scholarly journals Defect detection of concrete in infrastructure based on Rayleigh wave propagation generated by laser-induced plasma shock waves

2022 ◽  
pp. 107039
Author(s):  
Sho Wakata ◽  
Naoki Hosoya ◽  
Noboru Hasegawa ◽  
Masaharu Nisikino
Keyword(s):  
Wave Propagation ◽  
Shock Waves ◽  
Rayleigh Wave ◽  
Defect Detection ◽  
Laser Induced Plasma ◽  
Plasma Shock

scholarly journals Soft Mango Firmness Assessment Based on Rayleigh Waves Generated by a Laser-Induced Plasma Shock Wave Technique

Foods ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 323
Author(s):  
Nayuta Arai ◽  
Masafumi Miyake ◽  
Kengo Yamamoto ◽  
Itsuro Kajiwara ◽  
Naoki Hosoya
Keyword(s):  
Wave Propagation ◽  
Rayleigh Wave ◽  
Propagation Velocity ◽  
Vibration Mode ◽  
Fruit Firmness ◽  
Wave Propagation Velocity ◽  
Laser Induced Plasma ◽  
Wave Technique ◽  
Plasma Shock Wave ◽  
Plasma Shock

Many methods based on acoustic vibration characteristics have been studied to indirectly assess fruit ripeness via fruit firmness. Among these, the frequency of the 0S2 vibration mode measured on the equator has been examined, but soft-flesh fruit do not show the 0S2 vibration mode. In this study, a Rayleigh wave is generated on a soft mango fruit using the impulse excitation force generated by a laser-induced plasma shock wave technique. Then, the flesh firmness of mangoes is assessed in a non-contact and non-destructive manner by observing the Rayleigh wave propagation velocity because it is correlated with the firmness (shear elasticity), density, and Poisson’s ratio of an object. If the changes in the density and Poisson’s ratio are small enough to be ignored during storage, then the Rayleigh wave propagation velocity is strongly correlated to fruit firmness. Here, we measure the Rayleigh wave propagation velocity and investigate the effect of storage time. Specifically, we investigate the changes in firmness caused by ripening. The Rayleigh wave propagation velocity on the equator of Kent mangoes tended to decrease by over 4% in 96 h. The Rayleigh wave measured on two different lines propagated independent distance and showed a different change rate of propagation velocity during 96-h storage. Furthermore, we consider the reliability of our method by investigating the interaction of a mango seed on the Rayleigh wave propagation velocity.

Instantaneous measurements of laser-induced plasma shock waves with an optical fiber sensor

1999 ◽  
Vol 168 (5-6) ◽  
pp. 343-347 ◽  
Author(s):  
J.P. Chen ◽  
X.W. Ni ◽  
J. Lu ◽  
B.M. Bian
Keyword(s):  
Shock Waves ◽  
Optical Fiber ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Laser Induced Plasma ◽  
Plasma Shock

Nanoparticle Removal Using Laser-Induced Plasma Shock Waves

2007 ◽  
Vol 25 (1) ◽  
pp. 91-106 ◽  
Author(s):  
M. D. Murthy Peri ◽  
Ivin Varghese ◽  
Dong Zhou ◽  
Arun John ◽  
Chen Li ◽  
...  
Keyword(s):  
Shock Waves ◽  
Laser Induced Plasma ◽  
Nanoparticle Removal ◽  
Plasma Shock

Silicon Surface Topography by Laser-Induced Plasma Shock Waves in the Air and under Water

2015 ◽  
Vol 52 (10) ◽  
pp. 101405
Author(s):  
周子豪 Zhou Zihao ◽  
李晓红 Li Xiaohong ◽  
谢长鑫 Xie Changxin ◽  
朱敏 Zhu Ming ◽  
冯杰 Feng Jie
Keyword(s):  
Shock Waves ◽  
Surface Topography ◽  
Silicon Surface ◽  
Laser Induced Plasma ◽  
Plasma Shock

Study of laser-induced plasma shock waves by the probe beam deflection technique

2009 ◽  
Vol 7 (5) ◽  
pp. 410-412 ◽  
Author(s):  
钱彦 Yan Qian ◽  
陆建 Jian Lu ◽  
倪晓武 Xiaowu Ni
Keyword(s):  
Shock Waves ◽  
Probe Beam ◽  
Beam Deflection ◽  
Laser Induced Plasma ◽  
Plasma Shock

scholarly journals The investigation of laser-induced plasma shock wave propagation in liquids

2004 ◽  
Vol 53 (2) ◽  
pp. 508
Author(s):  
Bian Bao-Min ◽  
Chen Xiao ◽  
Xia Ming ◽  
Yang Ling ◽  
Shen Zhong-Hua
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Shock Wave Propagation ◽  
Laser Induced Plasma ◽  
Plasma Shock Wave ◽  
Plasma Shock

Laser-induced plasma shock wave propagation underwater

Optik ◽  
2013 ◽  
Vol 124 (12) ◽  
pp. 1122-1124 ◽  
Author(s):  
Rui Zhao ◽  
Rong-qing Xu ◽  
Zhong-cheng Liang
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Shock Wave Propagation ◽  
Laser Induced Plasma ◽  
Plasma Shock Wave ◽  
Plasma Shock

Molecular-level mechanisms of nanoparticle detachment in laser-induced plasma shock waves

2006 ◽  
Vol 88 (17) ◽  
pp. 173109 ◽  
Author(s):  
Dong Zhou ◽  
Cetin Cetinkaya
Keyword(s):  
Shock Waves ◽  
Molecular Level ◽  
Laser Induced Plasma ◽  
Plasma Shock
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