Experimental investigation of the axial crushing behavior of aluminum/CFRP hybrid tubes with circular-hole triggering mechanism

Cetin, Erhan; Baykasoğlu, Adil; Erdin, M. Emin; Baykaşoğlu, Cengiz

doi:10.1016/j.tws.2022.110321

Cited by 28 publications

(12 citation statements)

References 65 publications

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“…After the Taguchi experimental design has been accomplished and the experimental response for each experiment has been counted, the signal-to-noise ratio (SNR), which measures the magnitude of the mean of a process compared to its variation, is used to assess the response performance according to the response characteristics. In general, for a response with ''larger-the-better (LTB)'' characteristic, the corresponding SNR could be calculated using equation ( 27), while for a response with ''smaller-the-better (STB)'' characteristic, the corresponding SNR could be calculated using equation (28) 38 :…”

Section: Taguchi-gra Methodsmentioning

confidence: 99%

“…36,37 Compared with many other proposed optimization methods, the Taguchi method, which adopts orthogonal experimental design and processes experimental data based on signal-to-noise ratio (SNR) that to be maximized, is relatively more efficient and simple to assess robustness of experiments and effects of factors on responses, as well as to explore optimal combination of factor levels. 38 Nevertheless, the traditional Taguchi method is normally limited to handling single-objective optimization issues, which is not suitable to address multi-objective crashworthiness optimization of FGCST in the present study. However, this limitation could be eliminated by coupling Taguchi method with grey relational analysis (GRA), due to GRA could convert multiple responses to a single response called grey relational grade (GRG), which represents the relative closeness of a candidate to the ideal referential alternative and generally is “larger-the-better (LTB).” Consequently, this paper carries out multi-objective crashworthiness optimization of FGCST under multi-angle crushing loading using Taguchi method coupled with grey relational analysis (GRA).…”

Section: Multi-objective Crashworthiness Optimization Of Fgcstmentioning

confidence: 96%

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Crashworthiness design of novel CFRP functionally-graded conical square structures with variable circumscribed diameters

Xiong,

Wen,

Wang

et al. 2024

Advances in Mechanical Engineering

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Carbon fiber reinforced plastic (CFRP) thin-walled structures have been widely acknowledged as superior energy absorbers due to comprehensive advantages on crashworthiness and light weight. However, few studies have been reported concerning CFRP thin-walled structures with nonlinearly variable sectional dimensions along the longitudinal direction. Hence, in the present study, a novel CFRP functionally-graded conical square thin-walled structure with variable circumscribed diameter (functionally-graded conical square tube, FGCST) is proposed and comprehensively investigated. Specifically, finite element (FE) models of FGCST under multi-angle crushing loading are first built and validated. Second, a comprehensive crashworthiness comparison among the FGCST, the conventional CFRP conical square tube (CST) and the CFRP straight square tube (SST) under multi-angle crushing loading is executed to explore the relative merits of FGCST over others. Third, a parameter study is implemented on FGCST to explore the action laws of its structural parameters on its overall crashworthiness under multi-angle crushing loading. Finally, the FGCST is multi-objective crashworthiness optimized for maximizing overall specific energy absorption (SEAθ) and minimizing overall peak crushing force (PCF0) simultaneously through Taguchi method coupled with grey relational analysis (GRA). The optimized FGCST obtains 6.06% higher of SEAθ and meanwhile 40.58% lower of PCF0 compared with the baseline design, thus demonstrating good potential as a superior candidate for vehicle collision energy absorbers.

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Section: Taguchi-gra Methodsmentioning

confidence: 99%

Section: Multi-objective Crashworthiness Optimization Of Fgcstmentioning

confidence: 96%

Crashworthiness design of novel CFRP functionally-graded conical square structures with variable circumscribed diameters

Xiong,

Wen,

Wang

et al. 2024

Advances in Mechanical Engineering

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“…7,8 Fortunately, the combination of metallic structures with low cost and good plasticity with composite structures has allowed the production of CFRP/Al hybrid tubes through wrapping or winding technology, which provides a dependable solution for the wide range applications of composites. [9][10][11][12] Recently, extensive research has been conducted on the crashworthiness of the hybrid tube. 8,13,14 Yang et al 15 studied the damage modes of CFRP/Al hybrid tubes under lateral loads using finite element method based on nonlinear progressive damage theory and discussed the effects of wrap angles and aluminum thicknesses on the crashworthiness, further revealed the energy-absorbing mechanism of hybrid tubes with different aluminum thicknesses.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, it is prone to showing brittle fracture behavior when subjecting to high strain loading 7,8 . Fortunately, the combination of metallic structures with low cost and good plasticity with composite structures has allowed the production of CFRP/Al hybrid tubes through wrapping or winding technology, which provides a dependable solution for the wide range applications of composites 9–12 . Recently, extensive research has been conducted on the crashworthiness of the hybrid tube 8,13,14 .…”

Section: Introductionmentioning

confidence: 99%

Failure behavior and crashworthiness characteristic of repaired composites‐metal hybrid tubes by acoustic emission

Su,

Zhang,

et al. 2023

Polymer Composites

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In this study, the transverse indentation test was applied to simulate the damage caused by impact to the carbon fiber‐reinforced plastics (CFRP)/Al hybrid tube, and composites patch repair technology was used to repair the hybrid tube with different damage degrees. The effects of width and ply‐number of the patch on failure behavior and crashworthiness under axial load were investigated. It was concluded that the technology can effectively reduce stress concentration around the indentation and then improve compressive strength. Increasing the ply‐number of the patch can mitigate the failure mode of med‐length collapse of the hybrid tube and can effectively improve the crashworthiness indicators. The optimal repair strategy increased energy absorption by 54.02% and mean crushing force by 53.66%. However, the improvement of failure behavior by the ply‐number is limited by patch width. Acoustic emission and infrared thermography technologies were used to further analyze the damage characteristics and damage evolution of the hybrid tubes in pre‐crushing stage. It was found that the crushing form of the middle collapse tended to produce a more intense acoustic emission response and higher temperature change than that of the end crushing. In engineering practice, it provides a valuable reference for the reasonable repair of composite tubular structures and their hybrid structures.Highlights Composite repair technology is used for the repair of CFRP/Al hybrid tubes. The effects of ply‐number and width of patch on repair quality are studied. The technology can effectively improve residual crashworthiness of structure. The improvement of failure behavior by ply‐number is limited by patch width. The damage behavior of various crushing forms can be revealed by AE and IR.

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“…On the other hand, there are many applications where different types of materials are used together and in such cases using adhesive bonds alone can be a problem. For instance, metal and composite materials are often used together in the automotive and aerospace industries [9][10][11][12]. For these reasons, different joining methods are used to bring together different types of materials.…”

Section: Introductionmentioning

confidence: 99%

Tensile Strength of Adhesively Bonded and Hybrid (Bonded/Riveted) Dissimilar Single-Lap Joints

Cetin

2022

International Journal of Automotive Science and Technology

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Glass fiber-reinforced composites are commonly employed as structural materials in many fields. In addition, glass fiber-reinforced composites are frequently used with metals, particularly in the automotive and aerospace industry. In this context, the tensile strengths of simple and hybrid single-lap joints having similar (i.e., aluminum/aluminum and composite/composite) and dissimilar (i.e., aluminum/composite) plates were investigated experimentally in this study. At this point, 6061 aluminum alloy and E-glass/epoxy composite plates were used as the adherends and Araldite 2014-1 was used as the adhesive. The composite adherends produced using the vacuum infusion technique consist of E-glass/epoxy laminates with [0°/90°/+45°/−45°]6 stacking sequence. Two different types of joints (i.e., adhesively bonded and bonded/riveted) were employed for similar and dissimilar joints. In addition, both 3-rivet and 4-rivet joints were used in bonded/riveted joints. The results revealed that the strength of the joints could be considerably increased with the addition of rivets to the adhesively bonded joints. In particular, the results showed that the strength value of the bonded/4-riveted joint is 5.7 times higher than the adhesively bonded joints.

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Experimental investigation of the axial crushing behavior of aluminum/CFRP hybrid tubes with circular-hole triggering mechanism

Cited by 28 publications

References 65 publications

Crashworthiness design of novel CFRP functionally-graded conical square structures with variable circumscribed diameters

Crashworthiness design of novel CFRP functionally-graded conical square structures with variable circumscribed diameters

Failure behavior and crashworthiness characteristic of repaired composites‐metal hybrid tubes by acoustic emission

Tensile Strength of Adhesively Bonded and Hybrid (Bonded/Riveted) Dissimilar Single-Lap Joints

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