1. Hybrid Composite System
Correlation of Experimental Results with Computational Model for Mixed Material
Hybrid Composite System
Gurpinder Singh Dhaliwal , Golam Newaz
Department of Mechanical Engineering, Wayne State University , Detroit, 48201
1.Introduction
Finite Element Computational Model
Sample Type (B)
Typical Experimental Load vs. Displacement Behavior Graphs
Hybrid Composite laminates have been widely regarded as a family of highly damage tolerant materials with a high weight saving potential . The main hindrance to full utilization of Hybrid Composite System in automotive industry is their Structural Response as compared to monolithic materials like Steel or Aluminum .
2.Objective
Damage Progression on CRF-AL without Epoxy Resin Sample
Sample Type (C)
The main goal of this research is to investigate the Stiffness, Weight Savings, Load carrying capacity , failure Modes of Al/CRF Hybrid Composite System and validate the Experimental results with Computational Model
3. Method
Three point Flexural Test Method
Weight Savings as Compared to Reference Hat Section Beam
The load displacement Graph Shows that Flexural Stiffness of Hybrid system bonded with epoxy resin is close to monolithic Aluminum Beam of same thickness
Weight of Carbon fiber-Aluminum and Aluminum Samples
Sample
Sample Type
Weight (g)
Weight Saving As Compared To reference Sample (%) 1
Aluminum Reference Sample With Thickness 1.3 mm
106 2
Carbon fiber-Aluminum Sample with NO Epoxy Resin thickness 1.3 mm 77
26.41 79
Carbon fiber-Aluminum Sample with Epoxy Resin thickness 1.3 mm
24.52 81 3 80
Typical Failure modes of Hybrid Composite Beams
Damage Progression on CRF-AL with Epoxy Resin Sample
Sample Type (A)
4.Results
Description of hat section beams studied
Sample Category
Sample type A
Aluminum Hat Section with Thickness =1.3mm (Reference Sample) B
Woven Carbon Fibre- Aluminum With No Resin In Bonding
( Carbon Fibre Thickness=0.8mm ,Aluminum Thickness 0.5mm) C
Woven Carbon Fibre- Aluminum Adhesively Bonded by Epoxy Resin
5.Discussion
The test results indicate that Flexural Stiffness of Hybrid Composite system is dependent on the Bond between Aluminum Sheet and CRF plies.
Load Carrying capacity of hybrid beam bonded with epoxy resin is better than without epoxy resin