Thermal energy distribution in the workpiece cut with abrasive waterjet (AWJ) is analyzed using the technique of infrared thermography through isotherms and linescans. Variation in workpiece temperature with thermal conductivity and cutting conditions is studied. The feasibility of visualization of AWJ cutting mechanisms in opaque materials using infrared thermography is investigated. A novel technique of AWJ nozzle wear monitoring through infrared thermography is proposed. A comparative study of infrared thermography results with the readings of thermocouples and the two-dimensional moving line heat source model show a close correspondence indicating that infrared thermography is a good technique for the above application.

Issue Section:
Research Papers
Topics:
Thermal energy, Thermography, Water jet cutting, Cutting, Heat, Nozzles, Temperature, Thermal conductivity, Thermocouples, Visualization, Wear
1.
Ohadi
 
M. M.
,
Ansari
 
A. L.
, and
Hashish
 
M.
,
1992
, “
Thermal Energy Distributions in the Workpiece During Cutting with an Abrasive Waterjet
,”
ASME JOURNAL OF ENGINEERING FOR INDUSTRY
, Feb., Vol.
114
, pp.
67
–
73
.
2.
Ohadi
 
M. M.
, and
Cheng
 
K. L.
,
1993
, “
Modeling of Temperature Distributions in the Workpiece During Abrasive Waterjet Machining
,”
ASME Journal of Heat Transfer
, May, Vol.
115
, pp.
446
–
452
.
3.
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4.
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Ji-Liang
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, and
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Juin-Ren
,
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Infrared Temperature Sensing of Laser Welding
,”
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.
5.
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6.
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7.
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8.
Ueda
 
T.
,
Yamada
 
K.
, and
Sugita
 
T.
,
1992
, “
Measurement of Grinding Temperature of Ceramics Using Infrared Radiation Pyrometer with Optical Fiber
,”
ASME JOURNAL OF ENGINEERING FOR INDUSTRY
, Aug., Vol.
114
, pp.
317
–
322
.
9.
Hamilton, A., Childs, E., and Kunz, M., 1989, “Infrared Thermographic Evaluation of Fiber-Reinforced Composite Structures with Honeycomb and Closed-Cell Cores,” Proceedings of SME’s Conference on Fabricating Composites, IQ89–592, Oct. 3–5, pp. 1–21.
10.
Hashish, M., 1988, “Visualization of the Abrasive Waterjet Cutting Process,” Experimental Mechanics, June, pp. 159–169.
11.
Kovacevic, R., 1988, “Sensor for Detecting the Nozzle Wear in Abrasive Waterjet Cutting Systems,” Invention Disclosure, Syracuse University, Syracuse, NY, March.
12.
Kovacevic, R., 1991, “Development of Opto-electronic Sensor for Monitoring the Abrasive Waterjet Nozzle Wear,” ASME Winter Annual Meeting, Symposium on Sensors, Controls and Quality Issues in Manufacturing, Dec. 1 – 6, Atlanta, GA.
13.
Kovacevic, R., and Chen, G., 1989, “A Workpiece Reactive Force as a Parameter for Monitoring the Nozzle Wear in Turning Operation by Abrasive Waterjet,” Proc. of the ASME Winter Annual Meeting, The High Energy Beam Manufacturing Technology Session, Dec. 14–17, San Francisco, CA.
14.
Mohan
 
R.
,
Kovacevic
 
R.
, and
Damarla
 
R.
,
1994
, “
Real-time Monitoring of AWJ Nozzle Wear Using Artificial Neural Networks
,”
NAMRI/SME Transactions
, Vol.
XXII
, pp.
253
–
258
.
15.
Rosenthal
 
D.
,
1946
, “
The Theory of Moving Sources of Heat and its Application to Metal Treatments
,”
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16.
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17.
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18.
Kovacevic
 
R.
,
Mohan
 
R.
, and
Zhang
 
Y. M.
,
1995
, “
Cutting Force Dynamics as a Tool for Surface Profile Monitoring in AWJ
,”
ASME JOURNAL OF ENGINEERING FOR INDUSTRY
, Aug., Vol.
117
, No.
3
, pp.
340
–
350
.
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