Extrusion is the process by which a block/billet of metal is reduced. in cross section by forcing it to flow through a die orifice under. high pressure . â¢ In general, extrusion is used to. produce cylindrical bars or hollow. tubes or for the starting stock for. drawn rod, cold extrusion or forged. products.
Principal consultants lead and develop consulting teams. Related Articles. A principal consultant is a senior member of a consultancy firm who takes a lead role in a consulting project and may direct a team of analysts and junior consultants. The specific job title varies from firm to firm.
(December 2014) A principal investigator (PI) is the holder of an independent grant administered by a university and the lead researcher for the grant project, usually in the sciences, such as a laboratory study or a clinical trial. The phrase is also often used as a synonym for head of the laboratory or research group leader..