2018 Activity Report vol.23:Nagaoka University of Technology

Activity Report of Open Application Course vol.23

Japan and India joint research on development of prediction method for fretting fatigue strength related to abrasion

Report from Nagaoka University of Technology

Nagaoka University of Technology invited two students from Universiti Tun Hussein Onn Malaysia in India to conduct joint research from September 30th to October 12th, 2018. The purpose of this joint research was to develop a high-precision prediction method that can predict damage on contact surfaces and changes in contact pressure for a period of long-term use, by taking into account the effects of abrasion generated at the contact surfaces on fretting fatigue strength.

Observation of friction and abrasion during fatigue test

This is the third year of the program, and we conducted an experiment on the reduction effect on abrasion of surface treatment and coating, a comparative review of the results of the analysis on the experiment, and a fretting fatigue test. They had in-situ observation of crack initiation and development behavior during the fretting fatigue test. At the same time, with the outcome of the finite element method analysis on the table, they performed a comparative review, and had discussion, on how that process affects the generation and discharge behavior of abrasion powder depending on the presence or absence of coating.

Preparation of the specimens cut for the fretting fatigue test

During the stay, they had been actively engaged in interaction with Japanese students and international students of our university, in addition to participating in the joint research. In the interaction meeting, they used English to talk about various issues including their interests and culture, as well as Japanese students’ interests and Japanese culture. This meeting was very meaningful for the Japanese students as well. They expressed their feeling that participating in this program was a very valuable experience for them, including carrying out work in collaboration with postgraduate Indian students who have been engaged in similar research themes with Japanese Teaching Assistants.

Final presentation of the activities

Their stay in Japan was as short as 14 days, but the participants seemed to be very satisfied with the program from the intense experiments and the discussion that took place. The invited students seemed to be interested in the high level of education and research at our university, and they showed their interest as they would like to consider our university for their future studies. It was a very meaningful interaction for both sides. The project was completed this year, but we will continue to take initiatives, such as joint research presentations at international conferences.

Students receiving certificates