Our Research

Our research is focussed on 3 main areas - LPBF-AM, FAS, and Powder Characterization

Laser Powder Bed Fusion Additive Manufacturing

LPBF-AM

Our modeling and experimental works aim at defining routes for the fabrication of defect-free AM parts using systems suffering from solidification issues (Al alloys and Superalloys). We are working with an in-house built laser-based powder bed system that has a pulse shaping freedom permitting alloy-specific processing. Concepts such as microsegregation solidification modeling (with experimental validation), pulse firing sequence to maximize productivity while maintaining rapid solidification conditions and powder blend engineering, on the microstructure and properties are studied. Additional work on wire-based laser AM and AM extrusion of high temperature materials are on-going.

Field Assisted Sintering

FAS

Our work on SPS mainly spans around the microstructure processing properties relationship of Al components. Our group focuses on: (1) Fabrication of nanostructured and ultra-fine grained components from the consolidation of nanostructured materials, where sintering cycle optimisation to control the grain growth during sintering is targeted. (2) Modeling and experimental fabrication of high-thickness components with height to diameter ratio of >1. (3) Tool design consideration for direct fabrication of complex components, with consideration of temperature homogenization for changing component thicknesses, powder flow for filling die cavities and effect of volumetric changes. (4) SPS sintering maps to develop a universal approach for the determination of sintering parameters to maximize the contribution of the various sintering mechanisms involved during SPS.

Impact and Thermal Cycling Design Allowable for Powder Materials

Powder Characterization

The intent of this program is to evaluate service properties of parts and coupons made from powders. (1) High strain rate deformation (impact) is measured to define bulk and/or local component properties for a single impact, or from a series of impacts, to determine the effect of processing inhomogeneity on fracture propagation. These measurements are carried out in a range of length-scale and strain rate, using a suite of equipment that include Charpy testers, Hopkinson bar set-up and nano-impact indentation. (2) The effect of thermal cycling on the mechanical integrity (static and dynamic) of coupons and components is measured to define service life condition under such simulated conditions. Thermal cycling facilities are capable to impose cycle from -150 to 1500C, at heating/cooling rate as high as 2000C/sec, with and without applied load. The suite of equipment includes an induction dilatometer (with cryo possibilities), thermo-mechanical analyser and a high vacuum thermal cycling/quench furnace unit.

More Services

Creative Performance

Even the all-powerful Pointing has no control about the blind texts it is an almost unorthographic.

Reach Performance

Even the all-powerful Pointing has no control about the blind texts it is an almost unorthographic.

Custom Development

Even the all-powerful Pointing has no control about the blind texts it is an almost unorthographic.

Creative Performance

Even the all-powerful Pointing has no control about the blind texts it is an almost unorthographic.

Reach Performance

Even the all-powerful Pointing has no control about the blind texts it is an almost unorthographic.

Custom Development

Even the all-powerful Pointing has no control about the blind texts it is an almost unorthographic.