Hasil dari diskusi dengan pihak peternak maka dibuat reaktor skala rumah tangga untuk mengolah limbah kotoran sapi menjadi biogas menggunakan reaktor portable dengan sistem semi kontinu. Pemanfaatan biogas dapat digunakan oleh peternak dan warga sekitar sebagai pengganti LPG untuk memasak dan menjadi contoh peternakan yang dapat pengelolaan kotoran sapi menjadi biogas.
Hubungan Hasil Belajar Produk Kreatif dan Kewirausahaan (PKK) dengan Kesiapan Berwirausaha Siswa Teknik Pemesinan SMKS Dhuafa Padang Wahyudi, Wahyudi; Sari, Delima Yanti; Purwantono, Purwantono; Qalbina, Fitrah
MASALIQ Vol 4 No 6 (2024): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v4i6.3883

Abstract

SMKS Dhuafa Padang equips students with entrepreneurial knowledge and skills through the subject of Creative Products and Entrepreneurship (PKK). However, students' entrepreneurial readiness is still low. This study examines the factors behind it, such as the narrowing of employment opportunities, entrepreneurship can create jobs, PKK has an influence on the entrepreneurial spirit, entrepreneurship learning has an important role in improving students' entrepreneurial readiness. This study uses a quantitative correlational type to determine the relationship between PKK and Entrepreneurial Readiness. Data collected in the form of numbers and analyzed using statistics. The research method used is associative quantitative, which aims to determine the influence and relationship between PKK and Entrepreneurial Readiness. This study found that PKK has a relationship with student entrepreneurship readiness at SMKS Dhuafa Padang. This is evidenced through the T test and F test, where the value of Sig. 0.05 and the value of tcount ttable (in the T test) and the value of fcount ftable (in the F test) indicates a relationship.In conclusion, PKK proved to play an important role in increasing students' interest in entrepreneurship, with 15.1% influenced by PKK and the rest by other factors.
Analisis Aerodinamika Rancangan Body Kendaraan Prototype Bermesin Diesel Menggunakan ANSYS Fluent Dinul, Fadhilah Ikhsan; Putra, Randi Purnama; Refdinal, Refdinal; Qalbina, Fitrah
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 1 (2025): Jurnal Vokasi Mekanika
Publisher : Departemen Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i1.780

Abstract

Transportation industry is the third largest energy consumer, the focus on energy saving in vehicles and reducing exhaust emissions is major concern. Aerodynamics is one of the important subjects in vehicle engineering today. The more aerodynamic the vehicle, the lighter the engine performance, which can reduce fuel usage. This study aims to examine the effect of vehicle body design on the value of drag coefficient (Cd), lift coefficient (), and the ratio between lift coefficient and drag coefficient (/Cd). The method in this research is a numerical method that utilizes the CFD feature in the Ansys Fluent 2024 R1. The drag coefficient value with a speed of 10 m/s is 0.0155, a speed of 20 m/s is 0.0110, and a speed of 30 m/s is 0.0083. While the value of the lift coefficient with a speed of 10 m/s is obtained worth 0.0177, a speed of 20 m/s worth 0.0358, and a speed of 10 m/s worth 0.0455. Then the vehicle body design obtained the value of the /Cd ratio with a speed of 10 m/s worth 1.1419, a speed of 20 m/s worth 3.2545, and a speed of 30 m/s worth 5.4819. The conclusion this research is that the design of the vehicle body has a drag coefficient value decreasing as the speed increases and conversely the lift coefficient value increases. Based on the /Cd ratio value, it indicates that the vehicle body design is an aerodynamic design because the higher /Cd ratio, the more efficient the vehicle performance.
Analisis Pengaruh Model Turbulen dalam Simulasi CFD Centrifugal Fan menggunakkan Ansys Santoso, Bagas; Sari, Delima Yanti; Nurdin, Hendri; Qalbina, Fitrah
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 1 (2025): Jurnal Vokasi Mekanika
Publisher : Departemen Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i1.811

Abstract

The study was conducted to determine the airflow in the backward type centrifugal fan using Computational Fluid Dynamics (CFD) simulation. This type of fan is often used in various industries due to its high efficiency in moving air or gas. In CFD simulation, the selection of the right turbulent model is very important to obtain simulation results that are reliable, efficient, and relevant to real conditions. The study used four different turbulent models to look at their effects on pressure distribution, flow velocity, and fan efficiency. The turbulent models used are k-ε Standard, k-ε RNG, k-ε Realizable and k-ω SST. The goal was to find the most optimal turbulent model of the centrifugal fan around the impeller. The impeller has an angle (,β-1.) of 35,260 with a rotation speed of 301,069 rad/s. The simulation was carried out by meshing about 500,000 mesh elements for a balance between accuracy and computing needs. Validation was carried out by comparing the simulation results of Ansys Student R1 2024 and Solidwork. Of the four turbulent models tested, k-ε RNG provided the most accurate results, with an efficiency difference of only 1.3% compared to Solidworks. This model manages to capture better variations in pressure and flow velocity, especially in turbulent areas and around the impeller. These results show that the k-ε RNG turbulent model provides closer results than other models. These findings are important for the optimization of centrifugal fan design and emphasize the importance of selecting the right turbulent model in numerical simulations.
Analisis Aerodinamika Rancangan Body City Car dengan Penambahan Spoiler Belakang Menggunakan Ansys Fluent Ananda, Yoga Rizki; Putra, Randi Purnama; Fernanda, Yolli; Qalbina, Fitrah
MASALIQ Vol 5 No 2 (2025): MARET
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i2.4976

Abstract

An increase in the number of fossil fuel vehicles leads to increased energy consumption and exhaust emissions, which have a negative impact on the environment. One way to improve fuel efficiency is to optimize vehicle aerodynamic design, especially through the addition of a rear spoiler. This study aims to analyze the effect of city car body design with the addition of a rear spoiler on vehicle aerodynamic characteristics, such as drag coefficient, lift coefficient, and the ratio between the two. The research method used is numerical simulation with Computational Fluid Dynamics (CFD) using Ansys Fluent 2024 R1 Student Version software. The simulation was performed on a 3D city car model with airflow velocity variations of 10 m/s, 20 m/s, and 30 m/s. The data obtained were analyzed using grid independency analysis techniques to ensure the accuracy of the simulation results. The results show that the addition of a rear spoiler is able to reduce the lift coefficient thereby improving vehicle stability, although there is a slight increase in the drag coefficient as the airflow velocity increases. The negative ratio between the lift coefficient and drag coefficient indicates that the lift is downforce, which contributes to vehicle stability at high speeds. A suggestion from this research is the optimization of the spoiler shape to further reduce the drag coefficient without compromising vehicle stability. Further research can be conducted by testing variations in spoiler design and lighter materials for better aerodynamic efficiency.
Faktor-Faktor Kesulitan Belajar Pembuatan Pola Praktis Pada Mata Pelajaran Pembuatan Pola Tata Busana di SMKN 1 Ampek Angkek Qalbina , Fitrah; Ernawati, Ernawati
Jurnal Ilmiah Profesi Pendidikan Vol. 10 No. 1 (2025): Februari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jipp.v10i1.3196

Abstract

Penelitian ini dilatar belakangi oleh adanya permasalahan kesulitan belajar yang dialami oleh siswa kelas XI Tata Busana tahun ajaran 2023/2024 pada mata pelajaran pembuatan pola. Penelitian ini bertujuan untuk mengetahui (1) faktor-faktor penyebab kesulitan belajar pembuatan pola parktis pada mata pelajaran pembuatan pola di SMKN 1 Ampek Angkek ditinjau dari faktor internal yang meliputi sikap terhadap  belajar, motivasi dan rasa percaya diri (2) faktor-faktor penyebab kesulitan belajar pembuatan pola praktis pada mata pelajaran pembuatan pola di SMKN 1 Ampek Angkek ditinjau dari faktor eksternal yang meliputi  keluarga, sekolah dan masyarakat. Metode yang digunakan dalam penelitian ini adalah penelitian deskriptif kuantitatif. Populasi pada penelitian ini adalah seluruh siswa kelas XI Tata busana SMKN 1 Ampek Angkek tahun ajaran 2023/2024 yang berjumlah 54 siswa. Teknik pengambilan sampel dengan nonprobability sampling (sampel jenuh), sehingga seluruh populasi dijadikan sampel. Teknik pengumpulan data menggunakan angket dengan skala likert yang telah diuji validitas dan realibilitasnya. Selanjutnya teknik analisis data yang digunakan adalah analisis statistik deskriptif menggunakan aplikasi SPSS dan microsoft excel. Hasil penelitian menunjukkan bahwa (1) faktor kesulitan belajar ditinjau dari faktor internal adalah sebagai berikut: indikator sikap terhadap belajar sebesar 43% atau 23 siswa dalam kategori sedang, indikator motivasi sebesar 41% atau 22 siswa dalam kategori sedang dan indikator rasa percaya diri sebesar 54%. Atau 29 siswa dalam kategori sedang (2) faktor kesulitan belajar ditinjau fari faktor eksternal sebagai berikut:  indikator keluarga sebesar 37% atau 20 siswa dalam kategori tinggi, infikator sekolah sebesar 39% atau 21 siswa dalam kategori sedang dan indikator masyarakat sebesar 41%  atau 22 siswa dalam kategori rendah.
Co-Authors Ambiyar, Ambiyar Ananda, Yoga Rizki Arirohman, Ilham Dwi Arwizet Arwizet, Arwizet Budi Syahri Deendarlianto Delima Yanti Sari Dinul, Fadhilah Ikhsan Dori Yuvenda Ernawati Ernawati Faisal , Amir Fajar Paundra Fauza, Anna Niska Febri Prasetya Guguk, Kardo Raja Hamonangan M , Felix R.M. Hamonangan M Harmiansyah Hendra, Carlen Muhammad Indarto Indarto Irzal, Irzal Kelvin Permana Saputra, Dwi Kurniawan, Badri Lathifa Putri Afisna Muhammad Syaukani Nurdin Hendri Paundra, Fajar Purnama Putra, Randi Purwantono, Purwantono Putra, Randi Purnama Putty Yunesti Ramadan, Ryan Ramadhan, Raihan Refdinal, Refdinal Rita Kurnia Rustam Efendi Sabar Sabar Santoso, Bagas Saputro , • Adhitya Gandaryus Sugatra Dwi Atmaja Surya, Fajar Teguh Wibowo Wahyudi Wahyudi Wulansari, Rizky Ema Yolli Fernanda Yudistira , Hadi Teguh Yudistira Zikri, Khairul Zulkifli N