Results 241 to 250 of about 34,542 (304)

Recent advances in boosting interfacial bubble dynamics with external fields

Droplet, EarlyView.
External physical fields, including acoustic, magnetic, thermal, mechanical, and optical stimuli, accelerate the entire bubble‐dynamics sequence of nucleation, growth, and detachment. Abstract The efficiency of industrial electrocatalytic reactions depends not only on generating gaseous products but also on their detachment from the catalyst surface ...
Wenlu Xie, Yanwei Zhang, Yi Liu, Yiming Wei, Jing‐Li Luo, Chenyu Xu   +5 more
wiley   +1 more source

Study and Optimal Design of the Integrated 37° Unidirectional SV-EMAT for Rapid Rail Flaw Detection. [PDF]

Sensors (Basel)
Yuan W.
europepmc   +1 more source

Review of Non-Destructive Testing for Wind Turbine Bolts. [PDF]

Sensors (Basel)
Sun H, Dong J, Liu H, Shi W, Feng Q, Yao K, Huang S, Peng L, Cai Z.   +8 more
europepmc   +1 more source

Research on Piezoelectric Guided Wave Frequency Diverse Array-Based Damage Location Method for Thin-Walled Structures. [PDF]

Micromachines (Basel)
Wang C, Hu Q, Zhong Y.
europepmc   +1 more source

Triple-negative complementary metamaterial for ultrasound transmission through elastic barrier. [PDF]

Sci Rep
Lee KY, Jeon W.
europepmc   +1 more source

Investigating the Correlation Between Corrosion-Induced Bolt Head Damage and Preload Loss Using Ultrasonic Testing. [PDF]

Sensors (Basel)
Shah J, Wang H, Mukherjee A.
europepmc   +1 more source

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Chirp excitation of ultrasonic guided waves

Ultrasonics, 2013
Most ultrasonic guided wave methods require tone burst excitations to achieve some degree of mode purity while maintaining temporal resolution. In addition, it is often desirable to acquire data using multiple frequencies, particularly during method development when the best frequency for a specific application is not known.
Michaels, Jennifer E., Lee, Sang Jun, Croxford, Anthony J., Wilcox, Paul D.   +3 more
openaire   +3 more sources

Ultrasonic guided wave vibration formulation

AIP Conference Proceedings, 2012
A novel transient-guided-wave-based approach to predicting natural vibration frequencies and mode shapes of a semi-infinite plate has been developed. This theory uses the orthogonal propagating and evanescent guided wave modes to fully satisfy the elasticity structural vibration boundary value problem for the structure.
C. Borigo, F. Yan, Y. Liang, J. L. Rose
openaire   +1 more source

Guided wave helical ultrasonic tomography of pipes

The Journal of the Acoustical Society of America, 2003
Ultrasonic guided waves have been used for a wide variety of ultrasonic inspection techniques. We describe here a new variation called helical ultrasound tomography (HUT) that uses guided ultrasonic waves along with tomographic reconstruction algorithms that have been developed by seismologists for what they call “cross borehole” tomography.
Kevin R, Leonard, Mark K, Hinders
openaire   +2 more sources