Modelling the effect of projectile hardness on the impact response of a woven carbon-fibre reinforced thermoplastic-matrix composite

Liu, Haibao; Li, Jun; Ding, Yunfeng; Jin, Zheng; Luo, Lilong; Kong, Xiangshao; Zhou, Jin; Blackman, B.R.K.; Kinloch, A. J.; Dear, John P.

doi:10.1016/j.ijlmm.2020.05.005

Cited by 4 publications

(4 citation statements)

References 32 publications

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“…12,13,[15][16][17][18][19] However, studies have mainly focused on understanding the nonhole tension/compression (NHT and NHC, respectively), flexural, and interlaminar fracture toughness and impact damage behavior of CFRTPs. 5,[20][21][22][23] To the best of our knowledge, detailed experimental or numerical studies of the open-hole tensile/ compressive properties and the fracture behavior of CFRTPs remain lacking. Liu et al 14 conducted experimental and numerical studies of the compressive failure of open-hole CFRTPs with a woven fabric through combined loading compression (CLC) tests and finite element analysis (FEA) with the continuum damage mechanics (CDM) model and demonstrated that the numerical simulation results agree reasonably well with the experimental results.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on open-hole tension/compression properties of carbon-fiber-reinforced thermoplastic laminates

Shirasu

Tsuyuki

Higuchi

et al. 2022

Journal of Composite Materials

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The stress-strain responses and damage initiation/propagation mechanisms of T700G/LM-PAEK, an open-hole carbon-fiber-reinforced thermoplastic were investigated experimentally and numerically. To obtain the mechanical properties necessary for numerical simulations, uniaxial tensile/compressive, double cantilever beam, and end notched flexure tests were conducted. T700G/LM-PAEK was found to have comparable or higher Young’s modulus, strength, and interlaminar fracture toughness relative to thermoset CFRPs with carbon fiber of a similar grade. These superior mechanical properties are mainly attributable to the higher toughness and ductility of the thermoplastic resin. The interfacial fracture toughnesses were evaluated by finite element analysis with the cohesive zone model to determine the interlaminar fracture toughnesses for crack initiation and propagation. Based on the above experimental and numerical results, the stress strain response and damage evolution of open-hole specimens were analyzed by a quasi-3D extended finite element method (XFEM) and compared with the experimental results. The computational model with the elastoplastic constitutive law provided an accurate prediction of the stress-strain response in both open-hole tension and compression (OHT and OHC, respectively), suggesting that the elastoplastic constitutive law should be considered in XFEM to guarantee the accuracy of strength prediction for both OHT and OHC. The OHT model showed that the Weibull criterion was satisfied without any delamination at the failure strain, corresponding to the brittle failure mode due to fiber breakage. For the OHC simulation, the damage initiation of 0°-ply kinking was observed at 88% of the peak stress. These predicted damage mechanisms agreed reasonably well with the experimental observations.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on open-hole tension/compression properties of carbon-fiber-reinforced thermoplastic laminates

Shirasu

Tsuyuki

Higuchi

et al. 2022

Journal of Composite Materials

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“…The Instron Ceast ® 9350 drop-weight machine was presented in Figure 2A, the diameter of the rigid, metallic impactor is 16 mm with a weight of 15.482 kg. The impact energy (15,30,45, and 60 J) was adjusted by changing the height of the impactor to get different damage results. The delamination caused by the impact was observed using PVA SAM ® 400 ultrasound scanning equipment to identify the damage area, and the crosssection of typical test specimens was observed using HITACHI ® SU8010 scanning electron microscope in order to determine the damage patterns of the impact specimens.…”

Section: Methodsmentioning

confidence: 99%

“…Grasso et al [ 14 ] presents an experimental investigation of the behavior of woven glass and carbon fiber composite laminates in a matrix of fire retardant resin under the low‐velocity impact, and summarized the characteristics of woven composites and the effects of different fibers. Dear et al [ 15 ] investigated the effects of the hardness of a projectile impacting a woven carbon‐fiber‐reinforced thermoplastic‐matrix composite, and concluded that the woven CF/PEEK composite suffered a higher out‐of‐plane displacement and more impact‐induced damage when impacted by the relatively hard projectile than by the soft projectile. Rahmani et al [ 16 ] investigated the effect of impactor shape and fiber stacking sequences of hybrid Kevlar/basalt fiber reinforced epoxy composites on the low‐velocity impact properties.…”

Section: Introductionmentioning

confidence: 99%

Low‐velocity impact damage and compression after impact behavior of CF/PEEK thermoplastic composite laminates

Liu

Chen

et al. 2022

Polymer Composites

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Impact resistance and damage tolerance are of great significance in the design of composite structures. This study researched the damage and failure mechanism of carbon fiber reinforced poly-ether-ether-ketone (CF/PEEK) composite laminates under the low-velocity impact (LVI) and compression after impact (CAI) loading conditions. The test included four impact energy levels (15, 30, 45, and 60 J) and compared the effect of two different stacking sequences ([0 /90 ] 8S and [0 /45 /90 /À45 ] 4S ) on performance. The results shown that the peak impact force of the two different stacking sequences increased from 7.8 kN/8.3 kN-11.4 kN/13.7 kN, and the CAI strength decreased from 370.5 MPa/419.3 MPa to 212.8 MPa/232.5 MPa, respectively. Nondestructive testing of low-velocity impact specimens by ultrasonic C-Scan was employed to investigate structural damage. Digital image correlation (DIC) was employed to perform full-field displacement measurements for the CAI experiment. The cross-section of typical specimen was observed using a scanning electron microscope (SEM) to determine the failure mode of the specimen. In addition, a 3D damage model based on continuum damage mechanics was established, with the consideration of the interlaminar delamination damage and intralaminar damage. Compared with the experimental results, the errors of the numerical simulation of the peak impact force, impact energy absorption, and CAI strength are 3.8%-14.8%, 3.7%-6.9%, and 2.2%-6.7%, respectively, which verifies the validity and rationality of the model. Furthermore, the numerical model and interpolation function were used to predict the ultimate residual strength.

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“…Lastly, Liu at al. [48] used the same model to consider both hard and soft high-velocity impacts to consider the effect of the projectile hardness on the impact response of the composite. Since the two types of projectiles behave differently upon impact, it was required to create two simulations.…”

Section: Soft Impactmentioning

confidence: 99%

Impact Testing on the Pristine and Repaired Composite Materials for Aerostructures

Hall

Brooks

et al. 2023

Applied Mechanics

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Aircraft technologies and materials have been developing and improving drastically over the last hundred years. Over the last three decades, an interest in the use of composites for external structures has become prominent. For this to be possible, thorough research on the performance of composite materials, specifically the impact performance, have been carried out. For example, research of impact testing for pristine carbon-reinforced epoxy composites mentions matrix cracks, fibre fracture, and delamination as the failure modes that require monitoring. In addition, thorough testing has been carried out on composites repaired with an adhesive bond to observe the effects of conditioning on the adhesively bonded repair. The results suggest there are no major changes in the adhesive under the testing condition. By reviewing the impact testing on the pristine and repaired composite materials for aerostructures, this paper aims to illustrate the main findings and also explore the potential future work in this research scope.

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Modelling the effect of projectile hardness on the impact response of a woven carbon-fibre reinforced thermoplastic-matrix composite

Cited by 4 publications

References 32 publications

Experimental and numerical study on open-hole tension/compression properties of carbon-fiber-reinforced thermoplastic laminates

Experimental and numerical study on open-hole tension/compression properties of carbon-fiber-reinforced thermoplastic laminates

Low‐velocity impact damage and compression after impact behavior of CF/PEEK thermoplastic composite laminates

Impact Testing on the Pristine and Repaired Composite Materials for Aerostructures

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