A Refined Theory for Characterizing Adhesion of Elastic Coatings on Rigid Substrates Based on Pressurized Blister Test Methods: Closed-Form Solution and Energy Release Rate

Abstract

Adhesion between coatings and substrates is an important parameter determining the integrity and reliability of film/substrate systems. In this paper, a new and more refined theory for characterizing adhesion between elastic coatings and rigid substrates is developed based on a previously proposed pressurized blister method. A compressed air driven by liquid potential energy is applied to the suspended circular coating film through a circular hole in the substrate, forcing the suspended film to bulge, and then to debond slowly from the edge of the hole as the air pressure intensifies, and finally to form a blister with a certain circular delamination area. The problem from the initially flat coating to the stable blistering film under a prescribed pressure is simplified as a problem of axisymmetric deformation of peripherally fixed and transversely uniformly loaded circular membranes. The adhesion strength depends on the delamination area and is quantified in terms of the energy released on per unit delamination area, the so-called energy release rate. In the present work, the problem of axisymmetric deformation is reformulated with out-of-plane and in-plane equilibrium equations and geometric equations, simultaneously improved, and a new closed-form solution is presented, resulting in the new and more refined adhesion characterization theory.

Optimization of Adhesion Strength and Microstructure Properties by Using Response Surface Methodology in Enhancing the Rice Husk Ash-Based Geopolymer Composite Coating

“…Despite the high number of publications on polymer coatings reported in the literature in recent years [ 15 , 16 , 17 , 18 , 19 , 20 ], most studies adopted the one-factor-a-time (OFAT) approach. A more efficient analytical tool, such as RSM (a mathematical model), is a prerequisite in order to predict the optimum composition of a GCC with a high adhesion strength.…”

Advances in Polymer Based Composite Coatings

“…Polymer based composite coatings represent an important class of materials for various applications [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ] due to their capabilities to couple the elastic, optical, or wettability properties of the polymers with the mechanical, physical, and chemical properties of metals, dielectrics, or ceramics. Usually, selective chemical or plasma methods are chosen for synthesis or tailoring of the surface properties of polymer based layers.…”

“…Usually, selective chemical or plasma methods are chosen for synthesis or tailoring of the surface properties of polymer based layers. The authors who submitted their latest results to this Special Issue [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ] evidenced the advantages as well as the drawbacks of the following methods used for different coating synthesis procedures: atom transfer radical polymerization technique [ 1 ], electrospraying [ 2 ], radio frequency magnetron sputtering technique [ 3 , 8 ] chemical vapor deposition [ 4 , 6 ], plasma enhanced chemical vapor deposition [ 4 ], and high-pressure spray gun [ 7 ]. There is also one particular study on the improvement, experimentally and theoretically, of the blister technique used for measuring of the polymers’ adhesion strength [ 5 ].…”

“…Summarizing, this Special Issue contains eight papers dedicated to synthesis and analysis of mechanical, wettability and physicochemical properties of different kind of polymer based composite coatings [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. It also comprise one review paper which provides an overall insight to all the class of polymer coatings with applications in the marine industry [ 9 ].…”

“…Yong-Sheng Lian et al [ 5 ], developed, in their paper, an improved theory for the determination with high accuracy of energy release rate formula (energy released per unit delamination area) and a new experimental set-up for pressurized blister technique of elastic layers deposited on rigid substrates. The delamination area of the coating from substrate by blister test technique has the benefit of an axisymmetric geometry of the cracks caused by the uniformity of the applied pressure.…”