Results 21 to 30 of about 725 (150)
Nuclear Engineering and Technology, 2017 During the fabrication process of reactor vessel head penetration (RVHP), the grain size of the tube material can be changed by hot or cold work and the inner side of the tube can also be shrunk due to welding outside of the tube. Several nonregular time-
Kyungcho Kim +5 more
doaj +1 more source
Multiframe Ultrasonic TOFD Weld Inspection Imaging Based on Wavelet Transform and Image Registration
Journal of Sensors, Volume 2018, Issue 1, 2018., 2018 TOFD (time of flight diffraction) is a kind of weld defect detection technology by using ultrasonic diffraction wave signal. Because the diffraction intensity is far less than ultrasonic echo wave intensity, thus, the noise contained in TOFD signal is fairly large, and the formed image is not clear enough.
Jiaxu Duan +5 more
wiley +1 more source
A review of fatigue damage detection and measurement techniques [PDF]
, 2021 A vast amount of research has been carried out towards the goal of quantifying changes related to the fatigue damaging process in materials throughout the fatigue life.
Bjørheim, Fredrik +2 more
core +1 more source
Tangential Homology for Defect Detection in the Time of Flight Diffraction Method (TOFD) [PDF]
PAMM, 2016 AbstractUltrasonic non‐destructive testing (NDT) techniques are widely used in industry to evaluate properties of a component, material or system without causing any damage. The time of flight diffraction method (TOFD) is regarded as a valuable procedure for the detection of welding defects.
Jose F. Cuenca +3 more
openaire +1 more source
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
A review of miniaturised Non-Destructive Testing technologies for in-situ inspections [PDF]
, 2018 Non-destructive testing (NDT) techniques have become attractive trends of product manufacturing, installation and post-maintenance in the aerospace, automotive and manufacturing industry, because of its benefits such as cost saving, easy to use and high ...
Addepalli +12 more
core +1 more source
Cracked Rotors, A Survey on Static and Dynamic Behaviour Including Modelling and Diagnosis [PDF]
, 2009 Cracks can develop in rotating shafts and can propagate to relevant depths without affecting consistently the normal operating conditions of the shaft.
E. Tanzi, N. Bachschmid, P. Pennacchi
core +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
Non-destructive testing and fracture mechanics: A short discussion [PDF]
, 2016 A short discussion is provided on the relationship between non-destructive testing and fracture mechanics. The basic tasks behind this are to guarantee the safety of a component at a potential hazard loading event, to specify inspection intervals or ...
Carboni, Michele +2 more
core +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