Refine Your Search

Search Results

Viewing 1 to 5 of 5
Journal Article

Cyclic Stress-Strain Behaviour of AM60B and AE44 Cast Magnesium Alloys and Its Impact on LCF Characterisation and Fatigue Analysis

2014-04-01
2014-01-0969
Light weight alloys are widely used in the automotive industry in order to meet environmental requirements. Cast magnesium alloys are candidate materials due to their high strength to weight ratio, high stiffness and excellent castability. However, some previously reported anomalous cyclic stress-strain behaviours of magnesium alloys have not been fully investigated especially in LCF characterisation. The main objective of this work was to investigate the cyclic loading-unloading behaviour of high pressure die cast (HPDC) AM60B and AE44 magnesium alloys under uniaxial tension or/and compression and its effect on LCF behaviour. It was found that classical linear stress-strain behaviour, for both AM60B and AE44 alloys, applied only to a very small range of stress beyond which significant pseudo-elastic behaviour was discovered. This affected LCF characterisation and subsequent fatigue analysis processes.
Technical Paper

Cost Effective Material for the Fuel Returns Line Hoses in Automotive Application

2020-09-25
2020-28-0415
Currently automotive industry is struggling for its sustainability to produce cost effective products with better or same performance. In this study, fuel return line has been converted from Viton/Hypalon material to Epichlorohydrin based material. In initial phase, technical specifications and material properties has been compared. In later phase, components were developed with modified material and validated at Test bed as well as Vehicle level to understand the material behavior in Real world usage. Further, test results were compared and results shows that the new material is able to cater vehicle application requirement in terms of reliability and durability with a good cost saving.
Technical Paper

The Use of Intumescent Coatings with Polymer Composites for High Temperature Automotive Applications

2015-04-14
2015-01-0713
To meet corporate CO2 emission targets polymer composites are being explored for light-weighting vehicle applications. Operational requirements may demand that such materials function above glass transition temperatures or heat deflection points. Intumescent coatings are traditionally used in construction to protect steelwork during fire. This paper presents a novel experimental investigation of two intumescent technologies to thermally protect a reinforced polyamide, for use as a semi-structural vehicle component. Coatings were assessed against the thermal requirement to withstand 500°C for 10 minutes. The differences in performance observed between water and epoxy based coatings as well as when an insulation layer was introduced are reported. Ultimate Tensile Stress (UTS) and modulus values were obtained at −40°C, ambient, and 85°C for uncoated specimens before and after thermal cycling.
Technical Paper

Adding Depth: Establishing 3D Display Fundamentals for Automotive Applications

2015-04-14
2015-01-0147
The advent of 3D displays offers Human-Machine Interface (HMI) designers and engineers new opportunities to shape the user's experience of information within the vehicle. However, the application of 3D displays to the in-vehicle environment introduces a number of new parameters that must be carefully considered in order to optimise the user experience. In addition, there is potential for 3D displays to increase driver inattention, either through diverting the driver's attention away from the road or by increasing the time taken to assimilate information. Manufacturers must therefore take great care in establishing the ‘do’s and ‘don’t's of 3D interface design for the automotive context, providing a sound basis upon which HMI designers can innovate. This paper describes the approach and findings of a three-part investigation into the use of 3D displays in the instrument cluster of a road car, the overall aim of which was to define the boundaries of the 3D HMI design space.
Technical Paper

Material Modelling of Lamination Stack in Electric Machines

2024-04-09
2024-01-2745
The rotor and stator of electric motors consist of multiple materials, of which steel forms the majority of mass and volume. Steel in electric motors is commonly in the form of thin sheets (laminations), stacked along the axis of the rotor. The structural integrity of such a stack can be ensured using bolting, welding or bonding of the laminations. Predictive mechanical finite element simulations of these laminated stacks can become computationally intense because the steel sheets are thin, and the motor often contains hundreds of them. If the laminations are modelled individually, the size of the elements is very small compared to the overall dimensions and the interface between the laminations need to be modelled as well. In this paper, we present an alternate method of modelling this laminated stack as a single solid body using homogeneous and orthotropic material property, instead of representing each lamination.
X