... directly compares Thermal History technology with other methods such as Type-K sheathed thermocouples, uniform crystal temperature sensors (UCTS), and pyrometry on two stage-1 blades of a midsize Kawasaki gas turbine engine test. Temperature data obtained from the different temperature methods were...

... react with ammonia (NH 3 ) to form nitrogen and water vapor. The reaction is influenced by several variables, including stored ammonia on the catalyst, exhaust gas composition, and catalyst temperature. Currently, measurements from NO x and/or NH 3 sensors upstream and downstream of the SCR are used...

... Aerospace Experimental Flow induced vibration Gas turbine technology Measurement techniques Sensors Thermodynamics Propulsion systems Flow induced noise Nowadays, unstable compressor behavior is not yet fully understood and is still an attractive topic for many researchers since it strongly...

... vibration parameters from BTT data is proposed. The proposed method requires only two BTT sensors and applies least mean square algorithm to identify frequency and amplitude of blade vibration. These parameters can be further used as blade health indicators to predict defect growth in the blades. Robustness...

... is measured by noncontact sensors (NCSs) and strain gauges (SGs). The circumferential blade amplitude distribution is found to differ depending on vibration modes and nodal diameters (NDs), but the relative tendency is almost the same for all types of operation at each mode and all NDs. Therefore, the median...

... to provide a baseline for comparison in the event that one batch of water is less pure than another. Because sensor voltage should vary directly with conductivity, correcting results to a common baseline is simple. It was found that the base conductivity did not vary significantly over the course...

... for publication in the J OURNAL OF E NGINEERING FOR G AS T URBINES AND P OWER . Manuscript received August 9, 2017; final manuscript received August 18, 2017; published online November 28, 2017. Editor: David Wisler. 09 08 2017 18 08 2017 Sensors Structural dynamics Vibration...

...Giuseppe Fabio Ceschini; Nicolò Gatta; Mauro Venturini; Thomas Hubauer; Alin Murarasu The reliability of gas turbine (GT) health state monitoring and forecasting depends on the quality of sensor measurements directly taken from the unit. Outlier detection techniques have acquired a major importance...

... manuscript received August 1, 2017; published online November 7, 2017. Editor: David Wisler. 03 07 2017 01 08 2017 Burners Combined Combustion Combustors Energy conversion Flame Fuel combustion Fuels Gas turbine technology Gaseous Measurement techniques Sensors Swirling...

...Giuseppe Fabio Ceschini; Nicolò Gatta; Mauro Venturini; Thomas Hubauer; Alin Murarasu Anomaly detection in sensor time series is a crucial aspect for raw data cleaning in gas turbine (GT) industry. In addition to efficiency, a successful methodology for industrial applications should be also...

...Giuseppe Fabio Ceschini; Nicolò Gatta; Mauro Venturini; Thomas Hubauer; Alin Murarasu Statistical parametric methodologies are widely employed in the analysis of time series of gas turbine (GT) sensor readings. These methodologies identify outliers as a consequence of excessive deviation from...

...: David Wisler. 19 07 2017 25 07 2017 Computational mechanics Experimental Finite element methods Sensors Shells Air foil journal bearings are frequently used to support shafts in rotating devices, for instance in microgas turbines or in rotor systems for fuel cell...

... of the ionized species formed in different zones in the fuel spray. A new approach of defining a number of virtual ion sensing probes was introduced to the model to determine the influence of sensor design and location relative to the spray axis on the signal characteristics. The contribution of the premixed...

... instruments for measurement of the size, velocity, and mass flow rate of pneumatically conveyed particles [ 16 ]. In order to obtain better monitoring accuracy and reliability, electrostatic sensor arrays (ESA) composed of multiple electrostatic sensors have become the trend [ 17 ]. ESA is mostly used...

... estimation methodologies generally depend upon either a mass air flow (MAF) sensor or a manifold absolute pressure (MAP) sensor individually. Methods based on either sensor have their own advantages and disadvantages. Some production vehicles are equipped with both MAF and MAP sensors to offer air charge...

... Wisler. Aerodynamics Droplet Experimental Measurement techniques Sensors Turbines Unsteady Unsteady flows 26 07 2016 15 02 2017 Steam turbines are widely used in power generation and provide the world with more than 60% of its entire generated electrical power...

.... , Hönen , H. , Fröbel , T. , Metzler , T. , and Jeschke , P. , 2015 , “ Measurement Uncertainty Analysis for Multi-Hole Pressure Probes Combined With a Temperature Sensor ,” International Gas Turbine Congress 2015 , pp. 1527 – 1538 . [9] BIPM, IEC, IFCC, ILAC, ISO, IUPAC, IUPAP...

...; final manuscript received July 21, 2016; published online October 18, 2016. Editor: David Wisler. 19 07 2016 21 07 2016 Combustion Combustors Flow induced vibration Sensors Thermoacoustics Flow induced noise Combustion instabilities in practical systems are very...

... with the end goal of producing an onboard aircraft diagnostic sensor. By measuring the amount of light that is transmitted due to the effects of scattering and absorption in the presence of particles over a range of concentrations, a relationship between particle diameters and the laser light extinction...

... not have any related feedback. Recently, explicit torque feedback control has been proposed in the literature using either estimated or measured torques as feedback to control the torque using the slow torque path only. We propose the usage of a surface acoustic wave (SAW) torque sensor to measure...