Testing and modeling of Nomex™ honeycomb sandwich Panels with bolt insert

The flatwise compressive properties of Nomex honeycomb core with debonding imperfections in the double cell wall

“…3) explicit two-dimensional shell elements [9,[27][28][29].These methodsneed validation based on testresults M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 4 for each type of cores with different parameters, such as height, cell size, wall thickness, resin ratio (relating to the core density), etc. Furthermore, they did not reflect the layered nature of the Nomex honeycomb core and thus, cannot be used to investigate the bonding conditions between the aramid paper layers in the double cell wall.…”

“…Examples of the applications of Nomex honeycomb core sandwich structures in airplane are floors, doors, wing flaps, wing-body fairings, rudders, overhead stowage bins, ceiling or sidewall panels, engine cowls, spoilers, nacelles, radomes, etc. [9][10][11].…”

Experimental and numerical analysis of the shear nonlinear behaviour of Nomex honeycomb core: Application to insert sizing

“…In contrast, if the correction factor found this research is used (1.16 instead 1.36), the shear strength is overestimated by 0.45%. When this same comparison procedure was applied to the inserts tested in the works of Kumsantia [50], Roy et al [30], Bunyawanichakul et al [6] and Song et al [49], the overestimation errors using the correction factor of ESA (1.36) were 23.29%, 21.12%, 32.63% and 18.91% respectively. When the correction factor of this research was used (1.16) the errors where 4.25%, 2.42%, 12.15%, and 0.55% respectively.…”

“…The nonlinear shear laws (τ vs γ) are obtained by a 3-point bending test and identification with a finite element model. Roy et al [30], like Heimbs [31], model the exact geometry of the honeycomb to find nonlinear shear responses. However, the results depend on good determination of the material characteristics of the impregnated aramid paper used [32] and on whether the local geometry is properly taken into account.…”

Mechanical Properties and Fatigue Performances on Sandwich Structures with CFRP Skin and Nomex Honeycomb Core

“…In this paper was investigated the most widely used core for sandwich structure with multiple applications in the aviation field namely phenolic resin-impregnated * email: mihai.pop@unitbv.ro aramid paper, known as Nomex (E.I. du Pont de Nemours Corp., Wilmington, DE, USA) [9]. Nomex honeycomb structure is recognized for: excellent electrical, thermal and fatigue properties; good formability; flame resistant; very good fire resistance and good insulating properties [2].…”