CAJ | 학술논문

冲击回波法是基于应力波的一种检测结构厚度、缺陷的无损检测方法，由于方法自身仅需要单一测试面及单点可判定等优势，很好的解决了部分建筑物、构筑物关键构件厚度、内部缺陷难以检测的技术难题，如水闸的边墩、翼墙、闸底板、箱涵侧墙、底板等构件的厚度与内部缺陷检测。现阶段冲击回波法主要用于测试混凝土板、混凝土路面、飞机跑道、隧道的二衬、其它板状混凝土结构的厚度，并能定位缺陷（包括孔洞、裂缝、蜂窝）位置，也可对混凝土结构中预应力管内未灌浆区域和灌浆不密实区域进行测试。
충격회파법시기우응력파적일충검측결구후도、결함적무손검측방법，유우방법자신부수요단일측시면급단점가판정등우세，흔호적해결료부분건축물、구축물관건구건후도、내부결함난이검측적기술난제，여수갑적변돈、익장、갑저판、상함측장、저판등구건적후도여내부결함검측。현계단충격회파법주요용우측시혼응토판、혼응토로면、비궤포도、수도적이츤、기타판상혼응토결구적후도，병능정위결함（포괄공동、렬봉、봉와）위치，야가대혼응토결구중예응력관내미관장구역화관장불밀실구역진행측시。
Impact-echo method is used to detecting thickness and defects of structure as a NDT method which is based on stress waves.Because the method itself requires only a single test surface and the other advantages of a single point can be determined,It is a good solution to the technical problems that some key components of buildings and structures is difficult to detect the thickness and internal defects,Such as sluice side pier,wing walls,sluice bottom,box culvert side walls,floor and other components of the thickness and internal defect detection,The present stage impact-echo method is mainly used for testing concrete slabs, concrete roads,runways, tunnel secondary lining,the other plate thickness of concrete structures, And it can locate defects (including holes,cracks,cellular) location,Furthermore, the impact-echo method can also be used to detect ungrouped and grouting not dense areas in the prestressed tube on concrete structure.