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All Journal MUSTEK ANIM HA JURNAL SIMETRIK Conference SENATIK STT Adisutjipto Yogyakarta Scientific Journal of Mechanical Engineering Kinematika GUYUB: Journal of Community Engagement YASIN: Jurnal Pendidikan dan Sosial Budaya MASALIQ: Jurnal Pendidikan dan Sains Jurnal Rekayasa Proses
Sandi, Aris
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SIMULASI PERFORMA AERODINAMIKA NACA 1408 PADA APLIKASI TURBIN ANGIN DENGAN VARIASI PANJANG GURNEY FLAP Kumolosari, Eli; Sandi, Aris; Yoanita, Yulia Venti; Pinindriya, Sinung Tirtha; Kurniawan, Dondi
MUSTEK ANIM HA Vol 12 No 02 (2023): MUSTEK ANIM HA
Publisher : Faculty of Engineering, Musamus University, Merauke, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35724/mustek.v12i02.5418

Abstract

Airfoil merupakan bagian dari turbin angin yang memiliki fungsi untuk mengubah energi angin menjadi gaya. Performa aerodinamika airfoil akan mempengaruhi efisiensi turbin angin secara keseluruhan. Salah satu cara untuk meningkatkan performa aerodinamika airfoil adalah dengan menambahkan gurney flap (GF). Pada penelitian ini dilakukan simulasi airfoil NACA 1408 dengan penambahan GF yang panjangnya divariasikan antara 0,12-0,21%c pada sudut serang 0o. Hasil simulasi dengan software Simflow menunjukkan bahwa nilai Cl/Cd tertinggi dihasilkan pada panjang GF 0,18%c yaitu sebesar 20,185. Selain nilai Cd, Cl, dan Cl/Cd, juga dihasilkan visualisasi distribusi kecepatan dan tekanan udara yang melewati airfoil. Dari hasil visualisasi tersebut terlihat bahwa hasil simulasi sesuai dengan Hukum Bernoulli, yaitu kecepatan bagian bawah airfoil lebih rendah dari bagian atasnya, yang mengakibatkan tekanan bagian bawah lebih tinggi dari bagian atasnya, sehingga menghasilkan gaya angkat (lift force). Kata kunci: Turbin angin, airfoil, NACA 1408, simulasi, Cl/Cd
Pengaruh variasi parameter cetak dan post process terhadap tingkat kekerasan spesimen hasil cetak tiga dimensi berbasis stereolithography (SLA) Sandi, Aris; Mahardika, Muslim; Cahyono, Sukmaji Indro; Salim, Urip Agus; Pratama, Juan; Arifvianto, Budi
SENATIK STT Adisutjipto Vol 7 (2022): Generation Z's Participation in Aerospace
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/senatik.v7i0.454

Abstract

Keunggulan 3D printing stereolithography (SLA) dalam mencetak spesimen dengan geometri yang komplek dan kekasaran permukaan yang rendah menjadikan teknologi ini semakin banyak digunakan di berbagai bidang. Terlepas dari keunggulan yang dimiliki, sifat mekanis spesimen hasil cetak SLA yang rendah menjadi salah satu kekurangan utamanya. Dari beberapa penelitian telah dilakukan pengujian mekanis yang menunjukkan bahwa parameter cetak mempengaruhi sifat mekanis spesimen hasil cetak. Pada penelitian ini, pengaruh variasi parameter cetak dan post process pada kekerasan spesimen hasil cetak 3D printer SLA diteliti. Variasi parameter cetak pada penelitian ini antara lain build orientation (0o dan 90o), layer thickness (0,05, 0,1, 0,15, dan 0,2 mm), dan curing time (10, 20, 30, dan 40 menit). Hasil penelitian menunjukkan bahwa parameter cetak dan post process terbukti mempengaruhi tingkat kekerasan spesimen hasil cetak. Tingkat kekerasan tertinggi yang bernilai 87,9 Shore D didapatkan pada variasi build orientation 0° dengan layer thickness 0,05 mm dan curing time 40 menit.
PEMODELAN DUA DIMENSI THERMO-ELASTOVISKOPLASTIS PROSES PEMBENTUKAN ALUMINIUM DENGAN METODE ELEMEN HINGGA Kurniawan, Wahyu; Sandi, Aris; Andre Setyawan, Martin; Tito Fismatika, Akhmad; As’ari, Farhan
JURNAL SIMETRIK Vol. 14 No. 1 (2024)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/js.v14i1.2363

Abstract

Sifat mampu bentuk berhubungan dengan regangan maksimum yang dapat dicapai dalam satu tahap proses deformasi. Aluminium dalam kondisi normal mempunyai sifat mampu bentuk yang cukup baik meski tak sebaik baja ringan, namun demikian sifat mampu bentuk ini bisa ditingkatkan dengan menambah temperatur selama proses pembentukan. Penelitian ini bertujuan memodelkan dua dimensi thermo elasto-viskoplastis pada proses pembentukan sederhana, memvisualisasikan hasil pemodelan, mengetahui pengaruh parameter utama pemodelan terhadap analisa tegangan-regangan, membandingkan (validasi) hasil pemodelan program Fortran dengan pemodelan software komersial yang telah teruji. Hasil simulasi distribusi temperatur menunjukkan hasil yang valid dengan selisih sekitar 0.28%. Hasil validasi pengaruh temperatur terhadap displacement dan tegangan beam menghasilkan data yang setara yitu selisih masing-masing -0.25 mm dan 5.19 MPa.
ANALISIS KINERJA SAYAP ORNITHOPTER SEPERTI-BURUNG SEDERHANA Sandi, Aris; Sulistijono, Indra Adji; Ningrum, Endah Suryawati
Scientific Journal of Mechanical Engineering Kinematika Vol 8 No 2 (2023): SJME Kinematika Desember 2023
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

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

Abstract

An ornithopter or flapping-wing is a robot that resembles the wings’ mechanics of birds, insects or bats. The application of this type of UAV ranges from photography to the military. This study's main discussion is designing and constructing the ornithopter wing mechanical system with a double-joint wing flapping system. The novelty submitted in this study was the material used to construct the ornithopter wing, namely rod carbon for the skeleton and plastic for the wing. The aim was to discover the aerodynamic performance of the wing and the whole ornithopter. The study results showed that for single wing, the value of CL/CD was high. However, the ornithopter design should be improved to get the thrust force higher than drag force. In addition, the velocity starts to increase stably at throttle 33.3%. Furthermore, for the ornithopter, it was found that the lift force was greater than the down force, so that, theoretically, the robot could fly. The largest lift occurred when the frequency values were 0.88 and 0.97
Pengukuran Konduktifitas Termal pada Bahan Kayu, Kapur, dan Besi Annas, Muhamad Azwar; Chasanah, Uswatun; Sandi, Aris
MASALIQ Vol 3 No 4 (2023): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v3i4.1528

Abstract

Measurement Of Thermal Conductivity In Wood, Lime And Iron have been carried out with the aim of determining the termal conductivity of a material and knowing the factors that affect the termal conductivity of a material. The tools and materials in this experiment were two metal cylinder conductors, the test material (in the form of a cylinder) in the form of cotton wool, iron and wood, an electric stove, a pyrometer, water, clamps and a stopwatch with the stove working steps turned on, piling up the test material placed in the middle of the metal conductor, heated for 10 minutes, the temperature was measured with a pyrometer on the bottom surface, the metal surface below the test material, the metal surface above the test material, and the top surface. Note, the test material and metal conductors are cooled with water and repeated for the other test materials. The working principle used is termal convection termal conduction, temperature measurement. The results of the experiment showed that the value of the termal conductivity was 27.13 W/m°C for wood, 18.6 W/m°C for lime, and 60.6 W/m°C for iron. As for the conductivity is influenced by the temperature difference of each surface of the material, the type of material, the cross-sectional area.
Rancang Bangun Automatic Weighing System untuk Aplikasi Mesin Mixer Fismatika, Akhmad Tito; Sandi, Aris; Setyawan, Martin Andre; As'ari, Farhan; Kurniawan, Wahyu
YASIN Vol 5 No 2 (2025): APRIL
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/yasin.v5i2.5007

Abstract

The greater human need for livestock continues to increase along with increasing population growth. Therefore, optimization is needed in the livestock processing process, while some livestock equipment today is still classified as conventional, which still uses human power and is manual in nature, for example the animal feeding system. With the development of technology that can be applied to the shutter, it is necessary to optimize animal feeding systems such as automatic weighing systems. The automatic weighing system is one of the innovations that supports the performance of a mixing tool (mixer) which is designed to mix unused plantation industry waste such as sugar cane shoots, palm fronds, bagasse, palm oil meal, etc. in the animal feeding system. This research begins with a search for related literature, followed by making a tool design which then based on the design that has been made this tool can be realized accompanied by testing whether this tool is in accordance with the desired specifications. The progress of this research is in the stage of making schematic wiring diagrams for making printed circuit board (PCB) lines. Next, all electronic components used on the bread board are transferred to the PCB and then PCB prototyping testing is carried out to analyze wiring path errors on the PCB. The next stage is to apply a load to the load cell to ensure the correctness of the program/coding that has been created and the accuracy of the reading results for the given load. Based on the tests that have been carried out, the measurement results are still within tolerance so that this Automatic Weighing System tool is suitable for use. As a final stage, a mechanical system will be created to apply an automatic weighing system that uses this load cell on each leg of the mixer machine.
Peningkatan Taḥsîn al-Qur’ân melalui Hafalan Kitab Tuhfat Al-Athfal di TPQ. Assalafiyah, Darul Furqon, dan Himmatul Qur’an Probolinggo Huda, Nurul; Ibed, Zainul; Hasan, Ahmad Fauzi; Basari, Sulthon Zainul; Matin, Robert Danil; Sandi, Aris
GUYUB: Journal of Community Engagement Vol 6, No 1 (2025): Maret
Publisher : Universitas Nurul Jadid

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33650/guyub.v6i1.10356

Abstract

The obligation to learn proper Quranic recitation (taḥsīn al-Qur'ān) according to Tajweed rules applies to all Muslims. However, many still struggle to read the Qur'an correctly. The main challenges faced by taḥsīn al-Qur'ān learners include understanding recitation rules, memorizing Tajweed laws, and correctly applying makhraj and ṣifat of letters. These difficulties are also experienced by students at TPQ Assalafiyah, Darul Furqon, and Himmatul Qur’an in Alastengah Village. This community service program applies the Participatory Action Research (PAR) approach to enhance students' taḥsīn al-Qur'ān skills through learning based on the Tuhfatul Athfal Tajweed book. The program actively involves students, teachers, and facilitators in problem identification, planning, implementation, and evaluation. The methods include repetitive memorization of nazam (drilling), recitation demonstrations, and classical exercises over one week. Evaluation follows Bloom’s Taxonomy, covering cognitive, affective, and psychomotor aspects. The results indicate that the participatory approach using PAR effectively improves students’ understanding and skills in taḥsīn al-Qur'ān. Students find it easier to comprehend Tajweed rules, recognize makhraj and ṣifat of letters, and apply them correctly in Quranic recitation. Thus, this method serves as an effective alternative for enhancing Quranic learning quality in TPQ settings.
Pemanfaatan tandan kosong kelapa sawit dari produksi pabrik kelapa sawit Cikasungka sebagai alternatif pembuatan tinta printer Gunawan, Dandi Syahrul; Pardosi, Ridho; Widodo, Timbul; Iqbal, Muhammad; Africia, Nabillah Dwi; Sandi, Aris; Saputri, Lestari Hetalesi
Jurnal Rekayasa Proses Vol 18 No 2 (2024): Volume 18, Number 2, 2024
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.15659

Abstract

Tandan Kosong Kelapa Sawit (TKKS) merupakan limbah organik yang sangat banyak dijumpai diperkebunan kelapa sawit. TKKS memiliki nilai guna yang cukup tinggi karena terdapat kandungan serat di dalamnya. Namun, pemanfaatan TKKS di Pabrik Kelapa Sawit (PKS) masih sebatas sebagai pupuk. Oleh karena itu, pada riset ini dilakukan pemanfaatan kelapa sawit sebagai bahan baku pigmen organik untuk pembuatan tinta printer. Pigmen organik pada riset ini dibuat melalui beberapa tahapan, antara lain penghalusan bahan dengan parang, pengeringan dengan sinar matahari, proses karbonisasi (pengarangan) pada suhu 450oC menggunakan serangkaian alat karbonisasi, penghalusan arang (karbon) TKKS, pengayakan serbuk karbon dengan screen mesh T200 dan tahap pembuatan tinta printer dilakukan melalui pencampuran karbon TKKS dengan aquadest, alkohol, dan gum arab. Tinta yang dihasilkan akan diuji viskositas, uji transmitansi cahaya, uji adhesi, uji densitas, dan uji performa tinta. Hasil riset ini menunjukkan bahwa produk tinta printer terbaik didapatkan pada komposisi massa 2 g karbon dengan 5 mL alkohol, yang dicampur dengan bahan perekat berupa 3,5 g gum arab dalam 22,5 mL aquadest. Hasil uji cetak, transmitansi dan adhesi telah sesuai dengan Standar Nasional Indonesia (SNI) namun untuk uji viskositas perlu diteliti lebih lanjut.
Co-Authors Africia, Nabillah Dwi Andre Setyawan, Martin Annas, Muhamad Azwar As'ari, Farhan As’ari, Farhan Basari, Sulthon Zainul Budi Arifvianto Eli Kumolosari Endah Suryawati Ningrum Fismatika, Akhmad Tito Gunawan, Dandi Syahrul Hasan, Ahmad Fauzi Ibed, Zainul Indra Adji Sulistijono Kurniawan, Dondi Matin, Robert Danil Muhammad Iqbal Muslim Mahardika Nurul Huda Pardosi, Ridho Pinindriya, Sinung Tirtha Pratama, Juan Salim, Urip Agus Saputri, Lestari Hetalesi Setyawan, Martin Andre Sukmaji Indro Cahyono, Sukmaji Indro Tito Fismatika, Akhmad Uswatun Chasanah Wahyu Kurniawan Widodo, Timbul Yoanita, Yulia Venti