Pull-out testing of carbon/bismaleimide systems in the temperature range 20–250°C

Indirect estimation of fiber/polymer bond strength and interfacial friction from maximum load values recorded in the microbond and pull-out tests. Part II: Critical energy release rate

“…To illustrate this, we considered several polymer-ber pairs tested using the microbond and pull-out tests, both from our own experiments and from the literature, where all required properties of bers and matrices have been quoted [3,7,28,29]. The same datasets were already analyzed by us using the stress-based approach [17], and some of them were treated using frictionless stress-based and energy-based analyses in Ref.…”

Adhesional pressure as a criterion for interfacial failure in fibrous microcomposites and its determination using a microbond test

“…The s app parameter is sufficient for qualitative estimation of the interfacial bond strength and for comparative study of different interfaces (obtained, for instance, using surface modification of the fiber and/or the matrix), when mechanical properties of both components and the test geometry remain unchanged. However, numerous experiments have shown that the apparent IFSS depends on the embedded length [4][5][6]14,18,20,[23][24][25][26][27]. Moreover, the s app values have been found to be highly affected by interfacial friction between the fiber and the matrix which develops during the debonding process [9,[28][29][30][31][32][33][34]; thus, s app appeared to represent a complex combined effect of interfacial bonding and friction rather than pure bond strength.…”

“…These techniques have been shown to be relatively simple, reproducible and very sensitive to the state of the interface, e.g., to various fiber surface treatments [5,6,[19][20][21][22][23]. They are based on the measurement of the force, F max , required to pull out a single fiber with one end embedded in a droplet of the matrix material.…”

Interfacial Aspects of Electrodeposited Carbon Fiber-Reinforced Epoxy Composites Using Monomeric and Polymeric Coupling Agents

“…Measuring IFSS between fiber and matrix requires several micromechanical techniques. Some of the most frequently used techniques include the single-fiber microdroplet test (also called the single-fiber pullout test) (1)(2)(3), the fragmentation test (also called the single-fiber composites (SFC) test) (4)(5)(6), and the microindentation method 1 To whom correspondence should be addressed. (7), which is usually used for brittle ceramic matrix composites.…”