The Onset of Tearing at Slits in Stressed Coated Plain Weave Fabrics

[+] Author and Article Information
T. A. Godfrey

Natick Soldier Center, U.S. Army Research, Development & Engineering Command, Natick, MA 01760-5020

J. N. Rossettos

Department of Mechanical, Industrial & Manufacturing Engineering, Northeastern University, Boston, MA 02115-5096

S. E. Bosselman

Natick Soldier Center, U.S. Army Research, Development & Engineering Command, Natick, MA 01760-5020

J. Appl. Mech 71(6), 879-886 (Jan 27, 2005) (8 pages) doi:10.1115/1.1794165 History: Received November 24, 2003; Revised April 02, 2004; Online January 27, 2005
Copyright © 2004 by ASME
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Configuration of biaxial remote stresses on damaged fabric
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(a). Geometry of damaged fabric indicating the elastic deformation. Breaks in #1 yarns, dashed lines represent deformed #2 yarns. (b). Equilibrium of the jth cross-over point unit cell under forces due to rotation of the tensioned #2 yarns and shear in the coating.
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Cross-section showing first intact #1 yarn at slit tip and location of possible separation or yielding of coating. Arrows indicate motion of #2 yarns.
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Analytical results for inelastic zone extent, l⁁, with increasing applied load, p⁁, for slits involving seven, fifteen, and 31 severed yarns (# breaks indicated next to curves)
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Experimental (symbols) and analytical results (curves) for SCFt versus slit length. Top-most curve, labeled “Hedgepeth,” shows SCFt from Ref. 1. Remaining curves indicate results for various p⁁u (values indicated next to curves).
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Post-test condition of fabric c specimen




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