Results 191 to 200 of about 514,588 (251)
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Comparison of algorithms to quantify the damaged area in CFRP ultrasonic scans
, 2020CFRP structures can be damaged in different ways during service. Therefore, the effect of a damage on the structural behaviour has to be considered during the design process. Often the damage size and shape are used to characterize damages.
A. Hauffe, F. Hähnel, K. Wolf
semanticscholar +1 more source
Designing and signal processing of intelligent inspection pig applying ultrasonic A-scan
IEEE Ultrasonics Symposium, 2005., 2006An ultrasonic inspection system is designed to inspect the damage state of Chinese pipelines. The architecture, hardware configuration, and signal processing strategy are discussed. The system can climb at the speed of 15-20 mm/s in pipelines with the diameter from 150 mm to 350 mm.
null Chen Tianlu +3 more
openaire +1 more source
NDT & E international, 2019
In order to quantitatively compare the reliability of pulsed thermography and ultrasonic testing techniques, a set of thirty-five Carbon Fiber Reinforced Plastic (CFRP) composite panels with impact damages are inspected by pulsed thermography and ...
Yuxia Duan +7 more
semanticscholar +1 more source
In order to quantitatively compare the reliability of pulsed thermography and ultrasonic testing techniques, a set of thirty-five Carbon Fiber Reinforced Plastic (CFRP) composite panels with impact damages are inspected by pulsed thermography and ...
Yuxia Duan +7 more
semanticscholar +1 more source
, 2020
This paper presents a combination of the Vibration-based method and Non-destructive Ultrasonic C-scan method to identify, locate, and quantify the damage in impacted carbon composite fiber reinforced structure.
S. Patil, D. Mallikarjuna Reddy
semanticscholar +1 more source
This paper presents a combination of the Vibration-based method and Non-destructive Ultrasonic C-scan method to identify, locate, and quantify the damage in impacted carbon composite fiber reinforced structure.
S. Patil, D. Mallikarjuna Reddy
semanticscholar +1 more source
Quality control of ultrasonic bonding tools using a Scanning White Light Interferometer
2010 IEEE International Ultrasonics Symposium, 2010Working surface of the ultrasonic bonding wedge must adhere to tight specifications to permit strong and repeatable ultrasonic wire bonding. Even minute changes in the wedge surface reduce the yield, especially when bonding to fragile materials. Consequently the ability to determine the profile of the bonding surface of the wedge could contribute to ...
Ville Heikkinen +6 more
openaire +1 more source
, 2020
In this study, ZnMoO4 nanofibers were synthesized in double distilled water solvent within clean and easy ultrasonic bath method and also investigate their supercapacitive ability.
R. Roshani, A. Tadjarodi
semanticscholar +1 more source
In this study, ZnMoO4 nanofibers were synthesized in double distilled water solvent within clean and easy ultrasonic bath method and also investigate their supercapacitive ability.
R. Roshani, A. Tadjarodi
semanticscholar +1 more source
Quantitative characterization of carotid atheromatous plaques using ultrasonic rf A-scan data
Ultrasonics, 1995Carotid atheromatous plaques are widely accepted as forming a source of emboli which may cause a transient or permanent neurological deficit. The aim of this investigation is to carry out quantitative characterization of plaque, blood and vessel walls using rf A-scan data.
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Automated detection of compressed air leaks using a scanning ultrasonic sensor system
2016 IEEE Sensors Applications Symposium (SAS), 2016Compressed air is a costly but useful utility in production facilities. However, losses up to 50 percent are reported due to leakage. In this paper a system for detecting compressed air leaks using its air-coupled acoustic emissions is presented. An ultrasonic microphone is combined with a pan-tilt unit to automatically scan an area. The directivity of
Thomas Guenther, Andreas Kroll
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High resolution mapping of nonlinear MHz ultrasonic fields using a scanned scatterer
IEEE Symposium on Ultrasonics, 2003, 2004We show that a 2 MHz HIFU field can be measured in water and with high spatial resolution by placing a small scatterer in the field and sensing the scattered wave. We use a bistatic configuration placing a hydrophone at a safe distance. Glass and steel tips are fabricated using simple techniques and evaluated.
P. Kaczkowski +3 more
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Minimum distance processor for biological tissues classification from A-scan ultrasonic signals
Proceedings 1995 Canadian Conference on Electrical and Computer Engineering, 2002A new technique for biological tissue classification is presented. The classification problem was to find the correct tissue type based on the observed data vectors which were assumed to consist of the true underlying backscattered signal and an additive white Gaussian noise due to the measuring system.
I. Diouf, K.L. Watkin
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