Design of a Lightweight Multifunctional Composite Railway Axle Utilising Coaxial Skins
2. Railway Axle Configurations
3. Composite Railway Axle Design Incorporating Coaxial Skins
3.1. The Structural Hybrid Metallic-Composite (HMC) Railway Axle Assembly
3.1.1. Carbon Fibre Reinforced Polymer (CFRP) Composite Tube
3.1.2. Steel Stub Axle
3.1.3. Epoxy Adhesive Joint
3.2. Multifunctional Coaxial Skins
3.2.1. Layer 1-Structural Health Monitoring
3.2.2. Layer 2-Fire Protection
3.2.3. Layer 3-Impact Protection
3.2.4. Layer 4-Environmental Protection
4. Sizing of the Structural HMC Railway Axle
4.1. Material Properties
4.2. CFRP Tube Modelling Conditions
4.3. Parametric Study of the Structural HMC Railway Axle Assembly
4.4. Finalised Parameters of the HMC Railway Axle
- A stiffness analysis of the HMC railway axle assembly to minimise deflections at the bearings, strains within the CFRP tube matrix and shaft whirling effects.
- Addition of off axis fibres to address levels of torsional loading and to protect the load bearing axial fibres.
- Specifying short, compliant tapers to the stub axle extension and CFRP tube to reduce peak stresses in the bond.
6. Future Work
Conflicts of Interest
|CFRP tube (Carbon fibre reinforced epoxy)||135||GPa|
|Stub axle (EA1N steel approximated as AISI 1030 steel)||210||GPa|
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Mistry, P.J.; Johnson, M.S.; McRobie, C.A.; Jones, I.A. Design of a Lightweight Multifunctional Composite Railway Axle Utilising Coaxial Skins. J. Compos. Sci. 2021, 5, 77. https://doi.org/10.3390/jcs5030077
Mistry PJ, Johnson MS, McRobie CA, Jones IA. Design of a Lightweight Multifunctional Composite Railway Axle Utilising Coaxial Skins. Journal of Composites Science. 2021; 5(3):77. https://doi.org/10.3390/jcs5030077Chicago/Turabian Style
Mistry, Preetum J., Michael S. Johnson, Charles A. McRobie, and Ivor A. Jones. 2021. "Design of a Lightweight Multifunctional Composite Railway Axle Utilising Coaxial Skins" Journal of Composites Science 5, no. 3: 77. https://doi.org/10.3390/jcs5030077