Interfacial evaluation of electrodeposited single carbon fiber/epoxy composites by fiber fracture source location using fragmentation test and acoustic emission

Park, Joung-Man; Kong, Jin-Woo; Kim, Jin-Won; Yoon, Dong‐Jin

doi:10.1016/j.compscitech.2003.08.006

Cited by 28 publications

(16 citation statements)

References 18 publications

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“…Employing the Fourier transform, the solution to the governing equations (2) and (3) can be expressed in terms of unknowns F mn and G m in the following form…”

Section: Solution For the Central Layermentioning

confidence: 99%

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Transverse cracking of orthotropic composite laminates: a fracture mechanics approach

Wang

Han

2009

Arch Appl Mech

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This research is concerned with the fracture mechanics of a laminated composite medium, which contains a central layer sandwiched by two outer layers. There is a periodic array of cracks in the central layer along the central axis of the medium. Fourier transform is used to reduce the problem to the solution of a system of dual integral equations, which are solved by the singular integral equation technique. Rigorous fracture mechanics analysis, which exactly satisfies all boundary conditions of the problem, is conducted. Numerical solutions for the crack tip field and the stress in the medium are obtained for various values such as crack length, crack spacing and layer thickness. Results are also given for the reduction of the equivalent Young's modulus of the laminate due to multiple cracking. The cases of axial extension and residual temperature change of the composite medium are accounted for.

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“…Employing the Fourier transform, the solution to the governing equations (2) and (3) can be expressed in terms of unknowns F mn and G m in the following form…”

Section: Solution For the Central Layermentioning

confidence: 99%

“…Many researchers have studied the fracture and predicted the strength and stiffness of the composite laminates (e.g., Refs. [1][2][3]). In particular, the stress field in angle-ply fiber-reinforced composite laminates is solved [4] for the case of multiple cracks.…”

Section: Introductionmentioning

confidence: 97%

Transverse cracking of orthotropic composite laminates: a fracture mechanics approach

Wang

Han

2009

Arch Appl Mech

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“…The effect of microfiber/matrix interface on mechanical properties of composites has been widely explored [1e7]. Several established methods, including the push-out test [6,8], the pull-out test [9e11], the microbond test [12,13], the microindentation test [14,15], and the fragmentation test [7,16,17], etc, have been employed to characterize the interfacial strength. For example, Rebillat et al used push-out tests to investigate the interface and interphase characteristics of strongly bonded twodimensitonal (2D) SiC/C/SiC composites [5].…”

Section: Introductionmentioning

confidence: 99%

Quantification and promotion of interfacial interactions between carbon nanotubes and polymer derived ceramics

Yang

Liang

Chen

et al. 2015

Carbon

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a b s t r a c tCarbon nanotubes (CNTs) have been considered an ideal reinforcement for light-weight and highstrength ceramic matrix composites. Understanding the interfacial properties between CNTs and the matrix is crucial for engineering the desired properties in such composites. Here in-situ pull-out experiments with a polymer derived ceramic (PDC) matrix are carried out with both pristine CNTs and CNTs coated with Al 2 O 3 (CNT/Al 2 O 3 ) produced by Atomic Layer Deposition (ALD), using micro-fabricated devices in a scanning electron microscope. This carefully designed comparative study makes it possible to better understand the interfacial interactions between CNTs and PDC matrices. The interfacial shear strength (IFSS) of CNT-PDC is 9.99 ± 2.84 MPa, while the IFSS of (CNT/Al 2 O 3 )/PDC with~3 nm Al 2 O 3 coating thickness is 14.52 ± 2.66 MPa, demonstrating a 45.3% improvement. The non-linear failure observed with the coated CNTs is also indicative of energy dissipation mechanisms that promote toughening in ceramic matrix composites. The improved properties in (CNT/Al 2 O 3 )/PDC are believed to originate from increased surface roughness, which leads to mechanical interlocking at the interface during the pull-out process. The combination of special interlayer structures such as ALD Al 2 O 3 and strong CNTs opens up interesting opportunities for improving the mechanical properties of ceramic nanocomposites reinforced by CNTs.

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“…Acoustic emission (AE) signals are widely used to monitor a variety of failure modes for composite materials including matrix cracking, micro-crack initiation and growth, fracture of inclusions in a material, debonding, plastic deformation etc [1][2][3][4][5][6][7][8][9]. However, there are no studies correlating AE signals with the failure mechanisms in both particulate filled thermoset and thermoplastic coatings.…”

Section: Introductionmentioning

confidence: 99%

Characterization of acoustic emission signals from particulate filled thermoset and thermoplastic polymeric coatings in four point bend tests

Mellor

2011

Materials Letters

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Four point bend tests were conducted on two previously characterized particulate filled thermoplastic and thermoset polymeric coatings, the acoustic emission (AE) method being utilized to monitor the damage progress during the tests. Different damage mechanisms operating in the polymeric coatings can be recognized by the different amplitude range of the AE signals emitted. AE can be used to assess the relative strength of particle/matrix bonds in particulate filled polymeric coatings.

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Interfacial evaluation of electrodeposited single carbon fiber/epoxy composites by fiber fracture source location using fragmentation test and acoustic emission

Cited by 28 publications

References 18 publications

Transverse cracking of orthotropic composite laminates: a fracture mechanics approach

Transverse cracking of orthotropic composite laminates: a fracture mechanics approach

Quantification and promotion of interfacial interactions between carbon nanotubes and polymer derived ceramics

Characterization of acoustic emission signals from particulate filled thermoset and thermoplastic polymeric coatings in four point bend tests

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