Results 61 to 70 of about 514,588 (251)
A Composite Pulse Excitation Technique for Air-Coupled Ultrasonic Detection of Defects in Wood
SensorsTo overcome the problems of the low signal-to-noise ratio and poor performance of wood ultrasonic images caused by ring-down vibrations during the ultrasonic quality detection of wood, a composite pulse excitation technique using a wood air-coupled ...
Jun Wang +5 more
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Application of Ultrasonic C-Scan Techniques for Tracing Defects in Laminated Composite Materials
, 2011 In this paper practical ultrasonic C-scan techniques for NDT of laminated composite materials are developed and applied, with an aim to trace specific artificial defects.
T. Hasiotis +2 more
semanticscholar +1 more source
The Risk of Over‑Reliance on Weld Overlays in Phased Array Ultrasonic Testing Interpretation
e-Journal of Nondestructive TestingPhased array ultrasonic testing (PAUT) instruments often incorporate optional weld overlays that superimpose an assumed joint geometry on the sectorial scan (S‑scan). These overlays aid interpretation and scan planning by positioning signals relative to
Zachariah D. Lute
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Ultrasonic scanning system for in-place inspection of brazed-tube joints [PDF]
, 1970 System detects defects of .051 cm in diameter and larger. System incorporates scanning head assembly including boot enclosed transducer, slip ring assembly, drive mechanism, and servotransmitter.
Haralson, H. S. +2 more
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Rotational-invariant speckle-scanning ultrasonography through thick bones
Scientific Reports, 2021 Ultrasonography is a major medical imaging technique that has been broadly applied in many disease diagnoses. However, due to strong aberration and scattering in the human skull, high-resolution transcranial ultrasonic imaging remains a grand challenge ...
Siyi Liang, Lidai Wang
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Interface Microstructures and Bond Formation in Ultrasonic Consolidation [PDF]
, 2007 The quality of ultrasonically consolidated parts critically depends on the bond quality between individual metal foils. This necessitates a detailed understanding of interface microstructures and ultrasonic bonding mechanism.
Adams, B. L. +5 more
core +1 more source
Scientific Reports, 2023 Ultrasonic testing is an important non-destructive testing method, which is sensitive to the defects in the diffusion bonding interface. Ultrasonic testing of diffusion bonding interfaces in complex-surface components is a challenge due to the geometry ...
Gongpeng Yang +7 more
doaj +1 more source
A Combined Signal Display Method for Hollow Axle Automated Ultrasonic Test System
Kongzhi Yu Xinxi Jishu, 2018 Hollow axle automated ultrasonic test system uses high speed spinning probes inside the hole of the axle. This generates massive data containing echo wave and position information.
TANG Lixin
doaj
Reviews on Advanced Materials ScienceMultilayer adhesive bonded structures/materials (MABS) are widely used as structural components, especially in the field of aerospace. However, for MABS workpieces, the facts that the weak echo of the deep interfacial debonding defects (DB) caused by the
Guo Canzhi +5 more
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Recognition of the internal situation of aircraft skin based on deep learning
AIP Advances, 2021 The aircraft skin is an important component of the aircraft, and its integrity affects the flight performance and safety performance of the aircraft. Damage detection technology with ultrasonic nondestructive testing as the core has played an important ...
Caizhi Li +6 more
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