Impact fatigue, multiple and repeated low-velocity impacts on FRP composites: A review

Sadighi, Mojtaba; Alderliesten, R.C.

doi:10.1016/j.compstruct.2022.115962

Cited by 56 publications

(16 citation statements)

References 125 publications

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“…The low-velocity impact response of laminates has been the focus of many recent studies, especially related to a single hit [4][5][6][7][8]. Although repeated impacts are not uncommon in real-world applications of composites [9,10], there are not many studies in the literature addressing that, either numerically-or experimentally-based, as most focus on multiple hits at the same point [11]. The studies on the repeated impact behavior of composites mostly concern repeated impact at the same location by considering different impactor or target features, such as impactor geometry [12][13][14] and mass [15], reinforcement type [16][17][18][19], laminate thickness [17,20], and stacking sequence [21,22].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study of the Influence of Pre-Existing Impact Damage on the Low-Velocity Impact Response of CFRP Panels

et al. 2023

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This paper presents an experimental and numerical investigation on the influence of pre-existing impact damage on the low-velocity impact response of Carbon Fiber Reinforced Polymer (CFRP). A continuum damage mechanics-based material model was developed by defining a user-defined material model in Abaqus/Explicit. The model employed the action plane strength of Puck for the damage initiation criterion together with a strain-based progressive damage model. Initial finite element simulations at the single-element level demonstrated the validity and capability of the damage model. More complex models were used to simulate tensile specimens, coupon specimens, and skin panels subjected to low-velocity impacts, being validated against experimental data at each stage. The effect of non-central impact location showed higher impact peak forces and bigger damage areas for impacts closer to panel boundaries. The presence of pre-existing damage close to the impact region leading to interfering delamination areas produced severe changes in the mechanical response, lowering the impact resistance on the panel for the second impact, while for non-interfering impacts, the results of the second impact were similar to the impact of a pristine specimen.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study of the Influence of Pre-Existing Impact Damage on the Low-Velocity Impact Response of CFRP Panels

et al. 2023

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“…The repeated LVI has been also addressed in the literature 13–18 . For example, Liao et al 13 studied the damage accumulation in laminated composites under the constant‐energy repeated LVI at the same position.…”

Section: Introductionmentioning

confidence: 99%

“…The repeated LVI has been also addressed in the literature. [13][14][15][16][17][18] For example, Liao et al 13 studied the damage accumulation in laminated composites under the constant-energy repeated LVI at the same position. They used force-time and force-displacement curves, the delamination area detected by the ultrasonic C-scan, and the absorbed energy to trace the damage evolution after each impact.…”

Section: Introductionmentioning

confidence: 99%

The effect of alternating the sequence of variable‐energy repeated impact on the residual strength and damage evolution of composite laminates

Saeedifar

Saleh

2023

Polymer Composites

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This article investigates the effect of alternating the sequence of variable‐energy repeated low‐velocity impact on the residual strength of carbon fiber reinforced polymer (CFRP) laminates. Quasi‐isotropic CFRP specimens were impacted using three impact energy levels, that is, Low (L), Medium (M), and High (H). Every group, out of three groups in total, was impacted consecutively using one of three sequences: LMH, HML, and MLH. Delamination and its growth after each impact was quantified using a phased‐array ultrasonic probe. The impacted specimens were then subjected to compression after impact loading with in situ acoustic emission (AE) and digital image correlation (DIC) measurement. Mechanical results showed that the residual strength of the specimens was not significantly affected by alternating the impacts sequence. However, the AE, sentry function and DIC results revealed that the impact‐induced damage in HML configuration was activated much earlier than MLH, and the damage induced in LMH configuration was activated later than both.

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“…Fiber-reinforced composites have been widely used in aerospace, automotive, defense and energy industries due to their lightweight, high specific strength and high specific stiffness [ 1 , 2 , 3 ]. The composites in service are likely to be exposed to repeated impact loads such as hail impact and the impact of stones thrown by the tires of a plane during landing [ 4 , 5 ]. Although a single low-velocity impact may not externally damage the material, the long-term effect of repeated impacts will accumulate the damage, which can degrade the material performance and even lead to the failure of an apparently undamaged structure [ 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response and Damage Accumulation of Laminated Composites under Repeated Low-Velocity Impacts

2023

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The mechanical response and damage accumulation of carbon-fiber-reinforced composite laminates subjected to repeated low-velocity impacts were experimentally investigated. The repeated impact tests were conducted on [902/−452/02/452]S quasi-isotropic and [902/02]2S cross-ply composite laminates under 16.8 J impact energy, respectively. For each impact, impact responses such as force-time, force-displacement and energy-time curves were recorded. The trends of peak force, maximum central displacement, energy absorption rate and bending stiffness with the increasing impact number were summarized, and the maximum number of repeated impacts corresponded to the occurrence of penetration events. The results showed that the delamination initiation, fiber breakage and penetration were the three typical characteristics describing the damage evolution of the repeated impacts. The damage accumulation of both the laminates was characterized by employing appropriate damage indices. By contrast, the quasi-isotropic laminates had higher impact resistance and damage tolerance, and their damage accumulation was relatively slower.

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Impact fatigue, multiple and repeated low-velocity impacts on FRP composites: A review

Cited by 56 publications

References 125 publications

Experimental and Numerical Study of the Influence of Pre-Existing Impact Damage on the Low-Velocity Impact Response of CFRP Panels

Experimental and Numerical Study of the Influence of Pre-Existing Impact Damage on the Low-Velocity Impact Response of CFRP Panels

The effect of alternating the sequence of variable‐energy repeated impact on the residual strength and damage evolution of composite laminates

Dynamic Response and Damage Accumulation of Laminated Composites under Repeated Low-Velocity Impacts

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