cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Yogi Ginanjar
Contact Email
mechanicalxplore@ubpkarawang.ac.id
Phone
-
Journal Mail Official
mechanicalxplore@ubpkarawang.ac.id
Editorial Address
Jalan HS. Ronggo Waluyo, Puseurjaya,Sirnabaya, Kec. Telukjambe Timur., Kabupaten Karawang, Jawa Barat 41361
Location
Kab. karawang,
Jawa barat
INDONESIA
Jurnal Teknik Mesin Mechanical Xplore
Published by Universitas Buana Perjuangan Karawang
ISSN : 27460045     EISSN : 27463672     DOI : https://doi.org/10.36805/jtmmx.v2i2
Core Subject : Science, Engineering,
Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Mechanical Xplore journal is published by the Mechanical Engineering Department, Faculty of Engineering, Universitas Buana Perjuangan Karawang, Karawang-West Java-Indonesia. Mechanical Xplore journal is an open-access, peer-reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in mechanical engineering. Mechanical Xplore journal accepts submissions from all over the world, especially from Indonesia. Mechanical Xplore publishes research journals, methodologies, and case studies on mechanical engineering in general. Scientific articles in this journal contain data and information advancing science in general and fundamental research. The scope of the paper included Manufacturing Engineering, Manufacturing Systems, Automation Engineering, Advance Material, Industrial Engineering, Energy Conversion, and Mechanical Design.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 85 Documents
 5   6   7   8   9 
The Effect of Post-Weld Heat Treatment Temperature on Microstructure and Mechanical Properties of FCAW-Welded SS400 Steel Aprianto, Edo; Haftirman, Haftirman
Jurnal Teknik Mesin Mechanical Xplore Vol. 6 No. 2 (2025): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/nq48my18

Abstract

Low-carbon structural steels, such as SS400, are widely used in shipbuilding because of their good weldability, ductility, and adequate strength. However, welding introduces residual stresses and microstructural transformations that may reduce the mechanical performance of welded joints; therefore, post-weld heat treatment (PWHT) is important for improving weld integrity. This study investigated the effect of PWHT temperature on the microstructural evolution and mechanical properties of SS400 steel welded using flux-cored arc welding (FCAW) in the 3G and 4G positions. Welded specimens were subjected to PWHT at 550, 650, and 750°C for 60 min, followed by air cooling, while non-PWHT specimens were used as a reference. Microstructural characterization, hardness testing, and tensile testing were performed to evaluate the mechanical behavior of the welded joints. The base metal and heat-affected zone (HAZ) were predominantly composed of ferrite and pearlite under all conditions, whereas the weld metal exhibited martensite and Widmanstätten ferrite in the lower PWHT range. Among the investigated conditions, PWHT at 550 °C produced the most favorable mechanical response, achieving the highest tensile strength of 556 MPa and average hardness values of 191.3 HV in the base metal, 189.3 HV in the HAZ, and 179 HV in the weld metal. The results demonstrate that PWHT temperature significantly influences phase evolution and mechanical performance, with 550°C identified as an effective treatment condition for improving the mechanical reliability of FCAW-welded SS400 joints.
Pengaruh Variasi Orientasi Serat pada Komposit Hibrida Rami/E-Glass terhadap Kekuatan Tarik dan Kekuatan Bending Nurul Islam, Muhammad Irfa; Muhammad Irfa, Nurul Islam; Hendrix Noviyanto, Firmansyah; Shafira Nur, Permata
Jurnal Teknik Mesin Mechanical Xplore Vol. 6 No. 2 (2025): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/hr2qh338

Abstract

Hybrid natural–synthetic fiber composites have gained increasing attention as lightweight and sustainable materials for structural applications. This study investigated the mechanical properties of hybrid composites reinforced with natural ramie fiber and synthetic E-glass fiber as potential materials for helmets that comply with the Indonesian National Standard (SNI) requirements. The composites were fabricated using the hand lay-up method with different fiber volume fraction ratios: A (20% ramie: 10% E-glass), B (10% ramie: 20% E-glass), C (15% ramie: 15% E-glass), and D (25% ramie: 5% E-glass), while maintaining a constant total fiber content of 30% and 70% epoxy matrix. Prior to fabrication, the ramie fibers were treated with a 5% NaOH alkali solution to enhance the fiber–matrix interfacial bonding. Mechanical characterization was conducted through tensile and flexural tests based on the ASTM D638 and ASTM D790 standards, respectively. The results showed that Specimen B exhibited the highest tensile strength and elastic modulus, reaching 104.38 MPa and 5063.02 MPa, respectively. Meanwhile, the highest flexural strength was obtained for Specimen A, with a value of 41.11 MPa and a flexural modulus of 635.89 MPa. All composite configurations satisfied the minimum strength requirement for SNI-standard helmets (33.93 MPa). However, several defects, such as voids, fiber pull-out, and delamination, were observed, which were mainly attributed to incomplete resin infiltration during the hand lay-up process. Therefore, the application of vacuum bagging or other assisted molding techniques is recommended for future studies to reduce internal defects and improve the quality of composites
Design of a Sintering Machine for 316L Material Products from 3D Printing for Product Design Engineering Laboratory Indrian, Dinny; Adi S Pradipta
Jurnal Teknik Mesin Mechanical Xplore Vol. 6 No. 2 (2025): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/cy835n03

Abstract

The increasing demand for high-performance metal components in additive manufacturing necessitates effective post-processing methods to enhance material density and mechanical properties. This study presents the design of a compact laboratory-scale sintering machine for 316 L stainless steel components fabricated using fused-filament fabrication (FFF). The design process adopted a simplified VDI 2222 methodology encompassing planning, conceptual design, and detailed design stages. Functional decomposition and systematic evaluation of the alternative design concepts were conducted using the VDI 2225-based assessment method, leading to the selection of the optimal configuration. Thermal analysis and radiation-based simulations demonstrated that the proposed system is capable of achieving the required sintering temperature range for 316 L stainless steel (approximately 1100–1300 °C) with a stable heat distribution. Structural analysis further confirmed that all critical components operated within acceptable safety limits, with safety factors exceeding the standard design criteria. Overall, the proposed design provides a technically feasible and safe solution for laboratory-scale sintering, supporting research and prototyping in metal additive manufacturing.
The Effect of a Crude Palm Oil–Derived Hybrid Coolant on the Corrosion Behavior of SPCC-Based Electro-Galvanized Steel Budhi Rahardja, Istianto; Basyir Rantawi, Azhar; Saputera, Hendra; Dody, Dody; Tresya Mauriraya, Kartika; Samsurizal, Samsurizal
Jurnal Teknik Mesin Mechanical Xplore Vol. 6 No. 2 (2025): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/kfp52419

Abstract

Water-based cooling systems can promote corrosion of metal components, while conventional ethylene glycol coolants pose toxicity and environmental concerns. To address these issues, a novel coolant derived from crude palm oil (CPO) was evaluated for its corrosion behavior on SPCC-based electro-galvanized steel, a material commonly used in radiator applications. The coolant formulation consisted of glycerol, propylene glycol, a CPO-based component, and distilled water, blended to achieve a homogeneous mixture, with chemical analysis confirming three principal natural constituents accounting for nearly the entire formulation. Corrosion performance was assessed by static immersion of SECC samples in the CPO-derived coolant at ambient temperature for 336 h. No measurable weight loss was detected after immersion. SEM–EDS analysis revealed a predominantly zinc-rich surface with no evidence of Fe-rich oxide formation, while XRD patterns were dominated by metallic Zn and Fe reflections at 2θ ≈ 44.6°, 65.2°, and 82.38°, with no diffraction peaks corresponding to crystalline iron corrosion products such as hematite, magnetite, or goethite. The absence of corrosion-related diffraction features and rust formation indicates that the CPO-based coolant did not induce corrosion under the investigated short-term conditions. These results suggest that the CPO-derived coolant is a promising renewable and corrosion-compatible alternative for cooling applications, although further evaluation under long-term, dynamic, and elevated-temperature conditions is required.
The Effect of Compressor Speed ​​on Residential Air Conditioning Systems Using R407c and R32 Refrigerant SAFRIL, SAFRIL; Wan Hamzah, Wan Azmi Bin; Wei, Teh Ting; Gurning, Ridho Hans; Sukarman, Sukarman; Khoirudin, Khoirudin
Jurnal Teknik Mesin Mechanical Xplore Vol. 6 No. 2 (2025): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/g02r6b73

Abstract

The demand for residential air conditioning (RAC) systems is expected to increase in the future owing to rising ambient temperatures resulting from global warming. Therefore, it is important to develop and study refrigerants that can improve energy efficiency and thermodynamic performance. This study compares R32 and R407c refrigerants in RAC systems, with an emphasis on the coefficient of performance (COP) and cooling capacity. The research methodology used an experimental approach by testing compressor speeds of 2400, 2700, and 3000 rpm. Based on the test results, R32 consistently performed better than R407c at all compressor speed variations. The COP and cooling capacity of R32 increased significantly by 15.53% and 35.90%, respectively. The stability of R32 performance operated at different compressor speed variations showed an increase in operational adaptability. Finally, R32 was proven to be a more effective and efficient refrigerant than R407c in the RAC system.

Page 9 of 9 | Total Record : 85

 5   6   7   8   9 

Filter by Year

2020 2025


Reset
Filter By Issues
All Issue Vol. 6 No. 2 (2025): Jurnal Teknik Mesin Mechanical Xplore (JTMMX) Vol. 6 No. 1 (2025): Jurnal Teknik Mesin Mechanical Xplore (JTMMX) Vol 5 No 2 (2024): Jurnal Teknik Mesin Mechanical Xplore (JTMMX) Vol. 5 No. 2 (2024): Jurnal Teknik Mesin Mechanical Xplore (JTMMX) Vol. 5 No. 1 (2024): Jurnal Teknik Mesin Mechanical Xplore (JTMMX) Vol 5 No 1 (2024): Jurnal Teknik Mesin Mechanical Xplore (JTMMX) Vol 4 No 2 (2024): Jurnal Teknik Mesin Mechanical Xplore (JTMMX) Vol. 4 No. 2 (2024): Jurnal Teknik Mesin Mechanical Xplore (JTMMX) Vol 4 No 1 (2023): Jurnal Teknik Mesin Mechanical Xplore (JTMMX) Vol. 4 No. 1 (2023): Jurnal Teknik Mesin Mechanical Xplore (JTMMX) Vol 3 No 2 (2023): Jurnal Teknik Mesin Mechanical Xplore (JTMMX) Vol 3 No 1 (2022): Jurnal Teknik Mesin Mechanical Xplore (JTMMX) Vol 2 No 2 (2022): Jurnal Teknik Mesin Mechanical Xplore Vol 2 No 1 (2021): Jurnal Teknik Mesin Mechanical Xplore Vol 1 No 2 (2021): Jurnal Teknik Mesin Mechanical Xplore Vol 1 No 1 (2020): Jurnal Teknik Mesin Mechanical Xplore More Issue