Testing and modelling of DIARC plasma coated elastic-plastic steel wedge specimens

Jarkko Aakkula; Jarno Jokinen; Olli Saarela; Sanna Tervakangas

doi:10.1016/j.ijadhadh.2016.03.024

Testing and modelling of DIARC plasma coated elastic-plastic steel wedge specimens

Jarkko Aakkula^*, Jarno Jokinen, Olli Saarela, Sanna Tervakangas

^*Corresponding author for this work

Department of Energy and Mechanical Engineering

DIARC-Technology Oy

Research output: Contribution to journal › Article › Scientific › peer-review

10 Citations (Scopus)

Abstract

The stability and durability of DIARC vacuum plasma surface treatment was tested for structural bonding with elastic-plastic steel wedge test specimens. In the treatment nanostructured DIARC Bindo coating is deposited on the substrates in a vacuum chamber. The DIARC-treated surface is ready for bonding and does not require any additional treatments, chemicals or primers containing hazardous CrVI chromium. The tests were performed at hot and wet exposure. Virtual Crack Closure Technique (VCCT) was successfully used in the design of test specimens and in the analyses of the results. Five-year-old DIARC coating performed equally with the freshly-bonded DIARC specimens. The results were also comparable with the best results achieved with existing grit-blast silane and grit-blast Sol-Gel primer methods with aluminium and titanium.

Original language	English
Pages (from-to)	219-228
Number of pages	10
Journal	International Journal of Adhesion and Adhesives
Volume	68
DOIs	https://doi.org/10.1016/j.ijadhadh.2016.03.024
Publication status	Published - 1 Jul 2016
MoE publication type	A1 Journal article-refereed

Keywords

DIARC plasma coating
Elastic-plastic analysis
Surface preparation for metal bonding
Virtual crack closure technique
Wedge testing

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10.1016/j.ijadhadh.2016.03.024

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title = "Testing and modelling of DIARC plasma coated elastic-plastic steel wedge specimens",

abstract = "The stability and durability of DIARC vacuum plasma surface treatment was tested for structural bonding with elastic-plastic steel wedge test specimens. In the treatment nanostructured DIARC Bindo coating is deposited on the substrates in a vacuum chamber. The DIARC-treated surface is ready for bonding and does not require any additional treatments, chemicals or primers containing hazardous CrVI chromium. The tests were performed at hot and wet exposure. Virtual Crack Closure Technique (VCCT) was successfully used in the design of test specimens and in the analyses of the results. Five-year-old DIARC coating performed equally with the freshly-bonded DIARC specimens. The results were also comparable with the best results achieved with existing grit-blast silane and grit-blast Sol-Gel primer methods with aluminium and titanium.",

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AU - Aakkula, Jarkko

AU - Jokinen, Jarno

AU - Saarela, Olli

AU - Tervakangas, Sanna

PY - 2016/7/1

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N2 - The stability and durability of DIARC vacuum plasma surface treatment was tested for structural bonding with elastic-plastic steel wedge test specimens. In the treatment nanostructured DIARC Bindo coating is deposited on the substrates in a vacuum chamber. The DIARC-treated surface is ready for bonding and does not require any additional treatments, chemicals or primers containing hazardous CrVI chromium. The tests were performed at hot and wet exposure. Virtual Crack Closure Technique (VCCT) was successfully used in the design of test specimens and in the analyses of the results. Five-year-old DIARC coating performed equally with the freshly-bonded DIARC specimens. The results were also comparable with the best results achieved with existing grit-blast silane and grit-blast Sol-Gel primer methods with aluminium and titanium.

AB - The stability and durability of DIARC vacuum plasma surface treatment was tested for structural bonding with elastic-plastic steel wedge test specimens. In the treatment nanostructured DIARC Bindo coating is deposited on the substrates in a vacuum chamber. The DIARC-treated surface is ready for bonding and does not require any additional treatments, chemicals or primers containing hazardous CrVI chromium. The tests were performed at hot and wet exposure. Virtual Crack Closure Technique (VCCT) was successfully used in the design of test specimens and in the analyses of the results. Five-year-old DIARC coating performed equally with the freshly-bonded DIARC specimens. The results were also comparable with the best results achieved with existing grit-blast silane and grit-blast Sol-Gel primer methods with aluminium and titanium.

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KW - Elastic-plastic analysis

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Testing and modelling of DIARC plasma coated elastic-plastic steel wedge specimens

Abstract

Keywords

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