Results 21 to 30 of about 134 (123)
Ultrasonic Flaw Imaging via Multipath Exploitation
Advances in Acoustics and Vibration, Volume 2012, Issue 1, 2012., 2012 We consider ultrasonic imaging for the visualization of flaws in a material. Ultrasonic imaging is a powerful nondestructive testing (NDT) tool which assesses material conditions via the detection, localization, and classification of flaws inside a structure. We utilize reflections of ultrasonic signals which occur when encountering different media and
Yimin D. Zhang +4 more
wiley +1 more source
Austenitic Biomaterial Cracks Evaluation by Advanced Nondestructive Techniques
Advances in Electrical and Electronic Engineering, 2017 The article deals with Non-Destructive Evaluation (NDE) of austenitic stainless steels. Eddy current, ultrasonic testing and non-contact magnetic field mapping methods are used for this purpose.
Milan Smetana +3 more
doaj +1 more source
CIVA Confirmation of Frequency Dependence of TOFD Lateral Wave
e-Journal of Nondestructive TestingPulse-duration (ring-time) of the TOFD (Time of Flight Diffraction) lateral wave has been assumed to be based on the nominal frequency of the probe. With the improved damping used for TOFD applications, these probes now have had their ring-time reduced ...
Edward Ginzel, Edward Ginzel
doaj +1 more source
Neutron Time‐of‐Flight Texture Analysis
, 1991 Texture, Stress, and Microstructure, Volume 14, Issue 1, Page 59-64, 1991.
K. Feldmann +3 more
wiley +1 more source
Case Studies in Construction MaterialsTime-of-flight diffraction (TOFD) has been widely adopted for weld defect detection in bridge steel quality assurance due to its harmlessness to the human body, real-time performance, and satisfactory detection accuracy.
Yanfeng Gong +4 more
doaj +1 more source
CIVA as an Aid to Understanding TOFD Dead Zones
e-Journal of Nondestructive TestingTOFD (Time of Flight Diffraction) has been a popular ultrasonic testing method for many years. It has associated with it, limitations associated with the pulse duration.
Edward Ginzel
doaj +1 more source
Defect recognition of circumferential welds of pipelines in TOFD images based on YOLOv5
Hanjie xuebaoIn order to enhance defect recognition in time-of-flight diffraction (TOFD) scan images for circumferential welds of pipelines under conditions such as background signal interference and uneven sample distribution, an improved YOLOv5s network model was ...
Cheng XU +3 more
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e-Journal of Nondestructive TestingThe Total Focusing Method (TFM) technique is an advanced Non-Destructive Testing (NDT) Ultrasonic Testing (UT) technique. It is usually used together with special acquisition configurations such as Full Matrix Capture (FMC) or Plane Wave Imaging (PWI ...
Wang Ke, Weina Ke
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Highly Sensitive Phased Array Probes based on Capacitive Micromachined Ultrasonic Transducers
e-Journal of Nondestructive TestingCapacitive Micromachined Ultrasonic Transducers (CMUTs) offer a wide freedom of design for ultrasonic phased arrays. They are characterized, in comparison to piezoelectric transducers, by a higher sensitivity in receiving and a wider bandwidth based on ...
Uwe Voelz +3 more
doaj +1 more source
Corrosion of API 5L X60 Pipeline Steel in Soil and Surface Defects Detection by Ultrasonic Analysis
MetalsThe corrosion steels phenomenon is one of the main problems in the oil industry, such as in buried transmission pipelines used for high gas pressure for long distances.
Fatima Benkhedda +4 more
doaj +1 more source