Impact damage of carbon fiber polymer–matrix composites, studied by electrical resistance measurement

Wang, Shoukai; Chung, D.D.L.; Chung, Jou-Ku

doi:10.1016/j.compositesa.2005.03.005

Cited by 110 publications

(66 citation statements)

References 16 publications

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“…Typical examples of the former are carbon nanotube-filled composites, which offer both sensing and actuation functionalities [2,3]. On the other hand, a carbon-fibre reinforced polymer (CFRP) can be regarded as a self-functioning composite, as it offers an inherent delamination detection function through electrical resistance (ER) or electric potential measurements [4][5][6], without the need of embedding additional "smart" phases in the baseline material.…”

Section: Introductionmentioning

confidence: 99%

On the delamination self-sensing function of Z-pinned composite laminates

Zhang

Yasaee

Hallett³

et al. 2016

Composites Science and Technology

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This paper investigates for the first time the usage of through-thickness reinforcement for delamination detection in self-sensing composite laminates.Electrically conductive T300/BMI Z-pins are considered in this study. The through-thickness electrical resistance is measured as the delamination self-sensing variable, both for conductive and non-conductive laminates. The Z-pin ends are connected to a resistance measurement circuit via electrodes arranged on the surface of the laminate. The delamination self-sensing function enabled by conductive Z-pins is characterised for Mode I/II delamination bridging, using single Z-pin coupons.Experiment results show that, if the through-thickness reinforced laminate is electrically conductive, the whole Z-pin pull-out process associated with delamination bridging can be monitored. However, for a non-conductive laminate, delamination bridging may not be sensed after the Z-pin is pulled out from one of the surface electrodes. Regardless of the electrical properties of the reinforced laminate, the through-thickness electrical resistance is capable of detecting Mode II bridging, albeit there exists an initial "blind spot" at relatively small lateral deformation. However, the Z-pin rupture can be clearly detected as an abrupt resistance increase. This study paves the way for exploring multi-functional applications of through-thickness reinforcement.

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Section: Introductionmentioning

confidence: 99%

On the delamination self-sensing function of Z-pinned composite laminates

Zhang

Yasaee

Hallett³

et al. 2016

Composites Science and Technology

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“…There have been a number of studies on the electrical characterization of carbon fiber polymer matrix composites conducted in the past [1][2][3][4][5][6][7][8][9][10][11][12][13] that attempted to monitor changes in the electrical resistance and electric field that occur as a result of mechanical damage. Two main techniques have been employed to sense impact damage: the potential method and the resistance method.…”

Section: Introductionmentioning

confidence: 99%

“…In most of the damage sensing via the one-dimensional resistance method research, narrow specimens with widths of 10 or 12 mm have been used [4,[6][7][8]11,12]. Such specimen widths have been used to obtain large resistance measurements and high sensitivity.…”

Section: Introductionmentioning

confidence: 99%

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79 Experimental Assessment of Single and Cumulative Impact Damage in Carbon Fiber Polymer Matrix Composites Using Electrical Resistance Measurements

McANDREW¹,

Zhupanska²

2015

JMC

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“…Several composite systems have been examined in the past, using the self-sensing principle of electrical resistance. Carbon fiber-reinforced polymer [9][10][11][12][13][14][15][16][17][18][19] , SiC fiber-reinforced polymer [20][21] , and carbon fiber-reinforced carbon 15 are a few examples of composites that show a change in electrical resistance upon mechanical loading and damage. For the case of fiber-reinforced polymer, conductive fibers are inside an insulating matrix.…”

Section: Introductionmentioning

confidence: 99%

Detecting cracks in ceramic matrix composites by electrical resistance

Smith

Gyekenyesi

2011

SPIE Proceedings

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The majority of damage in SiC/SiC ceramic matrix composites subjected to monotonic tensile loads is in the form of distributed matrix cracks. These cracks initiate near stress concentrations, such as 90 o fiber tows or large matrix pores and continue to accumulate with additional stress until matrix crack saturation is achieved. Such damage is difficult to detect with conventional nondestructive evaluation techniques (immersion ultrasonics, x-ray, etc.). Monitoring a specimen"s electrical resistance change provides an indirect approach for monitoring matrix crack density. SylramiciBN fiber-reinforced SiC composites with a melt infiltrated (MI) matrix were tensile tested at room temperature.Results showed an increase in resistance of more than 500% prior to fracture, which can be detected either in situ or post-damage. A relationship between resistance change and matrix crack density was also determined.

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Impact damage of carbon fiber polymer–matrix composites, studied by electrical resistance measurement

Cited by 110 publications

References 16 publications

On the delamination self-sensing function of Z-pinned composite laminates

On the delamination self-sensing function of Z-pinned composite laminates

79 Experimental Assessment of Single and Cumulative Impact Damage in Carbon Fiber Polymer Matrix Composites Using Electrical Resistance Measurements

Detecting cracks in ceramic matrix composites by electrical resistance

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