Effects of scanning paths on laser welding

Abstract Laser biological tissue welding is a potential alternative technology from traditional suturing skills. In this study, we explored the influence laws of laser scanning path on in-vitro skin tissue performance and designed four different scanning paths, including heartbeat, circle, peano20-2, and toothed paths. Then the influence laws of laser scanning paths on temperature distributions, mechanical properties and microstructure characteristics were discussed based on the simple factor design of experiments. The samples under the heartbeat path reached the highest peak temperature and the highest tensile strength, but possessed sparse microstructure. The peak temperature of the samples under the circle path was close to that of the heartbeat samples but the tensile strength was only 8.667 N/cm2. The temperature of the toothed samples was much lower and obviously fluctuated. The toothed samples had very bad mechanical properties, but had uniform microstructure. The Peano20-2 samples achieved the best comprehensive microstructure characteristics and tensile strength was up to 19.939 N/cm2 and suffered no color deepening or scars at the macroscale.

[1]  C. Arnold,et al.  Ultrafast z-scanning for high-efficiency laser micro-machining , 2018, Light: Science & Applications.

[2]  Han Wen-zheng.  Optimization of Proceeding Parameters in Laser Cladding Fe-based Alloy , 2006 .

[3]  Murat Gulsoy,et al.  The effect of irradiance level in 980-nm diode laser skin welding. , 2010, Photomedicine and laser surgery.

[4]  Jyoti Mazumder,et al.  Texture control during laser deposition of nickel-based superalloy , 2012 .

[5]  Qi Fangjuan.  Numerical simulation of effects of scanning path on electron beam selective melting process of Ti-6Al-4V , 2009 .

[6]  Mohammed Al Kindi,et al.  A comprehensive study on microstructure and tensile behaviour of a selectively laser melted stainless steel , 2018, Scientific Reports.

[7]  C. H. Hill,et al.  Multiple Roles for Elastic Fibers in the Skin , 2005, The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society.

[8]  Fei Luo,et al.  Dynamic Processing of Nociception in Cortical Network in Conscious Rats: A Laser-evoked Field Potential Study , 2008, Cellular and Molecular Neurobiology.

[9]  J. Walsh,et al.  Laser skin welding: In vivo tensile strength and wound healing results , 2000, Lasers in surgery and medicine.

[10]  R. Diegelmann,et al.  Wound healing: an overview of acute, fibrotic and delayed healing. , 2004, Frontiers in bioscience : a journal and virtual library.

[11]  John Dowden,et al.  The theory of laser materials processing : heat and mass transfer in modern technology , 2009 .

[12]  A. Ghahary,et al.  Evidence of a Role for Fibrocyte and Keratinocyte-like Cells in the Formation of Hypertrophic Scars , 2013, Journal of burn care & research : official publication of the American Burn Association.

[13]  J. Mazumder,et al.  Laser aided direct metal deposition of Inconel 625 superalloy: Microstructural evolution and thermal stability , 2009 .

[14]  Roberto Pini,et al.  Laser welding of biological tissue: experimental studies in ophthalmology , 2006, SPIE Photonics Europe.

[15]  H L Wei,et al.  Evolution of solidification texture during additive manufacturing , 2015, Scientific Reports.

[16]  Mengnan Xu,et al.  A lysosomal K+ channel regulates large particle phagocytosis by facilitating lysosome Ca2+ release , 2020, Scientific Reports.

[17]  J. Kruth,et al.  Residual stresses in selective laser sintering and selective laser melting , 2006 .

[18]  Halil Berberoglu,et al.  Simulation of laser propagation through a three-layer human skin model in the spectral range from 1000 to 1900 nm , 2014, Journal of biomedical optics.

[19]  The effect of skin surface topography and skin colouration cues on perception of male facial age, health and attractiveness , 2018, International journal of cosmetic science.

[20]  M. Dąbrowska,et al.  Evaluation of sex‐related changes in skin topography and structure using innovative skin testing equipment , 2018, Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging.

[21]  葛亚楠 Ge Yanan,et al.  Effect of Scanning Strategy on Forming Precision of Titanium Alloy by Selective Laser Melting , 2018 .

[22]  Guidong Xu,et al.  Effects of scanning path and overlapping rate on residual stress of 316L stainless steel blade subjected to massive laser shock peening treatment with square spots , 2019, Applied Surface Science.

[23]  L. Shaw,et al.  Thermal and mechanical finite element modeling of laser forming from metal and ceramic powders , 2004 .

[24]  Amelia Carolina Sparavigna,et al.  An image‐processing analysis of skin textures , 2008, Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging.

[25]  R. Lee,et al.  Thermal injury kinetics in electrical trauma. , 1992, Journal of biomechanical engineering.

[26]  Changsen Sun,et al.  A two-layer model of laser interaction with skin: A photothermal effect analysis , 2011 .

[27]  M W Berns,et al.  Laser microsurgery in cell and developmental biology. , 1981, Science.

[28]  Keigo Kono,et al.  Quantitative distinction of the morphological characteristic of erythrocyte precursor cells with texture analysis using gray level co‐occurrence matrix , 2018, Journal of clinical laboratory analysis.

[29]  M. Nourbakhsh,et al.  An in-vitro investigation of skin tissue soldering using gold nanoshells and diode laser , 2010, Lasers in Medical Science.

[30]  Haishan Zeng,et al.  Monte Carlo simulation of near infrared autofluorescence measurements of in vivo skin. , 2011, Journal of photochemistry and photobiology. B, Biology.

[31]  M. Gedvilas,et al.  Advanced laser scanning for highly-efficient ablation and ultrafast surface structuring: experiment and model , 2018, Scientific Reports.