The first "Mechanical Engineering Heritage" designation that began in 2007 of the Japan Society of Mechanical Engineers' (JSME's) 110th establishment commemoration reached to six times in 2012. In the previous paper, authors described the history and its significance of the things which was selected by expert of the Society and Technology Division of the JSME. Those are "Memorials in Mechanical Engineering - Machine Tool Edition -" of 29 as the establishment centenary of the society, "Mechanical Engineering Heritage in Japan" of 64, "Memorials in Mechanical Engineering - Railway Edition -" of 93 rolling stocks selected by Dr. Tsutsumi et al., and "Mechanical Engineering Heritage for 110th establishment anniversary" of 25. In this paper, the outline of the statistical analysis result about all 55 Mechanical Engineering Heritages including 12 cases of which were authorized in 2011 to 2012 is described. Furthermore, the influences are mentioned that designation of Mechanical Engineering Heritage by the Japan Society of Mechanical Engineers gave to other societies and associations. And a few future subjects in utilizations of heritages are mentioned too.
The Wright brothers received the honor of being "the inventors of the airplane" by developing an airplane which really could carry a person. However, until their success, many people attempted to fly in the sky but all failed. However, two people were successful at flying a model airplane before the success of the Wright brothers. If their development had continued, it is possible that their designs could have come into practical use as passenger aircraft and that the technology would have been passed on to their successors. Invention without practical implementation is worthless. However, generally only a small minority of inventions are put to practical use. Here I will explore the conditions which lead to implementation of inventions, focusing on the case of model airplanes, and why these two inventions didn't achieve success.
At the start of Japanese National Railway's transport from Tokyo to Yokohama in Oct. 1872, 58 wooden carriages were imported from England. In May 1874, another national railway started transport from Osaka to Kobe and 83 wooden carriages were prepared. In Feb. 1877, the latter national railway was extent to Kyoto. In Meiji era of Japan, wooden carriage construction had been continued by using imported parts and materials at Shinbashi and Kobe works of Japanese National Railway. It called as 'The Imperial Government Railway of Japan (IGRJ)'. Trainers of these works were all English railway engineers in 1880's. Many wooden carriages were designed and constructed by Japanese trainees. They took imported wooden carriages for model. Same methods were taken by other main Japanese private railway's works as Nippon Railway, Sanyo Railway and so on. Some private rolling stock builders started their business in Meiji era. There were high level Japanese technology and skill which accumulated through wooden furniture making and ship construction down to Edo era in the carriage construction. In this report, results on the technology transfer between English-made and home-made wooden carriage were explained. For the purpose of our research, we used famous rolling stock documents 'JAPANESE RAILWAYS LOCOMOTIVES CARRIAGES WAGONS AND CROSSINGS &C. &C. 1893' called as 'Blue-Printings'. These documents were compiled by an English railway engineer Mr. Francis Henry Trevithick (1850-1931) with Japanese railway officers in Meiji era.
As a case study, the preservation and utilization of industrial heritage in J-TREC (formerly known as Tokyu Car Corporation, or TCC) is discussed herewith. TCC has started preserving their own products by an in-house preservation system established in 2008, which was their 60th anniversary. The first stainless steel railcars preserved in J-TREC Yokohama Plant were certified as JSME Mechanical Engineering Heritage No.51 in 2012. The utilizing policy of the industrial heritage is to improve brand value, to use real products in engineering education, and to motivate company staff. It was evaluated that the results of preservation and utilization surpassed expectation. It has had a positivew qualitative evaluation from a technical viewpoint but expediting of activity from a financial aspect is required.
The Great East Japan Earthquake occurred on March 11, 2011, and the huge tsunami that followed brought with it great suffering in areas along the the east coast of the Tohoku region. The tsunami swept away people, cars, houses and whole communities. In this region, the process of recovery and reconstruction is still ongoing, but piles of waste woody biomass have been stacked up everywhere. We have been considering and attempting to determine a productive use of such waste wood biomass. In this report, we introduce a concrete outline of the challenge of using Stirling coolers and Stirling engines in the disaster area. First, we enabled production of domestic hot water and heating and power generation using woody biomass waste from the disaster area by combining the firewood stove with the practical Stirling engine. Second, we tested the use of the Stirling cooler for a support project. The windmill and PV cell power generation system were used to power the Stirling cooler. In the communities of the disaster area, systems which utilize solar and wind energy are also expected to be used in addition to those which burn woody biomass fuel.
The purpose of this paper is to report on the development of teaching materials for students in the Kisarazu National College of Technology who are working to develop practical electronics skills. In this study, we developed a textbook on electronics for use in college classes where PIC microcontrollers are also used. We found the developed textbook to be useful in this class.
In the present paper, we implement a new approach to manufacturing education that is based on internships with local businesses and that uses an interactive skills transfer and skill training system that integrates virtual reality (VR) technology and information communications technology (ICT), which were developed at Saitama University. We have created an interactive technology and skills-sharing network that links the knowledge resources and technical resources of our university with the skill resources of local businesses. The objective is for our students to learn the skills and business needs of local businesses and to be able to effectively acquire knowledge and skills for manufacturing. We herein report our findings concerning performing practical training that uses specialized knowledge acquired from lectures combined with VR technology with the objective of providing students with a more complete skill set. Our undergraduate mechanical engineering curriculum provides practical education that combines experiments, seminars, lectures, practical training, and internships.
Production subject matter utilized in the learning area of "energy conversion technology" in technology education course in junior high schools in Japan was developed. Developed production subject matter is a robot, which runs on a hula-hoop with a motor, and an electric double layer capacitor is used as its power supply. The structure of the robot is simplified with restricting the number of motors as its power source to only one, therefore the production of the robot can be completed in short class hours. Furthermore, learning about the effective use of energy also become possible through the measurement of charged quantity and discharged quantity of electricity by utilizing the electric double layer capacitor as its power supply. As a result of experimental class performed with the robot as the production subject matter, the robot could be completed in regulated class hours and the students' consciousness about the effective use of energy was promoted.
One of the most important and effective methods for studying is that students themselves plan and study what they want to study, and this learning process is very important for imparting to them the spirit of engineers. However most of the subject matter is prepared for students beforehand in ordinary courses at typical universities, where students have only to select them. Authors wished to create a course in which students can research on what they want to study. They developed a novel course called "a special course for active students" about a decade ago. This paper presents the framework and several actual activities of the developed course, especially for regional environmental improvement and energy education.
We produced two fuel cells as educational materials for mechanical engineering students: (1) a transparent direct methanol fuel cell, to demonstrate the reactive products on both anode and cathode channels, and (2) a polymer electrolyte fuel cell, with magnetic sensors to demonstrate the magnitude and direction of current around the electrode planes on both anode and cathode sides. We then demonstrated these fuel cells, showing our mechanical engineering students their structure and power generation function, as part of our education cultivating future mechanical engineers capable of designing fuel cells.
Engineering education involves communicating information between generations, from experienced engineers to young engineers and students. However, common sense based on experience often differs greatly between different generations. Simulation techniques were nonexistent or immature when the senior engineers of today were educated. Consequently, they do not blindly trust technology. However, some young engineers and students who were educated after the development of computer technology are convinced that findings based on computer-aided engineering (CAE) are equally valid as those obtained in real life. In the present study, we consider the construction of waribashi bridges and taketombos as examples of PBL(problem-based learning) projects to correct the discrepancy between real-life experience and virtual experience. Through these projects, students recognized the usefulness of 3D-CAD(computer-aided design) and CAE for engineering design, the limits to the applicability of CAE, and the importance of observing actual phenomena.
In recent years, there has been growing concern about the depletion of finite energy resources such as fossil fuels, so renewable energy has become an important research area. In this study, using wind power generation as the renewable energy technology, we executed analysis for the air flow and fluid power around a downwind windmill using CFD. A downwind windmill can generate power under strong wind conditions, so it can generate stable power in Japan. In addition, we propose and perform an educational method for mechanical design support by CAE/CFD.
Department of Robotics Engineering in Tokyo Metropolitan College of Industrial Technology has many researches. In the author's laboratory, developments, experiments and analyses of various children's toys have been carried out. For example, boomerangs with three wings, Plastic Bottle Rockets, boomerang stunt planes, flying rings and boomerang dragonflies are developed and analyzed by simple equations of motion The analytical results can explain the experiments. Two-legged walking toys equipment descends slope, while vibrating a right and left arm up and down. The vibration of this arm is called a rocking vibration. Relation between angle on slope and shape of legs is solved by Principle of conservation of energy. Moreover, relation between shape of legs and rocking vibration is solved by Newton method. Two-legged walking toys which children can manufacture were developed with the analyzed shape of leg.
Scenario Graph is one of Forced Association Measures and also one of structured mind mapping methods to generate potential scenarios for new products and services while visually organizing contextual information. In previous study, the effectiveness of the Scenario Graph for individual person is validated. In this paper, we transfer the Scenario Graph from design by individual person to design by group and show its effectiveness. We compare group workshop results of idea creation between the Scenario Graph (as a test group) and a group Brainstorming (as a control group) - to solve an identical problem. The test group, which used the Scenario Graph, yielded more ideas than the control group, which used the Brainstorming, did. Moreover the ideas of the test group were newer than those of the control group, too. Our experiment result suggests that the Scenario Graph by group is effective as same as by individual person in improving the performance of idea creation.
July 31, 2017 Due to the end of the Yahoo!JAPAN OpenID service, My J-STAGE will end the support of the following sign-in services with OpenID on August 26, 2017: -Sign-in with Yahoo!JAPAN ID -Sign-in with livedoor ID * After that, please sign-in with My J-STAGE ID.
July 03, 2017 There had been a service stop from Jul 2‚ 2017‚ 8:06 to Jul 2‚ 2017‚ 19:12(JST) (Jul 1‚ 2017‚ 23:06 to Jul 2‚ 2017‚ 10:12(UTC)) . The service has been back to normal.We apologize for any inconvenience this may cause you.
May 18, 2016 We have released “J-STAGE BETA site”.
May 01, 2015 Please note the "spoofing mail" that pretends to be J-STAGE.