Computer Modeling of the Defect Detecting in Pumping Units Using Continuous Strain Gauge Data Analysis

2021 ◽  
Author(s):  
Anvar Valeev
Keyword(s):  
Data Analysis ◽  
Computer Modeling ◽  
Strain Gauge ◽  
Gauge Data ◽  
Pumping Units

Unsteady Flow Analysis and Vibratory Stress Predictions for a High Work Single Stage Turbine Blade

2012 ◽  
Author(s):  
Kurt Weber ◽  
Girish Modgil ◽  
Steve Gegg ◽  
Shyam Neerarambam ◽  
Moujin Zhang
Keyword(s):  
Flow Field ◽  
Strain Gauge ◽  
Flow Analysis ◽  
Forced Response ◽  
Single Stage ◽  
Turbine Stage ◽  
Rotating Blade ◽  
Gauge Data ◽  
Unsteady Flow Analysis ◽  
High Work

The flow field in High-Work Single-Stage (HWSS) turbines differs from traditional turbine flow fields. Operating at increased pressure ratios, wakes and trailing edge shocks at the exit of the vane are more likely to cause a vibratory response in the rotating blade. This flow field can produce increased excitation at harmonics that correspond to the vane passing frequency and harmonics higher than the vane passing frequency. In this paper, blade vibratory stresses in a HWSS gas turbine stage are predicted using unsteady pressures from two Rolls-Royce in-house flow codes that employ different phase lagged unsteady approaches. Hydra uses a harmonic storage approach, and the Vane/Blade Interaction (VBI) code uses a direct storage approach. Harmonic storage reduces memory requirements considerably. The predicted stress for four modes at two engine speeds are presented and are compared with rig test strain gauge data to assess and validate the predictive capability of the codes for forced response. Strain gauge data showed the need to consider harmonics higher than the fundamental vane passing frequency for the max power shaft speed and operating at the conditions. Because of this, it was a good case for validation and for comparing the two codes. Overall, it was found that, stress predictions using the Hydra flow code compare better with data. To the best of the authors’ knowledge, this paper is a first in comparing two different phase lagged unsteady approaches, in the context of forced response, to engine rig data for a High-Work Single Stage turbine.

Aerobic Biodegradation of Benzene, Toluene, and Xylene in a Sandy Aquifer-Data Analysis and Computer Modeling

Ground Water ◽  
1989 ◽  
Vol 27 (6) ◽  
pp. 823-834 ◽  
Author(s):  
C. Y. Chiang ◽  
J. P. Salanitro ◽  
E. Y. Chai ◽  
J. D. Colthart ◽  
C. L. Klein
Keyword(s):  
Data Analysis ◽  
Computer Modeling ◽  
Aerobic Biodegradation ◽  
Benzene Toluene ◽  
Sandy Aquifer

Downhole-Gauge-Data Analysis of Openhole Gravel-Packing Treatments: Method and Examples

2018 ◽  
Vol 33 (04) ◽  
pp. 324-334 ◽  
Author(s):  
Amrendra Kumar ◽  
Maye Beldongar ◽  
Daniel Agee ◽  
Bala R. Gadiyar ◽  
Mehmet Parlar
Keyword(s):  
Data Analysis ◽  
Gauge Data ◽  
Gravel Packing

Experimental Measurement of Maximum Bending Stress on Rectangular Aluminum Beam

2015 ◽  
Vol 220-221 ◽  
pp. 413-418
Author(s):  
Riza Gürbüz
Keyword(s):  
Cross Section ◽  
Strain Gauge ◽  
Theoretical Knowledge ◽  
Bending Stress ◽  
Cross Section Area ◽  
Section Area ◽  
Special Software ◽  
Gauge Data ◽  
Bending Stresses ◽  
Aluminum Beam

In this study, maximum bending stresses occurring on the rectangular aluminum beam under various small loads were measured with strain gauge, data acquisition cards and computer. Special software was developed to measure maximum strain and stress on the aluminum beam. Stress values occurring on the aluminum beam under various small loads were measured with strain gauge and those strain values were transmitted to computer directly with data cards. Using the strain, the load and other constant values of the material (Young’s modulus, dimensions, cross section area, load, Poisson’s rate, etc.), the stress values occurring on the beam are calculated and the stress-strain graph is drawn on the screen automatically. In this experimental study, the theoretical knowledge given in the books and experiment results obtained under laboratory conditions were compared with each other. The obtained results were almost 99% similar. Similar studies have characteristics that can be used to measure maximum bending and torsion stresses for real applications in the industry and mobile loading machines.

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