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sulanjari
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Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Pengaruh Dolomite Terhadap Sifat Fisika dan Kimia Keramik Setyowati, Agustina Dyah; Sulanjari; Irawan, Ade
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 5 No. 2 (2024): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK)
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/JIPT.v5i2.39793

Abstract

The ceramic industry material has experienced rapid development. This development includes advancements in structure, composition, and physical and mechanical properties. One effort to enhance mechanical strength is by mixing ceramic materials with other materials available in the market. The quality of ceramics is a crucial factor to consider, one of which is by examining the physical and chemical properties of ceramics. Dolomite is one of the materials that significantly impacts ceramic formation; therefore, experiments need to be conducted to determine the extent of dolomite's influence on ceramic quality. Tests are carried out to ascertain the effect of dolomite amount on the characterization of ceramics. The characterization of ceramic samples with added dolomite in various amounts includes chemical and physical properties. The chemical properties of ceramic materials are determined through chemical analysis using X-Ray Fluorescence to identify the elements present in the ceramic materials. Physical properties can be determined by measuring shrinkage, compressive strength, and bending. The obtained chemical and physical properties can be used to determine the appropriate composition of dolomite as a ceramic material to achieve good ceramic quality. The correct material composition will produce ceramic products that are harder and stronger, making them less prone to breaking when heated. The chemical analysis results of dolomite using X-Ray Fluorescence show that the main elements are CaO and MgO with mass percentages of 69.41% and 29.37%, respectively. The more dolomite added to the ceramic raw material, the higher the content of CaO and MgO. The physical properties of ceramics with the addition of 2.50% dolomite in the ceramic material result in a dry shrinkage of 3.37%, firing shrinkage of 8.87%, compressive strength of 74.21 MPa, and bending of 22.76%.
Analisis Pengaruh Bukaan Katup terhadap Debit Air, Putaran Turbin, dan Daya Keluaran pada Turbin Archimedes Screw Sulanjari; Yamin, Muhamad Miftahul; Rohmat, Nur; Setyowati, Agustina Dyah; Irawan, Ade
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 6 No. 2 (2025): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK)
Publisher : Universitas Pamulang

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

Abstract

Energi air merupakan salah satu sumber energi terbarukan yang memiliki potensi besar di Indonesia. Pembangkit Listrik Tenaga Mikrohidro (PLTMH) merupakan jenis pembangkit listrik berukuran kecil yang menggunakan energi air sebagai sumber daya, baik dari sungai, saluran irigasi, maupun air terjun alami. PLTMH menghasilkan listrik dengan memanfaatkan perbedaan tinggi permukaan air (head) dan debit air yang tersedia. Penelitian ini bertujuan untuk menganalisis pengaruh bukaan katup terhadap debit air, putaran turbin, dan daya keluaran turbin Archimedes screw. Bukaan katup yang digunakan adalah 25°, 40°, 55°, 70°, dan 85°, dengan volume air sebesar 20 liter. Hasil yang diperoleh menunjukkan bahwa semakin besar bukaan katup, semakin besar pula debit air yang dihasilkan, yaitu secara berturut-turut 0,00115 m³/s, 0,00311 m³/s, 0,00429 m³/s, 0,00528 m³/s, dan 0,00802 m³/s. Semakin besar bukaan katup, semakin besar pula putaran turbin yang dihasilkan, dengan nilai tertinggi sebesar 180,3 rpm. Daya keluaran juga meningkat seiring dengan bertambahnya bukaan katup, kecuali pada bukaan 85°. Nilai daya keluaran tertinggi adalah 5,35 watt pada bukaan katup 70° dengan debit air 0,00528 m³/s.
Co-Authors Ade Irawan Nur Rohmat setyowati, agustina dyah Simbolon, Kiki Tristiawanti Wicaksana, Ilyas Rasyid Yamin, Muhamad Miftahul