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24 Results Found

  • Article
  • Open Access
1 Citations
3,273 Views
10 Pages

22 January 2019

The possibility of application of the eddy current tomography setup to measure the small permeability variations caused by magnetoelastic effect was presented. A ferromagnetic steel sample was prepared for applying wall stresses and measured for 30 M...

  • Article
  • Open Access
1 Citations
2,261 Views
17 Pages

24 August 2021

This paper presents a methodology of inverse tomography transformation in eddy current tomography with the use of continuous optimization of reference defect parameters. Ferromagnetic steel samples with rectangular air inclusion defects of known dime...

  • Article
  • Open Access
1 Citations
771 Views
19 Pages

18 August 2025

Rolling contact fatigue (RCF)-induced cracks in steel rails exhibit a fish-scale-shaped cluster distribution, and generally form in a layered, overlapping manner. Eddy-current-pulsed thermography (ECPT) has been applied in RCF detection by taking adv...

  • Article
  • Open Access
2 Citations
1,862 Views
17 Pages

19 August 2024

Railways play a pivotal role in national economic development, freight transportation, national defense, and regional connectivity. The detection of rolling contact fatigue (RCF) defects in rail tracks is essential for railway safety and maintenance....

  • Article
  • Open Access
13 Citations
2,613 Views
13 Pages

Locating and Imaging Fiber Breaks in CFRP Using Guided Wave Tomography and Eddy Current Testing

  • Dario J. Pasadas,
  • Mohsen Barzegar,
  • Artur L. Ribeiro and
  • Helena G. Ramos

28 September 2022

In this paper, guided Lamb wave tomography and eddy current testing (ECT) techniques were combined to locate and evaluate fiber breaks in carbon-fiber-reinforced plastic (CFRP) structures. Guided wave testing (GWT) and computed tomography (CT) imagin...

  • Article
  • Open Access
9 Citations
2,610 Views
17 Pages

10 December 2020

This paper is devoted to an analytical approach to the magnetoacoustic tomography with magnetic induction (MAT-MI) problem for three-layer low-conductivity objects. For each layer, we determined closed-form analytical expressions for the eddy current...

  • Article
  • Open Access
2 Citations
2,193 Views
20 Pages

Organic Patinas on Small Historical Bronzes: From Mock-Ups to Actual Artworks

  • Monica Galeotti,
  • Simone Porcinai,
  • Andrea Cagnini,
  • Maria Baruffetti,
  • Caterina Biondi,
  • Alice Dal Fovo and
  • Raffaella Fontana

6 February 2024

This paper deals with the study of organic coatings (patinas) on historical bronzes, specifically those applied on small-size statues in Renaissance workshops. These coatings, often transparent and translucent, contain a mixture of organic and inorga...

  • Review
  • Open Access
104 Citations
15,139 Views
29 Pages

A Review of Sensing Technologies for Non-Destructive Evaluation of Structural Composite Materials

  • Ranjeetkumar Gupta,
  • Daniel Mitchell,
  • Jamie Blanche,
  • Sam Harper,
  • Wenshuo Tang,
  • Ketan Pancholi,
  • Lee Baines,
  • David G. Bucknall and
  • David Flynn

6 December 2021

The growing demand and diversity in the application of industrial composites and the current inability of present non-destructive evaluation (NDE) methods to perform detailed inspection of these composites has motivated this comprehensive review of s...

  • Article
  • Open Access
2 Citations
3,678 Views
11 Pages

13 January 2021

To ensure the integrity and safety of steam generator tubes in nuclear power plants, eddy-current testing is periodically employed. Because steam generators are equipped with thousands of thin-walled tubes, the eddy current is tested using a bobbin p...

  • Article
  • Open Access
11 Citations
1,090 Views
11 Pages

1 December 2015

Tissue conductivity is a biophysical marker of tissue structure and physiology. Present methods of measuring tissue conductivity are limited. Electrical impedance tomography and magnetic resonance electrical impedance tomography rely on passing an ex...

  • Article
  • Open Access
8 Citations
2,942 Views
20 Pages

17 January 2023

Magnetic induction tomography (MIT) is based on remotely excited eddy currents inside a measurement object. The conductivity distribution shapes the eddies, and their secondary fields are detected and used to reconstruct the conductivities. While the...

  • Article
  • Open Access
5 Citations
2,823 Views
12 Pages

Non-Invasive Evaluation of Polymeric Protective Coatings for Metal Surfaces of Cultural Heritage Objects: Comparison of Optical and Electromagnetic Methods

  • Diego Quintero Balbas,
  • Alice Dal Fovo,
  • Daniela Porcu,
  • Antonina Chaban,
  • Simone Porcinai,
  • Raffaella Fontana and
  • Jana Striova

27 July 2022

The application of protective coatings is an effective preventive strategy to avoid metal corrosion. Constant monitoring of the coating’s quality is fundamental for the successful preservation of the metallic objects by reducing their interacti...

  • Article
  • Open Access
14 Citations
5,205 Views
16 Pages

25 May 2021

Magnetic induction tomography (MIT) is largely focused on applications in biomedical and industrial process engineering. MIT has a great potential for imaging metallic samples; however, there are fewer developments directed toward the testing and mon...

  • Article
  • Open Access
11 Citations
2,800 Views
12 Pages

13 May 2023

Non-destructive detection of the in-plane waviness of carbon fiber-reinforced plastic (CFRP) laminates is of interest in a wide variety of industries, as wrinkles and other fiber alignment defects significantly impact the mechanical performance of th...

  • Article
  • Open Access
10 Citations
3,945 Views
21 Pages

9 June 2020

Magnetic induction tomography (MIT) is a powerful imaging system for monitoring the state of metallic materials. Tomographic methods enable automatic inspection of metallic samples making use of multi-sensor measurements and data processing of eddy c...

  • Proceeding Paper
  • Open Access
1,153 Views
5 Pages

14 November 2023

Inductive thermography is a non-destructive testing method, whereby the workpiece to be inspected is slightly heated by a short inductive heating pulse. An infrared camera records the surface temperature during and after the heating pulse. As defects...

  • Article
  • Open Access
3 Citations
2,071 Views
21 Pages

24 January 2024

In rock mass engineering, stress balance changes often cause the relative slip of fractures along a wall surface, impacting the seepage behavior of fluid in the fractures. Using computer tomography (CT) scanning, spatial models of fractures with disl...

  • Article
  • Open Access
13 Citations
3,989 Views
32 Pages

28 February 2020

Magnetic induction tomography (MIT) is a contactless technique that is used to image the distribution of passive electromagnetic properties inside a voluminous body. However, the central area sensitivity (CAS) of this method is critically weak and bl...

  • Article
  • Open Access
23 Citations
7,339 Views
12 Pages

23 February 2016

This research aims to deepen the understanding of the interaction mechanisms between microwave and matter in a metal-ceramic system based on in situ synchrotron radiation computed tomography. A special internal “core-shell” microstructure was discove...

  • Article
  • Open Access
2 Citations
1,045 Views
12 Pages

Noninvasive Electric Current Induction for Low-Frequency Tissue Conductivity Reconstruction: Is It Feasible with a TMS-MRI Setup?

  • Stefano Mandija,
  • Petar I. Petrov,
  • Sebastian F. W. Neggers,
  • Peter R. Luijten and
  • Cornelis A. T. van Den Berg

1 September 2016

Noninvasive quantification of subject-specific low-frequency brain tissue conductivity (σLF) will be valuable in different fields, for example, neuroscience. Magnetic resonance (MR)-electrical impedance tomography allows measurements of σLF. However,...

  • Article
  • Open Access
12 Citations
6,417 Views
9 Pages

4 January 2016

In this study, synchrotron radiation computed tomography was applied to investigate the mechanisms of titanium powder microwave sintering in situ. On the basis of reconstructed images, we observed that the sintering described in this study differs fr...

  • Article
  • Open Access
76 Citations
9,478 Views
19 Pages

20 February 2014

This paper proposes a new omni-directional electromagnetic acoustic transducer (EMAT) for the ultrasonic Lamb wave (ULW) tomography imaging (TI) of defects in metallic plates. The proposed EMAT is composed of a permanent magnet and a coil with a cont...

  • Review
  • Open Access
10 Citations
4,121 Views
39 Pages

Recent Trends in Non-Destructive Testing Approaches for Composite Materials: A Review of Successful Implementations

  • Jan Lean Tai,
  • Mohamed Thariq Hameed Sultan,
  • Andrzej Łukaszewicz,
  • Jerzy Józwik,
  • Zbigniew Oksiuta and
  • Farah Syazwani Shahar

2 July 2025

Non-destructive testing (NDT) methods are critical for evaluating the structural integrity of and detecting defects in composite materials across industries such as aerospace and renewable energy. This review examines the recent trends and successful...

  • Article
  • Open Access
3 Citations
2,050 Views
14 Pages

Complementary Methods for the Assessment of the Porosity of Laser Additive-Manufactured Titanium Alloy

  • Silviu Mihai Petrișor,
  • Adriana Savin,
  • Mariana Domnica Stanciu,
  • Zdenek Prevorovsky,
  • Marian Soare,
  • František Nový and
  • Rozina Steigmann

24 September 2023

The method of making parts through additive manufacturing (AM) is becoming more and more widespread due to the possibility of the direct manufacturing of components with complex geometries. However, the technology’s capacity is limited by the a...