Non-destructive testing of thermally sprayed coatings
Expertise
TWI's experience in the inspection of thermally sprayed coatings has included the following project work.| Ultrasonic image showing variations in the coating layer of an HVOF sprayed panel. |
 |
- High frequency ultrasonic examination of HVOF coated test pieces to quantify changes in coating quality and to correlate these changes with variations in the spraying process.
- Acoustic-emission testing to define the failure point of different coating systems during 4-point bend testing.
- Phase-modulated thermal imaging of hydroxyapatite coated prosthetics for the detection of coating-to-substrate disbonds.
- Mathematical modelling of the interaction of 'thermal waves' with simulated coating defects, to estimate the capability of thermal inspection techniques for different coating systems.
Resource
- comprehensive range of equipment for ultrasonic, radiographic, electromagnetic, liquid penetrant, magnetic particle & thermographic inspection
- advice on selecting & applying the most appropriate inspection procedure
- independent, third party assessment of inspection data
- training in conventional & advanced NDT techniques
- specialised, on-site inspection services
Copyright © 2000, TWI Ltd
Information and advice from TWI and its partners are provided in good faith and based, where appropriate, on the best engineering knowledge available at the time and incorporated into TWI's website in accordance with TWI's ISO 9001:2000 accredited status. No warranty expressed or implied is given regarding the results or effects of applying information or advice obtained from the website, nor is any responsibility accepted for any consequential loss or damage.
