Sumit Hazra
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Reuse, remanufacturing and recycling in the steel sector Open
The global steel sector is undergoing a transition from being a major CO 2 emitter to a more sustainable circular material service provider, moving towards (near) net zero CO 2 through combined strategies of reuse, remanufacturing, recycli…
Effect of continuous and discontinuous non-proportional loadings on formability of DX54 sheet material Open
Both continuous and discontinuous non-proportional loadings occur in multi-stage automotive stamping processes. Discontinuous loading is widely studied, but due to requiring sophisticated experimental procedures, continuous loading has bee…
A circular economy approach for recycling Electric Motors in the end-of-life Vehicles: A literature review Open
Increasing concerns over climate change have led to global decarbonisation efforts, in the form of new legislation, to phase out the sale of internal combustion engine (ICE) vehicles. As a result, the transition to electrified powertrain v…
Deep Learning Approach for automatic detection of split defects on sheet metal stamping parts Open
Sheet metal stamping processes are used primarily for high-volume products produced for a range of sectors, from white goods manufacturing to the automotive and aerospace sectors. However, the process is susceptible to defects. Due to the …
HDR Image-Based Deep Learning Approach for Automatic Detection of Split Defects on Sheet Metal Stamping Parts Open
Sheet metal stamping is widely used for high-volume production. Despite the wide adoption, it can lead to defects in the manufactured components, making their quality unacceptable. Because of the variety of defects that can occur on the fi…
In-situ study of strain and texture evolution during continuous strain path change Open
Automotive stamping is a multi-stage process where a sheet material is drawn in first stage and then redrawn, flanged and pierced in subsequent stages. In the first draw stage, continuous strain path change is induced in the material while…
Accounting for the effect of heterogeneous plastic deformation on the formability of aluminium and steel sheets Open
Forming limit curves characterise “mean” failure strains of sheet metals. Safety levels from the curves define the deterministic upper limit of the processing and part design window, which can be small for high strength, low formability ma…
The strain fields present during the bending of ultra-high strength steels Open
Ultra high strength steels (UHSS) have an ultimate tensile strength of greater than 1GPa. Typically, their ambient temperature elongation is less than 10% and as a result, they are rarely used in stamping applications. However, the continu…
Forming parts over small radii Open
Stamping simulations usually make the plane stress simplifying assumption. However, this becomes less valid when material draws around features with radius to sheet thickness ratios less than 20. Pereira, Yan & Rolfe (Wear, Vol.265, p.1687…
The Bendability of Ultra High strength Steels Open
Automotive manufacturers have been reducing the weight of their vehicles to meet increasingly stringent environmental legislation that reflects public demand. A strategy is to use higher strength materials for parts with reduced cross-sect…
Benchmark 2 – Springback of a Jaguar Land Rover Aluminium Open
The aim of this benchmark is the numerical prediction of the springback of an aluminium panel used in the \nproduction of a Jaguar car. The numerical simulation of springback has been very important for the reduction of die \ntry outs thro…