Automatic real-time guidance of laser machining with inline coherent imaging

2010 ◽  
Author(s):  
Paul J. L. Webster ◽  
Logan G. Wright ◽  
Kevin D. Mortimer ◽  
Ben Y. Leung ◽  
Joe X. Z. Yu ◽  
...  
Keyword(s):  
Real Time ◽  
Laser Machining ◽  
Coherent Imaging ◽  
Inline Coherent Imaging

Automatic real-time guidance of laser machining with inline coherent imaging

2011 ◽  
Vol 23 (2) ◽  
pp. 022001 ◽  
Author(s):  
Paul J. L. Webster ◽  
Logan G. Wright ◽  
Kevin D. Mortimer ◽  
Ben Y. Leung ◽  
Joe X. Z. Yu ◽  
...  
Keyword(s):  
Real Time ◽  
Laser Machining ◽  
Coherent Imaging ◽  
Inline Coherent Imaging

Tracking and controlling the morphology evolution of 3D powder-bed fusion in situ using inline coherent imaging

2020 ◽  
Vol 32 ◽  
pp. 100978 ◽  
Author(s):  
Tristan G. Fleming ◽  
Stephen G.L. Nestor ◽  
Troy R. Allen ◽  
Mark A. Boukhaled ◽  
Nathan J. Smith ◽  
...  
Keyword(s):  
Morphology Evolution ◽  
Powder Bed Fusion ◽  
Coherent Imaging ◽  
Powder Bed ◽  
Inline Coherent Imaging

Dual-channel inline coherent imaging

2019 ◽  
Vol 58 (7) ◽  
pp. 1614
Author(s):  
Faleh Altal ◽  
Troy R. Allen ◽  
Stephen G. L. Nestor ◽  
Tristan G. Fleming ◽  
James M. Fraser
Keyword(s):  
Coherent Imaging ◽  
Dual Channel ◽  
Inline Coherent Imaging

scholarly journals Monitoring of the Ceramic Kerf During the Laser Cutting Process through Piezoelectric Transducer

Proceedings ◽  
2019 ◽  
Vol 42 (1) ◽  
pp. 44
Author(s):  
Ana C. Balarin de Andrade ◽  
Paulo R. Aguiar ◽  
Martin A. Aulestia Viera ◽  
Felipe A. Alexandre ◽  
Pedro Oliveira Junior ◽  
...  
Keyword(s):  
Real Time ◽  
Piezoelectric Transducer ◽  
Laser Cutting ◽  
Sampling Rate ◽  
Cutting Process ◽  
Laser Machining ◽  
Process Conditions ◽  
Real Time Monitoring ◽  
Ceramic Components ◽  
Conventional Methods

Advanced ceramics are widely used in industry due to their unique properties. However, the machining of ceramic components by conventional methods is difficult due to their high level of hardness and brittleness. In this sense, laser beam machining (LBM) is presented as an alternative to conventional methods, enabling the machining of workpieces through more accurate and less invasive techniques. Despite the advantages of laser machining, the process still needs to be studied in detail, as advanced ceramic machining is considered a stochastic process. Thus, real-time monitoring systems are required in order to optimize the ceramic laser machining. Therefore, this paper proposes a novel method for monitoring the cutting kerf in the laser cutting process of ceramic components using a low-cost piezoelectric transducer (PZT) and digital signal processing. Tests were performed on the surface of an alumina ceramic workpiece under different machining conditions. The cutting kerf was measured by a digital microscope and the raw signals from the PZT transducer were collected at a sampling rate of 2 MHz. Time domain and frequency domain analyses were performed in order to find a frequency band that best correlates with the process conditions. Finally, a linear regression was calculated in order to correlate the PZT signal and the measured kerf. The results showed that the piezoelectric transducer was sensitive to the acoustic activity generated during the process, allowing the real-time monitoring of the cutting kerf. Thus, the approach proposed in this paper can be used efficiently in the monitoring of the laser cutting process.

Real-time optical pyrometer in laser machining

1994 ◽  
Vol 5 (5) ◽  
pp. 563-573 ◽  
Author(s):  
M Ignatiev ◽  
I Smurov ◽  
G Flamant
Keyword(s):  
Real Time ◽  
Optical Pyrometer ◽  
Laser Machining

Tracking the Morphology Evolution of 3D Selective Laser Melting in situ using Inline Coherent Imaging

2018 ◽  
Author(s):  
Tristan G. Fleming ◽  
Stephen G. L. Nestor ◽  
Mark A. Boukhaled ◽  
Troy R. Allen ◽  
Nathan J. Smith ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Morphology Evolution ◽  
Laser Melting ◽  
Coherent Imaging ◽  
Inline Coherent Imaging
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