| 混凝土路面的超声测厚 |
| |
| 引用本文： | 董胜林,严碧歌.混凝土路面的超声测厚[J].陕西师范大学学报,1989(3). |
| |
| 作者姓名： | 董胜林 严碧歌 |
| |
| 作者单位： | 陕西师大应用声学研究所，陕西师大应用声学研究所 |
| |
| 摘 要： | 1原理 如图1所示的T为发射探头,R为接收探头,用时间t、C:为待测棍凝土中声速则 AB=C:一t/2.(1) 超声波由压电晶体产生后,经有机玻璃楔型块,其入射角为a一,有机玻璃中声速为C,,混凝土中折射角为0,,由斯奈尔定律有 5 in、/sino,=C:/c- 由三角形几何关系得 L/ZL/I,L、,_八月5 ino,=.笔于~=于,‘I(于)“ D艺) ABZ/、、2‘一,当超声彼由发射探头发出到接收探头收到所以一:—!刁!D斤图1测厚原理图L2所以C:二 Cl5 ino: 1〔(工/2), 。,,〕万’(2)又因为,BZ一(静’ ”’·将上式代入(1)式,再利用式(2)关系,则有轰 Cz5 ino〔(乙/2), D,1月L…
|
Ultrasonic Testing Thickness of the Road Face of Concrete Highways |
| |
| Dong Shenglin Yan Bige.Ultrasonic Testing Thickness of the Road Face of Concrete Highways[J].Journal of Shaanxi Normal University: Nat Sci Ed,1989(3). |
| |
| Authors: | Dong Shenglin Yan Bige |
| |
| Institution: | Applied Acoustics Institute |
| |
| Abstract: | The application of the travelling theory of ultrasonic in a non-homogeneous medium to the. non-destructive testing of the road face of concrete highways is introduced. Based on analysing of the road faces structure, a practical transduces and related testing circuits were developed. The results of tests are fairly satisfactory. |
| |
| Keywords: | non-homogeneous medium non-destructive testing mechanical wave refraction scattering |
| 本文献已被 CNKI 等数据库收录！ |
|
