scholarly journals Characterization of surface damage of a solid plate under tensile loading using nonlinear Rayleigh waves

2011 ◽  
Vol 1 (5) ◽  
pp. 051005 ◽  
Author(s):  
Guoshuang Shui ◽  
Yuesheng Wang
Keyword(s):  
Rayleigh Waves ◽  
Tensile Loading ◽  
Surface Damage ◽  
Solid Plate

Remote characterization of surface slots by enhanced laser-generated ultrasonic Rayleigh waves

Ultrasonics ◽  
2021 ◽  
pp. 106595
Author(s):  
Jing Xiao ◽  
Jian Chen ◽  
Xudong Yu ◽  
Danylo Lisevych ◽  
Zheng Fan
Keyword(s):  
Rayleigh Waves

Tubing String Thread Sealing Surfaces Damage Evaluation Based on Acoustic Elasticity Theory

2019 ◽  
Vol 944 ◽  
pp. 828-834 ◽  
Author(s):  
Jian Jun Wang ◽  
Jian Hua Sun ◽  
Shang Yu Yang ◽  
Yao Rong Feng ◽  
Kai Lin
Keyword(s):  
Surface Roughness ◽  
Elasticity Theory ◽  
Contact Stress ◽  
Surface Characterization ◽  
Surface Damage ◽  
Center Frequency ◽  
Sealing Performance ◽  
Tubing String ◽  
Acoustic Elasticity

During the processing of tubing premium threaded made up, the degree of the thread sealing surface intactness will directly affect the sealing performance of the string. Nevertheless, there are some difficulties to detect the damage of the engaged sealing surface effectively. In the present study the sealing surface damage was judged by the sealing surface contact stress’s relative changes according to the acoustic elasticity theory,. At the same time, the wear defects generated at the tubing sealing surface, during the tubing made up, contrasted with the wear and unworn surface roughness of coupling ultrasonic detected about the sealing surface. The results showed that with the acoustic amplitude evaluated the sealing contact stress was susceptible to the influence of surface roughness of coupling. But the reflection wave with the center frequency on the sealing surface characterization of the contact stress could avoid this problem effectively.

scholarly journals Characterization of Composite Laminates Subjected to Repeated Indentation

2014 ◽  
Vol 14 (2) ◽  
pp. 46-56
Author(s):  
M. Ashok Kumar ◽  
A.M.K. Prasad ◽  
D.V. Ravishankar ◽  
G. Giridhar
Keyword(s):  
Stainless Steel ◽  
Bearing Capacity ◽  
Fiber Orientation ◽  
Composite Laminates ◽  
Testing Machine ◽  
High Strength ◽  
Surface Damage ◽  
Load Bearing Capacity ◽  
Universal Testing

Abstract The effect of the fiber orientation in a laminate is investigated experimentally when subjected repeated quasistatic indentation. All the laminates with different fiber orientation are subjected to indentation with a stainless steel spherical indenter of diameter 8.0mm on a universal testing machine for a maximum indenter displacement of 4mm. The rate of indenter displacement was 0.5mm/minute. Different parameters like load bearing capacity, indentation diameter, area of surface damage, etc., were recorded after 4mm of indenter displacement. All the parameters were studied and compared to evaluate the laminate with high strength

scholarly journals In Situ Structural Characterization of Functionally Graded Ni–Ti Shape Memory Alloy During Tensile Loading

2019 ◽  
Vol 5 (4) ◽  
pp. 457-467 ◽  
Author(s):  
Francisco M. Braz Fernandes ◽  
Edgar Camacho ◽  
Patrícia F. Rodrigues ◽  
Patrick Inácio ◽  
Telmo G. Santos ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Structural Characterization ◽  
Tensile Loading ◽  
Functionally Graded

scholarly journals Microstructural characterization of surface damage through ultra-short laser pulses

2014 ◽  
Author(s):  
Václav Ocelík ◽  
Jozef Vincenc Oboňa ◽  
Johann Z. P. Skolski ◽  
Gert-Willem R. B. E. Römer ◽  
Albert J. Huis in t’ Veld ◽  
...  
Keyword(s):  
Microstructural Characterization ◽  
Surface Damage ◽  
Laser Pulses ◽  
Short Laser Pulses
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