Influence of surface treatment with infrared nanosecond laser on adhesion performance of adhesion-bonded carbon fiber/epoxy composite

Li, Xiao; Ehrhardt, Martin; Lorenz, Pierre; Han, Bing; Lai, Shengying; Zimmer, Klaus; Xu, Lizhang; Nan, Pengyu; Ni, Xiaowu

doi:10.1080/01694243.2019.1710990

Cited by 14 publications

(11 citation statements)

References 34 publications

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“…One way is, chemical processes such as photografting and surface functionalization have been used to treat the surface, 4,9 however its harm to the environment is high due to the waste generated by these methods, and these processes are not suitable for automation. Another way is, mechanical treatments such as peel-ply and grit-blasting methods, 2,5 however these methods have disadvantages such as surface contamination, impracticality and time loss. Instead, recent studies presented the laser surface processing as a good option due to its advantages for industrial applications.…”

Section: Introductionmentioning

confidence: 99%

“…1,16 As a result, it is possible to obtain a direct attachment to the reinforcement elements and at the same time increase the wettability and remove the contamination on the surface. 2,17…”

Section: Introductionmentioning

confidence: 99%

“…7,16,20 Therefore, there is a big need to determine the optimal laser processing parameters for IR laser to remove the polymer matrix from composite surface with low fiber damage and small HAZ extension. 2,21…”

Section: Introductionmentioning

confidence: 99%

“…The carbon fiber reinforced polymer (CFRP) composites are widely used in the aviation industry due to their properties such as lightweight, corrosion performance, durability, impact resistance, high mechanical strength and modulus. [1][2][3] Bolted and riveted connections are frequently used to join CFRP parts, however such mechanical connections cause weight increase, localized stresses and damage to the CFRP. Instead, adhesive bonded connections have been developed as a good alternative for joining CFRP parts as they provide light weight, uniform stress distribution and structural integrity of CFRP.…”

Section: Introductionmentioning

confidence: 99%

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Effects of nanosecond laser ablation parameters on surface modification of carbon fiber reinforced polymer composites

İplikçi

Barışık

Türkdoğan

et al. 2023

Journal of Composite Materials

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Removal of contaminants and top polymer layer from the surface of carbon-fiber-reinforced polymer (CFRP) composites is critical for high-quality adhesive-joining with direct bonding to the reinforcing fiber constituents. Surface treatment with a laser beam provides selective removal of the polymer matrix without damaging the fibers and increasing the wettability. However, inhomogeneous thermal properties of CFRP make control of laser ablation difficult as the laser energy absorbed by the carbon fibers is converted into heat and transmitted through the fiber structures during the laser operation. In this study, the effect of scanning speed and laser power on nanosecond laser surface treatment was characterized by scanning electron microscope images and wetting angle measurements. Low scanning speeds allowed laser energy to be conducted as thermal energy through the fibers, which resulted in less epoxy matrix removal and substantial thermal damage. Low laser power partially degraded the epoxy the surface while the high power damaged the carbon fibers. For the studied CFRP specimens consisting of unidirectional [45/0/−45/90]2s stacking of carbon/epoxy prepregs (HexPly®-M91), 100 mJ/mm2 generated by 10 m/s scanning speed and 30 W power appeared as optimum processing parameters for the complete removal of epoxy matrix from the top surface with mostly undamaged carbon fibers and super hydrophilic surface condition.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of nanosecond laser ablation parameters on surface modification of carbon fiber reinforced polymer composites

İplikçi

Barışık

Türkdoğan

et al. 2023

Journal of Composite Materials

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“…Li et al applied different single pulse energies on woven CFRP. They found out that a single pulse energy of 40 mJ is necessary to ablate the matrix and receive the maximum shear strength [14] . Leone et al [15] revealed that a rising emitted energy, pulse energy and pulse power have an positive influence on the matrix removal.…”

Section: Introduction and State Of The Artmentioning

confidence: 99%

Comprehensive study on the influence of different pretreatment methods and structural adhesives on the shear strength of hybrid CFRP/aluminum joints

Schanz

Meinhard

Dostal

et al. 2021

The Journal of Adhesion

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The aim of this study was to investigate the influence of laser treatments with varying energy density and wavelength on the surface structure, shear strength and fracture behavior of hybrid compounds of thermoset carbon fiber reinforced polymer (CFRP) and aluminum (Al) bonded with three different structural adhesives. The CFRP was pretreated by laser with near-infrared (NIR) and ultraviolet (UV) wavelengths and applying different energy densities. Aluminum surfaces were structured with NIR. Reference CFRP/Al-specimens were prepared by acetone cleaning, low pressure oxygen/argon plasma or sand blasting. The surfaces were investigated microscopically before bonding and after mechanical testing. In addition, the surfaces were examined with white light interferometer and sessile droplet test methods. The bonded compounds were characterized in standardized single lap shear tests to reveal the influence of the pretreatment strategies on the joint strength. Suitable process windows for laser pretreatments were identified, including NIR-pretreatment methods that can compete with an UV-laser source. For every adhesive, a suitable pretreatment method was found.

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A comparative study on the adhesive bonding strength of unidirectional, 4-Harness Satin weaved and plain weaved carbon fibre reinforced polymer after KrF excimer laser pre-treatment

Kundu

Mandal

Saha

2022

Applied Surface Science

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Influence of surface treatment with infrared nanosecond laser on adhesion performance of adhesion-bonded carbon fiber/epoxy composite

Cited by 14 publications

References 34 publications

Effects of nanosecond laser ablation parameters on surface modification of carbon fiber reinforced polymer composites

Effects of nanosecond laser ablation parameters on surface modification of carbon fiber reinforced polymer composites

Comprehensive study on the influence of different pretreatment methods and structural adhesives on the shear strength of hybrid CFRP/aluminum joints

A comparative study on the adhesive bonding strength of unidirectional, 4-Harness Satin weaved and plain weaved carbon fibre reinforced polymer after KrF excimer laser pre-treatment

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