Looking at the status of control techniques in laser manufacturing processes one has to focus on the sensor technique, the computing hardware and the algorithms available. Sensor technology has evolved in the last years. Now fast two-dimensional sensors like CMOS cameras can be applied whereas five year ago mostly one dimensional sensors like photodiodes were common. Even three dimensional sensors are being developed and might have a good potential in future applications. The use of such sensors has shown varying success in different processes. Thus this article deals with materials processing like welding and brazing of metals and plastics welding as well as with medical applications like cutting human tissue.
REFERENCES
1.
Tissot
, J-L.
; Legras
, O.
; Trouilleau
, C.
; Crastes
, A.
; Fieque
, B.
: Uncooled microbolometer detector: Recent development at ULIS
, In: Proc. of SPIE
, Vol. 5987
, 2005
, pp 200
–210
2.
IDS Imaging GmbH µEYE UI-164xLE; Produktdatenblatt
3.
Göhring
, D.
: Digitalkameratechnologien – eine vergleichende Betrachtung
; Universität Berlin
, 2002
4.
CSEM, Swiss Ranger SR-3000, Produkt-datenblatt
5.
Haran
, F. M.
; Hand
, D. P.
; Ebrahim
, S. M.
; Peters
, C.
; Jones
J. D. C.
: Optical signal oscillations in laser keyhole welding and potential application to lap welding
. In: Meas. Sci. Technol.
, vol 8
, 1997
, 627
–633
6.
Deininger
, C.
; Gärtner
, P.
; Weberpals
, J.
; Dausinger
, F.
: Diagnostics of welding with high brightness lasers
. In: Proc. of the 4th International WLT-Conference on Lasers in Manufacturing 2007
, Munich, June 2007
, 289
–293
7.
Kägeler
, C.
; Klämpfl
, F.
; Schmidt
, M.
; Otto
, A.
: Investigating a laser welding process with methods of non-linear dynamics
, Proc. of the 4th International WLT-Conference on Lasers in Manufacturing 2007
, Munich
, June 2007
8.
Trbola
, J.
; Braunsteiner
, A.
; Dörner
, M.
; Grünberger
, Th.
; Toll
, H.
: Online process monitoring for remote laser welding – Quality compared to conventional laser beam welding systems in car body engineering
. In: Proc. of the European Automotive Laser Application 2007
, Bad Nauheim
, 2007
9.
Hillers
, O.
: Fehlerklassifizierende Prozesskon-trolle mittels multivarianter Statistik beim Laserstrahlschweißen
, Dissertation, 2003
10.
4D Ingenieurgesellschaft für Technische Dienstleistungen mbH: Beschreibung Prozess-überwachungssystem WeldWatcher, www.4d-gmbh.de; August
2007
11.
Poprawe
, R.
: Lasertechnik für die Fertigung; Grundlagen, Perspektiven und Beispiele für den innovativen Ingenieur.
Springer
, Berlin Heidelberg New York
, ISBN 3-540-21406-212.
Beersiek
, J.
; Devermann
, T.
, Behler
, K.
: Practical applications on in-process monitoring for laser processes – not only for single welds and common materials
. In: Proc. of the 23rd International Congress on Applications of Lasers and Electro-Optics
, 2004
, San Francisco
, 200413.
Beersiek
, J.
: New Aspects of Monitoring with a CMOS camera for Laser Materials Processing
. In: Proc. of the 21st International Congress on Applications of Lasers and Electro-Optics 2002
, Scottsdale
, 2002
14.
Kogel-Hollacher
, M.
; Müller-Borhanian
, J.
; Dietz
, C.
; Nicolay
, T.
; Kattwinkel
, A.
: Process control in laser material processing – Increased robustness in failure detection by combining various sensor technologies
. In: Proc. of the 4th International WLT-Conference on Lasers in Manufacturing 2007
, Munich
, June 2007
, 143
–147
15.
Otto
, A.
; Hohenstein
, R.
; Dietrich
, S.
: Diagnostik und Regelung beim Laserstrahl-schweißen
. In: 5. Laser-Anwenderforum
, Bremen
, 2006
16.
Otto
, A.
; Geiger
, M.
: From basic research to industrial applications – new developments for laser beam welding
. In: Proc. of the 4th International WLT-Conference on Lasers in Manufacturing 2007
, Munich
, June 2007
, 5
–11
17.
A.
Grimm
, M.
Schmidt
, P.
Hoffmann
: Temperature-based online quality control for laser brazing with high-power diode lasers
, Proc. of the 4th International WLT-Conference on Lasers in Manufacturing 2007
, Munich, June 2007
18.
Hoffmann
, P.
; Schwab
, J.
; Kugler
, P.
: Laser-strahlhartlöten – Systemtechnik, Anwendungen und Potentiale
. Schrift zum 4. Laser-Anwenderforum
, Bremen
, 12.-13.09.2002, ERLAS Erlanger Lasertechnik GmbH, Erlangen, 2002
.19.
N.N.
: Schweißen mit Qualitätsprüfung
. In: Laser – Entwicklung und industrielle Anwen-dung
, Heft Nr. 4
, 19
. Jahrgang, Juni 2005
, Kaufering: Verlag b-Quadrat, 16
–17
.20.
Wildmann
, D.
; Stöhr
, H.
: Schweißnahtkontrolle– Drei parallele Verfahren
. In: QZ Qualität und Zuverlässigkeit
, Heft 4
/2004
, Jahrgang 49, München: Carl Hanser Verlag, 62
–63
.21.
Wildmann
, D.
: Die Heckklappe des BMW 3er kontrolliert laserfügen. In: Blech Inform, Heft 3/2005, München
: Carl Hanser Verlag
, 32
–35
.22.
Gruber
, F. J.
: Die 0-Fuge im Griff
. In: EuroLaser, Heft November 04/2003, Hannover: Schlütersche Verlagsgesellschaft
, 42
–45
.23.
Tangermann
K
, Uller
J.
Einsatz eines Er:YAG-Lasers in der Mund-, Kiefer-, Gesichtschirurgie
. LaserOpto
, 2001
, 33
: 40
–45
24.
Rupprecht
S
, Tangermann
K
, Neukam
FW
, Wiltfang
J. Er
: YAG laser osteotomy directed by sensor controlled systems
. J Craniomaxillofac Surg
, 2003
; 31
: 337
–342
25.
Rupprecht
S
, Tangermann-Gerk
K
, Wiltfang
J
, Neukam
FW
, Schlegel
A.
Sensor-based laser ablation for tissue specific cutting: An experimental study
. Lasers Med Sci
2004
, 19
: 81
–88
26.
Rupprecht
S
, Tangermann-Gerk
K
, Schultze-Mosgau
S
, Neukam
FW
, Ellrich
J.
Neuro-physiological monitoring of alveolar nerve function during sensor-controlled Er:YAG laser corticotomy in rabbits
. Lasers in Surgery and Medicine
, March 2005
; 36
(3
): 186
–192
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