Analysis of an Error Accompanying Measured Surface Crack Depth of Concrete Using Ultrasonic Pulse Velocity Method

초음파법에 의한 콘크리트 표면 균열 깊이의 측정오차 분석에 관한 연구

Ultrasonic pulse velocity method is applied many times for measuring surface crack depth of concrete in case of diagnosis of concrete structures. By the way, this method has an error accompanying measured surface crack depth of concrete because there are many uncertainty factors. So, it is necessary to study for an error of this method affected by these uncertainty factors. Two error factors(uncertainty factors) are tested and analyzed in this study. One is for an error according to measuring the propagation time of ultrasonic wave and the arrangement distance of transducers. Another is for an error according to positioning the transducer as a distance to surface crack from the transducer.