Abstract:
A corrosion measurement system (100) includes a corrosion sensor (110) having a corrosion sensor output related to corrosion due to exposure to a process fluid (104). A process variable sensor (106) provides a process variable output related to a process variable of the process fluid (104). Measurement circuitry (120) coupled to the corrosion sensor (110) and the process variable sensor (106) provides an output related to corrosion based upon the corrosion sensor output and the process variable output
Abstract:
A corrosion management method is provided and includes storing an asset fleet at a location, generating a corrosion rate stressor by reference to models for any component of an asset of the asset fleet corresponding to the location and storage practice of the asset, predicting an accumulated corrosion stressor severity from the generated corrosion rate stressor, measuring an actual corrosion rate stressor at the location and revising the models in accordance with a difference between the predicted accumulated corrosion stressor severity and the measured actual corrosion rate stressor.
Abstract:
Zum Prüfen von Wafern, Mikrochips und dgl. werden elektrische und/oder elektrochemische Eigenschaften derselben auf elektrochemischem Weg periodisch gemessen und gespeichert. Die Messwerte werden miteinander verglichen, um Änderungen der Eigenschaften zu ermitteln. Für das Ausführen des Verfahrens ist eine als Messzelle ausgebildete Vorrichtung 1 vorgesehen, die zwischen einer oberen Halbzelle 5 und einer unteren Halbzelle 3 einen Prüfraum 7 aufweist, durch den Elektrolyt geleitet wird. Der Prüfraum 7 wird durch einen Zellendeckel 21, der gleichzeitig einen Wafer 19 gegen eine Ringdichtung 13 in Richtung auf die obere Halbzelle 5 drückt, verschlossen. Die den Prüfraum 7 bildende Öffnung in der unteren Halbzelle 3 wird durch eine Ringdichtung 23, eine Anodenplatte 25 und einen Anodendeckel 27 verschlossen.
Abstract:
In some implementations, a method for validating an acoustic bond-log tool includes having a test fixture including a wellbore casing emulating tubing. An outer tubing emulates a well formation and forms a perimeter of an annulus surrounding the wellbore casing emulating tubing. The wellbore casing tubing is configured with a stepped outer surface emulating different wellbore casing sidewall thicknesses. A dividing structure is coupled in the axial direction to the outer surface of the wellbore casing emulating tubing and to the inner surface of the outer tubing to radially subdivide the annulus into a plurality of hermetically sealable sample sections. Each sample section contains a sample of a material having a known acoustic impedance. The acoustic bond-log tool is validated by comparing a bond-log tool measurement of the acoustic impedance of each sample in a particular sample section to the known acoustic impedance of the sample.