Results 41 to 50 of about 514,588 (251)

A noncontact ultrasonic platform for structural inspection [PDF]

, 2011
Miniature robotic vehicles are receiving increasing attention for use in nondestructive testing (NDE) due to their attractiveness in terms of cost, safety, and their accessibility to areas where manual inspection is not practical. Conventional ultrasonic
Dobie, Gordon, Galbraith, Walter, Hayward, Gordon, Pierce, S. Gareth, Summan, Rahul   +4 more
core   +1 more source

Improving Depth Resolution of Ultrasonic Phased Array Imaging to Inspect Aerospace Composite Structures †

Italian National Conference on Sensors, 2020
In this paper, we present challenges and achievements in development and use of a compact ultrasonic Phased Array (PA) module with signal processing and imaging technology for autonomous non-destructive evaluation of composite aerospace structures.
R. Mohammadkhani, L. Zanotti Fragonara, Janardhan Padiyar M, I. Petrunin, J. Raposo, A. Tsourdos, Iain Gray   +6 more
semanticscholar   +1 more source

Study on Denoising Method of Weld Defect Signal Based on SSA-VMD-WPD

Applied Sciences
Defects in welds can affect the structural safety and reliability of workpieces. Currently, the method of using phased array ultrasonic inspection technology for non-destructive testing of weld structures with high detection efficiency, good sensitivity,
Xiangqing Chen, Sifan Gong, Wei Pan, Youqing Kang, Weili Gong   +4 more
doaj   +1 more source

Ultrasonic phased array flexible coupling detection of defects in high-voltage cable terminal lead seals

Frontiers in Mechanical Engineering
High-voltage cable terminal lead seals may develop defects such as holes, cracks, or delamination due to substandard installation quality or external forces during operation.
Peng Ziping, Zheng Jishi, Zhen Zhiming, Huang Yaosheng, Li Xiaobin, Cai Qiushen   +5 more
doaj   +1 more source

Experimental and numerical polar scans of several anisotropic materials using pulsed and harmonic ultrasonic beams [PDF]

, 2011
Ultrasonic non-destructive testing is a well known technique in present days, in which the C-scan is the most wide spread. Though, because of the inherent limitations of most methods to quantitatively characterize (damaged) composite materials, the quest
De Baere, Ives, Degrieck, Joris, Gu, Jun, Kersemans, Mathias, Sol, Hugo, Van Paepegem, Wim, Zastavnik, Filip   +6 more
core  

Enhanced composite plate impact damage detection and characterisation using X-Ray refraction and scattering contrast combined with ultrasonic imaging

, 2020
Ultrasonic imaging and radiography are widely used in the aerospace industry for non-destructive evaluation of damage in fibre-reinforced composites.
D. Shoukroun, L. Massimi, F. Iacoviello, M. Endrizzi, D. Bate, A. Olivo, P. Fromme   +6 more
semanticscholar   +1 more source

Ballpoint probe gives optimum results in ultrasonic testing [PDF]

, 1967
Ballpoint-type ultrasonic probe assembly focuses its beam precisely on the bond lines of a composite thin face sheet structure when testing for bond integrity.
Melton, R. E.
core   +1 more source

Characterising pressure and bruising in apple fruit [PDF]

, 2007
A large percentage of apples are wasted each year due to damage such as bruising. The apple journey from orchard to supermarket is very complex and apples are subjected to a variety of static and dynamic loads that could result in this damage occurring ...
A. Yoxall, Abbott, Bollen, Bollen, Cliff, Drinkwater, Dwyer-Joyce, Garcia, Herold, Hodgson, Holt, Joyce, Kendall, Krautkrämer, L.A. Canty, Labavitch, Lu, Lu, M.B. Marshall, Marshall, Mohsenin, Moustafa, O’Loughlin, Pang, Pang, Peggie, Preston, R. Lewis, Rabelo, Roudot, Studman, Williams   +31 more
core   +1 more source

B-Scan Imaging and 3D Visualization of Hardened Layer Depth Profile in Linear Guide Rails Based on Ultrasonic Shear Wave Backscattering Technique

Acoustics
In order to measure the depth profile of the heat-treated case-hardened layer of linear guides, this paper proposes a B-scan imaging and 3D visualization method for detecting the depth profile of the case-hardened layer of linear guides based on the ...
Peiqiang Chen, Lingtong Chen, Mingyang Xue, Chenlong Yang   +3 more
doaj   +1 more source

Numerical Simulation and Experimental Study of Fluid-Solid Coupling-Based Air-Coupled Ultrasonic Detection of Stomata Defect of Lithium-Ion Battery

Sensors, 2019
Aiming at the characteristics of the periodic stacking structure of a lithium-ion battery core and the corresponding relationship between the air-coupled ultrasonic transmission initial wave and the wave propagation mode in each layer medium of a lithium-
Honggang Li, Zhenggan Zhou
doaj   +1 more source