Other

Ole Jorgensen

Subra Suresh

Antonios E Giannakopoulos

Nitin P Padture

Rajendran Thampuran

Marten Olsson

Juthamas Jitcharoen

A regulating insert for insertion in a valve housing or the like in a flowing medium, comprising comprises a pre-setting means for regulation and/or setting of amounts of liquid in installations with flowing media for the limitation of the medium to a pre-set maximum amount, independently of a differential pressure working across the valve. The insert further comprises a tubular regulating element which is displaceable in a housing () in the longitudinal direction of the regulating insert, and lies up against a spring element () so that upon displacement the tubular regulating element () respectively opens or closes a number of openings () in the housing (). The tubular regulating element () is influenced for regulation by a membrane, where the membrane () is a roller membrane, the roller membrane () being fastened along an outer diameter to the inner side of the housing () and along an inner diameter is fastened to the outer surface of the regulating element (). The resulting forces stemming from the differential pressure across the membrane () lie on the same cylinder surface as that which extends through a slide surface () between the largest diameter of the regulating element () and the smallest diameter of the housing ().

Differential pressure valve

An article is provided that is highly resistant to localized normal indentation, or indentation tensile stresses, against its surface. The article is a stacked array of at least five layer units each having local anisotropy in at least one direction. Each unit has an adjacent unit that differs in a mechanical property, or offset in principle axis of anisotropy by less than 45&deg;. The article forms part of a construction constructed and positioned to withstand indentation, or contact damage, detrimental to its use having a component normal to any tangent of the surface. The article can be a stacked array of fiber-reinforced polymeric material, i.e., prepreg, with the fiber direction offset from each layer to the next by less than 45&deg;. Methods of making the article and methods of use of the article to resist impact are provided. Also provided are articles having surfaces, the surfaces being constructed and arranged to withstand sliding contact stress. The surfaces of these articles are functionally-graded.

Functionally-graded materials and the engineering of tribological resistance at surfaces

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Slagelse, Denmark

Ole Jorgensen