Abrasive waterjet cut surface is characterized using static and dynamic characterization techniques. A novel method of auto regressive moving average model identification called model distance method is utilized here for surface profile and dynamic force characterization. More information about the surface profile generating mechanism is derived through wavelength decomposition of the ARMA models. The dynamic workpiece normal force in abrasive waterjet is influenced by process parameters such as fluctuations in water pressure, change in abrasive flow rate, vibration of the positioning system, traverse speed, nozzle diameter, etc. An attempt has been made in this paper to link the dynamics of the process to the quality of the generated surface. The feasibility of using the dynamic workpiece normal force as a parameter for on-line monitoring of the surface profile generated by abrasive waterjet is also investigated.

1.
Tan, D. K. M., 1986, “A Model for the Surface Finish in Abrasive Waterjet Cutting,” 8th International Symp. on Jet Cutting Technology, England, 9–11 Sept., Paper 31, pp. 309–313.
2.
Hashish, M., 1989, “Advanced Machining with Abrasive Waterjets—Theory and Applications,” Proceedings of Non-Traditional Machining Conference of SME, Oct. 30–Nov. 2, pp. 1–45.
3.
Webb, K. E., and Rajurkar, K. P., 1990, “Surface Characterization of Inconel Cut by Abrasive Waterjet,” Proceedings of CSME Mechanical Engineering Forum.
4.
Hashish
M.
,
1991
, “
Characteristics of Surfaces Machined with Abrasive-Waterjets
,”
ASME Journal of Engineering Materials and Technology
, Vol.
113
, July, pp.
354
362
.
5.
Kovacevic, R., Liaw, H. H., and Barrows, J. F., 1988, “Surface Finish and its Relationship to Cutting Parameters,” Proceedings of 3rd Intl. Grinding Conference, MR88-589, pp. 1–15.
6.
Kovacevic, R., 1991, “Surface Texture in Abrasive Waterjet Cutting,” The SME’s Journal of Manufacturing Systems, Vol. 10, No. 1.
7.
Hashish, M., 1988, “Visualization of the Abrasive Waterjet Cutting Process,” Experimental Mechanics, June, pp. 159–169.
8.
Chao, J., Geskin, E. S., and Chung, Y., 1992, “Investigation of the Dynamics of the Surface Topography Formation during Abrasive Waterjet Machining,” Proceedings of the 11th International Conference on Jet Cutting Technology, 8–10, Sept., St. Andrews, Scotland, pp. 593–603.
9.
Hashish, M., 1992, “On the Modeling of Surface Waviness Produced by Abrasive-Waterjets,” Proceedings of the 11th International Conference on Jet Cutting Technology, 8–10, Sept., St. Andrews, Scotland, pp. 17–34.
10.
Mohan, R., Kovacevic, R., and Zhang, Y. M., 1992, “Characterization of Surface Texture Generated by High Energy Jets,” Proceedings of the ASME Winter Annual Meeting, Nov. 8–13, Anaheim, CA, PED-Vol. 62, pp. 203–218.
11.
Hunt, D. C., Burnham, C. D., and Kim, T. J., 1987, “Surface Finish Characterization in Machining Advanced Ceramics by Abrasive Waterjet,” Proceedings of the 4th U.S. Waterjet Conference, Berkeley, CA, Aug.
12.
Hunt, D. C., Kim, T. J., and Reuber, M., 1988, “Surface Finish Optimization for Abrasive Waterjet Cutting,” 9th International Symp. on Jet Cutting Technology, Oct., Paper CI, pp. 99–112.
13.
Burnham, C. D., and Kim, T. J., 1989, “Statistical Characterization of Surface Finish Produced by a High Pressure Abrasive Waterjet,” Proceedings of 5th American Waterjet Conference, Aug. 29–31, Canada, Paper 16, pp. 165–175.
14.
Curhan, J., Reuber, M., and Kim, T. J., 1989, “Force Control of Surface Finish in Abrasive Waterjet Cutting,” Proceedings of the ASME WAM, San Francisco, CA, Dec. 10–15, PED Vol. 41, pp. 31–36.
15.
Kovacevic, R., and Beardsley, H. E., 1990, “On Line Monitoring the Quality of the Surface Cut by the Abrasive Waterjet,” Proc. of the 4th Intl. Grinding Conference, Oct. 9–11, Dearborn, MI, MR90-535, pp. 1–10.
16.
Whitehouse
D. J.
,
Vanherck
P.
,
De Bruin
W.
, and
Luttervelt Van
C. A.
,
1974
, “
Assessment of Surface Typology Analysis Techniques in Turning
,”
Annals of the CIRP
, Vol.
23
, No.
2
, pp.
265
282
.
17.
O’Conner
R. F.
, and
Spedding
T. A.
,
1992
, “
The Use of Complete Surface Profile Description to Investigate the Cause and Effect of Surface Features
,”
International Journal of Machine Tools Manufacturing
, Vol.
32
, No.
1/2
, pp.
147
154
.
18.
Peters
J.
,
Vanherck
P.
, and
Sastrodinoto
M.
,
1979
, “
Assessment of Surface Typology Analysis Techniques
,”
Annals of the CIRP
, Vol.
28
, No.
21
, pp.
539
554
.
19.
Pandit
S. M.
,
Nassirpour
F.
, and
Wu
S. M.
,
1977
, “
Stochastic Geometry of Anisotropic Random Surfaces with Application to Coated Abrasives
,”
ASME JOURNAL OF ENGINEERING FOR INDUSTRY
, Feb., Vol.
99
, pp.
218
224
.
20.
Wu
S. M.
,
1977
, “
Dynamic Data System—A New Modeling Approach
,”
ASME JOURNAL OF ENGINEERING FOR INDUSTRY
, Aug., Vol.
99
, pp.
708
714
.
21.
Radhakrishnan
T.
, and
Wu
S. M.
,
1981
, “
On-line Hole Quality Evaluation for Drilling Composite Material using Dynamic Data
,”
ASME JOURNAL OF ENGINEERING FOR INDUSTRY
, Vol.
103
, Feb., pp.
119
125
.
22.
Wu, S. M., and Ungpiyakul, T., 1980, “New Applications of Dynamic Data System (DDS) Methodology,” Proceedings of ASM Process Modeling Session, Materials and Process Congress, Cleveland, OH, pp. 23–37.
23.
Pandit
S. M.
, and
Revach
S.
,
1981
, “
A Data Dependent System Approach to Dynamics of Surface Generation Turning
,”
ASME JOURNAL OF ENGINEERING FOR INDUSTRY
, Vol.
103
, Nov., pp.
437
445
.
24.
Williams, R. E., and Rajurkar, K. P., 1991, “Study of Wire Electrical Discharge Machined Surface Characteristics,” Computer Aided Production Engineering, Elsevier, pp. 127–138.
25.
Rajurkar, K. P., and Bhatia, S. K., 1990, “Investigation of Surface Characteristics in Electrochemical Grinding,” ASME Manufacturing International ’90, special volume, pp. 119–124.
26.
Williams
R. E.
, and
Rajurkar
K. P.
,
1992
, “
Stochastic Modeling and Analysis of Abrasive Flow Machining
,”
ASME JOURNAL OF ENGINEERING FOR INDUSTRY
, Vol.
114
, Feb., pp.
74
81
.
27.
Pandit
S. M.
, and
Shunmugam
M. S.
,
1992
, “
Signature of Machine Tool Errors on Surface Texture by DDS
,”
ASME JOURNAL OF ENGINEERING FOR INDUSTRY
, Vol.
114
, Feb., pp.
370
374
.
28.
Kovacevic
R.
, and
Zhang
Y. M.
,
1992
, “
Identification of Surface Characteristics from Large Samples
,”
Proceedings of the Institute of Mechanical Engineers, Part C, Journal of Mechanical Engineering Science
, Vol.
206
, pp.
275
284
.
29.
Pandit, S. M., and Wu, S. M., 1983, Time Series and System Analysis with Applications, John Wiley & Sons, New York.
30.
Box, G. E. P., and Jenkins, G. M., 1976, Time Series Analysis, Forecasting & Control, Holden Day, CA.
31.
Bedrin, C., Yuan, S. F., and Querry, M., 1988, “Investigation of Surfaces Microgeometry in Laser Cutting,” Annals of the CIRP, Vol. 37, No. 1.
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