Results 11 to 20 of about 32,268 (336)

Non-Destructive Inspection of Impact Damage in Composite Aircraft Panels by Ultrasonic Guided Waves and Statistical Processing. [PDF]

open access: yesMaterials (Basel), 2017
This paper discusses a non-destructive evaluation (NDE) technique for the detection of damage in composite aircraft structures following high energy wide area blunt impact (HEWABI) from ground service equipment (GSE), such as heavy cargo loaders and ...
Capriotti M, Kim HE, Scalea FLD, Kim H.
europepmc   +4 more sources

Applied Sciences Special Issue: Ultrasonic Guided Waves [PDF]

open access: yesApplied Sciences, 2019
The propagation of ultrasonic guided waves in solids is an important area of scientific inquiry due primarily to their practical applications for the nondestructive characterization of materials, such as nondestructive inspection, quality assurance ...
Clifford J. Lissenden
doaj   +2 more sources

Evaluation of Welded Lap Joints Using Ultrasonic Guided Waves [PDF]

open access: yesSensors
Welded lap joints play a vital role in a wide range of engineering structures such as pipelines, storage tanks, pressure vessels, and ship hulls. This study aims to investigate the propagation of ultrasonic guided waves in steel welded lap joints for the
Hussain Altammar   +1 more
doaj   +2 more sources

The Study of Non-Detection Zones in Conventional Long-Distance Ultrasonic Guided Wave Inspection on Square Steel Bars [PDF]

open access: goldApplied Sciences, 2018
In a low-frequency ultrasonic guided wave dual-probe flaw inspection of a square steel bar with a finite length boundary, the flaw reflected pulse wave cannot be identified using conventional time monitoring when the flaw is located near the reflection ...
Lei Zhang   +3 more
doaj   +2 more sources

Numerical Study on Ultrasonic Guided Waves for the Inspection of Polygonal Drill Pipes [PDF]

open access: yesSensors, 2019
The polygonal drill pipe is one of the most critical yet weakest part in a high-torque drill machine. The inspection of a polygonal drill pipe to avoid its failure and thus to ensure safe operation of the drilling machine is of great importance. However,
Xiang Wan   +5 more
doaj   +2 more sources

Experimental and Numerical Studies on Bond Quality of Fully Grouted Rockbolt under Confining Pressure and Pull-Out Load

open access: yesShock and Vibration, 2022
In mining engineering, the in situ stress changes with the stress induced by the surrounding mining activities. It positively or negatively affects the propagation of ultrasonic guided waves in rockbolts.
Shuisheng Yu, Leilei Niu, Jin Chen
doaj   +1 more source

Detection of Arbitrary Frequency Ultrasonic Guided Wave Signals Based on the Time-Shift Duffing Oscillator

open access: yesIEEE Access, 2021
Low detection accuracy and narrow detection range are observed when detecting weak guided wave signals with the Duffing oscillator as a result of a limited frequency band.
Jing Wu   +5 more
doaj   +1 more source

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