| 摘要 |
PROBLEM TO BE SOLVED: To precisely measure the strain of the groove bottom surface of a tire.SOLUTION: Lattice sheets SS1-SS4 are pasted, using a pasting tool, on a groove as a part recessed from the surface of a tire 2. An imaging apparatus 3 including cameras 31a and 31b shoots the lattice sheets SS1-SS4. A tire shape analyzer 4 analyzes an image shot by the imaging apparatus 3 using a noncontact shape measurement method such as a selection-type sampling moire method. On the basis of the analysis result by the tire shape analyzer 4, the strain of the surface of the groove is calculated.SELECTED DRAWING: Figure 1 |
