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

本研究开发了一种可用于课堂材料强度教学的紧凑型材料试验机。所研制的试验机包括一台拉压试验机、将输入信号计算为应力应变数据并显示数据图形的计算机系统和显微镜，以观察材料的宏观和微观变形和断裂。该机的设计是为了能够同时观察材料的宏观和微观变形。因此，学生更容易理解复杂的材料变形和断裂，并对材料的强度产生兴趣。本发明的机器在没有专业知识的情况下，也能直观、直观地了解材料的变形和断裂，适用于儿童、老年人等开放校园的讲座。提出了利用试验机进行材料强度教育的新方法，并检验了该方法对材料强度认识的适用性。以人类与人工智能系二年级学生为对象进行了“工程实验室”实验讲座。学生提交的报告和问卷结果表明，该方法对学生容易理解材料强度是有效的。

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.