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Topic: Surface Preparation & Treatment

Less than a minute read

How Many Measurements Are Enough to Make Quality Decisions?

A surface that has been properly prepared for coating, painting, or adhesive bonding will have a certain average contact angle that is determined primarily by the chemical composition of the surface. Because of slight variation in the surface composition combined with the variation inherent in any...

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2 minute read

Rapid Development of Surface Treatment Processes for Bonding Dissimilar Materials

A recent concept in automotive light-weighting is that of the ‘joining of dissimilar materials.’ The purpose is to allow tailoring the materials in a structure so as to ensure that each part of the structure has the optimum mechanical properties and minimum weight. An example would be the bonding...

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1 minute read

Correlating Water Contact Angle With Water Break Measurements as an Indicator of Surface Energy

The water break test is a common pass/fail method used to evaluate surfaces for the presence of hydrophobic contaminants, which can be detrimental to the adhesion performance of paint or an adhesive. It is a qualitative means of evaluating surface energy, which is directly related to surface...

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1 minute read

Water Contact Angle Correlation to Crosshatch Adhesion Tape Test in Accordance with ASTM D3359-09

Manufacturers are familiar with adhesion challenges when attempting to bond, paint, etch, or coat a substrate. Poorly prepared surfaces can undoubtedly produce problematic adhesion issues.

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1 minute read

Control of Cleaning Processes to Maximize Sealant Performance

Cleanliness in automotive powertrain manufacture is critical for several reasons. Particulates generated in the various casting and machining processes must be effectively removed to prevent both the premature wear of sliding and rotating parts as well as the catastrophic failure of components such...

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1 minute read

Effect of Grit-Blasting on the Surface Energy of Graphite/Epoxy Composites

Composites consisting of polymer matrices reinforced with graphite fibers are attractive materials for structural applications in the aerospace industry because they are light in weight and have a high strength-to-weight ratio.

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1 minute read

Progress in the Reliability of Bonded Composite Structures

This paper reviews research progress in the detection of contamination on surfaces for bonded composites.

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1 minute read

Qualification of Surface Processes for Bonded Aircraft Repair

This paper demonstrates how contact angle is an extremely sensitive and rapid method to check for surface cleanliness and consistency for aircraft repair.

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1 minute read

A Comparison of Dyne Inks with the Surface Analyst

 

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