Proggles

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TWI has developed a proprietary material surface treatment technique and joining process called Comeld, that offers the potential to make joints with enhanced performance between fibre[sic] reinforced plastic (FRP) composite materials and metals. Comeld is the application of a proprietary material surface treatment technique (1) called Surfi-Sculpt™.This uses a power beam (e.g. an electron beam) to create protrusions (known as ‘proggles’) and cavities in the metal on to which the composite is laid and cured, forming the Comeld joint.