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In particular, online monitoring for direct detection of defective products is especially important. To develop a method for detecting pores during the process, this paper investigates the influence of pores on the temperature field during laser beam welding of AlMg3. Numerical simulations were carried out to theoretically investigate the influence of the pores in the weld seam on the temperature field and experiments were carried out to validate the simulations. The simulations show a clear influence of the pores on the temperature field, making the measurement of the temperature field suitable as a detection method. The detection of the pores from the measured thermal radiation turned out to be difficult because of the huge influence of the seam surface geometry on the emissivity. Especially for an automatic data evaluation, further research on sophisticated evaluation algorithms is required.", "eventtitle" : "ICALEO", "venue" : "Orlando, Florida, United States", "language" : "englisch", "eventdate" : "16 Oktober - 20 Oktober 2022", "bibtexKey": "traunecker2022detection" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2a94544f51fc55a45b4db93dc2a197894/ifsw", "tags" : [ "YbYAG","myown","Diagnostics","Welding","ProcessMonitoring","Simulation","Laser","X-ray" ], "intraHash" : "a94544f51fc55a45b4db93dc2a197894", "interHash" : "cf86e0b2550bc9741cd3bc8585521492", "label" : "Detection of pores during laser beam welding of AlMg3 using the temperature field", "user" : "ifsw", "description" : "", "date" : "2024-05-08 14:25:02", "changeDate" : "2024-05-08 14:25:02", "count" : 4, "pub-type": "presentation", "year": "2022", "url": "", "author": [ "David Traunecker","Michael Haas","Michael Jarwitz","Thomas Graf" ], "authors": [ {"first" : "David", "last" : "Traunecker"}, {"first" : "Michael", "last" : "Haas"}, {"first" : "Michael", "last" : "Jarwitz"}, {"first" : "Thomas", "last" : "Graf"} ], "abstract": "To achieve sustainable development in today's production facilities, quality assurance of manufacturing processes, such as laser welding is very important. In particular, online monitoring for direct detection of defective products is especially important. To develop a method for detecting pores during the process, this paper investigates the influence of pores on the temperature field during laser beam welding of AlMg3. Numerical simulations were carried out to theoretically investigate the influence of the pores in the weld seam on the temperature field and experiments were carried out to validate the simulations. The simulations show a clear influence of the pores on the temperature field, making the measurement of the temperature field suitable as a detection method. The detection of the pores from the measured thermal radiation turned out to be difficult because of the huge influence of the seam surface geometry on the emissivity. 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In particular, online monitoring for direct\r\ndetection of defective products is especially important.\r\nTo develop a method for detecting pores during the\r\nprocess, this paper investigates the influence of pores on\r\nthe temperature field during laser beam welding of\r\nAlMg3.\r\nNumerical simulations were carried out to theoretically\r\ninvestigate the influence of the pores in the weld seam\r\non the temperature field and experiments were carried\r\nout to validate the simulations.\r\nThe simulations show a clear influence of the pores on\r\nthe temperature field, making the measurement of the\r\ntemperature field suitable as a detection method. The\r\ndetection of the pores from the measured thermal\r\nradiation turned out to be difficult because of the huge\r\ninfluence of the seam surface geometry on the\r\nemissivity. Especially for an automatic data evaluation,\r\nfurther research on sophisticated evaluation algorithms\r\nis required.", "eventtitle" : "ICALEO", "venue" : "Orlando, Florida, United States", "language" : "englisch", "eventdate" : "16 Oktober - 20 Oktober 2022", "bibtexKey": "Traunecker.2022.Detection" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2f4c7e2cac1740398d3e04fcc893ba0d2/dtraunecker", "tags" : [ "Aluminium","Diagnostics","Laser","ProcessMonitoring","Simulation","Welding","X-ray","YbYAG","myown" ], "intraHash" : "f4c7e2cac1740398d3e04fcc893ba0d2", "interHash" : "cf86e0b2550bc9741cd3bc8585521492", "label" : "Detection of pores during laser beam welding of AlMg3 using the temperature field", "user" : "dtraunecker", "description" : "", "date" : "2023-01-09 13:01:36", "changeDate" : "2023-09-28 14:31:00", "count" : 4, "pub-type": "inproceedings", "year": "2022", "url": "", "author": [ "David Traunecker","Michael Haas","Michael Jarwitz","Thomas Graf" ], "authors": [ {"first" : "David", "last" : "Traunecker"}, {"first" : "Michael", "last" : "Haas"}, {"first" : "Michael", "last" : "Jarwitz"}, {"first" : "Thomas", "last" : "Graf"} ], "abstract": "To achieve sustainable development in today's\r\nproduction facilities, quality assurance of\r\nmanufacturing processes, such as laser welding is very\r\nimportant. In particular, online monitoring for direct\r\ndetection of defective products is especially important.\r\nTo develop a method for detecting pores during the\r\nprocess, this paper investigates the influence of pores on\r\nthe temperature field during laser beam welding of\r\nAlMg3.\r\nNumerical simulations were carried out to theoretically\r\ninvestigate the influence of the pores in the weld seam\r\non the temperature field and experiments were carried\r\nout to validate the simulations.\r\nThe simulations show a clear influence of the pores on\r\nthe temperature field, making the measurement of the\r\ntemperature field suitable as a detection method. The\r\ndetection of the pores from the measured thermal\r\nradiation turned out to be difficult because of the huge\r\ninfluence of the seam surface geometry on the\r\nemissivity. Especially for an automatic data evaluation,\r\nfurther research on sophisticated evaluation algorithms\r\nis required.", "eventtitle" : "ICALEO", "venue" : "Orlando, Florida, United States", "language" : "englisch", "eventdate" : "16 Oktober - 20 Oktober 2022", "bibtexKey": "Traunecker.2022.Detection" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/23fd3318000bf3f9aa569c8f6c5b20442/ifsw", "tags" : [ "LaserMatterInteraction","Diagnostics","Welding","Simulation","Laser","MacroMaterialProcessing","Modeling","from:peterberger" ], "intraHash" : "3fd3318000bf3f9aa569c8f6c5b20442", "interHash" : "9d7bdd5abb23b7564247cf6b3db2477b", "label" : "Understanding Pore Formation in Laser Beam Welding", "user" : "ifsw", "description" : "", "date" : "2020-01-13 00:12:57", "changeDate" : "2020-01-12 23:12:57", "count" : 4, "pub-type": "inproceedings", "journal": "Phsics Procedia","booktitle": "Lasers in Manufacturing 2011","publisher":"Elsevier Ltd.","address":"Amsterdam", "year": "2011", "url": "", "author": [ "Peter Berger","Helmut Hügel","Thomas Graf" ], "authors": [ {"first" : "Peter", "last" : "Berger"}, {"first" : "Helmut", "last" : "Hügel"}, {"first" : "Thomas", "last" : "Graf"} ], "volume": "12, Part A","pages": "0", "venue" : "Munich, Germany", "eventdate" : "May 23 - 26, 2011", "eventtitle" : "Sixth International WLT Conference on Lasers in Manufacturing (LiM)", "doi" : "10.1016/j.phpro.2011.03.001", "bibtexKey": "Berger.2011.Understanding" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2b4327e39b8ddb363c6f96bd2c8023dc9/ifsw", "tags" : [ "LaserMatterInteraction","Diagnostics","Welding","Simulation","Laser","MacroMaterialProcessing","Modeling","from:peterberger" ], "intraHash" : "b4327e39b8ddb363c6f96bd2c8023dc9", "interHash" : "9d7bdd5abb23b7564247cf6b3db2477b", "label" : "Understanding Pore Formation in Laser Beam Welding", "user" : "ifsw", "description" : "", "date" : "2020-01-13 00:12:57", "changeDate" : "2020-01-12 23:12:57", "count" : 4, "pub-type": "inproceedings", "journal": "Phsics Procedia","booktitle": "Lasers in Manufacturing 2011","publisher":"Elsevier Ltd.","address":"Amsterdam", "year": "2011", "url": "", "author": [ "Peter Berger","Helmut Hügel","Thomas Graf" ], "authors": [ {"first" : "Peter", "last" : "Berger"}, {"first" : "Helmut", "last" : "Hügel"}, {"first" : "Thomas", "last" : "Graf"} ], "volume": "12, Part A", "venue" : "Munich, Germany", "eventdate" : "May 23 - 26, 2011", "eventtitle" : "Sixth International WLT Conference on Lasers in Manufacturing (LiM)", "doi" : "10.1016/j.phpro.2011.03.001", "bibtexKey": "Berger.2011.Understanding" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/25bfddef4c24fe7eb993bc7a73d8032bc/ifsw", "tags" : [ "LaserMatterInteraction","Diagnostics","Welding","Simulation","Laser","MacroMaterialProcessing","Modeling","from:peterberger" ], "intraHash" : "5bfddef4c24fe7eb993bc7a73d8032bc", "interHash" : "21b15bb6c0f6f4ab3f0b4d88672533f6", "label" : "Understanding of Humping Based on Conservation of Volume Flow", "user" : "ifsw", "description" : "", "date" : "2020-01-13 00:12:57", "changeDate" : "2020-01-12 23:12:57", "count" : 2, "pub-type": "inproceedings", "journal": "Phsics Procedia","booktitle": "Lasers in Manufacturing 2011","publisher":"Elsevier Ltd.","address":"Amsterdam", "year": "2011", "url": "", "author": [ "Peter Berger","Helmut Hügel","Axel Heß","Rudolf Weber","Thomas Graf" ], "authors": [ {"first" : "Peter", "last" : "Berger"}, {"first" : "Helmut", "last" : "Hügel"}, {"first" : "Axel", "last" : "Heß"}, {"first" : "Rudolf", "last" : "Weber"}, {"first" : "Thomas", "last" : "Graf"} ], "volume": "12, Part A", "venue" : "Munich, Germany", "eventdate" : "May 23 - 26, 2011", "eventtitle" : "Sixth International WLT Conference on Lasers in Manufacturing (LiM)", "doi" : "10.1016/j.phpro.2011.03.001", "bibtexKey": "Berger.2011.Understanding" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/23fd3318000bf3f9aa569c8f6c5b20442/peterberger", "tags" : [ "Diagnostics","Laser","LaserMatterInteraction","MacroMaterialProcessing","Modeling","Simulation","Welding" ], "intraHash" : "3fd3318000bf3f9aa569c8f6c5b20442", "interHash" : "9d7bdd5abb23b7564247cf6b3db2477b", "label" : "Understanding Pore Formation in Laser Beam Welding", "user" : "peterberger", "description" : "", "date" : "2020-01-13 00:12:55", "changeDate" : "2020-01-12 23:15:02", "count" : 4, "pub-type": "inproceedings", "journal": "Phsics Procedia","booktitle": "Lasers in Manufacturing 2011","publisher":"Elsevier Ltd.","address":"Amsterdam", "year": "2011", "url": "", "author": [ "Peter Berger","Helmut Hügel","Thomas Graf" ], "authors": [ {"first" : "Peter", "last" : "Berger"}, {"first" : "Helmut", "last" : "Hügel"}, {"first" : "Thomas", "last" : "Graf"} ], "volume": "12, Part A","pages": "0", "venue" : "Munich, Germany", "eventdate" : "May 23 - 26, 2011", "eventtitle" : "Sixth International WLT Conference on Lasers in Manufacturing (LiM)", "doi" : "10.1016/j.phpro.2011.03.001", "bibtexKey": "Berger.2011.Understanding" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/25bfddef4c24fe7eb993bc7a73d8032bc/peterberger", "tags" : [ "Diagnostics","Laser","LaserMatterInteraction","MacroMaterialProcessing","Modeling","Simulation","Welding" ], "intraHash" : "5bfddef4c24fe7eb993bc7a73d8032bc", "interHash" : "21b15bb6c0f6f4ab3f0b4d88672533f6", "label" : "Understanding of Humping Based on Conservation of Volume Flow", "user" : "peterberger", "description" : "", "date" : "2020-01-13 00:12:55", "changeDate" : "2020-01-12 23:15:02", "count" : 2, "pub-type": "inproceedings", "journal": "Phsics Procedia","booktitle": "Lasers in Manufacturing 2011","publisher":"Elsevier Ltd.","address":"Amsterdam", "year": "2011", "url": "", "author": [ "Peter Berger","Helmut Hügel","Axel Heß","Rudolf Weber","Thomas Graf" ], "authors": [ {"first" : "Peter", "last" : "Berger"}, {"first" : "Helmut", "last" : "Hügel"}, {"first" : "Axel", "last" : "Heß"}, {"first" : "Rudolf", "last" : "Weber"}, {"first" : "Thomas", "last" : "Graf"} ], "volume": "12, Part A", "venue" : "Munich, Germany", "eventdate" : "May 23 - 26, 2011", "eventtitle" : "Sixth International WLT Conference on Lasers in Manufacturing (LiM)", "doi" : "10.1016/j.phpro.2011.03.001", "bibtexKey": "Berger.2011.Understanding" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2b4327e39b8ddb363c6f96bd2c8023dc9/peterberger", "tags" : [ "Diagnostics","Laser","LaserMatterInteraction","MacroMaterialProcessing","Modeling","Simulation","Welding" ], "intraHash" : "b4327e39b8ddb363c6f96bd2c8023dc9", "interHash" : "9d7bdd5abb23b7564247cf6b3db2477b", "label" : "Understanding Pore Formation in Laser Beam Welding", "user" : "peterberger", "description" : "", "date" : "2020-01-13 00:12:55", "changeDate" : "2020-01-12 23:15:02", "count" : 4, "pub-type": "inproceedings", "journal": "Phsics Procedia","booktitle": "Lasers in Manufacturing 2011","publisher":"Elsevier Ltd.","address":"Amsterdam", "year": "2011", "url": "", "author": [ "Peter Berger","Helmut Hügel","Thomas Graf" ], "authors": [ {"first" : "Peter", "last" : "Berger"}, {"first" : "Helmut", "last" : "Hügel"}, {"first" : "Thomas", "last" : "Graf"} ], "volume": "12, Part A", "venue" : "Munich, Germany", "eventdate" : "May 23 - 26, 2011", "eventtitle" : "Sixth International WLT Conference on Lasers in Manufacturing (LiM)", "doi" : "10.1016/j.phpro.2011.03.001", "bibtexKey": "Berger.2011.Understanding" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/299847bdca944ec8098f4eefeeb11fc4e/florianfetzer", "tags" : [ "SPH","diagnostics","laser","simulation","welding" ], "intraHash" : "99847bdca944ec8098f4eefeeb11fc4e", "interHash" : "4bee02a9772238290731d2c8ec9aac3d", "label" : "Experimental and numerical investigation of the capillary front and side walls during laser beam welding", "user" : "florianfetzer", "description" : "", "date" : "2018-03-25 18:50:56", "changeDate" : "2018-03-30 10:07:01", "count" : 2, "pub-type": "inproceedings", "year": "2017", "url": "", "author": [ "Florian Fetzer","Hu Haoyue","Rudolf Weber","Thomas Graf" ], "authors": [ {"first" : "Florian", "last" : "Fetzer"}, {"first" : "Hu", "last" : "Haoyue"}, {"first" : "Rudolf", "last" : "Weber"}, {"first" : "Thomas", "last" : "Graf"} ], "abstract": "In deep penetration laser beam welding the distribution of absorbed laser intensity on the walls of the capillary determines local recoil pressure which is a driver for melt flow. This again influences the distribution of absorbed laser power and pressure at the capillary. High speed imaging of melting and evaporation caused by laser irradiation of edges of pure iron sheets is performed with the aim to visualize these phenomena at the capillary walls. High speed recordings with a frame rate of up to 100 kHz are acquired. These experiments are used to validate transient simulations of the capillary front wall in laser beam welding by applying an approach where ray-tracing calculations are coupled to a Smoothed Particle Hydrodynamics simulation of the fluid dynamics.", "eventtitle" : "Lasers in Manufacturing Conference 2017", "venue" : "Munich", "bibtexKey": "fetzer2017experimental" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/22b06c5846417254832c397a9f8ce55ed/ifsw", "tags" : [ "Modelling","Laser","Diagnostics","LaserMatterInteraction","from:peterberger","Peer","Simulation" ], "intraHash" : "2b06c5846417254832c397a9f8ce55ed", "interHash" : "5fc4ba540ea48a94a3bc8d8d0576cf52", "label" : "Nuclear quadrupole resonance of an electronically excited statefrom high-resolution hole-burning spectroscopy", "user" : "ifsw", "description" : "", "date" : "2017-12-21 13:47:30", "changeDate" : "2017-12-21 12:47:30", "count" : 2, "pub-type": "article", "journal": "Physical Review B", "year": "2003", "url": "", "author": [ "R. Klieber","Andreas Michalowski","R. Neuhaus","D. Suter" ], "authors": [ {"first" : "R.", "last" : "Klieber"}, {"first" : "Andreas", "last" : "Michalowski"}, {"first" : "R.", "last" : "Neuhaus"}, {"first" : "D.", "last" : "Suter"} ], "volume": "67","pages": "184103-1 - 184103-6", "bibtexKey": "Klieber.2003.Nuclear" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/22b06c5846417254832c397a9f8ce55ed/peterberger", "tags" : [ "Diagnostics","Laser","LaserMatterInteraction","Modelling","Peer","Simulation" ], "intraHash" : "2b06c5846417254832c397a9f8ce55ed", "interHash" : "5fc4ba540ea48a94a3bc8d8d0576cf52", "label" : "Nuclear quadrupole resonance of an electronically excited statefrom high-resolution hole-burning spectroscopy", "user" : "peterberger", "description" : "", "date" : "2017-12-21 13:47:27", "changeDate" : "2017-12-21 12:50:33", "count" : 2, "pub-type": "article", "journal": "Physical Review B", "year": "2003", "url": "", "author": [ "R. Klieber","Andreas Michalowski","R. Neuhaus","D. Suter" ], "authors": [ {"first" : "R.", "last" : "Klieber"}, {"first" : "Andreas", "last" : "Michalowski"}, {"first" : "R.", "last" : "Neuhaus"}, {"first" : "D.", "last" : "Suter"} ], "volume": "67","pages": "184103-1 - 184103-6", "bibtexKey": "Klieber.2003.Nuclear" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2730adc83377cb0914b1c8a4d41c2e25c/ifsw", "tags" : [ "Modelling","Laser","Diagnostics","LaserMatterInteraction","from:peterberger","Peer","Simulation" ], "intraHash" : "730adc83377cb0914b1c8a4d41c2e25c", "interHash" : "7199feb00311e2dcce65fef88026c7e3", "label" : "Analytical investigations on geometrical influences on laser drilling", "user" : "ifsw", "description" : "", "date" : "2017-12-21 13:35:42", "changeDate" : "2017-12-21 12:35:42", "count" : 2, "pub-type": "article", "journal": "Journal of Physics D: Applied Physics", "year": "2001", "url": "", "author": [ "Andreas Ruf","Peter Berger","Friedrich Dausinger","Helmut Hügel" ], "authors": [ {"first" : "Andreas", "last" : "Ruf"}, {"first" : "Peter", "last" : "Berger"}, {"first" : "Friedrich", "last" : "Dausinger"}, {"first" : "Helmut", "last" : "Hügel"} ], "volume": "34","pages": "2918", "bibtexKey": "Ruf.2001.Analytical" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2d3c279c05d531c47e9549c4ab856fd23/ifsw", "tags" : [ "Modelling","Laser","Diagnostics","LaserMatterInteraction","from:peterberger","Simulation" ], "intraHash" : "d3c279c05d531c47e9549c4ab856fd23", "interHash" : "f647a178e6a2eabb34d80518dc543691", "label" : "Shadowgraphic and interferometric investigations on Nd:YAG laser-induced vapor/plasma plumes for different processing wavelengths", "user" : "ifsw", "description" : "", "date" : "2017-12-21 13:35:40", "changeDate" : "2017-12-21 12:35:40", "count" : 2, "pub-type": "article", "journal": "Applied Physics", "year": "1999", "url": "", "author": [ "Detlef Breitling","Henrik Schittenhelm","Peter Berger","Friedrich Dausinger","Helmut 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