Four-harness satin

Four-harness satin weave Also called crowfoot satin because the weaving pattern resembles the imprint of a crow s foot. It is a... 

Satin weave The warp and weft threads are crossed in a programmed order and frequency to obtain a flat appearance. As a result, one side of the fabric has more warp threads, while the back appears to consist mainly of weft threads. The higher the satin number (7 satin, 8 satin), the higher the count of warp and weft threads. Satin weaves allow production of fabrics with high mass per unit of surface area, and good drapability over molds. Different satin patterns are used. See Ei t hamess satin and four-harness satin. 

Four-harness satin refers to a fabric weave also named crowfoot satin because the weaving pattern when laid out on cloth design paper resembles the imprint of a crow s foot. In this type of weave there is a three by one interlacing, that is, a filing thread floats over the three warp threads and then under one. This type of fabric looks different on one side than on the other. Fabrics with this weave are more pliable than either the plain or basket weave and, consequently, are easier to form around curves. 

To integrate the ultrasonic sensor to textile structures as well as to form electric circuits in the stmcmres, silver-plated nylon yarn with a linear resistance of <50 n/m and with a yam count of 312/34f x 4 dtex is used. To prevent formation of short circuits in the textile-based electric circuit, conductive yams are hidden in the stmcture. A fabric stmcmre is considered as a double-woven fabric, and conductive yarns are placed in the middle layer of the stmcmre. The set of warp yams of the upper layer are linked to the set of weft yarns from the bottom layer, and thus the two layers are held together. A four-harness satin weave is chosen for both layers. Fig. 3.2 shows the diagram representing the drawdown, threading, and lift plan of the double-woven cloth together with the 3D-graphical representation of the woven fabric stmcture. 

Fabric Style 285 (four-harness satin weave) in Fiberite 934 epoxy. Fiberite Corp., Winona, Minn. tWet indicates that sample was tested after 600 hours at 7TC and 75% RH. 

A 5-harness satin (5-HS) weave will have its warp yarns running over four weft yarns and under one weft yarn as shown in Fig. 9.5. Other n-HS weaves used in composite materials include 8-HS, where the warp yarn passes over seven weft yarns and under one, and 12-HS where the warp yarn passes over eleven weft yarns and under one. It can easily be understood that the more yarn passes over the other yarn, the straighter and less crimped will be the yarns present in the fabric. The straighter the segments, the more the fabric composite behaves as a lamina in a laminated composite, increasing the inplane properties at the expense of out-of-plane properties and interlaminar shear strength - and of course vice versa. 

The Sylramic fiber was fabricated by DuPont as a 10 pm diameter stochiometric SiC fiber and bundled into tows of 800 fibers each. The sizing applied was polyvinyl alcohol (PVA). For this study, the four lots of fibers, which were used, were wound on 19 different spools. The tow spools were then woven into a 5 harness satin (HS) balanced weave at 20 ends per inch (EPI). 

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