Inverse Hybrid Laminate for Lightweight Applications

Abstract

Because of their high specific stiffness and strength, fiber reinforced plastics (FRP) are preferred lightweight materials. Recent developments show a growing industrial interest in the integration of thermoplastic FRP in complex structures for high volumes. However, there are still shortcomings for these materials concerning the insufficient energy absorption in case of failure and the limited opportunities available for the assembly with other components. Improvements in the crash performance can be achieved for instance with the selective reinforcement of the FRP structure with ductile metallic inserts. The present study shows the interlaminar shear strength and scanning electron microscope (SEM) samples of a novel load optimized hybrid composite consisting of a continuous fiber-reinforced thermoplastic matrix, in which a metal core is integrated.

Damage to inverse hybrid laminate structures: an analysis of shear strength test

“…The test conditions are given in Table 3. The research described in this article extends the results of analyses presented by the author in an earlier publication [3], which presents the results of the ILSS test in the form of the measured shear stresses (τ max , τ B ) in the specimens described in Table 1. The results of the ILSS SBS test are given in Table 4.…”

“…Fiber metal laminates (FMLs) [1], also referred to as hybrid metal composites [2] or hybrid laminates [3], are materials combining polymer matrix composite laminates with fiber-reinforced polymers (FRPs) and metal sheets. They allow the synergy of the characteristics of the constituting materials: high ductility of the metal alloys and the strength of the composites [4].…”

“…The outer layers are made of FRP (PA sheets reinforced with carbon fibers [CFs] or glass fibers [GFs]) and a metallic liner is placed inside the laminate. standard and inverse hybrid laminate (InverTec) [3]. FRP, fiber-reinforced polymer…”

“…The aim of this study was to analyze more extensively the quality of the core-FRP interface in InverTec laminate variants based on the assessment of defects in InverTec laminate specimens formed during ILSS tests, described in a previous work by the author [3], carried out with the three-point bending SBS method and comparison with defects arising during ILSS tests in FMLs with a classic ply arrangement. Due to the attempts to develop…”

Determination of fracture energy (mode I) in the inverse fiber metal laminates using experimental–numerical approach

“…Modern-day technologies drive the development of new hybrid materials. Hybrid laminates are the newest combination of different materials and are being quickly developed by top universities in the European Union (Osiecki 2020;Tomasz et al 2017). One of the characteristic groups of hybrid laminates is Fiber Metal Laminates (FMLs) (Salve et al 2016;Balkumar et al 2016).…”