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All Journal SCIENCE TECH: Jurnal Ilmiah Ilmu Pengetahuan dan Teknologi Jurnal Inovasi Teknologi Terapan
Zulfan Yus Andi
Politeknik Manufaktur Negeri Bangka Belitung
Agriculture, Biological Sciences & Forestry Chemistry Computer Science & IT Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Desain Cetakan Paving Blok Hexagonal Bagas Adi Saputro; Muhammad Yunus; Zulfan Yus Andi
Jurnal Inovasi Teknologi Terapan Vol. 4 No. 1 (2026): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v4i1.396

Abstract

Plastic molds offer lighter weight, ease of design modification, and the ability to produce very large quantities of products due to the ability to cast with multiple molds simultaneously. However, they are susceptible to thermal deformation due to pressure during the casting process. This condition can cause dimensional deviations outside the tolerance limits set by the British Standards Institution (BSI), which is ± 2 mm. This research focuses on the design analysis of hexagonal paving block molds made of Polypropylene (PP) using the SolidWorks Simulation approach to evaluate the effect of variations in the number of reinforcements (ribs) on the deformation and stiffness of the mold design. Paving block models have four design configurations: no ribs, one rib, two ribs, and three ribs. The analysis results show that all designs are still within the maximum deformation tolerance limit, but increasing the number of ribs significantly increases stiffness and decreases total deformation. The three-rib configuration produces a minimum deformation of 0.5059 mm, making it the most optimal design in maintaining mold dimensional stability. This research provides a scientific basis for the development of optimal, precise, and BSI-standardized paving block molds with Polypropylene material for mass production of paving blocks.
Analisis Debit, Head, dan Tekanan Air Tandon untuk Energi Alternatif Berbantuan Teknologi Water Flow Novitasari; Zulfan Yus Andi; Harwadi; Zulfitrianto; Ramli; Zanu Saputra; Muhammad Raihan As Shadqi; Sumi Lasari
Science Tech: Jurnal Ilmu Pengetahuan dan Teknologi Vol 12 No 2 (2026): August
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/st.vol12.no2.a22322

Abstract

The use of household water tanks is typically limited to storing water pumped from wells, though positioning a tank at height can generate alternative energy as water flows out. The contribution of flow rate, head, and water pressure offers an opportunity for water flow technology to convert this energy into small-scale electricity. This study aims to analyze the effect of the placement point of water flow technology on the electrical energy generated, examined through flow rate, head, and water pressure, to determine the optimal placement configuration. A descriptive-experimental method was employed with three independent variables (measurement point position, water tank capacity, and pipe diameter) resulting in eight combinations of measurement variations. The dependent variables measured were flow rate, water pressure, and generator voltage, with each measurement repeated three times for 60 seconds. Results showed that the optimal voltage of 25 VAC was achieved using a ½-in pipe diameter, a water tank positioned 4 m above ground level, and the water flow technology placed 50 cm above ground level. This voltage can be used for emergency LED lighting or, with an energy storage component and DC conversion, as a household power bank.
Co-Authors Bagas Adi Saputro Harwadi Muhammad Raihan As Shadqi Muhammad Yunus Novitasari Ramli Sumi Lasari Zanu Saputra Zulfitrianto