Enhancing Time-of-Flight Diffraction (TOFD) Inspection through an Innovative Curved-Sole Probe Design. [PDF]
Sensors (Basel)Time-of-Flight Diffraction (TOFD) is a method of ultrasonic testing (UT) that is widely established as a non-destructive technique (NDT) mainly used for the inspection of welds.
Sanchez Duo I +3 more
europepmc +6 more sources
Machines, 2022 Ultrasonic time-of-flight diffraction (TOFD) is a non-destructive testing (NDT) technique for weld inspection that has gained popularity in the industry, due to its ability to detect, position, and size defects based on the time difference of the echo ...
Sulochana Subramaniam +2 more
doaj +6 more sources
Towards an Alternative to Time of Flight Diffraction Using Instantaneous Phase Coherence Imaging for Characterization of Crack-Like Defects. [PDF]
Sensors (Basel), 2021 Time of flight diffraction (TOFD) is considered a reliable non-destructive testing method for the inspection of welds using a pair of single-element probes.
Gauthier B +3 more
europepmc +2 more sources
Multi-Mode Total Focusing Method (MTFM) to Detect High-Temperature Hydrogen Attack (HTHA) – A Review [PDF]
Journal of Materials Exploration and Findings, 2023 High temperature hydrogen attack (HTHA) is a commonly observed harm component in carbon steels exposed to high temperature and pressure in a hydrogen-rich environment. Hydrogen together with carbon responds to produce methane.
Anjar Oktikawati +2 more
doaj +3 more sources
Broadband and high sensitive time-of-flight diffraction ultrasonic transducers based on PMNT/epoxy 1-3 piezoelectric composite. [PDF]
Sensors (Basel), 2015 5–6 MHz PMNT/epoxy 1–3 composites were prepared by a modified dice-and-fill method. They exhibit excellent properties for ultrasonic transducer applications, such as ultrahigh thickness electromechanical coupling coefficient kt (85.7%), large ...
Liu D +8 more
europepmc +2 more sources
Ultrasonic Time-of-Flight Diffraction Imaging Enhancement for Pipeline Girth Weld Testing via Time-Domain Sparse Deconvolution and Frequency-Domain Synthetic Aperture Focusing. [PDF]
Sensors (Basel)Ultrasonic TOFD imaging, as an important non-destructive testing method, has a wide range of applications in pipeline girth weld inspection and testing.
Wu E, Han Y, Yu B, Zhou W, Tian S.
europepmc +2 more sources
Modeling of ultrasonic testing Time of Flight Diffraction (ToFD) technique by Finite Element Method [PDF]
مجله مدل سازی در مهندسی, 2015 Time-of-flight diffraction (ToFD) is an ultrasonic nondestructive testing technique used for detection, sizing and location of defects in industrial parts. This method has better abilities and benefits than other nondestructive testing techniques.
Somayeh Khorasani, Farhang Honarvar
doaj +2 more sources
The Maximum Entropy Method in Ultrasonic Non-Destructive Testing-Increasing the Resolution, Image Noise Reduction and Echo Acquisition Rate. [PDF]
Entropy (Basel), 2018 The use of linear methods, for example, the Combined Synthetic Aperture Focusing Technique (C–SAFT), does not allow one to obtain images with high resolution and low noise, especially structural noise in all cases. Non-linear methods should improve
Bazulin EG.
europepmc +2 more sources
Principles and Applications of Ultrasonic-Based Nondestructive Methods for Self-Healing in Cementitious Materials. [PDF]
Materials (Basel), 2017 Recently, self-healing technologies have emerged as a promising approach to extend the service life of social infrastructure in the field of concrete construction.
Ahn E, Kim H, Sim SH, Shin SW, Shin M.
europepmc +4 more sources
Design and Validation of an Articulated Sensor Carrier to Improve the Automatic Pipeline Inspection. [PDF]
Sensors (Basel), 2019 Pipeline inspection gauges (PIGs) carry out automatic pipeline inspection with nondestructive testing (NDT) technologies like ultrasound, magnetic flux leakage, and eddy current.
Ramirez-Martinez A +4 more
europepmc +2 more sources