https://ph01.tci-thaijo.org/index.php/jrame/issue/feedJournal of Research and Applications in Mechanical Engineering2024-10-25T00:00:00+07:00Prof.Dr. Smith Eiamsa-ardjrame.tsme@gmail.comOpen Journal Systems<h3 style="text-align: justify;"><strong>Journal of Research and Applications in Mechanical Engineering</strong></h3> <div style="text-align: justify;"><strong>Journal Abbreviation:</strong> J. Res. Appl. Mech. Eng.</div> <div style="text-align: justify;"><strong>ISSN:</strong> 2229-2152 (Print)</div> <div style="text-align: justify;"><strong>ISSN:</strong> 2697-424x (Online)</div> <div style="text-align: justify;"><strong>Language:</strong> English</div> <div style="text-align: justify;"><strong>Publication fee:</strong> free of charge</div> <div style="text-align: justify;"> <div style="text-align: justify;"><strong>Issues per years:</strong> 2 Issues (1<sup>st</sup> issue: January - June/2<sup>nd</sup> issue: July - December)</div> <div style="text-align: justify;"><strong>Review Method:</strong> Double-blind review</div> </div> <p> </p> <p style="text-align: justify;">The Journal of Research and Applications in Mechanical Engineering (JRAME) publishes results of research, applications, ideas and innovations related to mechanical engineering issues. Manuscripts submitted to the journal must be (1) original, (2) substantial, and (3) of significant importance.</p> <p style="text-align: justify;">JRAME, a peer-reviewed journal, aims to provide the most complete and reliable source of information on current developments in the field. Emphasis will be on rapidly publishing quality manuscripts that are freely available to researchers worldwide.</p> <p style="text-align: justify;">All manuscripts submitted to JRAME undergo a peer-review process via a double-blind review. Normally, two or three reviewers are invited to comment on a manuscript. Authors may request that certain reviewers not be used, but this decision should be left to Editor's discretion.</p>https://ph01.tci-thaijo.org/index.php/jrame/article/view/255478Heat Transfer of MHD Non-Newtonian Fluid in Presence of Thermally Stratified Medium2024-02-26T20:46:10+07:00C. Sulochanamath.sulochana@gmail.comA.L. Nandeppanavarmath.abhilashln@gmail.com<p>In this paper, investigated on heat transfer of MHD non-newtonian fluid in presence of thermally stratified medium. The momentum and energy equations associated with the partial differential equations are transformed into highly nonlinear ordinary differential equations by using similarity transformations. Kummer's function is used to represent the analytical solutions to these equations, and obtained the numerical solution of energy equation using analytical solution of flow. Numerical analysis carried out through BVP5C and ND Solver commands, and comparing with analytical method while using wolfram language mathematica and values are accurate. Graphically represented all physical parameters and also represented in Table form and Bar & Contour Graphs. In presence of thermal stratification, it is seen that the rate of surface heat transfer decreases whenever rising in viscoelastic and magnetic parameter, Prandtl number. Temperature distribution exhibits the reverse effect. Applications are geothermal & power plant condensation systems, geological transport, lake thermohydraulics, volcanic flows.</p>2024-10-25T00:00:00+07:00Copyright (c) 2025 Journal of Research and Applications in Mechanical Engineeringhttps://ph01.tci-thaijo.org/index.php/jrame/article/view/255653Estimation of the Fatigue Life of Test Specimens Made from Ferrous Metals Using Graphical Technique2024-02-11T22:41:56+07:00K. Srisathitkhantapoat@mut.ac.th<p>New engineers in mechanical design occasionally encounter difficulty when forecasting the fatigue life of created parts under dynamic conditions. This is because, during the design phase, the size of the pieces is regularly adjusted along with the changing material type, the modified design factor, and even the magnitude of the load in order to generate a prototype that is most compatible with the design circumstances. However, theoretically estimating a part's fatigue life is challenging and time-consuming. Therefore, It might not be the ideal option for the current mechanical design process because it contradicts the QCD paradigm, which is thought to be the cornerstone of industrial production. As a result, this article presents a graphical technique using AutoCAD software to estimate the fatigue life of test specimens made of ferrous metals with ultimate tensile strengths ranging from 490 to 1400 MPa. This approach produces accurate and reliable results when compared to an equation-based fatigue life estimation procedure. This method shortens the time and expense of design. Additionally, as compared to the conventional way, increases the mechanical design's flexibility and agility.</p>2024-10-25T00:00:00+07:00Copyright (c) 2025 Journal of Research and Applications in Mechanical Engineeringhttps://ph01.tci-thaijo.org/index.php/jrame/article/view/254688Design Procedure of an Axial Flow Irrigation Pump2024-03-03T22:33:43+07:00Kittipass Wasinarom kittipass.wa@kmitl.ac.thJarruwat Charoensukjarruwat.ch@kmitl.ac.thWitthawat Sanghirun witthawat2104@gmail.comSuthep Kaewnai Suthepkaewnai@gmail.comMonthon Jaikusonmonthon.ja@kmitl.ac.th<p>The paper presents the design procedure of an axial flow irrigation pump. It was designed to deliver a flow rate of 9,000 L/min with a head of 4 m at the Best Efficiency Performance point (BEP). The target hydraulic efficiency was 75%. It started with the preliminary design which predefined the inlet and outlet blade angle of the impeller and the stator vane using a triangular velocity diagram. After that, the other components in the pump system which are the inlet bell, duct, and trailing cone were constructed in the Computer Aided-Design (CAD) software. Then, the flow structure of the pump system was obtained using Computational Fluid Dynamics (CFD). The impeller blade channel, guide vane profile, and the flow channel throughout the pump system were improved to attain target efficiency. This was done by awareness of the development of high velocity (jet flow) and low velocity wake (wake flow) along the entire flow channel. The blade profile was adjusted to minimize wake region while the high jet velocity was reduced. By continuously improving the blade profile, the final version’s hydraulic efficiency was 75.27%. The head was 5.68 m with the flow rate of 11,676 L/min.</p>2024-11-05T00:00:00+07:00Copyright (c) 2025 Journal of Research and Applications in Mechanical Engineeringhttps://ph01.tci-thaijo.org/index.php/jrame/article/view/255621Experimental Investigation of the Effects of a Reduced Exhaust Gas Re-circulation Rate on the Performance and Emissions of CI Engines Running on Biodiesel made from Dairy Waste Scum Oil2024-03-21T22:12:12+07:00S.B. Anjappamechvism@gmail.comD.K. Rameshaanji09.sb@gmail.com<p>Biodiesel resembles the qualities of fossil diesel while it is also proven to be a greener fuel and viable alternative. However, the primary challenge of using biodiesel was higher emissions of Nitrogen oxides (NOx). Hence to minimize the NOx, an exhaust gas re-circulation (EGR) system could be utilized and could resolve the challenges associated with this higher NOx emissions. In this study, dairy waste scum oil biodiesel was prepared and blended with diesel at 20% by volume (B20) and three different EGR percentages 5%, 10%, and 15%, were investigated on the characteristics of CI engine. Based on the test outcomes, a drop in NOx has been observed with a 15% rate of EGR which is 6.1% lower than conventional diesel. Moreover, brake thermal efficiency increased by 11% as compared to diesel. However, a slight increase in other exhaust emissions was noticed with EGR. The findings indicate that utilizing a lower rate of exhaust gas re-circulation (EGR) at 15 % in conjunction with a B20 blend of dairy waste scum oil biodiesel yields optimal engine performance while minimizing NOx emissions.</p>2024-11-05T00:00:00+07:00Copyright (c) 2025 Journal of Research and Applications in Mechanical Engineering