In Lamb Waves based Structural Health Monitoring (LWSHM) of composite aeronautic structures, Deep Learning (DL) methods have proven to be promising monitor damage using the signals collected by piezoelectric sensors (PZTs). However, those data driven algorithms are strongly problem dependent: any structural change dramatically impacts accuracy predictions and generalization learnt other structu...

Recent developments are presented for the efficient analysis of vibration in large-scale complex structures. The key issues considered are the generation of reduced-order models (ROM) for the fast and accurate prediction of vibratory response in the lowto mid-frequency range, the development of physical substructuring approaches for capturing critical power flow paths, and the prediction of the...

Composite lattice ring structures are known for their lightweight and high efficiency, which have a strong attraction in the aeronautical aerospace industries. The general manufacturing process such is to use wet filament winding technology. Due anisotropic properties of continuous fibers, trajectory determines mechanical composite structures. In this work, topology optimization method proposed...

Repair of aeronautical structures by composite patch bonding has shown its effectiveness in several studies during the last few decades. This repair technique leads to a retardation propagation repaired cracks via load bridging across throughout adhesive layer, interfacing it with structure. The purpose this study is analyze behavior patch-repaired present thin plates made aluminum alloy 7075-T...

The assembly process of aeronautical panel usually involves numerous parts and subprocesses. Thus a large number of Finite Element Analysis (FEA) runs are required to construct its compliant Deviation Propagation Model (DPM), when using the traditional compliant assembly variation analysis methods such as the Method of Influence Coefficients and the Linear Contact method. In this paper, an effi...

“Better, Faster, Cheaper” (BFC) emerged in the 1990s as a new paradigm for aerospace products. In this paper, we examine some of the underlying reasons for BFC and offer some thoughts to help frame the thinking and action of aerospace industry professionals in this new era. Examination of literature on industrial innovation indicates that aeronautical products have evolved to a “dominant design...