An analytical scaling approach for low-velocity impact on composite structures

Bogenfeld, Raffael Marius; Kreikemeier, Janko; Wille, Tobias

doi:10.1016/j.compstruct.2017.12.012

Cited by 27 publications

(19 citation statements)

References 21 publications

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“…Although no indentation is observed on the structure surface, many matrix cracks, large delamination areas, and even fiber fracture may form inside the laminate. This hidden damage will seriously reduce the compression performance of the laminate structure 7–9 . Carbon fiber composites are more likely to be damaged in long‐term service environments, which may pose a safety hazard.…”

Section: Introductionmentioning

confidence: 99%

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Study on the damage behavior of carbon fiber composite after low‐velocity impact under hygrothermal aging

Zhou

Jia

et al. 2020

J of Applied Polymer Sci

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In this article, T800 carbon fiber/epoxy resin composite was subjected to hygrothermal aging. By analyzing the mass change, surface morphology before and after aging, infrared spectra, and dynamic mechanical properties, the effect of hygrothermal aging on the composite properties was studied. The hygrothermal aging of the composite after low‐velocity impact, the effects of environmental factors on the damaged area, and the post‐impact compression properties of composites were studied. The results showed that the saturation moisture absorption rate of the composite after aging (71°C constant temperature) was 0.88%. Upon increasing the impact energy, an indentation appeared before the inflection point at 35 J. When the impact energy was less than 15 J, aging did not affect invisible damage. Above this, the damaged area and number of internal cracks and defects in the composite were increased. After aging, the compressive strength of composite laminates with impact damage decreased obviously. During the aging stage, the residual compressive strength of the sample was the lowest in the moisture saturated state, and hygrothermal aging had little effect on the compression failure mode after impact.

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Section: Introductionmentioning

confidence: 99%

“…This hidden damage will seriously reduce the compression performance of the laminate structure. [7][8][9] Carbon fiber composites are more likely to be damaged in long-term service environments, which may pose a safety hazard.…”

mentioning

confidence: 99%

Study on the damage behavior of carbon fiber composite after low‐velocity impact under hygrothermal aging

Zhou

Jia

et al. 2020

J of Applied Polymer Sci

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“…Carbon-fibre reinforced composite (CFRC) structures are widely used in the aerospace, automotive and marine industries, due to their effective fire and corrosion resistance, acoustic insulation, high stiffness/weight ratios, construction flexibilities and lightweight advantages [1,2,3,4]. In several construction requirements, two or more such composite laminates are bonded with epoxy adhesives and debonds can occur at such adhesive interfaces, due to temperature fluctuations, improper handling, impact, fatigue and ageing [5,6,7,8,9].…”

Section: Introductionmentioning

confidence: 99%

Nondestructive Analysis of Debonds in a Composite Structure under Variable Temperature Conditions

Sikdar

Kundu

Jurek

et al. 2019

Sensors

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This paper presents a nondestructive analysis of debonds in an adhesively-bonded carbon-fibre reinforced composite structure under variable temperature conditions. Towards this, ultrasonic guided wave propagation based experimental analysis and numerical simulations are carried out for a sample composite structure to investigate the wave propagation characteristics and detect debonds under variable operating temperature conditions. The analysis revealed that the presence of debonds in the structure significantly reduces the wave mode amplitudes, and this effect further increases with the increase in ambient temperature and debond size. Based on the debond induced differential amplitude phenomenon, an online monitoring strategy is proposed that directly uses the guided wave signals from the distributed piezoelectric sensor network to localize the hidden debonds in the structure. Debond index maps generated from the proposed monitoring strategy show the debond identification potential in the adhesively-bonded composite structure. The accuracy of the monitoring strategy is successfully verified with non-contact active infrared-thermography analysis results. The effectiveness of the proposed monitoring strategy is further investigated for the variable debond size and ambient temperature conditions. The study establishes the potential for using the proposed damage index constructed from the differential guided wave signal features as a basis for localization and characterization of debond damages in operational composite structures.

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“…Low-velocity response, from the viewof designing, is of particular important criterion inthe use of composite structures [1]. Nowadays, a series of investigations on 3D-textile structures in terms of the lowvelocity response and theoretical analyses have been conducted recently.…”

Section: Introductionmentioning

confidence: 99%

Low-velocity impact response of 3D polyurethane resin composites reinforced with spacer fabrics

Chen

Shi

2019

Industria Textila

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This research aimed to investigate the low-velocity response of polyurethane-based composites. Three warp-knitted spacer fabrics produced on a double-needle bar warp knitting machine by vary different surface structures were used as the reinforcement element. Two Micro-balloons were added into the composites as well. A new type of resin named polyurethane resin was involved for fabricating the composites. Accordingly, the impact behaviors of composites were evaluated properly under the impact velocity of 1 m/s and 2 m/s, respectively. The findings obtained illustrate that the composites possess excellent low-velocity impact properties and the impact resistance capacities are significantly affected by the fabric surface structures and the types of Micro-balloon, indicating that their impact energy absorbability can be tailored to meet the specific end-use requirements by varying the structural parameters.

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An analytical scaling approach for low-velocity impact on composite structures

Cited by 27 publications

References 21 publications

Study on the damage behavior of carbon fiber composite after low‐velocity impact under hygrothermal aging

Study on the damage behavior of carbon fiber composite after low‐velocity impact under hygrothermal aging

Nondestructive Analysis of Debonds in a Composite Structure under Variable Temperature Conditions

Low-velocity impact response of 3D polyurethane resin composites reinforced with spacer fabrics

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