Effect of Fiber Length

Composites having fiber length of 10 mm with bonding agent (resorcinol-formaldehyde resin) showed maximum mechanical properties compared to all other composites. Similarly, in oil pahn-NR composites Joseph et al. [15] indicated that the mechanical properties will depend upon the fiber length. In the case of sisal-oil palm hybrid N R composites, all mechanical properties were at a maximum when the length of the sisal and oil pahn fibers were 10 and 6 mm, respectively [5]. 

longitudinal T, transverse Mixes Lj, Ij. stt f contained fibers 6,10, and 14 mm in length before mixing. 

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Fu, S. and Lauke, B Effects of fiber length and fiber orientation distributions on the tensile strength of short-fiber-reinforced polymers, Composites Sci. Technol., 56, 1179 (1996). 

Russel, W.B. (1973), On the effective moduli of composite materials effect of fiber length and geometry at dilute concentrations. J. Appl. Math. Phys. (ZAMP) 24, 581-599. 

Table XI demonstrates the effect of fiber length on properties for a type of RIM processable material - the urethane modified isocyanurate which has low impact. Table XI ccnpares milled glass fibers with 1/8" chapped strand. The longer aspect length chopped strand provides for true reinforcement. However, it cannot be used in current RRIM equipment.

TABLE 18-3. EFFECT OF FIBER LENGTH ON GREASE CONSISTENCY... 

TABLE 20.6-4 Effect of Fiber Length on Separator Performance... 

Notched Izod impact strength tests have been conducted on the effect of fiber length in a nylon 6/6 compound reinforced with 50 wt% glass fiber. It shows that impact strength of reinforced TPs (RTPs) increases significantly, as fiber length is increased. Similar effects have been measmed with other fibers, such as aramid and carbon, and with other matrices, such as polypropylene and polyphenylene sulphide. 

Tang, C., and Heindel, T.J. (2007), Effect of fiber length distribution on gas holdup in a cocurrent air-water-fiber bubble column, Chemical Engineering Science, 62(5) 1408-1417. 

Therefore, we aim to answer the following questions in this study (1) a proper coating agent to enhance the shape fixity and dispersion ability of the strain hardened short SMPFs (2) the ability for strain hardened SMPU fibers to repeatedly heal wide-opened cracks and (3) the effect of fiber length on the healing efficiency. 

Figure 7.39 Effect of fiber length on crack closure during constrained shape recovery of short programmed SMPFs embedded in composite beams. Source [14] Reproduced with permission fiom Elsevier...

Kitchen SA, Ogin SL, Smith PA, Effect of fiber length on fatigue of short carbon-fiber epoxy... 

TABLE 3.11 Effect of Fiber Length on Phenolic Impact Strength ... 

Melt mixing and solution mixing methods were used to prepare short pineapple leaf fiber-LDPE composites. Effects of fiber length, content, and orientation on the mechanical properties have been studied. The mechanical properties were improved while the elongation at break was found to be reduced. Longitudinally oriented composites describe better properties compared to transversely and... 

Migneault S, Koubaa A, Erchiqui F, Chaala A, Englund K, Krause C, Wolcott M (2008) Effect of fiber length on processing and properties of extruded wood-fiber/hdpe composites. J Appl Polym Sci 110 1086-1092... 

The matrices used in sisal fiber-reinforced composites include thermoplastics (polyethylene, polypropylene, polystyrene, PVC, etc.), thermosets (epoxy, polyester, and phenol-formaldehyde resin, etc.), rubber (namral rubber, styrene-buta-diene mbber, etc.) gypsum, and cement. The effects of fiber length, fiber orientation, processing methods, fiber volume fi-action and fiber surface treatment on the mechanical and physical properties of sisal fiber reinforced composites have been smdied. 

Joseph K, Thomas K, Pavithran C (1992) Viscoelastic properties of short sisal fiber filled low-density polyethylene composites. Effect of fiber length and orientation. Mater Lett... 

Kalaprasad G, Francis B, Thomas S et al (2004) Effect of fiber length and chemical modifications on the tensile properties of intimately mixed short sisal/glass hybrid fiber reinforced low-density polyethylene composites. Polym Int 53 1624—1638... 

Grove, D.A. and Miller, D.E. (1994) The effects of fiber length on the mechanical performance of injection moldable long glass reinforced p>oly-propylene. SPE Tech. Pap., 52nd. ANTEC, 40, 2306-10. 

Zhang H, Zhang Z and Friedrich K (2007) Effect of fiber length on the wear resistance of short fiber reinforced epoxy composites. Compos Sci Technol 67 222-230. 

Kumar K S, Nair C P and Ninan K N (2008) Effect of fiber length and composition on mechanical properties of carbon fiber-reinforced polybenzoxazine, Polym Adv Technol 19 895-904. 

Figure 4.7 and Table 4.2 are reprinted from Composites Science and Technology, Vol. 67, 2007, Authors Zhang H, Zhang Z and Fiiedrich K, Title Effect of fiber length on the wear resistance of short fiber reinforced epoxy composites, pp. 222-230, Copyright (2011), with permission from Elsevier Ltd. 

Effect of Fiber Length on Thermal and Mechanical Properties of Polypropylene Nanobiocomposites Reinforced with Kenaf Fiber and Nanoclay... 

H. Takagi, and Y. Ichihara, Effect of fiber length on mechanical properties of "green" composites using a starch-based resin and short bamboo fibers. JSME Int.. Ser. A 47,551 (2004). 

M. Sumaila, I. Amber, and M. Bawa, Effect of fiber length on the physical and mechanical properties of ramdom oriented, nonwoven short banana (musa balbisiana) fibre/epoxy composite. Cellulose 62, 64 (2013). 

Geethamma, V.G., )oseph, R., and Thomas, S. (1995) Short coir fiber-reinforced natural rubber composites effects of fiber length, orientation, and alkali treatment. J. Appl. Polym. Sci., 55, 583-594. 

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