Quantitative Detection of Peel Ply Derived Contaminants
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Wettability Measurements

Dillingham, Giles; Oakley, Brietta; Voast, Peter J. Van; Shelley, Paul H.; Blakley, R. L.; Smith, C. Brent

doi:10.1163/156856111x618416

Cited by 18 publications

(6 citation statements)

References 1 publication

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“…The proper surface treatment before bonding is a necessary process which aims to induce a rougher and more wettable surface [52,53] while improving the fracture toughness and active sites [30] which lead to a satisfactory adhesive bond [54].…”

Section: Plasma Treatmentmentioning

confidence: 99%

“…Nowadays, an alternate technique is used to measure the contact angle, which is called the ballistic deposition method [52]. This method uses a jeweled nozzle to create the drop of liquid directly on the surface of the material.…”

Section: Ballistic Depositionmentioning

confidence: 99%

“…The micro-droplets vibrate the large droplet at an increasing rate allowing the large droplet to spread to its equilibrium size, a 1.8 µL drop. Much of the time dust particles and surface flaws serve as an impediment for the droplet forming to equilibrium size [52]. Dillingham et al [52] stated that this measurement method can result in a more comprehensive characterization of the wettability concerning surfaces which exhibit physical or chemical heterogeneity.…”

Section: Ballistic Depositionmentioning

confidence: 99%

“…Both the volume and the diameter of the drop are used to calculate the approximate contact angle by averaging established geometric standards for similarly sized droplets[88]. The contact angle, which is calculated this way, is more inclusive and provides a more accurate representation of the surface energy in the area surrounding the drop[52].…”

mentioning

confidence: 99%

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Plasma Surface Functionalization of AFP Manufactured Composites for Improved Adhesive Bond Performance

Sarikaya

Tahiyat²,

Harik³

et al. 2019

SAMPE 2019 - Charlotte, NC

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I would like to express my deepest appreciation for his aspiring guidance, invaluable friendly contribution during the research to my advisor, Dr. Ramy Harik, who supported me throughout my master degree. Also, I would like to thank my committee member, Dr. Tanvir Farouk, for his constructive suggestions and comments for the research. Furthermore, I would like to thank USC 2C26 student team at McNair Center

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Section: Plasma Treatmentmentioning

confidence: 99%

Section: Ballistic Depositionmentioning

confidence: 99%

Section: Ballistic Depositionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Plasma Surface Functionalization of AFP Manufactured Composites for Improved Adhesive Bond Performance

Sarikaya

Tahiyat²,

Harik³

et al. 2019

SAMPE 2019 - Charlotte, NC

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“…Hence, after removal of the peel ply, residues of the release agent often remain on the surface [2,3], whereby the concentration can fluctuate due to the production process. This transfer of a contamination can have consequences for the quality of the adhesive bond [4][5][6] and might require additional surface treatment [7]. Holtmannspoetter et al [8] showed in an investigation with six different peel plies that creating a reproducible, highly activated surface by peel ply removal only could not achieved.…”

mentioning

confidence: 99%

Investigation of fluorine-based release agents for structural adhesive bonding of carbon fibre reinforced plastics

Thull

Zimmer²,

Hofmann³

et al. 2019

Appl Adhes Sci

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IntroductionAdhesive joining is increasingly used in many industries because of the advantages it provides compared to conventional structural joining methods (e.g. riveting). This applies in particular to fibre-reinforced composites, as a rivet hole interrupts the fibres and thus weakens the mechanical properties of the laminate. In aerostructures, adhesive bonding is applied in metal-to-metal joints, composite-to-composite joints and composite-to-metal joints both for assembling parts and for patch-repairing.The quality of a bonded joint depends on the adhesive, the manufacturing process, the environmental and loading conditions, as well as from the surface of the substrates to be joined. The surfaces of CFRP components to be joined by adhesive bonding are often textured surfaces resulting from the used peel plies during production or mechanical pre-treatment such a sanding or milling. AbstractPeel plies can be used during the manufacture of fibre-reinforced plastics for two reasons: to protect the surface during transport and storing the parts as well as during subsequent work steps, such as adhesive bonding, the removal of the peel ply can result in bondable surface with required surface characteristics. However, the use of peel plies is not straightforward. It can be difficult to remove peel plies and a surface produced by a peel ply is altered in terms of roughness and elemental composition. In the present work, the influence of fluorine-based release agents on adhesive joining of carbon fibre reinforced composites is investigated. Within the scope of the screening, 14 fluorine-based release agents-ETFE release films, PTFE coated glass fabrics as well as fabrics made of PTFE fibres-were investigated. Preliminary studies (Meer, in: Deutscher Luft-und Raumfahrtkongress 2014, Augsburg, 2015 have shown that ETFE films have advantages in terms of adhesion. The study covers a number of aspects: the determination of the tear strength of the release agent by peel test; the determination of the element composition (XPS) and surface characteristics (SEM) before and after atmospheric pressure plasma pre-treatment, characterization the topology and the characterization of the adhesive strength by centrifugal adhesion test. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Nondestructive Inspection

Crane

Dillingham

2015

Mechanical Engineers' Handbook

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This chapter deals with the nondestructive inspection (NDI) of materials, components, and structures. Inspection of complex materials and structures is frequently carried out by comparing the expected inspection data with a standard and noting any significant deviations. This means a well‐defined standard must be available for calibration of the inspection instrumentation. Furthermore, standards also must contain implanted flaws that mimic those that naturally occur in the material or structure to be inspected. Without a well‐defined standard to calibrate the inspection process, the analysis of NDI results can be significantly in error. This chapter covers some important and some less well‐known NDI tests. Thermal nondestructive inspection methods involve the detection of infrared energy emitted from the surface of a test object. This technique is used to detect the flow of thermal energy either into or out of a specimen and the effect of anomalies on the surface temperature distribution.

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Quantitative Detection of Peel Ply Derived Contaminants via Wettability Measurements

Cited by 18 publications

References 1 publication

Plasma Surface Functionalization of AFP Manufactured Composites for Improved Adhesive Bond Performance

Plasma Surface Functionalization of AFP Manufactured Composites for Improved Adhesive Bond Performance

Investigation of fluorine-based release agents for structural adhesive bonding of carbon fibre reinforced plastics

Nondestructive Inspection

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