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ABSTRACTA Proof-of-Concept (POC) low power-low current wireless sensor network (WSN) for corrosion detection and monitoring of offshore wind turbine (OWT)’s component, entitled iWindCr, has been developed and field trialled in one of the OWTs in the UK south region. This paper reports on the setting up and outcomes of this field trial. The trial has successfully demonstrated the working functionality of the WSN by measuring changes of the Open Circuit Potential (OCP) and Zero Resistance Ammeter (ZRA) electrochemical parameters over a period of time. The state of corrosion and estimated life of an M72 galvanised steel stud, part of the Monopile (MP)-transition piece (TP) flanged connection were evaluated using the real-time data from the WSN with reference to the material’s corrosion thresholds from the iWindCrdatabase. The paper details the electrochemical analysis processes in relation to the Electrochemical Impedance Spectroscopy (EIS), Potentiodynamic Polarisation Curve (PPC) in addition to the OCP and ZRA techniques. The electrochemical parameters and corrosion threshold values from seawater immersion tests of the steel alloys SS316L and S355, the typical MP-TP materials are presented.

In many computing and communication applications, the intermediate bus architecture (IBA) with nonisolated point-of-load (niPOL) converters continues to displace conventional distributed and centralized power solutions. Key drivers of this trend […]

More manufacturers are implementing predictive maintenance (PDM) programs to maximize the performance of their machine tools. The goal of PDM and related programs is to predict when a machine tool will fail or deviate from tolerance so that unplanned time can be minimized. Basic elements of a PDM program include monitoring machine tool conditions, diagnostics to identify problems, data analysis and corrective actions and early warning and prediction., Here are some of the tools and techniques for making sure machine tools stay at peak performance levels. Reducing machine tool downtime and assuring quality have become increasingly important as [...]

Machine tool manufacturer Haas Automation Inc. has reduced its operation costs without sacrificing the qaulity of its products by using flexible automation technology, which uses 'standard' cells in the machining centers. The cells enable the machines to double their production without reducing flexibility and quality. Haas is builidng over 150 machines a month to support the rapidly rising demand for machining centers., With their business more than doubling every year, Haas Automation had to quickly increase machining capacity without increasing cost. Flexible cells delivered the goods. Here's how they work. How do [...]

coloring by Gaurakisora Tucker SLIM G00DB0DY by Aaron Warner & Thom Zahler IT'S TRUE! A BEE HAS 5000 NOSTRILS! IT CAN SMELL AN APPLE TREE THAT'S TWO MILES AWAY! I [...]

Question: What was the most significant advancement in your area of responsibility during 1991? Jonathan Goulden: Without a doubt, the announcement and shipment of the new low and midrange platforms […]

'He says, 'Arf', so I'm texting him back [...]