Fiber pullout test

Pitkethly, M.J. and Doble, J.B. (1990). Characterizing the fiber/matrix interface of carbon fiber-reinforced composites using a single fiber pullout test. Composites 21, 389-395. 

Fig. 4.25. Schematic presentations of applied stress versus displacement (

Bannister, D.J., Andrews, M.C., Cervenka, A.J. and Young, R.J. (1995). Analysis of the single fiber pullout test by means of Raman spectroscopy. Part 11. Micromechanics of deformation for an aramid/ epoxy system. Composites Sci. Technol. 53, 411—421. 

Similarly, a book on the Adhesion of piles in stiff clays is more about frictional sliding of the pile as it is pulled out of the clay, rather like the fiber pullout test described in Chapter 16. However, once the pile is removed, clay may then be seen adhering to the steel surface. Clearly, both friction and adhesion can be observed simultaneously in this case, as shown in Fig. 2.2(d). 

Table 9.1 Sisal fiber/polyester interfacial shear strength measured by single fiber pullout test. Reproduced with kind permission of the publishers of [38]...

Figure 2. Schematic illustration of single betelnut fiber pullout test.

Figure 2-4. Schematic of Fiber Pullout Test Method ...

The measnrement of adhesion between fibers and matrix in a fibrous composite is much more difficult than the measurement of the systems described above. Two methods that have been investigated in the past are the fiber pullout and short beam fragmentation test. The fiber pullout test consists of a drop or disk of adhesive or matrix material placed on the fiber. The fiber is then pulled through an opening which strips the adhesive drop from the fiber. 

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