Semi-discrete simulation of interface behavior during single fiber pull-out with application to dynamically loaded fiber-reinforced cementitious composites

2019 ◽  
Author(s):  
B Choo
Keyword(s):  
Single Fiber ◽  
Cementitious Composites ◽  
Fiber Reinforced ◽  
Interface Behavior ◽  
Discrete Simulation ◽  
Pull Out ◽  
Dynamically Loaded ◽  
Fiber Reinforced Cementitious Composites ◽  
Loaded Fiber

Fracture Energy Optimization in Synthetic Fiber Reinforced Cementitious Composites

1990 ◽  
Vol 211 ◽  
Author(s):  
Victor C. Li ◽  
Youjiang Wang ◽  
Stanley Backer
Keyword(s):  
Fracture Energy ◽  
Tensile Behavior ◽  
Model Systems ◽  
Synthetic Fiber ◽  
Fracture Mechanisms ◽  
Cementitious Composites ◽  
Fiber Reinforced ◽  
Cracking Behavior ◽  
Pull Out ◽  
Fiber Reinforced Cementitious Composites

AbstractA study has been carried out on cementitious composites reinforced with various synthetic fibers, focusing on their tensile behavior, toughness, and fracture mechanisms. A model is formulated to predict the tensile behavior and fracture energy of fiber reinforced cementitious composites (FRC) with short, randomly distributed fibers. The model accounts for the pull-out of fibers oblique to the fracture surfaces (including snubbing friction effect), and the variation of the fiber/matrix interfacial shear stress during pull-out. Experimental and analytical results are shown to be in close agreement for the one class of fiber reinforcement which best satisfies the assumptions of the model. Systems which violate the assumptions exhibited different failure mechanisms and were observed to show less satisfactory reinforcement performance, especially the composite fracture energy. The model is used to examine the effect of fiber properties on composite post-cracking behavior and is useful in design of such material systems with optimum performance and cost effectiveness.

Effect of Sisal Fiber Surface Treatments on Sisal Fiber Reinforced Polypropylene (PP) Composites

2014 ◽  
Vol 906 ◽  
pp. 167-177 ◽  
Author(s):  
Hou Lei Gan ◽  
Lei Tian ◽  
Chang Hai Yi
Keyword(s):  
Surface Morphology ◽  
Morphological Changes ◽  
Fiber Surface ◽  
Atmospheric Plasma ◽  
Single Fiber ◽  
Sisal Fiber ◽  
Fiber Reinforced ◽  
Polypropylene Composites ◽  
Pull Out ◽  
Debonding Process

Abstract: The Interface of sisal fiber which was treated by using alkali, potassium permanganate, atmospheric plasma and silane reinforced polypropylene composites were investigated by single fiber pull-out testes and surface morphology were studied. The results indicated that the morphological changes observed on the sisal fiber surface were obviously evident. Untreated, permanganate and plasma treated sisal fiber reinforced PP show a stable debonding process. Silane treated sisal fiber reinforced PP show an unstable debonding process. Single fiber pull-out tests indicated that the IFSS value was in the order of FIB < FIBKMnO4 < FIBP < FIBKH-550 < FIBKH-570. As can be seen from surface morphology of pull-out fiber, a little of PP resin was adhered to the pull-out FIB, FIBKMnO4, FIBP of sisal fiber. In contrast, PP resin at the surface of pull-out fiber was flaked off and sisal fibril was drawn out from sisal fiber were observed from pull-out fibers of FIBKH-550 and FIBKH-570.

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