A new method for education of material strength using a compact material testing machine

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This study developed a compact material testing machine which can be used in the lecture room for the education of the material strength. The developed testing machine includes a tension-compression testing machine, computer systems which calculate the input signals as stress and strain data and show the graphic of its data and microscopes in order to observe the macroscopic and microscopic deformation and fracture of materials. This machine was designed so as to be possible to observe the material deformation macro and microscopically at the same time. Thus, the students understand the complex material deformation and fracture easier and also take interest in the material strength. The developed machine helps to understand the material deformation and fracture visually and sensuously even with no professional knowledge, so it can be used for the lectures such as an open campus for children and aged persons.This study proposed the new method for education of material strength using the testing machine and examined the applicability of the method to understanding the material strength. Experimental lectures of 'Engineering Laboratory' were conducted on 2nd grade students in the department of Human and Artificial Intelligent Systems. Results of reports and questionnaires submitted from students showed that the method is effective for students to easy-understanding the material strength.