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All Journal FLYWHEEL : Jurnal Teknik Mesin Untirta BANGUN REKAPRIMA Turbo : Jurnal Program Studi Teknik Mesin Infotekmesin Journal of Appropriate Technology for Community Services Accurate: Journal of Mechanical Engineering and Science
Kurniawan, Ipung
Jurusan Teknik Mesin, Politeknik Negeri Cilacap
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation Other

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Rancang Bangun Mesin Uji Bending Untuk Material Komposit Fikri Adi Kusuma; Fendi Tri Hartono; Ipung Kurniawan; Roy Aries Permana Tarigan
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 2 (2022): October 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i2.1516

Abstract

The bending test machine for composite materials is a machine designed as material testing tool, especially composite materials. The objectives achieved are to design and manufacture a bending test machine as well as to test the composite material of epoxy resin and sugarcane powder based on the ratio of weight fractions. The machine design method uses the VDI 2222 method approach. From the method carried out, the results obtained from the design of the bending test machine using Solidwoks 2017. The design results of the bending test machine with dimensions of length 500 mm, width 500 mm, and height 1.400 mm, which consists of several main components including: frame; suppression system; and supports. The estimated time of the bending test machine production process takes 51,69 hours or 7 days. The results of the composite material test resulted in the bending strength of the 100% resin weight fraction of 67,71 Mpa and the 50% sugarcane powder weight fraction of 33,74 Mpa.
Development and Design of Portable 1 Phase Spot Welding Machine Kurniawan, Ipung; Pujono, Pujono; Pribadi, Joko Setia; Prabowo, Dian
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 11, No 1 (2025): April
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v11i1.34064

Abstract

The design method used as an approach in designing portable spot welding machines is the VDI 2222 design method. Working drawings use ISO standards and the design application used is solidworks. From the design method used as an approach in designing portable spot welding machines, the results of image documents in the form of working drawings are obtained which will then be used in the production process. The result of maximum stress calculation result of the frame used is 0,301 N/mm2 ≤ ????izin = 166,67 N/mm2, therefore the results obtained show that the elbow profile size 40 mm x 40 mm x 2 mm is confirmed to be safe to withstand the given load. The spring calculation above τ max = 27,07 Kg/mm2 ≤ τa = 65 Kg/mm2, therefore the results obtained show that the spring with a winding diameter of 7 mm and a wire diameter of 1.2 mm is certainly safe to withstand the given load
Laju perambatan retak fatik dan sifat mekanik pada pengelasan friction stir welding (FSW) aluminium AA2024-T3 dengan perlakuan transient thermal tensioning (TTT) Pujono Pujono; Dian Prabowo; Ipung Kurniawan; Joko Setia Pribadi; Muhamad Yusuf
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 2 (2022): TURBO : Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i2.2270

Abstract

One type of engineering material that is often used in transportation construction, especially for aircraft, automotive, ships, and other industries is aluminum alloy. Aluminum alloys have excellent mechanical properties, including corrosion resistance, lightweight, and good formability. However, in addition to these good properties, aluminum also has a weakness, namely the appearance of porosity and cracks when connected using arc welding (TIG, MIG). Friction stir welding (FSW) is an appropriate welding method for aluminum alloys to overcome these weaknesses, but the next problem will arise, namely related to distortion, decreased mechanical properties, and residual stress. For this reason, additional treatment is needed in order to improve the mechanical properties of the FSW welding results. The research method to be carried out is to carry out the FSW welding process on 2024 T3 aluminum alloys by adding moving local heat or transient thermal tensioning (TTT) using a heater placed in front of the tool and a heating temperature of 200°C. Some of the characterizations that will be carried out are microstructure tests, tensile tests, and fatigue tests. The results showed that the highest tensile strength value was obtained in the 1500 specimen, which was 312.2 MPa. The microstructure in the nugget zone (NZ) is fine-grain equiaxed. The lowest fatigue crack propagation rate at ΔK values of less than 7 MPa.m0.5 occurred in the 1100 specimen, while in other specimens the fatigue crack propagation rate was higher.
Simulasi variasi sudut lidah volute casing terhadap kecepatan aliran udara pada blower tipe forward blade Husna Endry Syafa‘at; Ipung Kurniawan; Radhi Ariawan; Agus Santoso
Infotekmesin Vol 16 No 2 (2025): Infotekmesin: Juli 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i2.2546

Abstract

Optimization of volute design is essential for the performance of centrifugal pumps and blowers. This study investigates the effect of volute tongue angle variation on air velocity and flow rate in volute casing design using flow simulations. The volute design was tested with tongue angles of 15°, 30°, 45°, 60°, and 75°, based on theoretical equations of flow rate and volute radius. Simulation results indicated that increasing the volute tongue angle enlarges the volute cross-sectional area. Generally, this enlargement decreases air velocity but increases the flow rate. A 75° tongue angle produced the highest flow rate of 4.860 m³/s, while the highest velocity, 21.35 m/s, was observed at 15°. This behavior aligns with the principle of mass conservation, where a larger cross-sectional area leads to reduced fluid velocity. These findings suggest that volute designs with larger tongue angles can optimize the flow capacity.
Perancangan dan Simulasi Penggunaan Pembangkit Listrik Tenaga Surya Atap On Grid Pada Gedung Kuliah dan Laboratorium Supriyono Supriyono; Purwiyanto Purwiyanto; Sugeng Dwi Riyanto; Ipung Kurniawan
Infotekmesin Vol 16 No 2 (2025): Infotekmesin: Juli 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i2.2800

Abstract

Indonesia has a large solar energy potential, with an average radiation of 4.5-4.8 kWh/m² every day. Politeknik Negeri Cilacap (PNC) can take advantage of this opportunity to develop a Solar Power Plant. This study examines the possibility of building an on-grid rooftop solar power plant in the Department of Electrical and Mechatronics Engineering. This study uses Homer to simulate the solar power plant design. The parameters discussed are total energy production (kWh/year), renewable fraction, net present cost/NPC (Rp) which is all costs used in construction, both in installation and operation of the solar power plant and Cost of energy/COE (Rp/kWh) which is the cost incurred to produce electrical energy per 1 kWh. The results of the study include an average solar energy at PNC of 4.66 kWh/m²/day. Based on Homer's simulation results, the total energy generated by the solar power plant is 149,056 kWh/year, with 68,599 kWh/year from photovoltaic and 80,457 kWh/year from the PLN grid. The renewable fraction is 44.8%. The NPC is Rp 1,880,000,000, and the CoE is Rp 1,000/kWh.
Rancang Bangun dan Uji Kinerja Mesin Oil Skimmer Disk Type Berdasarkan Volume dan Kadar Ph Pada Cairan Pendingin Mesin CNC Milling Hurco Seri Vm10 Ipung Kurniawan; Pujono; Joko Setia Pribad Pribad; Agus Santoso; Ariq Rafi Ibrahim; Hilmam Zulmi Adha
Infotekmesin Vol 17 No 1 (2026): Infotekmesin: Januari 2026
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v17i1.2953

Abstract

Modern machining processes heavily rely on liquid coolants to extend the life of cutting tools; however, water-soluble coolants are susceptible to oil contamination, which degrades their quality. This research aims to design the form and details of a disc-type oil skimmer machine, perform the necessary machine element calculations, and test the results. The design process utilizes the VDI 2222 systematic approach with the aid of Autodesk Inventor 2025 software, supported by literature and field studies. The calculation results indicate a required motor power of 0.042 HP, a minimum shaft diameter of 7.2 mm, and a dynamic bearing load of 5.868 N. The frame strength analysis also ensures safety, with a maximum stress of 15.19 N/mm², well below the allowable limit of 79,2 N/mm². In conclusion, this design yields a viable and safe oil skimmer for implementation on the Hurco VM10 series CNC Milling machine, complete with detailed working drawings and an optimal speed of 80 rpm for separating oil from the coolant.
Evaluasi Performa Alat Uji Bending Sederhana untuk Pengujian Sambungan Las Baja Karbon Rendah Ike Anggraini Subono; Aulya Putri Wardani; Ipung Kurniawan; Ulikaryani Ulikaryani; Joko Setia Pribadi; Dian Prabowo; Pujono
Infotekmesin Vol 17 No 2 (2026): Infotekmesin: Juli 2026
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/

Abstract

Bending testing is a method used to evaluate the quality of welded joints; however, the limited availability of Universal Testing Machines (UTMs) can hinder testing and educational activities. This study aims to evaluate the performance of a simple bending test apparatus based on its ability to generate loading data, measurement result consistency, responsiveness to welding parameter variations, and preliminary alignment with data from previous studies. The tests utilized low-carbon steel specimens (6 mm thick) welded via the SMAW method using 3.2 mm diameter E7016 electrodes at current settings of 110 A and 120 A. Testing employed face-bending and root-bending configurations, with four specimens tested for each. Maximum loads were recorded using a load cell integrated with an HX711 module and Arduino, and subsequently used to calculate bending stress. Analysis was based on mean values, standard deviation, the coefficient of variation (CV), and visual inspection for cracks in the Heat-Affected Zone (HAZ). Results indicated bending stresses ranging from 553.8 to 794.7 MPa. Mean face-bending stress increased from 599.70 MPa at 110 A to 729.45 MPa at 120 A, while mean root-bending stress rose from 632.73 MPa to 740.63 MPa. CV values ranged from 2.45% to 10.86%. Comparisons with previous research revealed deviations of 50.17% at 110 A and 43.72% at 120 A. The findings demonstrate that the apparatus is capable of generating quantitative data and capturing changes in bending response; however, direct validation against a standard UTM is still required to determine measurement accuracy.
Co-Authors Agus Santoso Ariq Rafi Ibrahim Aulya Putri Wardani Bayu Aji Girawan Bayu Aji Girawan Dian Prabowo Dian Prabowo Fendi Tri Hartono Fikri Adi Kusuma Hilmam Zulmi Adha Husna Endry Syafa‘at Ika Fitriyani Ike Anggraini Subono Imam Muasih Imam Yulianto Joko Setia Pribad Pribad Joko Setia Pribadi Mohammad Nurhilal Muhamad Yusuf Nurrohman, Saeful Prabowo, Dian Pribadi, Joko Setia Probo Hardini Pujono Pujono Pujono Pujono, Pujono Purwiyanto Purwiyanto Radhi Ariawan Roy Aries Permana Tarigan Saeful Nurrohman Sugeng Dwi Riyanto Supriyono Supriyono Ulikaryani, Ulikaryani Yosep Susanto Yulianto, Imam