Analytical Methods to Determine the Stress State in the Substrate–Coating System Under Mechanical Loads

The paper presents the analysis of analytical models to determine the stress state in the substrate–coating system, when a load is applied to the substrate. The results obtained with these models are shown to differ. It is noted that the advantage of the analytical methods as compared to the numeric...

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Bibliographic Details
Published in:Strength of materials 2016-09, Vol.48 (5), p.658-667
Main Author: Dolgov, N. A.
Format: Article
Language:English
Subjects:
Adhesive strength
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Coatings
Comparative analysis
Materials Science
Mathematical analysis
Mathematical models
Methods
Numerical analysis
Protective coatings
Shear stress
Solid Mechanics
Stress concentration
Stress distribution
Stress state
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Summary:The paper presents the analysis of analytical models to determine the stress state in the substrate–coating system, when a load is applied to the substrate. The results obtained with these models are shown to differ. It is noted that the advantage of the analytical methods as compared to the numerical analysis is the possibility to calculate stresses in the singularity region in the vicinity of the free edge of the coating. The character of the shear stress distribution is analyzed using the analytical models. Examples of using different approaches to determine the critical shear stresses that define the adhesive strength of coatings are given. The analysis of literature sources shows that both simple and more sophisticated analytical models are employed in the investigation of the adhesive strength of coatings.
ISSN:0039-2316
1573-9325
DOI:10.1007/s11223-016-9809-5