| 摘要 |
A measuring system for tensile or compressive tests is provided. A set of mirrors includes a first plane mirror and a second plane mirror. The angles between the first plane mirror and the first axis and between the second plane mirror and the first axis are both a specific included angle, such that the first and second plane mirrors are symmetrical to the first axis. An object to be tested is disposed between the set of mirrors and an image capturing apparatus. Two extremities of the object have the first and second labels, respectively. The first and second mirror images of the first and second labels are generated through the first and second plane mirrors, respectively. After the object is tensed or compressed, the image capturing apparatus obtains the displacement of the first and second labels according to the shifting of the first and second mirror images. |
