Effects of laser ablation coating removal (LACR) on a steel substrate: Part 2: Residual stress and fatigue

Shamsujjoha, M.; Agnew, Sean R.; Brooks, James R.; Tyler, Terry J.; Fitzgerald, James W.

doi:10.1016/j.surfcoat.2015.02.034

Cited by 28 publications

(9 citation statements)

References 17 publications

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“…The roughness values in the substrates after the stripping processes applied in this study have suffered slightly different trends, but not particularly significant [51]. It is observed that the roughness indicators Ra and Rz in the aluminum substrates, after the PTFE pickling, are slightly lower than after the pickling of the FEP.…”

Section: Discussionmentioning

confidence: 90%

Study on the Main Influencing Factors in the Removal Process of Non-Stick Fluoropolymer Coatings Using Nd:YAG Laser

et al. 2019

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The coatings with fluoropolymer resins rich in fluorinated ethylene propylene (FEP) and polytetrafluoroethylene (PTFE) are applied as anti-adherent coatings on aluminum–magnesium substrates for use in food containers. In many cases, due to wear, they must be stripped for the application of a new coating on the same substrate. There are several processes for this: blasting, plasma, pyrolysis, chemical processes, laser, high pressure water, and combinations of these. This work focuses on the characterization of the main factors that condition the FEP coating removal process by a continuous wave (CW) Nd:YAG laser, and on the determination of the efficiency of this type of technology used for this purpose. Stripping surface per unit of time and energy consumption per unit area has been determined among other efficiency indicators. Regarding the characterization of the coating object of study, its thickness, surface roughness, contact angle, microhardness and absorbance-reflectance responses have been determined, and the results have been compared with those obtained in the case of PTFE. In addition, to evaluate the mechanical damage caused in the substrate after coating removal by (CW) Nd:YAG laser, the tensile strength, Vickers hardness, Ra and Rz roughness, and the substrate thickness have been measured and analyzed.

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Section: Discussionmentioning

confidence: 90%

Study on the Main Influencing Factors in the Removal Process of Non-Stick Fluoropolymer Coatings Using Nd:YAG Laser

et al. 2019

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“…This superficial melting does not appear to adversely affect the adhesion properties or fatigue performance [14].…”

Section: Solid-laser Interaction Modelingmentioning

confidence: 92%

“…The three major engineering performance concerns are: i) adhesion of subsequent coatings, due to changes in surface roughness (addressed in the present paper). ii) fatigue performance, due to changes in roughness or residual stress (addressed in Part 2 [14]), and iii) corrosion behavior (recommended for future study).…”

Section: Introductionmentioning

confidence: 99%

Effects of laser ablation coating removal (LACR) on a steel substrate: Part 1: Surface profile, microstructure, hardness, and adhesion

Shamsujjoha

Agnew

Melia

et al. 2015

Surface and Coatings Technology

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“…deterioration and fatigue life extension effects (Bäuerle, 2011;Labuschagne & Pityana, 2005;Shamsujjoha, Agnew, Brooks, Tyler, & Fitz-Gerald, 2015a). A study conducted by Shamsujjoha et al has proven the tensile residual stress and surface roughness of the metal substrate undergoing laser cleaning will induce metal fatigue due to heat dissipation (Shamsujjoha et al, 2015a).…”

Section: Thermal In Metal Substratementioning

confidence: 99%

A review of incorporating Nd:YAG laser cleaning principal in automotive industry

Razab

Noor

Jaafar

et al. 2018

Journal of Radiation Research and Applied Sciences

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Laser cleaning has been identified as an ideal technology to replace conventional chemical techniques in the motorcar coating removal process to maintain the sustainability of our environment. This is due to the unique characteristics of this cleaning technique, such as being versatile, precise, controllable, lack of waste generation, and environmental friendly process. This laser technique can remove the coating layers without using chemical products and prevents the metal substrate surfaces from defect. This paper reviews the potential of incorporating pulsed Nd:YAG laser and its principals in coating removal for automotive industry with respect to these characteristics.

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Effects of laser ablation coating removal (LACR) on a steel substrate: Part 2: Residual stress and fatigue

Cited by 28 publications

References 17 publications

Study on the Main Influencing Factors in the Removal Process of Non-Stick Fluoropolymer Coatings Using Nd:YAG Laser

Study on the Main Influencing Factors in the Removal Process of Non-Stick Fluoropolymer Coatings Using Nd:YAG Laser

Effects of laser ablation coating removal (LACR) on a steel substrate: Part 1: Surface profile, microstructure, hardness, and adhesion

A review of incorporating Nd:YAG laser cleaning principal in automotive industry

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