Application of Time Domain Reflectometry Technology to Quantification of Reflected Waveforms on Coaxial Cables with Shear and Extension Tests
49(2):71-76Yu-Shu Lin Shei-Chen Ho Jun-Yang Chen I-Hui Chen* Miau-Bin Su
* Corresponding Author. E-mail : email@example.com Show preview
| PDF( 2.77MB )
|Application of Time Domain Reflectometry Technology to Quantification of Reflected Waveforms on Coaxial Cables with Shear and Extension Tests|
|Yu-Shu Lin Shei-Chen Ho Jun-Yang Chen I-Hui Chen* Miau-Bin Su|
This study applied Time Domain Reflectometry (TDR) technology to quantify the deformation of coaxial
cables with shear and extension in the laboratory by simulating the type and magnitude of cable deformation in a
landslide. First, the test simulated two sliding planes by shear displacement in the laboratory with a TDR coaxial cable.Then, a TDR tester interrogated the reflected V-type waveforms of the cable. Subsequently, a quadratic regression established the relationship between reflection coefficient integrals and deformation magnitude. The maximum magnitude of a cable deformation by shearing was approximately 60 mm. Therefore, the changes of the cable’s shear deformation can be determined using the regression equation. The second test was an extension with the TDR technology.The result of reflected waveforms illustrated a significant increase in the amplitude of reflection coefficient as the cable ruptured, and the maximum magnitude of the cable’s extension displacement was approximately 40 mm.
Key Words: Time Domain Reflectometry (TDR), ground sliding, quantification of TDR waveforms.
Department of Civil Engineering, National Chung Hsing University, Taichng 402, Taiwan, R.O.C.
* Corresponding Author. E-mail : firstname.lastname@example.org
Characteristics and Warning Methods of Ground Vibrations Generated by Debris Flows at Ai-Yu-Zi Creek
Establishment of Landslide Susceptibility Early Warning Model in National Forest Areas Based on Geo-intrinsic and Hydro-extrinsic Factors
Object-based Classification for Detecting Landslides and Vegetation Recovery—A Case at Baolai, Kaohsiung
Rheological Experiments and Slump Tests of Kaolin Slurries
Comparison of Downstream Erosion Between Permeable and Impermeable Groundsill Throung Flume Tests