Relevant bibliographies by topics / Laser processing technology

Academic literature on the topic 'Laser processing technology'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Laser processing technology"

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DAIDO, Hiroyuki. "Laser Processing Technology (1)." Journal of the Institute of Electrical Engineers of Japan 136, no. 7 (2016): 422–25. http://dx.doi.org/10.1541/ieejjournal.136.422.

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MIKAME, Kazuhisa, and Hiroyuki NIINO. "Laser Processing Technology (2)." Journal of the Institute of Electrical Engineers of Japan 136, no. 7 (2016): 426–29. http://dx.doi.org/10.1541/ieejjournal.136.426.

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OGAWA, Keiji, Heisaburo NAKAGAWA, and Satoshi WATANABE. "E25 Run-out Correction Technology Using Laser On-the-Machine Tool(Laser processing)." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2009.5 (2009): 603–8. http://dx.doi.org/10.1299/jsmelem.2009.5.603.

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TSUBOI, Akihiko. "Laser Processing Technology of Medical Devices." Review of Laser Engineering 28, no. 7 (2000): 413–15. http://dx.doi.org/10.2184/lsj.28.413.

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UEDA, Takashi. "Leading Edge Technology in Laser Processing." Journal of the Society of Mechanical Engineers 110, no. 1068 (2007): 843. http://dx.doi.org/10.1299/jsmemag.110.1068_843.

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Moon, Young-Hoon, and Jeong-Hwan Jang. "Laser Processing Technology using Metal Powders." Korean Journal of Metals and Materials 50, no. 3 (March 5, 2012): 191–200. http://dx.doi.org/10.3365/kjmm.2012.50.3.191.

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Shao, Kun, Qunlin Zhou, Qingshan Chen, Yi Liu, Chenfang Wang, and Xiang Li. "Research Progress of Water–Laser Compound Machining Technology." Coatings 12, no. 12 (December 4, 2022): 1887. http://dx.doi.org/10.3390/coatings12121887.

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As an emerging industry, laser processing technology has developed rapidly and has gradually become a key technology in transforming traditional manufacturing. It has been widely used in various fields such as industrial production, communication technology, information processing, health care, military, and scientific research. The application and development of laser processing technology is restricted by thermal damage and the processing residues existing in traditional laser processing. However, water laser compound machining can better solve the above-mentioned problems. In water laser compound machining , heat and byproducts can be absorbed and taken away by water to improve processing quality. This paper expounds and analyzes the principles and research of three popular water laser compound machining methods (water-guided laser processing, underwater laser processing and water-jet-assisted laser processing). Furthermore, this paper analyzes the technical difficulties in water laser compound machining and looks forward to the future development trends of this technology.
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Li, Xing Cheng, Yong Kang Zhang, and Ju Fang Chen. "Research Advance in Laser Shock Processing Surface Modification Technology on Metal Alloys." Applied Mechanics and Materials 43 (December 2010): 488–91. http://dx.doi.org/10.4028/www.scientific.net/amm.43.488.

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Laser shock processing is an innovative surface treatment technique to strengthen metals. This process induces a compressive residual stress field which increases fatigue crack initiation life and stress corrosion cracking (SCC) resistance and reduces fatigue crack growth rate. The current status of research and development on laser shock processing of metals, using Q-switched high power lasers is reviewed. Then several key issues are addressed, including the development of the laser peening equipment and the opaque overlay selection and so on. Results to date indicate that laser peening has great potential as a means of improving the mechanical performance of components.
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Wang, Wei, Yong Xian Liu, Fei Xing, and Hua Long Xie. "Laser Remanufacturing Technology and its Applications." Advanced Materials Research 139-141 (October 2010): 1424–27. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.1424.

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At present there are a lot of waste of energy in the mechanical processing, which causes increasingly serious pollution of environment. Resource conservation and environmental protection are achieved through the application of green manufacturing technology in mechanical processing. Remanufacturing project, which is a green project according with national sustainable development, is a method to resolve the waste of resources. Laser remanufacturing is a new concept of advanced repair technology that integrates advanced processing technology of laser cladding, laser cladding materials technology and many other technologies. Laser remanufacturing technology is based on laser cladding which is a new surface modification technology. This article describes the technical characteristics and principles of laser cladding. And this paper introduces laser remanufacturing technology by the examples of rotors, gears, shafts and other large wearing parts. the laser remanufacturing technology with the fast development, high efficiency and precision, will not only have a broad market demand, but also have significant economic and social benefits.
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Xiao, Yong Shan, Zhen Yu Zhao, and Yong Quan Zhou. "Research on 3D Laser Texturing Technology of Mold." Applied Mechanics and Materials 510 (February 2014): 3–7. http://dx.doi.org/10.4028/www.scientific.net/amm.510.3.

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In the processing of the mold texture, the traditional chemical etching exits the shortcomings of the pollution and the long processing cycle. This article will introduce 3D laser processing technology to the mold industry, based on the laser etching principle on the metal surface, etch processing can be made in the mold surface. Through theoretical derivation from the 3D laser scanning optical system, the 3D laser scanning hardware system is structured to apply in the mold cavity texturing, the control algorithm has been studied, and finally in the developed laser-etch machine the texturing experimental is performed on the injection molds.
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Dissertations / Theses on the topic "Laser processing technology"

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Cheng, Ho-yiu, and 鄭浩堯. "Laser source, image processing and fast imaging technology for opticalcoherence tomography." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B44519011.

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Campi, Roberta. "High performance materials and processing technology for uncooled 1.3 μm laser diodes." Doctoral thesis, KTH, Halvledarmaterial, HMA, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-529.

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This thesis investigates different material systems and processing technology for high temperature compatible laser diodes used in volume applications within the 1.3-μm telecom wavelength window. Laser diodes built from such materials are much desired in order to eleminate the need for active temperature control needed in current systems, which significantly increases both complexity, size and cost. The structures were grown by Metal-Organic Chemical Vapor Deposition (MOCVD) and the evaluation of materials was performed using different characterization methods such as High-Resolution X-Ray Diffraction (HR-XRD), Photoluminescence (PL), Time-Resolved Photoluminescence (TR-PL). Fabrication and evaluation of Fabry-Perot lasers with different geometries was used to check the material quality and temperature performance. A novel in-situ etching technique was developed for the use i future more advanced, buried hetrostructure lasers. The first studied materials system was AlGaInAsP/InGaAsP/InP. To handle a 5-element material with the precision required, modelling of the materials and heterostructure properties was performed. The addition of Al to the InGaAsP barrier allows better electron confinement with little change in valence band properties. The optimum aluminium content was found to be about 12%. Although the effect of Al could be identified, it was not sufficient with T0 of only 90 K only up to 60 °C. A second materials system InGaP/InAsP/ InP initially looked quite promising from a materials and quantum well design point of view but encountered severe problems with the device integration and further work was discontinued. The main effort was therefore was devoted to a third materials system: AlGaInAs/AlGaInAs/InP. This material system is not unknown but has hitherto not found a widespread application for fibre optic applications. In this work, the MOCVD growth of 1.3 μ;m quantum well laser structures was optimized and ridge waveguide laser devices with excellent temperature performance was fabricated (T0 = 97 K at 85 °C). A ridge waveguide laser was identified as suitable structure since it requires only a single epitaxial growth, thus avoiding the main problem of oxidation of Al based buried structures. The dynamic performance was excellent up to 110 °C and the device fabrication is highly reliable (lifetime >7000 h). This high yield uncooled ridge Fabry-Perot laser process has now been transferred to production and is applied in short length 10 Gb/s multimode links. In order to further improve the usefulness of the Al-containing materials in even higher performance devices needed in future applications developments towards fully buried heterostructure device geometry were also pursued. To overcome difficulty of oxidation of Al containing layers at the mesa walls an in-situ etching technique was implemented. Different chemistry approaches were investigated and the first results of lasers devices were reported.
QC 20100930
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Campi, Roberta. "High performance materials and processing technology for uncooled 1.3 um laser diodes /." Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-529.

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Yu, Xinren. "Pavement Surface Distress Detection and Evaluation Using Image Processing Technology." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1302032254.

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Matthews, Janette. "Textiles in three dimensions : an investigation into processes employing laser technology to form design-led three-dimensional textiles." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/9058.

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This research details an investigation into processes employing laser technology to create design-led three-dimensional textiles. An analysis of historical and contemporary methods for making three-dimensional textiles categorises these as processes that construct a three-dimensional textile, processes that apply or remove material from an existing textile to generate three-dimensionality or processes that form an existing textile into a three-dimensional shape. Techniques used in these processes are a combination of joining, cutting, forming or embellishment. Laser processing is embedded in textile manufacturing for cutting and marking. This research develops three novel processes: laser-assisted template pleating which offers full design freedom and may be applied to both textile and non-textile materials. The language of origami is used to describe designs and inspire new design. laser pre-processing of cashmere cloth which facilitates surface patterning through laser interventions in the manufacturing cycle. laser sintering on textile substrates which applies additive manufacturing techniques to textiles for the generation of three-dimensional surface patterning and structures. A method is developed for determining optimum parameters for laser processing materials. It may be used by designers for parameter selection for processing new materials or parameter modification when working across systems.
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Bhatt, Mittal Gopalbhai. "Detecting glaucoma in biomedical data using image processing /." Link to online version, 2005. https://ritdml.rit.edu/dspace/handle/1850/939.

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Olsson, Rickard. "Signal processing and high speed imaging as monitoring tools for pulsed laser welding." Licentiate thesis, Luleå tekniska universitet, Produkt- och produktionsutveckling, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26555.

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In Laser Materials Processing there has always been a need for suitable methods to supervise and monitor the processes on line, to ensure correct production quality or to trigger alarms when failures are detected. Numerous investigations have been made in this field, including experimental and theoretical work. It is common practice in this field to monitor surface temperature, plasma radiation and back-reflected laser light, coaxially with the laser beam. Traditionally, the monitoring systems involved carry out no statistical analysis of the signals received - they merely involve thresholds. This thesis looks at the feedback collected during laser welding using such a co-axial setup from a Digital Signal Processing point of view and also uses high speed video photography to correlate signal perturbations with process anomalies.Modern Digital Signal Processing techniques such as Kalman filtering, Principal Component Analysis and Cluster Analysis have been applied to the measurement data and have generated new ways to describe the weld behaviour using parameters such as reflected pulse shape. The limitations of commercially available welding supervision systems have been studied and design suggestions for the next generation of on line weld monitoring equipment have been formulated.
Godkänd; 2009; 20091103 (ricols); LICENTIATSEMINARIUM Ämnesområde: Produktionsutveckling/Manufacturing Systems Engineering Examinator: Professor Alexander Kaplan, Luleå tekniska universitet Tid: Onsdag den 16 december 2009 kl 13.00 Plats: E 232, Luleå tekniska universitet
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Akiwowo, Kerri. "Digital laser-dyeing : coloration and patterning techniques for polyester textiles." Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/19180.

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This research explored a Digital Laser Dye (DLD) patterning process as an alternative coloration method within a textile design practice context. An interdisciplinary framework employed to carry out the study involved Optical Engineering, Dyeing Chemistry, Textile Design and Industry Interaction through collaboration with the Society of Dyers and Colourists. In doing so, combined creative, scientific and technical methods facilitated design innovation. Standardized polyester (PET) knitted jersey and plain, woven fabrics were modified with CO2 laser technology in order to engineer dye onto the fabric with high-resolution graphics. The work considered the aesthetic possibilities, production opportunities and environmental potential of the process compared to traditional and existing surface design techniques. Laser-dyed patterns were generated by a digital dyeing technique involving CAD, laser technology and dye practices to enable textile coloration and patterning. An understanding of energy density was used to define the tone of a dye in terms of colour depth in relation to the textile. In doing so, a system for calibrating levels of colour against laser energy in order to build a tonal image was found. Central to the investigation was the consideration of the laser beam spot as a dots-per-inch tool, drawing on the principles used in digital printing processes. It was therefore possible to utilise the beam as an image making instrument for modifying textile fibres with controlled laser energy. Qualitative approaches employed enabled data gathering to incorporate verbal and written dialogue based on first-hand interactions. Documented notes encompassed individual thought and expression which facilitated the ability to reflect when engaged in practical activity. As such, tacit knowledge and designerly intuition, which is implicit by nature, informed extended design experiments and the thematic documentation of samples towards a textile design collection. Quantitative measurement and analysis of the outcomes alongside creative exploration aided both a tacit understanding of, and ability to control processing parameters. This enabled repeatability of results parallel to design development and has established the potential to commercially apply the technique. Sportswear and intimate apparel prototypes produced in the study suggest suitable markets for processing polyester garments in this way.
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Lindell, David. "Process Mapping for Laser Metal Deposition of Wire using Thermal Simulations : A prediction of material transfer stability." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-85474.

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Additive manufacturing (AM) is a quickly rising method of manufacturing due to its ability to increase design freedom. This allows the manufacturing of components not possible by traditional subtractive manufacturing. AM can greatly reduce lead time and material waste, therefore decreasing the cost and environmental impact. The adoption of AM in the aerospace industry requires strict control and predictability of the material deposition to ensure safe flights.  The method of AM for this thesis is Laser Metal Deposition with wire (LMD-w). Using wire as a feedstock introduces a potential problem, the material transfer from the wire to the substrate. This requires all process parameters to be in balance to produce a stable deposition. The first sign of unbalanced process parameters are the material transfer stabilities; stubbing and dripping. Stubbing occurs when the energy to melt the wire is too low and the wire melts slower than required. Dripping occurs when too much energy is applied and the wire melts earlier than required.  These two reduce the predictability and stability that is required for robust manufacturing.  Therefore, the use of thermal simulations to predict the material transfer stability for LMD-w using Waspaloy as the deposition material has been studied.  It has been shown that it is possible to predict the material transfer stability using thermal simulations and criterions based on preexisting experimental data. The criterion for stubbing checks if the completed simulation result produces a wire that ends below the melt pool. For dripping two criterions shows good results, the dilution ratio is a good predictor if the tool elevation remains constant. If there is a change in tool elevation the dimensionless slenderness number is a better predictor.  Using these predictive criterions it is possible to qualitatively map the process window and better understand the influence of tool elevation and the cross-section of the deposited material.
Additiv tillverkning (AT) är en kraftigt växande tillverkningsmetod på grund av sin flexibilitet kring design och möjligheten att skapa komponenter som inte är tillverkningsbara med traditionell avverkande bearbetning.  AT kan kraftigt minska tid- och materialåtgång och på så sett minskas kostnader och miljöpåverkan. Införandet av AT i flyg- och rymdindustrin kräver strikt kontroll och förutsägbarhet av processen för att försäkra sig om säkra flygningar.  Lasermetalldeponering av tråd är den AT metod som hanteras i denna uppsats. Användandet av tråd som tillsatsmaterial skapar ett potentiellt problem, materialöverföringen från tråden till substratet. Detta kräver att alla processparametrar är i balans för att få en jämn materialöverföring. Är processen inte balanserad syns detta genom materialöverföringsstabiliteterna stubbning och droppning. Stubbning uppkommer då energin som tillförs på tråden är för låg och droppning uppkommer då energin som tillförs är för hög jämfört med vad som krävs för en stabil process. Dessa två fenomen minskar möjligheterna för en kontrollerbar och stabil tillverkning.  På grund av detta har användandet utav termiska simuleringar för att prediktera materialöverföringsstabiliteten för lasermetalldeponering av tråd med Waspaloy som deponeringsmaterial undersökts. Det har visat sig vara möjligt att prediktera materialöverföringsstabiliteten med användning av termiska simuleringar och kriterier baserat på tidigare experimentell data. Kriteriet för stubbning kontrolleras om en slutförd simulering resulterar i en tråd som når under smältan.  För droppning finns två fungerande kriterier, förhållandet mellan svetshöjd och penetrationsdjup om verktygshöjden är konstant, sker förändringar i verktygshöjden är det dimensionslös ”slenderness” talet ett bättre kriterium.  Genom att använda dessa kriterier är det möjligt att kvalitativt kartlägga processfönstret och skapa en bättre förståelse för förhållandet mellan verktygshöjden och den deponerade tvärsnittsarean.
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Hostinský, Michal. "Nekonvenční technologie výroby řetězů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232064.

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Unconventional technologies and their continual development brings along new possibilities in the manufacturing process. The submitted project is focused on solving problems in the procession of sheet metals in the manufacture of special parts of roller and conveyor chains. In the assessment of the technology of components, laser cutting was evaluated as the most optimal technology. With this goal, there was a public tender in terms of the purchase of a new machine designed for the manufacturing operations of the company of RETEZY Vamberk. This company ranks among the most major manufacturers of conveyor, roller and special chains in Europe.
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Books on the topic "Laser processing technology"

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Bäuerle, Dieter. Laser Processing and Chemistry. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2011.

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1940-, Bäuerle D., ed. Laser processing and chemistry. 2nd ed. Berlin: Springer, 1996.

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Principles of laser materials processing. Hoboken, N.J: Wiley, 2009.

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Yilbas, Bekir Sami. Laser Surface Processing and Model Studies. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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Conference, on Laser Materials Processing in the Nordic Countries (3rd 1991 Lappeenranta Finland). Proceedings of the 3rd Conference on Laser Materials Processing in the Nordic Countries: August 21-22, 1991, Lappeenranta, Finland. Lappeenranta: Lappeenranta University of Technology, 1991.

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1916-, Prokhorov A. M., Catherinot Alain, Pustovoy Vladimir, Institut obshcheĭ fiziki (Rossiĭskai͡a︡ akademii͡a︡ nauk), and Russian Basic Research Foundation, eds. ALT '97, International Conference on Laser Surface Processing: 8-12 September 1997, Limoges, France. Bellingham, Wash: SPIE, 1998.

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The theory of laser materials processing: Heat and mass transfer in modern technology. Dordrecht : The Netherlands: Springer Science, 2009.

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Symposium E on Surface Processing and Laser Assisted Chemistry (1990 Strasbourg, France). Surface processing and laser assisted chemistry: Proceedings of Symposium E on Surface Processing and Laser Assisted Chemistry of the 1990 E-MRS spring conference, Strasbourg, France, 29 May-1 June 1990. Amsterdam: North-Holland, 1990.

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Symposium H on Laser Processing of Surfaces and Thin Films (1996 Strasbourg, France). Laser processing of surfaces and thin films: Proceedings of Symposium H on Laser Processing of Surfaces and Thin Films of the 1996 E-MRS Spring Conference, Strasbourg, France, June 4-7, 1996. Amsterdam: Elsevier, 1997.

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International Symposium on Semiconductor Processing and Characterization with Lasers (1st 1994 Stuttgart, Germany). Semiconductor Processing and Characterization with Lasers, Applications in photovoltaics: Proceedings of the first International Symposium, Stuttgart, Germany, April 18-20, 1994. Edited by Brieger M. Aedermannsdorf, Switzerland: Trans Tech Publications, 1995.

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Book chapters on the topic "Laser processing technology"

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Zhang, Wande, Peter H. Chung, Aping Zhang, and Shaochen Chen. "Laser Processing of Natural Biomaterials." In Laser Technology in Biomimetics, 237–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-41341-4_10.

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Bäuerle, D. "Chemical Processing with Lasers: Recent Developments." In Laser Technology in Chemistry, 261–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-52476-9_6.

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Jones, Marshall G. "Fiber Technology in Processing with Laser Radiation." In Laser/Optoelektronik in der Technik / Laser/Optoelectronics in Engineering, 423. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-48372-1_88.

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Singh, Subhash C., and Chunlei Guo. "Laser Material Processing: Section Introduction." In Handbook of Laser Technology and Applications, 1–2. 2nd ed. 2nd edition. | Boca Raton: CRC Press, 2021– |: CRC Press, 2021. http://dx.doi.org/10.1201/9781315310855-1.

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Moharana, Himanshu S., Smruti Ranjan Pradhan, and Abhijeet Gupta. "Ultrafast Laser for Processing of Materials." In Advances in Manufacturing Technology, 29–34. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003203681-5.

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Ono, Yuzo, and Nobuo Nishida. "Optoelectronic Information Processing: Laser Bar Code and Laser Printer Systems." In Optoelectronic Technology and Lightwave Communications Systems, 653–73. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-011-7035-2_22.

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Ren, Xudong. "Laser Shock Processing at Elevated Temperature." In Laser Shocking Nano-Crystallization and High-Temperature Modification Technology, 33–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-46444-1_3.

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Unal, Feristah, Arzu Yavas, and Ozan Avinc. "Sustainability in Textile Design with Laser Technology." In Sustainable Textiles: Production, Processing, Manufacturing & Chemistry, 263–87. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37929-2_11.

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Hu, Yihua. "Detection Data Processing and Image Generation." In Theory and Technology of Laser Imaging Based Target Detection, 161–90. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3497-8_5.

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Ferraro, F., G. Di Vita, M. Marchetti, A. Cutolo, and L. Zeni. "Laser Processing of Thermoplastic Matrix Filament Wound Composites." In Developments in the Science and Technology of Composite Materials, 89–94. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0787-4_9.

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Conference papers on the topic "Laser processing technology"

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Cole, H. S., Y. S. Liu, R. Guida, and J. Rose. "Laser Processing For Interconnect Technology." In 1988 Los Angeles Symposium--O-E/LASE '88, edited by Carl A. Kukkonen. SPIE, 1988. http://dx.doi.org/10.1117/12.943946.

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Otomanski, Przemyslaw. "Signal processing models of the laser diode." In Laser Technology V, edited by Wieslaw L. Wolinski and Michal Malinowski. SPIE, 1997. http://dx.doi.org/10.1117/12.280515.

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Carlson, David E. "Laser processing of solar cells." In SPIE Solar Energy + Technology, edited by Edward W. Reutzel. SPIE, 2012. http://dx.doi.org/10.1117/12.932276.

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Nomaru, Keiji, Hiroshi Morikazu, and Kunimitsu Takahashi. "Ultrafast laser processing and metrology." In CLEO: Applications and Technology. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/cleo_at.2014.atu2l.1.

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Veiko, Vadim P., Alexey N. Kalachev, Lev N. Kaporsky, Sergey A. Volkov, and Nikolay B. Voznesensky. "Laser technology of SNOM-tips fabrication: process diagnostics, processing, and testing." In Laser Processing of Advanced Materials and Laser Microtechnologies, edited by Friedrich H. Dausinger, Vitali I. Konov, Vladimir Y. Baranov, and Vladislav Y. Panchenko. SPIE, 2003. http://dx.doi.org/10.1117/12.515561.

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Pantsar, Henrikki, Reino Ruusu, Petri Laakso, and Anssi Jansson. "Advances in 3D laser processing in mold technology." In ICALEO® 2006: 25th International Congress on Laser Materials Processing and Laser Microfabrication. Laser Institute of America, 2006. http://dx.doi.org/10.2351/1.5060811.

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REIF, RAFAEL. "Perspectives on laser processing technology for microelectronics." In Conference on Lasers and Electro-Optics. Washington, D.C.: OSA, 1985. http://dx.doi.org/10.1364/cleo.1985.fe2.

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Guozhong Yao, Jianqun Wang, Zhengshan Li, and Xuejun Ran. "Modulated laser signal front-end processing technology." In 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering (CMCE 2010). IEEE, 2010. http://dx.doi.org/10.1109/cmce.2010.5610274.

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Stadler, David, and Hsiang-Yu Lo. "3D laser processing with tunable lens technology." In ICALEO® 2016: 35th International Congress on Applications of Lasers & Electro-Optics. Laser Institute of America, 2016. http://dx.doi.org/10.2351/1.5118546.

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Jones, Marshall. "Industrial Applications of Laser Materials Processing." In CLEO: Applications and Technology. Washington, D.C.: OSA, 2011. http://dx.doi.org/10.1364/cleo_at.2011.amb1.

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Reports on the topic "Laser processing technology"

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Yan, Yujie, and Jerome F. Hajjar. Automated Damage Assessment and Structural Modeling of Bridges with Visual Sensing Technology. Northeastern University, May 2021. http://dx.doi.org/10.17760/d20410114.

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Recent advances in visual sensing technology have gained much attention in the field of bridge inspection and management. Coupled with advanced robotic systems, state-of-the-art visual sensors can be used to obtain accurate documentation of bridges without the need for any special equipment or traffic closure. The captured visual sensor data can be post-processed to gather meaningful information for the bridge structures and hence to support bridge inspection and management. However, state-of-the-practice data postprocessing approaches require substantial manual operations, which can be time-consuming and expensive. The main objective of this study is to develop methods and algorithms to automate the post-processing of the visual sensor data towards the extraction of three main categories of information: 1) object information such as object identity, shapes, and spatial relationships - a novel heuristic-based method is proposed to automate the detection and recognition of main structural elements of steel girder bridges in both terrestrial and unmanned aerial vehicle (UAV)-based laser scanning data. Domain knowledge on the geometric and topological constraints of the structural elements is modeled and utilized as heuristics to guide the search as well as to reject erroneous detection results. 2) structural damage information, such as damage locations and quantities - to support the assessment of damage associated with small deformations, an advanced crack assessment method is proposed to enable automated detection and quantification of concrete cracks in critical structural elements based on UAV-based visual sensor data. In terms of damage associated with large deformations, based on the surface normal-based method proposed in Guldur et al. (2014), a new algorithm is developed to enhance the robustness of damage assessment for structural elements with curved surfaces. 3) three-dimensional volumetric models - the object information extracted from the laser scanning data is exploited to create a complete geometric representation for each structural element. In addition, mesh generation algorithms are developed to automatically convert the geometric representations into conformal all-hexahedron finite element meshes, which can be finally assembled to create a finite element model of the entire bridge. To validate the effectiveness of the developed methods and algorithms, several field data collections have been conducted to collect both the visual sensor data and the physical measurements from experimental specimens and in-service bridges. The data were collected using both terrestrial laser scanners combined with images, and laser scanners and cameras mounted to unmanned aerial vehicles.
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Tao, Yang, Victor Alchanatis, and Yud-Ren Chen. X-ray and stereo imaging method for sensitive detection of bone fragments and hazardous materials in de-boned poultry fillets. United States Department of Agriculture, January 2006. http://dx.doi.org/10.32747/2006.7695872.bard.

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As Americans become increasingly health conscious, they have increased their consumptionof boneless white and skinless poultry meat. To the poultry industry, accurate detection of bonefragments and other hazards in de-boned poultry meat is important to ensure food quality andsafety for consumers. X-ray imaging is widely used for internal material inspection. However,traditional x-ray technology has limited success with high false-detection errors mainly becauseof its inability to consistently recognize bone fragments in meat of uneven thickness. Today’srapid grow-out practices yield chicken bones that are less calcified. Bone fragments under x-rayshave low contrast from meat. In addition, the x-ray energy reaching the image detector varieswith the uneven meat thickness. Differences in x-ray absorption due to the unevenness inevitablyproduce false patterns in x-ray images and make it hard to distinguish between hazardousinclusions and normal meat patterns even by human visual inspection from the images.Consequently, the false patterns become camouflage under x-ray absorptions of variant meatthickness in physics, which remains a major limitation to detecting hazardous materials byprocessing x-ray images alone.Under the support of BARD, USDA, and US Poultry industries, we have aimed todeveloping a new technology that uses combined x-ray and laser imaging to detect bonefragments in de-boned poultry. The technique employs the synergism of sensors of differentprinciples and has overcome the deficiency of x-rays in physics of letting x-rays work alone inbone fragment detection. X-rays in conjunction of laser-based imaging was used to eliminatefalse patterns and provide higher sensitivity and accuracy to detect hazardous objects in the meatfor poultry processing lines.Through intensive research, we have met all the objectives we proposed during the researchperiod. Comprehensive experiments have proved the concept and demonstrated that the methodhas been capable of detecting frequent hard-to-detect bone fragments including fan bones andfractured rib and pulley bone pieces (but not cartilage yet) regardless of their locations anduneven meat thickness without being affected by skin, fat, and blood clots or blood vines.
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