| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure abnormality detection apparatus, which, even when a measurement point is changed, requires no adjustment of positional relationship between a vibrating section and a vibration measurement section which emit ultrasonic and laser beam while reducing the size thereof.SOLUTION: A structure abnormality detection apparatus includes: a vibrating section that generates vibration on a structure as a measurement target 4 at predetermined vibrating position in a non-contact manner; a first vibration measurement section that detects the vibration generated on the measurement target 4 at any position in a non-contact manner; a housing 3 in which the vibrating section and the vibration measurement section are disposed at a predetermined distance; a time measurement section that measures the time until the first vibration measurement section detects the vibration wave 6 which is generated on the measurement target 4 by the vibrating section.SELECTED DRAWING: Figure 3 |
