Results 11 to 20 of about 5,098 (179)

Optimal Design of Sparse Matrix Phased Array Using Simulated Annealing for Volumetric Ultrasonic Imaging with Total Focusing Method [PDF]

Sensors
The total focusing method (TFM) is often considered to be the ‘gold standard’ for ultrasonic imaging in the field of nondestructive testing. The use of matrix phased arrays as probes allows for high-resolution volumetric TFM imaging.
Dmitry Olegovich Dolmatov, Vadim Yurevich Zhvyrblya   +1 more
doaj   +2 more sources

Single-Crystal Inspection Using an Adapted Total Focusing Method [PDF]

Sensors
Single-crystal superalloys have attracted considerable interest in aero engine blade manufacture due to their superior mechanical properties, which maintain structural integrity at high temperatures.
Iratxe Aizpurua-Maestre, Aitor De Miguel, Jose Luis Lanzagorta, Ewen Carcreff, Lander Galdos   +4 more
doaj   +2 more sources

Fast Ultrasonic Imaging with Total Focusing Method (TFM) for Inspection of Additively Manufactured Polymer Composite Component

ASNT 27th Annual Research Symposium Proceedings, 2018
Hossein Taheri, Lucas Koester, Timothy, Bigelow, Leonard J. Bond, Dominique Braconnier, Ewen Carcreff, Gavin Dao, Alan Caulder, Ahmed Arabi Hassen   +8 more
openaire   +4 more sources

Laser-induced ultrasonic measurements for the detection and reconstruction of surface defects

Acta Acustica, 2021
Laser-induced ultrasonic measurement is a non-contact non-destructive technology that can be employed for the testing and assessment of surface defects.
Qian Feiming, Xing Guangzhen, Yang Ping, Hu Pengcheng, Zou Limin, Koukoulas Triantafillos   +5 more
doaj   +1 more source

A Modified Wavenumber Algorithm of Multi-Layered Structures with Oblique Incidence Based on Full-Matrix Capture

Applied Sciences, 2021
Full-matrix capture (FMC)-based ultrasonic imaging provides good sensitivity to small defects in non-destructive testing and has gradually become a mainstream research topic.
Bei Yu, Haoran Jin, Yujian Mei, Jian Chen, Eryong Wu, Keji Yang   +5 more
doaj   +1 more source

The effect of ultrasound wave path estimation to defect characterization capability in half-skip total focusing method

Research and Review Journal of Nondestructive Testing, 2023
The total focusing method (TFM) is a post-processing imaging technique applied on full matrix capture (FMC) ultrasonic inspection (UT) dataset. In TFM the ultrasonic wave energy is synthetically focused on every pixel in the image region of interest ...
Xiangyu Lei, Håkan Wirdelius, Johan Carlson   +2 more
doaj   +1 more source

Low Frequency GFRP Imaging with Variable Aperture TFM

e-Journal of Nondestructive Testing, 2023
Graphite or glass fiber reinforced polymer (GFRP) inspections are usually made with a zero-degree linear scan (L-scan) (1). Total focusing may not be applicable for some anisotropic materials, but in some cases, TFM may increase the ultrasound imaging ...
Renato Nogueira, Philippe Rioux, Simon Goyette   +2 more
doaj   +1 more source

Secondary Interface Echoes Suppression for Immersion Ultrasonic Imaging Based on Phase Circular Statistics Vector

Sensors, 2023
Immersion ultrasonic phased array imaging technology offers great advantages, particularly in coupling and automatic detection of industrial non-destructive testing (NDT).
Ming Chen, Zhenghui Xiong, Yan Jing, Xi He, Qingru Kong, Yao Chen   +5 more
doaj   +1 more source

Total focussing method for volumetric imaging in immersion non destructive evaluation [PDF]

, 2007
This paper describes the use of a 550 (25x22) element 2MHz 2D piezoelectric composite array in immersion mode to image an aluminum test block containing a collection of artificial defects.
Drinkwater, B., Gachagan, A., Harvey, G., Holmes, C., O'Leary, R.L., Tweedie, A., Wilcox, P.   +6 more
core   +1 more source

A Robust Approach to Optimal Matched Filter Design in Ultrasonic Non-Destructive Evaluation (NDE) [PDF]

, 2016
The matched filter was demonstrated to be a powerful yet efficient technique to enhance defect detection and imaging in ultrasonic non-destructive evaluation (NDE) of coarse grain materials, provided that the filter was properly designed and optimized ...
Hayward, Gordon, Li, Minghui
core   +3 more sources