The conventional method of conducting compression tests on fibrous masses employs a "piston-in-cylinder" arrangement. In its most common form this system overestimates the energy required to compress the fibers since it includes the energy expended in overcoming friction between the fibers and the cylinder wall. A new apparatus is described which both avoids this problem and enables the size of such errors in the conventional system to be estimated. Experiments comparing the conventional apparatus with several versions of the new design are described and some optimum dimensions are established for the latter.
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References
1.
Ali. M.A., Whiteley, K.J., and Chaudri, M.A., The Influence of Fiber Characteristics on the Tactile Appraisal of Loose Wool, Part II, J. Textile Inst.62, 375-381 (1971).
2.
Chaudri, M.A. , and Whiteley, K.J., TheInfluence of Natural Variations in Fiber Properties on the Bulk Compression of Wool, Textile Res. J.38, 897-906 (1968).
3.
De MacCarty, P.C., and Dusenbury , J.H., On the Bulk Compression Characteristics of Wool Fibers, Textile Res. J.25, 875-885 (1955).
4.
Dunlop, J.I. , Characterising the Compression Properties of Fiber Masses, J. Textile Inst.65, 532-536 (1974).
5.
Dunlop, J.I., Carnaby, G.A., and Ross, D.A., Bulk, Part I: The Bulk of Loose Wool, WRONZ Communication No. 28, August 1974.
6.
Finch, R.B., Compressional Behavior of Textile Materials, Part I: Measurement at a Constant Rate of Deformation, Textile Res. J.18, 165-177 (1948).
7.
Finch, R.B., Compressional Behavior of Textile Materials, Part II: Measurement of Compressional Stress Relaxation at a Constant Deformation, Textile Res. J.18, 237-243 ( 1948).
8.
Fok, S.M., and Finzel, T.G., Improved Method for Bulk Compression of Staple Fibers, Textile Res. J.26, 684-686 (1956).
9.
Kolb, H.J., Stanley, H.E., Busse, W.F., and Billmeyer, F.W., Application of High Compression Stresses to Textile Fibers, Part II , Textile Res. J.23, 84-90 (1953).
10.
Rees, W.H., The Over-All Specific Volume, Compressibility and Resilience of Fibrous Materials , J. Textile Inst.39, T131-141 (1948).
11.
Sebestyen, E., and Hickie, T.S., TheEffect of Certain Fiber Parameters on the Compressibility of Wool, J. Textile Inst.62, 545-560 (1971).
12.
Shah, S.M.A. , and Whiteley, K.J., TheInfluence of Fiber Characteristics on the Tactile Appraisal of Loose Wool, Part I, J. Textile Inst.62, 361-374 (1971).
13.
Slinger, R.J. , Factors, Influencing the Resistance to Compression of Wool Fiber Ensembles , Textile Res. J.35, 856-858 (1965).
14.
Whiteley, K.J. , Welsman, S.J., and Stanton, J.H., The Resistance to Compression of Australian Merino Fleece Wools, IWTO. Report No. 12, Monaco, June 1980.
