The potential of buckling in compressive members has been considered as a disadvantage when using steel members in the construction industry. In spite of the progress made in this regard, buckling is still considered as a challenge in the analysis and design of compressive steel structural members. Such a challenging phenomenon can be controlled by strengthening of compressive members. Stiffene...

Stiffened plates are widely used in aerospace structures as load-bearing components. In order to obtain a novel design of stiffened with excellent performance, generative method (GDMSP) based on the homogenization is proposed this paper, which optimizes stiffener layout an equivalent model. Then, detailed model can then be obtained by extracting path from discrete distribution angles. Moreover,...

The design of stiffened, composite wing panels must satisfy a range of requirements related to performance, economy and safety. In particular, the design must be damage tolerant to satisfy a number of different performance requirements for various states of damage. To obtain an optimum configuration that satisfies these requirements simultaneously, optimization code PANOPT was extended with a m...

Thermoplastic composites offer many opportunities for aeronautics. Among them is the possibility of overmolding composite parts to obtain finished “netshape” in medium series. This paper presents complexity manufacturing method and defects that may occur some grid-stiffened overmolded using aeronautic thermoplastics. The results impact tests up 15 J carried out at various locations plates grid ...

Abstract Direct or indirect damages due to foreign object impacts on aeronautical structures, represent a major concern. The problem potentially intensifies with the adoption of composite materials, especially Barely Visible Impact Damage (BVID). In this context, understanding whether an impact event gives rise delamination debonding is highly desirable in view optimization maintenance strategi...

The advents in continuous fibre-reinforced polymer additive manufacturing (CFRP-AM) present unprecedented opportunities for the rapid development of next-generation high-performance composites with selectively and spatially distributed reinforcement. However, widely adopted 3-degree-of-freedom motion configuration current CFRP-AM systems hinders exploration composite structures non-planar fibre...

Shear walls are used in most of the tall buildings for carrying the lateral load. When openings for doors or windows are necessary to be existed in the shear walls, a special type of the shear walls is used called "coupled shear walls" which in some cases is stiffened by specific beams and so, called "stiffened coupled shear walls". In this paper, a mathematical method for geometrically nonline...

This paper presents a new structural health monitoring strategy based on deep learning architecture that uses nonlinear ultrasonic signals for the automatic assessment of breathing-like debonds in lightweight stiffened composite panels (SCPs). Towards this, finite element simulations guided wave (GW) response SCPs and laboratory-based experiments have been undertaken multiple with without basep...

Parylene C arrayed neural probes possessing 3D sheath structures that can be decorated with neurotrophic factors for attracting and promoting neural tissue ingrowth are presented for long-term intracortical neural recording. 3D sheath structures were constructed through thermoforming of surface micromachined Parylene microchannels around a solid microwire mold. Multiple Pt electrodes were patte...