TDR Monitoring for Integrity of Structural Systems

Su, Miau-Bin; Chen, Yuh-Jyh

doi:10.1061/(asce)1076-0342(2000)6:2(67)

Cited by 10 publications

(3 citation statements)

References 9 publications

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“…For literature reviews of TDR laboratory experiments, a TDR tester detected reflection coefficients of a grouted coaxial cable when the cable is deformed by shear or extension stress as shown in Figure 1(a), which illustrated a signal "spike" as like a shape of "V" by shear stress (Figure 1(b)) and another signal as like a shape of "concave" by extension stress (Figure 1(c)) based on the TDR theories [15,16].…”

Section: Laboratory Testing For Tdr Technologymentioning

confidence: 99%

“…The cable and grout were the same as the materials used in field installation, listed in Table 1 [17]. [15,16].…”

Section: Laboratory Testing For Tdr Technologymentioning

confidence: 99%

“…Firstly, a coaxial cable is a continuous sensor where the TDR system can interrogate reflection coefficients of a crimp, kink, extension, or break [14]. Secondly, an important ability for the TDR technology is to locate the relative movement along the cable by extended or shear stress that causes the change of cable characteristic impedance when two adjacent rock masses move each other [15,16]. Finally, reflection coefficients of TDR-cable deformation are positive correlations with the rate of slope movement [9,17,18].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Long-Term Monitoring of Slope Movements with Time-Domain Reflectometry Technology in Landslide Areas, Taiwan

Su¹,

Chen²,

Ho³

et al. 2020

Landslides - Investigation and Monitoring

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The study employs time-domain reflectometry (TDR) technology for landslide monitoring to explore rock deformation mechanism and to estimate locations of potential sliding surfaces in several landslide areas, Taiwan, over ten years. Comparing to laboratory and field testing, sliding surfaces in landslide areas occurred mainly at two types, namely shear and extension failure. The TDR technology is used for field monitoring to analyze locations of sliding surfaces and to quantify the magnitude of the sliding through laboratory shear and extension tests. There are several TDR-monitoring stations in six alpine landslide areas in the middle of Taiwan for long-term monitoring. A relation between TDR reflection coefficients and shear displacements was employed for a localized shear deformation in the field. Furthermore, the type of a cable rupture for the TDR monitoring in landslides can be determined as shear, extension, or compound failure through the field TDR waveforms. Overall, the TDR technology is practically used for a long-term monitoring system to detect the location and magnitude of slope movement in landslide areas.

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Section: Laboratory Testing For Tdr Technologymentioning

confidence: 99%

“…The cable and grout were the same as the materials used in field installation, listed in Table 1 [17]. [15,16].…”

Section: Laboratory Testing For Tdr Technologymentioning

confidence: 99%