Laser-assisted cleaning: Dominant role of surface

Abstract

Pulsed laser-assisted removal of particulates from substrates has decided advantages over the conventional methods of cleaning. Experiments conducted with loose contamination on metal and transparent dielectric surfaces proved conclusively the dominant role played by the absorption of the incident radiation by the surface towards the generation of the cleaning force as against the absorption in the particulates alone. Further, the presence of transparent/semi-transparent particulates on a metal surface was found to result in an increased absorption of the incident radiation by the substrate. This effect, identified as field-enhanced surface absorption was found to increase with reduction in the average particulate size.

Laser Cleaning Surface Roughness Estimation Using Enhanced GLCM Feature and IPSO-SVR

“…The dimensions of related features are shown in Table 2. 12 1 When the extracted features are inputted into SVR, they are processed in the form of feature vector, and the "Dimension" represents the scale of the feature vector. For example, if the extracted feature is [0.1, 0.2, 0.3, 0.4], the "Dimension" of feature is 4.…”

“…Laser cleaning technology is a revolution in the cleaning industry [1]. Laser cleaning can make use of the advantages of high energy density, high precision, and efficient conduction of lasers [2,3] to remove the excess attached materials on a metal surface.…”

“…This method has a high degree of computational accuracy through our experiments. The main contributions of this paper are: (1) The new feature extraction and combination method of images after laser cleaning are developed. The combination of the traditional image features, new EGLCM, and emerging convolution neural network abstract feature is designed.…”

“…1 1 + 2 + 3 + 4 represents the features defined in Table13. For example, if 1 represents Tamura coarseness feature, features 1 + 2 + 3 + 4 represent the combination of Tamura coarseness feature, Alexnet abstract depth feature, single BRISQUE feature, and EGLCM feature, calculated with En_sum, Con_sum, Cor_sum, and Ent_sum (offset = 3, 6, and 9).…”

The Influence of Nanosecond Fibre Laser on the Removal of Paint on Metallic Surface

“…Laser cleaning is defined as removing unwanted layers or the extended contamination of the unwanted layers from a solid substrate [15]. It involves cleaning off foreign organic impurities, namely coatings over a solid or metal substrate [16].…”