The Library
Improved detection of surface defects at sample edges using high-frequency eddy current amplitude and phase measurements
Tools
Tools
Tools
To, Amanda, Li, Zhichao and Dixon, Steve M. (2022) Improved detection of surface defects at sample edges using high-frequency eddy current amplitude and phase measurements. Nondestructive Testing and Evaluation, 37 (6). pp. 795-819. doi:10.1080/10589759.2022.2063858 ISSN 1058-9759.
|
PDF
WRAP-Improved-detection-surface-defects-sample-edges-high-frequency-ampitude-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (8Mb) | Preview |
Official URL: https://doi.org/10.1080/10589759.2022.2063858
Abstract
The detection of surface cracks at or close to sample edges is a challenging problem because the interaction of the eddy current with the sample edge can make it difficult to distinguish changes in the eddy current signal due to a defect. Samples with poor electrical conductivity such as titanium alloys used extensively in aerospace applications can be more difficult to inspect due to the low amplitude eddy currents induced in them and increased electromagnetic skin depths due to lower electrical conductivity. As fatigue surface cracks or manufacturing surface defects can often occur close to edges, the challenges of detecting small defects close to sample edges is an important research area to address. High-frequency eddy currents of over 10 MHz are used in a transmit-receive configuration using two solenoid type coils adjacent to each other. While conventional eddy current sensors are commonly designed for operating at frequencies into the low MHz region, the supporting electronics here will be positioned immediately behind the coils to improve electrical stability and reduce induced noise. The magnitude and phase of the voltage on transmit and receiver coils are measured, and finite element modelling is used to validate the experimental measurements and gain insight into the system behaviour. Small defects of down to 1 mm are easily detected, on the edge and at the corner of a titanium alloy sample with excellent signal-to-noise.
| Item Type: | Journal Article | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||
| SWORD Depositor: | Library Publications Router | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Eddy current testing, Eddy currents (Electric), Metals -- Cracking, Metals -- Fatigue | ||||||||||||
| Journal or Publication Title: | Nondestructive Testing and Evaluation | ||||||||||||
| Publisher: | Taylor & Francis Ltd. | ||||||||||||
| ISSN: | 1058-9759 | ||||||||||||
| Official Date: | 21 April 2022 | ||||||||||||
| Dates: |
|
||||||||||||
| Volume: | 37 | ||||||||||||
| Number: | 6 | ||||||||||||
| Page Range: | pp. 795-819 | ||||||||||||
| DOI: | 10.1080/10589759.2022.2063858 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
| Date of first compliant deposit: | 19 May 2022 | ||||||||||||
| Date of first compliant Open Access: | 19 May 2022 | ||||||||||||
| RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
