scholarly journals Application of One-Sided Stress Wave Velocity Measurement Technique to Evaluate Freeze-Thaw Damage in Concrete

1999 ◽  
pp. 1935-1942 ◽  
Author(s):  
Joon-Hyun Lee ◽  
Won-Su Park ◽  
J. S. Popovics ◽  
J. D. Achenbach
Keyword(s):  
Wave Velocity ◽  
Stress Wave ◽  
Measurement Technique ◽  
Velocity Measurement ◽  
Freeze Thaw ◽  
Stress Wave Velocity ◽  
Damage In Concrete

Modified one-sided stress wave velocity measurement technique for concrete NDT & E

2006 ◽  
Author(s):  
Sung Woo Shin ◽  
Chung Bang Yun ◽  
Won Joon Song
Keyword(s):  
Wave Velocity ◽  
Stress Wave ◽  
Measurement Technique ◽  
Velocity Measurement ◽  
Stress Wave Velocity

One-Sided Stress Wave Velocity Measurement in Concrete

1998 ◽  
Vol 124 (12) ◽  
pp. 1346-1353 ◽  
Author(s):  
J. S. Popovics ◽  
W. Song ◽  
J. D. Achenbach ◽  
J. H. Lee ◽  
R. F. Andre
Keyword(s):  
Wave Velocity ◽  
Stress Wave ◽  
Velocity Measurement ◽  
Stress Wave Velocity

scholarly journals YOUNG'S MODULUS ESTIMATION OF TIMBER BY NON-DESTRUCTIVE TEST BASED ON STRESS WAVE VELOCITY MEASUREMENT

2013 ◽  
Vol 78 (686) ◽  
pp. 833-838
Author(s):  
Kazutaka NAMIE ◽  
Jian JIAO ◽  
Mina SUGINO ◽  
Noriko TAKIYAMA ◽  
Yasuhiro HAYASHI
Keyword(s):  
Young’S Modulus ◽  
Wave Velocity ◽  
Stress Wave ◽  
Velocity Measurement ◽  
Young's Modulus ◽  
Destructive Test ◽  
Stress Wave Velocity ◽  
Non Destructive

Propagation velocity model of stress waves in larch wood (Larix gmelinii) three-dimensional space with different moisture contents

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 6680-6695
Author(s):  
Xiwen Wei ◽  
Liping Sun ◽  
Hongjv Zhou ◽  
Yang Yang ◽  
Yifan Wang ◽  
...  
Keyword(s):  
Moisture Content ◽  
Wave Velocity ◽  
Stress Wave ◽  
Propagation Velocity ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Stress Waves ◽  
Moisture Contents ◽  
Direction Angle ◽  
Stress Wave Velocity

Based on the effects of stress wave propagation in larch (Larix gmelinii) wood, the propagation mechanism of stress wave was explored, and a theoretical model of the propagation velocity of stress waves in the three-dimensional space of wood was developed. The cross and longitudinal propagation velocities of stress wave were measured in larch wood under different moisture contents (46% to 87%, 56% to 96%, 20% to 62%, and 11% to 30%) in a laboratory setting. The relationships between the propagation velocity of stress waves and the direction angle or chord angle with different moisture contents were analyzed, and the three-dimensional regression models among four parameters were established. The analysis results indicated that under the same moisture content, stress wave velocity increased as the direction angle increased and decreased as chord angle increased, and the radial velocity was the largest. Under different moisture contents, stress wave velocity gradually decreased as moisture content increased, and the stress wave velocity was more noticeably affected by moisture content when moisture content was below the fiber saturation point (FSP, 30%). The nonlinear regression models of the direction angle, chord angle, moisture content, and the propagation velocity of stress wave fit the experiment data well (R2 ≥ 0.97).

Modified Surface Wave Velocity Measurement Technique in Concrete

2006 ◽  
pp. 314-317
Author(s):  
Sung Woo Shin ◽  
Chung Bang Yun ◽  
Won Joon Song ◽  
Joon Hyun Lee
Keyword(s):  
Surface Wave ◽  
Wave Velocity ◽  
Measurement Technique ◽  
Velocity Measurement ◽  
Surface Wave Velocity ◽  
Modified Surface

Variation in tree growth characteristics, stress-wave velocity, and Pilodyn penetration of 24-year-old teak (Tectona grandis) trees originating in 21 seed provenances planted in Indonesia

2013 ◽  
Vol 59 (6) ◽  
pp. 512-516 ◽  
Author(s):  
Fanny Hidayati ◽  
Futoshi Ishiguri ◽  
Kazuya Iizuka ◽  
Kazuko Makino ◽  
Yuya Takashima ◽  
...  
Keyword(s):  
Wave Velocity ◽  
Stress Wave ◽  
Tree Growth ◽  
Tectona Grandis ◽  
Growth Characteristics ◽  
Stress Wave Velocity ◽  
Pilodyn Penetration

STRESS WAVE VELOCITY AND CRACK SYSTEM OF A MEDIUM *

1974 ◽  
Vol 22 (4) ◽  
pp. 710-721
Author(s):  
V. SCHENK ◽  
Z. SCHENKOVA
Keyword(s):  
Wave Velocity ◽  
Stress Wave ◽  
Crack System ◽  
Stress Wave Velocity

Modified Surface Wave Velocity Measurement Technique in Concrete

2006 ◽  
Vol 321-323 ◽  
pp. 314-317 ◽  
Author(s):  
Sung Woo Shin ◽  
Chung Bang Yun ◽  
Won Joon Song ◽  
Joon Hyun Lee
Keyword(s):  
Experimental Study ◽  
Wavelet Transform ◽  
Surface Wave ◽  
Wave Velocity ◽  
Measurement Technique ◽  
Velocity Measurement ◽  
Maximum Energy ◽  
Continuous Wavelet ◽  
Surface Wave Velocity ◽  
Modified Surface

A modified one-sided measurement technique is proposed for Rayleigh wave (R-wave) velocity measurement in concrete. In this study, the maximum energy arrival concept is adopted to determine the wave velocity by employing its continuous wavelet transform. Experimental study was performed to show the effectiveness of the proposed method. Results reveal that the proposed method can be effectively used to measure the R-wave velocity in concrete structures.

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