Interfacial delamination in polymer coated metal sheet
Similar to nanoindentaion, nanoscratching was valuable for investigating the failure mechanisms of thin film structures [ 6768 ]. The occurrence of delamination was coincident with the discontinuities in the P—h curves obtained from indentation. Also, surface coatings such as paints and films can delaminate from the coated substrate. A variety of materials including laminate composites  and concrete can fail by delamination. Chen Y, McIntyre PC Lead zirconate titanate ferroelectric thin film capacitors: effects of surface treatments on ferroelectric properties.
Interfacial delamination in polymer coated metal sheet: a numerical- experimental study. Citation for published version (APA): van den Bosch.
A submitted manuscript is the author's version of the article upon submission and before peer-review.
Identification and characterization of delamination in polymer coated metal sheet
There can be important differences between the submitted. Identification and characterization of delamination in polymer coated metal sheet On surface damage of polymer coated sheet metals during forming.
Video: Interfacial delamination in polymer coated metal sheet Cutting Sheet Metal~Irwin Tools Metal Cutting Circular Saw Blade Review
For instance, the underlying mechanisms that induce interfacial failure are not well understood. In this case, with the indenter penetrated deeper, the film deflected into the plastically deformed impression on the substrate. The occurrence of structure failure was reflected by the discontinuities appeared on both measured scratching depth and force.
If the surface is finished and densified by troweling while the underlying concrete is bleeding water and air, the dense top layer may separate from the water and air pushing upwards. Liu X, Zhang B, Deng Z Grinding of nanostructured ceramic coatings: surface observations and material removal mechanisms.
Failure may occur on the thin film systems during either loading or unloading [ 41 ]. Namespaces Article Talk.
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|Bridge decks in cold climate countries which use de-icing salts and chemicals are commonly subject to delamination and as such are typically scheduled for annual inspection by chain-dragging as well as subsequent patch repairs of the surface.
Huang H, Liu Y Experimental investigations of machining characteristics and removal mechanisms of advanced ceramics in high speed deep grinding.
Favache A, Sacre CH, Coulombier M et al Fracture mechanics based analysis of the scratch resistance of thin brittle coatings on a soft interlayer. The load-displacement P—h curve obtained from nanoindentation can quickly provide insights into the mechanical behavior. Before reaching the critical load L c1pile-ups were found along the edges of the scratching groove and became clearer with the increased load.
quantifies the interfacial integrity and is used to assess the influence of the tooling radii, products are made from polymer coated sheet metal, mak. Identification and characterization of delamination in polymer coated metal sheet. ARTICLE IN PRESS Journal of the Mechanics and Physics of Solids 56 ().
Visual inspection is useful for detecting delaminations at the surface and edges of materials.
The mechanisms of the failure are very complex and have been extensively studied [ 46495051 ]. The application of such models would not only give the interpretation of crack initiation, but provide detailed insight into the evolution of stress during interfacial debonding. The stages were found to be well matched with the contact modes obtained by Holmberg et al.
Obviously, the improvements were achieved through decreasing the aggression level of machining, but the trade-off was the sacrifice of productivity. It is documented that the use of cohesive zone models can be an effective method to simulate material fracture [ 9495 ].
Early heterogeneous swelling at the metal-coating interface chloride ions on heterogeneous swelling at the metal-polymer interface using frequency- dependent .
sheet as studied by scanning electrochemical microscopy. Polymer coated metals are increasingly used by the packaging and It is inserted at the interface between the metal and the two polymer layers and the metal and the polymer layers, interaction at the interfaces and possible delamination. In the future, research will be extended to the thixoforging of steel. The material parameters Interfacial delamination in polymer coated metal sheet.
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Although being widely used in the understanding of deformation and removal mechanisms involved in abrasive machining, nanoscratching has its limitations in simulating the practical machining process.
Thin films usually refer to a layer of material with thicknesses ranging from several nanometers to several micrometers [ 2 ]. Oliver WC, Pharr GM Improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. Owing to its shallow indentation depth, which is as small as a few nanometers, this technique is also recognized as a nondestructive property testing method [ 37 ].
Ramsey P, Chandler H, Page T Bending tests to estimate the through-thickness strength and interfacial shear strength in coated systems.
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|Fracture mechanics. The structure of the multilayer being investigated is shown in Fig.
Those thin film materials or structures provide distinct advantages over conventional bulk counterparts in terms of cost efficiency, long lifespan, environmental friendliness and enhanced thickness-dependent properties [ 1112 ]. It is also noted that the scratched surfaces appears slightly better than the lapped ones, which is likely because the lapping is a process with uneven protrusion height of diamond grits when compared to the controlled conditions in nanoscratching.
If the surface is finished and densified by troweling while the underlying concrete is bleeding water and air, the dense top layer may separate from the water and air pushing upwards. In particular, the recent progress in the abrasive machining of a thin film multilayer structure was summarized. A tangential or sliding mode crack, as shown in Fig.