Tissue Displacement Measurement Using Ultrasonic Wave Adaptive Digital Detection Method

1995 ◽  
Vol 34 (Part 1, No. 5B) ◽  
pp. 2835-2839 ◽  
Author(s):  
Hajime Otaki ◽  
Yoshiki Yamakoshi
Keyword(s):  
Ultrasonic Wave ◽  
Detection Method ◽  
Displacement Measurement ◽  
Digital Detection

scholarly journals An improved gas kick detection method based on continuous Doppler ultrasonic wave in deep water drilling

2017 ◽  
Vol 9 (8) ◽  
pp. 168781401771542
Author(s):  
Quan Zhou ◽  
Hui Zhao ◽  
Shengnan Li ◽  
Yufa He ◽  
Huijie Zhang
Keyword(s):  
Ultrasonic Wave ◽  
Deep Water ◽  
Detection Method ◽  
Gas Kick ◽  
Continuous Doppler

scholarly journals Detection Technology of Foamed Mixture Lightweight Soil Embankment Based on Ultrasonic Wave Transmission Method

2019 ◽  
Vol 2019 ◽  
pp. 1-15 ◽  
Author(s):  
Shikun Pu ◽  
Baoning Hong ◽  
Xin Liu ◽  
Fenqiang Xu ◽  
Hao Shan
Keyword(s):  
Ultrasonic Wave ◽  
Detection Method ◽  
Wave Transmission ◽  
Simulation Approach ◽  
Transmission Method ◽  
Detection Technology ◽  
Ultrasonic Parameters ◽  
Test Distance ◽  
Quality Diagnosis ◽  
Curing Age

This study attempted to establish a process that uses the ultrasonic wave transmission method to correlate the ultrasonic parameters with the material properties of Foamed Mixture Lightweight Soil (FMLS). The results were then applied for the defect detection of the FMLS embankment. First, the ultrasonic wave velocity (UPV) and amplitude (UPA) of FMLS with different mix proportions were collected continuously from 3rd day to 45th day in the curing age. The relationships between UPV versus FMLS elastic modulus, unconfined compressive strength, and density were calibrated. The variations in the ultrasonic parameters owing to the test distance and crack width were recorded. Then, the laboratory tests were reproduced through numerical simulation approach. Finally, the reliability and accuracy of the proposed detection method for FMLS were proved and validated through on-site tests. The proposed methodology, which is simple, stable, and reliable, was found to be suitable for the quality diagnosis of FMLS embankments after construction and during operation.

Digital detection method design of the optic error of the beam expander

2014 ◽  
Author(s):  
Hao Yu ◽  
Bingqi Liu ◽  
Zhuo Yang ◽  
Shiying Liu ◽  
Jiaju Ying
Keyword(s):  
Detection Method ◽  
Beam Expander ◽  
Digital Detection

Experimental Study of Bellows Duct Grouting Compactness with Quantitative Detection

2014 ◽  
Vol 716-717 ◽  
pp. 322-327 ◽  
Author(s):  
Feng Chu ◽  
Yuan Cao ◽  
Guang Zhi Qi ◽  
Lei Gao
Keyword(s):  
Experimental Study ◽  
Ultrasonic Wave ◽  
Theoretical Basis ◽  
Detection Method ◽  
Concrete Slab ◽  
Quantitative Detection ◽  
Estimation Model ◽  
Ultrasonic Detection ◽  
Time Histories

In order to quantitatively detect the compactness of bellows duct grouting, by studying time-histories relation curve forming by ultrasonic wave transmitting in different thicknesses concrete samples. We get the acoustic time rule after ultrasonic passed through different compactness bellows duct. At the same time, establishing empty hole estimation model corresponding to the concrete samples and providing theoretical basis for judging porosity and predicting the grouting quality in the bellows duct. Meanwhile, dividing the bellows duct into five degrees complete compactness, 3/4 compactness, 1/2 compactness, 1/4 compactness, empty by setting up defects in the bellows duct, and then embedding them in concrete slab to do ultrasonic detection. The detection result shows that ultrasonic detection method can effectively quantitive estimate the grouting quality of prestressed bellows duct with establishing empty hole estimation model.

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