Recent Advancements in Mechanical Drilling of Composite Laminates, Volume II

A special issue of Journal of Composites Science (ISSN 2504-477X). This special issue belongs to the section "Composites Manufacturing and Processing".

Deadline for manuscript submissions: closed (30 September 2024) | Viewed by 1846

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Guest Editor
Laboratoire des Technologies Innovantes LTI, University Institute of Technology of Amiens, University of Picardie Jules Verne, UR UPJV 3899, 80025 Amiens, France
Interests: mechanics; multiscale modeling; crystal plasticity; micromechanics; stability and bifurcation; microstructure; polycristalline steels; multi-material stacks; FRP composite materials; ductility; damage; wear; forming; drilling; welding
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Special Issue Information

Dear Colleagues,

Fiber-Reinforced Polymer (FRP) composite laminates, such as Carbon Fiber-Reinforced Polymers (CFRP), Glass Fiber-Reinforced Polymers (GFRP), Aramid Fiber-Reinforced Polymers (AFRP) or more recently Natural Fiber-Reinforced Polymers (NFRP), exhibit enhanced properties compared to conventional materials and are gradually preferred to them in various engineering applications such as automotive parts or sport goods. In the particular case of the modern aeronautical manufacturing, emerging hybrid Fiber Metal Laminates (FML) or bi-material metallic-composite stacks are used to obtain better structural functionalities and mechanical properties superior to those of the individual components. Despite their widespread applications, drilling of these composite laminates with required quality remains a challenging task because of the heterogeneity, anisotropy and high abrasiveness of fibers for the FRP composites and due to the disparate machinability of each constituted material in the case of hybrid stacks.

The drilling performance and drilled-hole quality are essentially characterized by surface roughness, peel-up and push-out delamination, mechanical and thermal damages and thrust force. They depend on cutting parameters (cutting speed and feed rate), drilling tool characteristics (type, geometry, coating, material) and drilling processes (conventional and unconventional).

This Special Issue focuses on latest experimental and theoretical advancements in the fields of various drilling processes for composite laminates covering large topic including these main aspects: damage modelling in composite drilling by FE approaches or analytical models, optimization of process parameters, development of special drill bits, damage detection and quantification, wear prediction and tool performance… Authors are encouraged to contribute to the Special Issue by submitting original papers as well as review articles.

Prof. Dr. Gérald Franz
Guest Editor

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Keywords

  • composite laminates (CFRP, GFRP, AFRP)
  • fiber-Metal Laminates (FML) and FRP/metal stacks
  • conventional drilling and orthogonal cutting
  • non-traditional drilling processes (e.g., vibration-assisted drilling, orbital drilling, …)
  • drilled-hole quality (delamination, roughness, diameter…)
  • chip formation and removal mechanisms
  • drill wear mechanisms and tool life
  • tribological behavior and friction tool-chip interface modeling
  • numerical simulation and FE analysis
  • mechanistic and analytical modeling of thrust force and heat generation

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Published Papers (1 paper)

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15 pages, 2932 KiB  
Article
On the Double-Double Laminate Buckling Optimum for the 18-Panel ‘Horse-Shoe’ Reference Case
by Erik Kappel
J. Compos. Sci. 2024, 8(2), 77; https://doi.org/10.3390/jcs8020077 - 16 Feb 2024
Viewed by 1498
Abstract
The Double-Double (DD) laminate family allows for simplification in the context of buckling analysis. Stacking-sequence discussions, known from conventional-laminate optimization, made from 0, ±45, 90 plies, omit for DD. The recently presented DD-specific buckling relation is applied [...] Read more.
The Double-Double (DD) laminate family allows for simplification in the context of buckling analysis. Stacking-sequence discussions, known from conventional-laminate optimization, made from 0, ±45, 90 plies, omit for DD. The recently presented DD-specific buckling relation is applied in this article to the 18-panel, ‘horse-shoe’ laminate blending reference case. The use case addresses the challenge of identifying a compatible group of laminates for differently loaded, adjacent regions, as it is a common scenario in wing covers and fuselage skins. The study demonstrates how the novel DD-laminate buckling relation simplifies the process of determining a buckling optimum for a group of laminates. The process of determining the optimum blended DD panel is presented. Its determined mass is compared with minimum masses, presented in earlier studies, which focus on stacking optimization and blending for more conventional ply orientations and laminate stacking conventions. Full article
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