Realistic Stacking Sequence Optimisation of an Aero-Engine Fan Blade-Like Structure Subjected to Frequency, Deformation and Manufacturing Constraints

Canale, Giacomo; Andrews, S. J.; Rubino, Felice; Maligno, Angelo; Citarella, Roberto

doi:10.2174/1874155x01812010151

Cited by 6 publications

(6 citation statements)

References 16 publications

(8 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Let the composite fan blade-like dovetail root be taken as an example. The model built in Canale et al (2018) can be used. The disc to blade root interaction has been modelled with a "surface to surface" contact.…”

Section: Discussionmentioning

confidence: 99%

“…Composite materials have been widely used in the aerospace industry in the latest 20 years. Organic matrix composite materials, in fact, offer some advantages when compared to metals such as their strength/weight ratio (Reddy, 1994), the opportunity to directionally tailor their stiffness and potentially exploit anisotropy (Shirk et al , 1986; Canale et al , 2018). Some challenges still remain when designing composite structures such as impact resistance (Cui et al , 2019) and electric conductivity (Kumar et al , 2018).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Moisture absorption in thick composite plates: modelling and experiments

Canale

Kinawy

Sathujoda

et al. 2019

MMMS

Self Cite

View full text Add to dashboard Cite

Purpose When a thick structure is, on the contrary, subjected to moisture absorption, a fairly long time may be needed to reach full saturation. It is, therefore, important to understand and predict the areas of complex composite structures that are more prone to saturation. The material knock-down factors (proportional to the moisture content) may be applied only to these zones, in order to obtain a less pessimistic structural response prediction. The purpose of this paper is to investigate an FE diffusion model that was used to validate the absorption testing results of thick carbon epoxy laminates. Design/methodology/approach The experimental results were validated by using a diffusion model in Abaqus FE code. Findings The absorption results of three 15 mm thick carbon epoxy laminates are presented and reproduced via a mass diffusion model. The laminates were conditioned at 70°C and 85 per cent relative humidity in a moisture chamber. Areas more prone to saturation have been predicted by the FE model and the moisture content in the non-saturated areas has been calculated. Practical implications The practical implications of the absorption model are discussed on an example of an aero-engine fan blade-like structure. Originality/value Validation of thick panels’ absorption data is an important point of novelty of this paper, given the lack of experimental and modelling validation in the open literature.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Moisture absorption in thick composite plates: modelling and experiments

Canale

Kinawy

Sathujoda

et al. 2019

MMMS

Self Cite

View full text Add to dashboard Cite

show abstract

“…Composite structures have been widely used in engineering applications because distinctive mechanical properties and versatile functionalities can be achieved by tuning the composition and arrangement of just two or more base materials [ 14 ]. For example, Canale et al presented a method to optimize the stacking sequence of a composite fan blade [ 15 ]; Herencia et al presented a method to optimize a composite wing [ 16 ]. However, conventional methods for manufacturing composites have been limited to layup processes that create laminate composites by stacking layers of plies and resins [ 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Designing Bioinspired Composite Structures via Genetic Algorithm and Conditional Variational Autoencoder

2023

View full text Add to dashboard Cite

Designing composite materials with tailored stiffness and toughness is challenging due to the massive number of possible material and geometry combinations. Although various studies have applied machine learning techniques and optimization methods to tackle this problem, we still lack a complete understanding of the material effects at different positions and a systematic experimental procedure to validate the results. Here we study a two-dimensional (2D) binary composite system with an edge crack and grid-like structure using a Genetic Algorithm (GA) and Conditional Variational Autoencoder (CVAE), which can design a composite with desired stiffness and toughness. The fitness of each design is evaluated using the negative mean square error of their predicted stiffness and toughness and the target values. We use finite element simulations to generate a machine-learning dataset and perform tensile tests on 3D-printed specimens to validate our results. We show that adding soft material behind the crack tip instead of ahead of the tip tremendously increases the overall toughness of the composite. We also show that while GA generates composite designs with slightly better accuracy (both methods perform well, with errors below 20%), CVAE takes considerably less time (~1/7500) to generate designs. Our findings may provide insights into the effect of adding soft material at different locations of a composite system and may also provide guidelines for conducting experiments and Explainable Artificial Intelligence (XAI) to validate the results.

show abstract

“…This problem is common in the field of high-end electronic packaging and testing equipment, and it is a technical bottleneck restricting the development of related processes, which has resulted in extensive research. Delamination is also a common problem in many other domains such as the aerospace industry when dealing with strain measurement instrumentation or composite delamination, even in rotating parts [9].…”

Section: Introductionmentioning

confidence: 99%

Coupled Excitation Strategy for Crack Initiation at the Adhesive Interface of Large-Sized Ultra-Thin Chips

Chen

Wen

et al. 2023

Processes

View full text Add to dashboard Cite

The initial excitation of interface crack of large-size ultra-thin chips is one of the most complicated technical challenges. To address this issue, the reversible fracture characteristics of a silicon-based chip (chip size: 1.025 mm × 0.4 mm × 0.15 mm) adhesive layer interface was examined by scanning electron microscope (SEM) tests, and the characteristics of a cohesive zone model (CZM) unit were obtained through peel testing. The fitting curve of the elastic bilinear model was in high agreement with the experimental data, with a correlation coefficient of 0.98. The maximum energy release rate required for stripping was GC = 10.3567 N/m. Subsequently, a cohesive mechanical model of large-size ultra-thin chip peeling was established, and the mechanical characteristics of crack initial excitation were analyzed. The findings revealed that the larger deflection peeling angle in the peeling process resulted in a smaller peeling force and energy release rate (ERR), which made the initial crack formation difficult. To mitigate this, a coupling control method of structure and force surface was proposed. In this method, through structural coupling, the change in chip deflection was greatly reduced through the surface coupling force, and the peeling angle was greatly improved. It changed the local stiffness of the laminated structure, made the action point of fracture force migrate from the center of the chip to near the edge of the chip, the peeling angle was increased, and the energy release rate was locally improved. Finally, combined with mechanical analysis and numerical simulation of the peeling process, the mechanical characteristics of peeling were analyzed in detail. The results indicated that during the initial crack germination process, the ERR of the peel interface is significantly increased, the maximum stress value borne by the chip is significantly reduced, and the peel safety and reliability are greatly improved.

show abstract

Realistic Stacking Sequence Optimisation of an Aero-Engine Fan Blade-Like Structure Subjected to Frequency, Deformation and Manufacturing Constraints

Cited by 6 publications

References 16 publications

Moisture absorption in thick composite plates: modelling and experiments

Moisture absorption in thick composite plates: modelling and experiments

Designing Bioinspired Composite Structures via Genetic Algorithm and Conditional Variational Autoencoder

Coupled Excitation Strategy for Crack Initiation at the Adhesive Interface of Large-Sized Ultra-Thin Chips

Contact Info

Product

Resources

About