Interfacial crack propagation arising in single-fiber pull-out tests

Marotzke, Christian; Qiao, Linan

doi:10.1016/s0266-3538(96)00179-0

Cited by 40 publications

(27 citation statements)

References 21 publications

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“…That is, the ISSF of the ⁄ embedded case is about 2/3 of that of 1/4 embedded case. Before crack initiation the radial tensile stress greatly exceed the shear stresses [7,30]. Therefore, and is calculated from the ISSFs.…”

Section: Issf At Point a Of Different In Lmentioning

confidence: 99%

“…Commonly, the failure is assumed to occur when the maximum load is reached. However, pull-out experiments revealed that the interface crack forms long before the maximum load is reached [7]. Besides, a typical force-displacement curve from the pull-out test was shown.…”

Section: Introductionmentioning

confidence: 96%

“…As mentioned above, stress singularities arise at the fibre entry point E as well as at the fibre bonded end A in the theory of elasticity under idealized geometrical conditions, i.e. at sharp transitions between the two phases, even though no interface crack has formed [7]. The order of singularity arising at Point A and at Point E is not constant, but varies with the angle between the two surfaces as well with the elastic constants of fibre and matrix.…”

Section: Introductionmentioning

confidence: 99%

“…The determination of stress intensity factors (i.e. ISSF) remains reserved to the analysis of an interface crack, even though the situation is more complex compared with the homogeneous case [7]. There are two different types of specific singular stress fields at point A as well as at point E. However, little research on these two singular stress fields is found.…”

Section: Introductionmentioning

confidence: 99%

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Intensity of singular stress fields of an embedded fibre under pull-out force

Chen

Zhang

Takaki

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Previous experimental studies of fibre pull-out test show two dangerous points on the interface. Failure usually occurs at the bonded end of the fibre (Point A) or at the entry point on the surface of the matrix (Point E). Both points have different singular stress fields which causes crack initiation, crack propagation, and final failure. In this paper, intensity of singular stress fields (ISSF) at the fibre bonded end A and ISSF at the intersection point E of the fibre and the surface are discussed. The analysis method focuses on calculating the finite element method (FEM) stress radio by using a reference model and an unknown model. In the unknown model and the reference model, same FEM mesh pattern is applied. To analyse the ISSF at A, the body force method solution is used as the reference model. To analyse the ISSF at E, the reciprocal work contour integral method (RWCIM) solution is used as the reference model. Then, the two ISSFs are compared and discussed by varying the fibre embedded length . When is shorter, the singular stress at A is larger than the singular stress at E. When is longer, the singular stress at E is larger than the ISSF at A.

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Section: Issf At Point a Of Different In Lmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Intensity of singular stress fields of an embedded fibre under pull-out force

Chen

Zhang

Takaki

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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show abstract

“…However, these techniques cannot be applied to a resin-molded structure to solve the contact problem while simultaneously taking into account the effect of frictional force, adhesive force, and surface pressure. Many researchers have aimed to solve such problems by studying cohesive-zone models (5)- (10) , which unify damage and exfoliation at the interface according to the principles of damage mechanics. However, cohesive-zone models cannot serve as a standard model because of their complexity.…”

Section: Introductionmentioning

confidence: 99%

New Method of Analyzing Adhesion/Friction in Resin-molded Structures and its Application to Insulated Rods

Yamazaki

Izumi

Sakai

2010

JMMP

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The forces working at the contact interface between the metal and resin of a resin mold, which was made of metal cylinders covered with resin mold, were experimentally investigated. The forces discussed in this paper were modeled by friction force, adhesive force, and contact pressure based on residual stress. A new coefficient for adhesion was introduced by describing adhesion force. Moreover, FEM model of the forces acting on the contact interface was developed. The excellent agreement between the calculated and measured forces in applying the model to the design of an actual industrial product, i.e., an insulated rod, verified its accuracy.

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Interfacial characterisation of flax fibre-thermoplastic polymer composites by the pull-out test

Stamboulis¹,

Baillie

Schulz

1999

Angew. Makromol. Chem.

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The interface between flax fibres and thermoplastic polymer matrices has been investigated. Two types of flax fibres have been used: dew retted and upgraded Duralin fibres. The latter fibres have been treated by a novel treatment process for improved moisture and rot sensitivity. The apparent shear strength of dew‐retted and upgraded Duralin fibres embedded in high and low density polyethylene, polypropylene and maleic anhydride modified polypropylene, respectively, has been calculated from the maximum force measured from the pull‐out test using the Kelly‐Tyson equation. Higher apparent shear strength values have been measured in the case of high density polyethylene. An improvement in the interfacial shear strength by the use of upgraded flax fibres has not been clearly observed. The curves of pull‐out force versus displacement for all samples are typical of a brittle fracture mixed mode interface behaviour. The pull‐out test of flax fibre‐polymer matrices exhibit similar characteristics with the pull‐out test of synthetic fibre‐polymer systems.

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Interfacial crack propagation arising in single-fiber pull-out tests

Cited by 40 publications

References 21 publications

Intensity of singular stress fields of an embedded fibre under pull-out force

Intensity of singular stress fields of an embedded fibre under pull-out force

New Method of Analyzing Adhesion/Friction in Resin-molded Structures and its Application to Insulated Rods

Interfacial characterisation of flax fibre-thermoplastic polymer composites by the pull-out test

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