Results 161 to 170 of about 3,455 (216)

Development of Assisted Software for TOFD Testing

Applied Mechanics and Materials, 2012
The detection of flaws is essential as the defects of pipes and containers affect the safe operation of many kinds of equipment. During the industrial production process, it is usually use the ray method to detect the flaws which has radiant effect on the testing personnel.
Qing He, Ze Yue Pan, Yu Ning Zhang
openaire   +1 more source

Development of a technique for applying pa and tofd methods for mechanized ultrasonic testing of welded joints of main pipelines using the USD-60FR-16/128 flaw detector

Дефектоскопия, 2023
A technique was developed and tested for selecting beam steering and focusing methods for mechanized ultrasonic testing of circumferential welds of pipelines up to 16 mm thick using phased antenna arrays.
D. A. Ajibaye, M. P. Savichev, V. V. Atroshenko   +2 more
semanticscholar   +1 more source

Laser ultrasonic TOFD method

AIP Conference Proceedings, 2001
We applied laser ultrasound for the time of flight diffraction (TOFD) measurement. To find an effective testing condition of TOFD method, laser ultrasonic transmission around the slit in glass specimens was observed using the photoelastic ultrasonic visualization system. After the observation we constructed the laser TOFD system and applied to the slit
openaire   +1 more source

REFLECTOR TYPE RECOGNITION USING NEURAL NETWORK BASED ON TOFD ECHOES

Дефектоскопия / Russian Journal of Nondestructive Testing
In this paper we propose to automate the classification of reflector types by TOFD-echoes using ResNet-18 convolutional neural network. The main focus is on modeling and classification of reflectors such as cracks, pores, non-welds and void areas ...
E. Bazulin
semanticscholar   +1 more source

Обработка TOFD-эхосигналов с целью достижения сверхразрешения

Дефектоскопия, 2021
The paper proposes to use the method of maximum entropy (ME) and the method for constructing an AR model of the TOFD echo spectrum together with the method of splitting spectra to increase the resolution and, consequently, its information content. Model experiments have shown the effectiveness of the proposed approach.
openaire   +1 more source

Research on TOFD testing technique for nickel-based alloy piping in reactor coolant systems of nuclear power plants

Journal of Physics: Conference Series
As existing nuclear power plants in China gradually transition from the RSEM standards to the ASME standards, additional in-service inspection items have been introduced, including nickel-based alloy tubing and welds in the reactor coolant system.
Jinfeng Wu, Yikai Xu, Tianming Lv, Pengfei Zhang, Lihui Jiang   +4 more
semanticscholar   +1 more source

Design of TOFD receiving filter on DSP builder

2014 IEEE Far East Forum on Nondestructive Evaluation/Testing, 2014
TOFD (Time of Flight Diffraction), one of the most advanced technologies in the field of NDT (Nondestructive Testing), is widely used in science and industry to evaluate the properties of material, component or system without causing damage. Experiments on TOFD show that signal is greatly disturbed by the noise received by the receiving probe. Based on
null Jin Wang, null Hao Liu, null Zhong-chang Chen   +2 more
openaire   +1 more source

Experimental study on TOFD technology in weld nondestructive testing of aluminum pressure equipment

Journal of Physics: Conference Series
At present, there is a lack of practical application cases of TOFD technology for Aluminum Pressure Equipment Welds in China, and there are no relevant national standards and industry standards on the application of TOFD technology in aluminum pressure ...
Fei Qiu, Mao Chen, Guogen Huang
semanticscholar   +1 more source

Zautomatyzowane badania systemami PA+TOFD - wdrażanie i zastosowania

Badania Nieniszczące i Diagnostyka, 2022
Celem referatu jest prezentacja prac wdrożeniowych automatycznych systemów ultradźwiękowych PA+TOFD, dedykowanych do badania doczołowych złączy spawanych o zakresie grubości od 6 do 40 mm na obiektach ze stali węglowych - płaskich oraz na rurociągach w zakresie średnic DN od 500 do 1400 mm. Implementacja kombinowanych technik cyfrowych PA (Phased-Array
openaire   +1 more source

A metrological approach to the time of flight diffraction method (ToFD)

, 2021
Introduction Non-Destructive Testing (NDT) is widely used in industry, especially in the evaluation of mechanical parts and structures for identifying defects, corrosion, flaws or imperfections.
R. Mayworm, A. Alvarenga, R. Costa-Felix
semanticscholar   +1 more source