Development of strain visualization sheet using moire fringe

我们提出了一种使用莫尔条纹的应变可视化工作表，它可以显示对应于应变大小的字符和条纹，而不需要使用放大器、应变计和导线等电子元件。该薄片简单地附着在测量对象上，并且它通过肉眼可以看到的字符来显示应变信息。通过图像处理，可以从薄板的图像中获得准确的应变数值。该片材结构简单，制作成本低廉。结果表明，该板材通过字符提供了应变信息，并通过图像处理提供了准确的应变数值。

We proposes a strain visualization sheet using a moire fringe which can display characters and fringe that correspond to a magnitude of strain without the use of electronic elements, such as amplifiers, strain gauges and wires. The sheet is simply attached to a measurement object, and it shows strain information by characters which can be visible to the naked eye. Accurate numerical value of the strain can be obtained from an image of the sheet by using image processing. The structure of the sheet is simple and its fabrication is inexpensive. The results show that the sheet provides the strain information by characters and accurate numerical value of the strain using image processing.