The application of ranking task in mechanical engineering drawing teaching strategy

Author(s):  
Wenjing SHEN ◽  
Zehang LIN ◽  
Hongzhi WANG
Author(s):  
David Torvi

In order to introduce students to mechanical engineering, a first year design laboratory was developed based on pine wood derbies that are run in various children’s organizations. In these races, children and their parents design and build a car using a kit consisting of a pine block, metal axles and plastic wheels. This design exercise introduces students to several aspects of mechanical engineering, including manufacturing, aerodynamics, and material science. It also builds on courses that cover engineering drawing and report writing.


Author(s):  
Afshin Goharzadeh ◽  
Arman Molki ◽  
Peter Rodgers ◽  
Shrinivas Bojanampati

This paper outlines a proposed low-cost experimental setup for the measurement of two-phase liquid-gas flows in a vertical column. The objective of the test facility is to familiarize students with the challenges in applying measurement techniques to characterize such flows. The test facility incorporates two complementary intrusive and non-intrusive measurement techniques for detecting and studying the dynamics of air bubbles transported in water. The intrusive measurement method uses conductivity probes, while the non-intrusive technique is laser based. For both measurement techniques, details of the data acquisition system and the characteristics of sensors employed are presented. In addition, the teaching strategy is discussed for implementing the use of the proposed two-phase flow experimental setup in a Mechanical Engineering curriculum.


Author(s):  
Peter Rodgers ◽  
Shrinivas Bojanampati ◽  
Afshin Goharzadeh ◽  
Arman Molki ◽  
Valerie Eveloy

One of the primary objectives of the Petroleum Institute (PI) is to prepare future mechanical engineers to assume successful career paths in the oil and gas industry. Hands-on laboratory skills play a vital role in providing students with a sound understanding of the scientific fundamentals and their application in solving real-life engineering problems. The Institute’s undergraduate mechanical engineering curriculum incorporates a one-semester junior level course titled Core Measurements, which is taught in a state-of-the-art measurement laboratory. This course includes two innovative hands-on experiments related to experimental heat transfer and fluid dynamics, with the objective of familiarizing the students, through simple projects, with the characterization of fundamental thermofluid phenomena. Each hands-on project consists of design, fabrication, data acquisition and validation of a simple experiment, with a formal report submitted on completion. Each project is undertaken by groups of four students over a five-week period. The first experiment characterizes conductive heat spread within a heat-source-substrate assembly representative of electronics cooling applications. The effects of heat source foot print, substrate geometry and thermal conductivity, and convective cooling conditions are investigated. The temperature distribution on the source and substrate surfaces are measured using thermocouples and infrared thermography, with substrate thermal resistance calculated and compared with analytical solutions. The second experiment aims to enhance student’s learning of internal pipe flows. Single phase flows in a pipe network are characterized for different flow regimes. The pipe network consists of different diameter lines with valves for regulating and directing the flow to make up various series and parallel piping combinations. The relation between head loss due to fluid friction and velocity, pressure drop empirical laws, valve characteristics, and loss coefficient of fittings are investigated using various pressure and flow measuring techniques, including laser Doppler velocimetry (LDV). The paper documents the experiments and the teaching strategy employed to integrate fundamental theories with hands-on experiences. Sample measurement and analysis results are reported. The effectiveness of the proposed experiments in enhancing student learning of thermofluids, engineering analysis of discrepancies between predictions and measurements, and project management skills is highlighted.


Author(s):  
Afshin Goharzadeh ◽  
Arman Molki

This paper outlines a proposed low-cost experimental setup for characterization of surface waves that was designed and fabricated in conjunction with a senior design project. The proposed experimental setup will enhance the student’s learning of surface waves at water-air interface inside an open transparent channel. The experimental study is based on the flow visualization of water waves combined with measurement of water level using a conductance wave height probe. The detail of the data acquisition system and the characteristics of the wave probes are presented. Finally a teaching strategy for implementing the water wave experimental setup in a Mechanical Engineering curriculum is discussed.


Author(s):  
Peter Rodgers ◽  
Shrinivas Bojanampati ◽  
Valerie Eveloy ◽  
Afshin Goharzadeh ◽  
Arman Molki

Hands-on laboratory skills play a vital role in providing mechanical engineering students with a sound understanding of the scientific fundamentals and their application in solving real-life engineering problems. This paper describes a hands-on laboratory thermofluid project which is taught as part of a one-semester, junior-level mechanical engineering course titled Core Measurements Laboratory. The experiment focuses on characterization of heat transfer from a cartridge-heated, isothermal cylinder inside a circular enclosure, by conduction, natural convection and radiation. The project consists in the design and fabrication of the test facility, data acquisition and comparison of experimental results with analytical predictions, with a formal report submitted on completion. The project is undertaken by a team of four students over a five-week period. Emphasis is placed on highlighting potential discrepancies between measurement and analytical predictions, which are inherent in the test configuration considered, reflecting realistic engineering situations. Sample measurement and analysis results are reported. The teaching strategy employed to integrate fundamental theories with hands-on experiences is described. The effectiveness of the laboratory project in enhancing student learning of heat transfer, engineering analysis of discrepancies between predictions and measurements, and project management skills was demonstrated by monitoring student performance improvements over the duration of the project.


2020 ◽  
Vol 17 (36) ◽  
pp. 608-623
Author(s):  
Gede WIDAYANA ◽  
Dianna RATNAWATI ◽  
Mojibur ROHMAN ◽  
Suryaman SURYAMAN

Engineering Drawing is one of the compulsory courses in the Department of Mechanical Engineering in Indonesia. This course aims to equip students with basic understanding and skills in drawing. In this case, this study aimed to develop learning media in the form of interactive multimedia determining the level of eligibility of the developed multimedia, and testing the effectiveness of the developed multimedia in enhancing students’ understanding of the basic concepts of engineering drawings. For this reason, this study used an R and D design with the 4D model to produce and test the effectiveness of the developed multimedia. The product validity test was carried out by two experts, namely one material expert and one media expert. The effectiveness test, onegroup pretest-posttest design was carried out by involving 28 students of the Mechanical Engineering Education study program at Universitas Pendidikan Ganesha, Bali, Indonesia. The results showed that both material and media experts agreed that the developed multimedia was suitable for teaching equipment in the lecture process. The effectiveness test also showed that multimedia developed effectively increased students’ understanding of the basic concepts of engineering drawings. The use of interactive multimedia could improve students' motivation and independence in learning, thus increasing their understanding of the Engineering Drawing course concepts.


2009 ◽  
Vol 625 ◽  
pp. 105-111 ◽  
Author(s):  
H. Miguélez ◽  
N.C. Marín ◽  
A. Muñoz ◽  
J.L. Cantero

Teaching metal forming processes in Mechanical Engineering Undergraduate program is very important because these technologies are widely used to manufacture a great number of parts to industries like automotive, machine tools, aeronautical and many others. High tooling costs and low numbers of parts produced are typical characteristics of forming processes of metal parts. The development of accurate numerical models capable of predicting parameters process combining time and cost reduction, could help to achieve design objectives, thus avoiding the practice of the empirical “trial and error” method that has been traditionally applied to metal forming design. The main objective of this paper is to show a perspective of the new Mechanical Engineering Graduate Undergraduate curricula in the current context of Engineering Education in Spain, focusing on the solid mechanics and manufacturing fundamentals needed to success in teaching simulation of metal forming processes. A new course dealing with modelling of metal forming processes is proposed, discussing curricula context, contents and methodology.


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