Removal mechanism of surface cleaning on TA15 titanium alloy using nanosecond pulsed laser

Li, Zhichao; Zhang, Donghe; Su, Xuan; Yang, Shirui; Xu, Jie; Ma, Rui; Shan, Debin; Guo, Bin

doi:10.1016/j.optlastec.2021.106998

Cited by 43 publications

(9 citation statements)

References 49 publications

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“…The boiling point of Al 2 O 3 is 2980 °C [ 24 ]. By Equation (4), the minimum power to reach the boiling point of the oxide film is 57.3 W. At 75 W–150 W, the oxide is removed under the action of shock waves [ 25 , 26 , 27 , 28 ] or heat [ 27 , 29 ]. The principle of laser cleaning is shown in Figure 18 .…”

Section: Discussionmentioning

confidence: 99%

Welding Defect and Mechanical Properties of Nanosecond Laser Cleaning 6005A Aluminum Alloy

Zhang

Long

et al. 2022

Materials

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Nanosecond laser cleaning effectively removes oxide film and dirt from the surface of aluminum body parts for rail transit, as well as improving surface properties. The effect of laser cleaning on the quality of weld was studied in detail for different scanning frequencies and cleaning speeds. The effect of post-weld laser cleaning on weld quality was investigated. After laser cleaning at different parameters, the surface oxygen content was decreased and the surface roughness and surface hardness were increased. Variation of surface oxygen content was related to energy density and spot density. The lowest oxygen content was obtained at 150 W, 100 Hz and 0.8 m/min. Laser-generated craters changed surface morphology and improved surface roughness. The mechanical properties of the welded joints were slightly improved, which relates to a decrease in porosity. The minimum porosity of the laser-cleaned weld was 0.021%. This work provides new ideas for the nanosecond laser cleaning of aluminum alloy and its welding properties.

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Section: Discussionmentioning

confidence: 99%

Welding Defect and Mechanical Properties of Nanosecond Laser Cleaning 6005A Aluminum Alloy

Zhang

Long

et al. 2022

Materials

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“… 87 For cleanliness, the current methods mainly include plasma cleaning, acetone cleaning, ultrasonic cleaning and laser removal of the surface oxide layer. 88 Li et al 89 used laser cleaning to remove the oxide layer on the surface of the substrate, and the results showed that the surface cleanliness was the best, when the laser energy density was 3.98 J/cm 2 , and the scanning speed was 5 mm/s. When Munoz et al 90 used the plasma treatment method to clean the surface of the substrate, it was found that the contact angle of water droplets on the surface of the substrate with nitrogen content in the range of 0% to 2% was small.…”

Section: Joint Design Strategy and Failurementioning

confidence: 99%

A review of modification methods, joints and self-healing methods of adhesive for aerospace

Hu,

Shu,

Zheng

et al. 2024

Science Progress

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In recent years, the adhesive technology has been widely used in the production of high-strength joins and precise positioning of various materials, such as metals, glass and composite materials. The adhesive technology has become a promising assembly process in the aerospace field due to its versatility, low creep and high damage tolerance. However, the reliability and predictability of adhesive bonding still require further development due to the complex operating conditions involved. Therefore, this article reviews and discusses the latest advances in aerospace adhesive technology, such as methods for improving bonding performance, bonding techniques (including joints structure and failure modes) and self-healing adhesive layers. Additionally, the current research results are summarised, and possible development trends and research directions in the field of adhesive bonding are prospected.

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“…In comparison, laser cleaning technology is regarded as a greener and more promising alternative, particularly in the context of the global manufacturing industry's transformation. This technology operates by inducing a series of optical, thermal, and mechanical changes in a short period, effectively removing contaminants through their coupled effects [4][5][6][7][8]. Laser cleaning is considered the most promising green cleaning technology of the 21st century, as it enables minimal damage through precise control of laser parameters [9,10].…”

Section: Introductionmentioning

confidence: 99%

Trajectory Planning of Shape-Following Laser Cleaning Robot for the Aircraft Radar Radome Coating

Zeng,

Jiang,

Ding

et al. 2024

Applied Sciences

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At present, aircraft radome coating cleaning mainly relies on manual and chemical methods. In view of this situation, this study presents a trajectory planning method based on a three-dimensional (3D) surface point cloud for a laser-enabled coating cleaning robot. An automated trajectory planning scheme is proposed to utilize 3D laser scanning to acquire point cloud data and avoid the dependence on traditional teaching–playback paradigms. A principal component analysis (PCA) algorithm incorporating additional principal direction determination for point cloud alignment is introduced to facilitate subsequent point cloud segmentation. The algorithm can adjust the coordinate system and align with the desired point cloud segmentation direction efficiently and conveniently. After preprocessing and coordinate system adjustment of the point cloud, a projection-based point cloud segmentation technique is proposed, enabling the slicing division of the point cloud model and extraction of cleaning target positions from each slice. Subsequently, the normal vectors of the cleaning positions are estimated, and trajectory points are biased along these vectors to determine the end effector’s orientation. Finally, B-spline curve fitting and layered smooth connection methods are employed to generate the cleaning path. Experimental results demonstrate that the proposed method offers efficient and precise trajectory planning for the aircraft radar radome coating laser cleaning and avoids the need for a prior teaching process so it could enhance the automation level in coating cleaning tasks.

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Removal mechanism of surface cleaning on TA15 titanium alloy using nanosecond pulsed laser

Cited by 43 publications

References 49 publications

Welding Defect and Mechanical Properties of Nanosecond Laser Cleaning 6005A Aluminum Alloy

Welding Defect and Mechanical Properties of Nanosecond Laser Cleaning 6005A Aluminum Alloy

A review of modification methods, joints and self-healing methods of adhesive for aerospace

Trajectory Planning of Shape-Following Laser Cleaning Robot for the Aircraft Radar Radome Coating

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