Abstract
In order to improve the quality of undergraduate education and combine theory and practice, Shandong University of science and technology organized innovative research activities project for undergraduates. Combined with the characteristics of engineering mechanics course, teachers of engineering mechanics teaching and research section guided students to take an active part in scientific research and innovation practice teaching, which has obtained a good teaching effect. This paper introduces the concrete implement process of the college students’ innovative scientific research project “Experiment Study on Elastic Indicator of Thermal Shock Ceramic Materials”, which measures elastic indicator of ceramics using the ultrasonic method. This paper studies elastic indicator change rule of the mullite ceramic samples under different factors such as temperature difference, thermal shock times and so on. Studies have shown that in the condition of air-cooling, with the increase of thermal shock temperature difference and thermal shock times, the elastic modulus value, shear modulus and Poisson’s ratio are in a falling trend. The project implementation have proved that implement undergraduate innovation research projects could effectively arouse students’ learning enthusiasm, cultivate students’ scientific research innovation and analytical abilities to solve practical scientific research problems.
Highlights
In order to strengthen students’ innovation consciousness and practical ability, Shandong University of Technology launched a college student innovation research project since 2009, and by 2015 it has been successfully held for consecutive 7 sessions
This paper focused on the changing rule of the mechanical properties indexes on the mullite materials in the thermal shock process, and cultivates students the research ideas and research methods of fatigue failure
Principle of operation: firstly, the pulse generator sends signals to two different transmitting probes which will send transverse waves and longitudinal waves respectively and at the same time the signals are send to a digital oscilloscope
Summary
In order to strengthen students’ innovation consciousness and practical ability, Shandong University of Technology launched a college student innovation research project since 2009, and by 2015 it has been successfully held for consecutive 7 sessions. Through the implementation of this project, leading undergraduate student to participate innovation activities, could help the students to understand the theoretical knowledge and improve their practical skills, and could let them access to the most advanced knowledge of the subject and increase their interesting in learning It will be very helpful for the students’ further research training. To measure the sample’s elastic index, an ultrasonic method is introduced which calculates the material’s elastic performance indicators such as Young’s modulus, shear modulus and Poisson’s ratio by determining the density of materials, speed of propagation of transverse waves and longitudinal waves in the material This method has a lot advantages, like no pasting of strain gauge, low cost, short cycle and multipoint measurement. It will be helpful for fostering students’ independent thinking and hands-on ability
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