Abstract: A sand screen including a frame, a filtration media disposed in contact with the frame, the filtration media being of single-piece unitary construction and exhibiting varying flow properties over a surface of the media, or through a radial thickness of the media. A filtration media being of single-piece unitary construction and exhibiting varying flow properties over a surface area of the media, or through a radial thickness of the media.

Abstract: A process for producing a powder witness coupon including additively manufacturing a container simultaneously with a primary part, filling at least a portion of the container with a feed material employed for the part simultaneously with the additive manufacturing of the primary part, and sealing the container during the additive manufacturing of the primary part. An in-situ feed material powder witness coupon including a container additively manufactured simultaneously with a primary part, and a plurality of individual chambers within the container, at least one of the chambers being removable intact from the container. Further, a method for enhancing examination of feed material in an additively manufactured part including additively manufacturing a container simultaneously with a primary part, capturing feed material, density and environment in the container, and sealing the container.