A Review on In Situ Mechanical Testing of Coatings

Mohamed Amer, Qamar Hayat, Vit Janik, Nigel Jennett, Jon Nottingham, Mingwen Bai

Research output: Contribution to journalReview articlepeer-review

7 Citations (Scopus)
32 Downloads (Pure)


Real-time evaluation of materials’ mechanical response is crucial to further improve the performance of surfaces and coatings because the widely used post-processing evaluation techniques (e.g., fractography analysis) cannot provide deep insight into the deformation and damage mechanisms that occur and changes in coatings’ material corresponding to the dynamic thermomechanical loading conditions. The advanced in situ examination methods offer deep insight into mechanical behavior and material failure with remarkable range and resolution of length scales, microstructure, and loading conditions. This article presents a review on the in situ mechanical testing of coatings under tensile and bending examinations, highlighting the commonly used in situ monitoring techniques in coating testing and challenges related to such techniques.

Original languageEnglish
Article number299
Number of pages34
Issue number3
Early online date23 Feb 2022
Publication statusPublished - 23 Feb 2022

Bibliographical note

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Funding: This research was funded by CN Technical Services Ltd. (CN Tech), UK.


  • surface engineering
  • fracture analysis
  • in situ monitoring techniques
  • mechanical testing
  • electron microscopes


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