Performance of Buried Steel-Reinforced High-Density Polyethylene (SRHDPE) Pipes in a Shallow Cover under a Test Truck Load in a Full-Scale Field Test

2016 ◽  
Author(s):  
Deep Kumar Khatri ◽  
Jie Han ◽  
Robert L. Parsons ◽  
James J. Brennan
Keyword(s):  
Field Test ◽  
High Density Polyethylene ◽  
Full Scale ◽  
High Density ◽  
Scale Field ◽  
Truck Load

scholarly journals Full-Scale Field Test of Wake Steering

2017 ◽  
Vol 854 ◽  
pp. 012013 ◽  
Author(s):  
Paul Fleming ◽  
Jennifer Annoni ◽  
Andrew Scholbrock ◽  
Eliot Quon ◽  
Scott Dana ◽  
...  
Keyword(s):  
Field Test ◽  
Full Scale ◽  
Scale Field

Development, Installation, and Operating Results of a Steam Injection System (STIG™) in a General Electric LM5000 Gas Generator

1987 ◽  
Vol 109 (3) ◽  
pp. 257-262 ◽  
Author(s):  
J. B. Burnham ◽  
M. H. Giuliani ◽  
D. J. Moeller
Keyword(s):  
Natural Gas ◽  
Field Test ◽  
Power Output ◽  
Steam Injection ◽  
Supply System ◽  
Full Scale ◽  
Injection System ◽  
Test Results ◽  
Gas Generator ◽  
Scale Field

This paper describes the first full-scale field test of a steam injection system for a natural-gas-fired G.E. LM5000 gas generator for the purpose of: (a) decreased exhaust emissions, (b) increased power output, and (c) improved efficiency. It discusses the steam supply system, engine features, test results, and plant economics for steam injection into the combustor and compressor discharge sections of the LM5000 at rates up to 65,000 lb/hr (29,510 kg/hr).

Full-scale field test for buried glass-fiber reinforced plastic pipe with large diameter

2015 ◽  
Vol 120 ◽  
pp. 167-173 ◽  
Author(s):  
Young-Geun Lee ◽  
Sun-Hee Kim ◽  
Joon-Seok Park ◽  
Jun Won Kang ◽  
Soon-Jong Yoon
Keyword(s):  
Glass Fiber ◽  
Field Test ◽  
Large Diameter ◽  
Full Scale ◽  
Glass Fiber Reinforced Plastic ◽  
Fiber Reinforced Plastic ◽  
Plastic Pipe ◽  
Glass Fiber Reinforced ◽  
Reinforced Plastic ◽  
Scale Field

Measuring the load–deformation response of rockfill columns by a full-scale field test on a natural riverbank

2011 ◽  
Vol 48 (7) ◽  
pp. 1032-1043
Author(s):  
Kendall J. Thiessen ◽  
Marolo C. Alfaro ◽  
James A. Blatz
Keyword(s):  
Field Test ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Site Investigation ◽  
Test Site ◽  
Full Scale ◽  
Shear Stresses ◽  
Scale Field ◽  
Column Technology ◽  
Rockfill Columns

A full-scale field test loading of a riverbank stabilized with rockfill columns was used to measure the load–deformation characteristics of the reinforced slope. The test site is located on the natural banks of the Red River in the city of Winnipeg. Rockfill column technology has evolved from granular shear key methods for stabilizing slopes. The relatively weak lacustrine clays are stabilized with compacted columns of limestone rockfill. The columns typically extend through the clay stratum and are anchored in the underlying till. The project involved an extensive site investigation, and soils characterization program in preparation for the field test. Eleven 2.1 m diameter columns were tested by loading the bank with 1920 t of fill. The deformations were measured with standard and in-place inclinometers. The pore-water pressure response of the in situ soils was continuously monitored with vibrating wire piezometers. The results have shown that shear stresses are mobilized along the entire length of the column when subjected to loading, and that complete densification is important in minimizing deformations. This paper discusses the design and construction of the field test and presents the results of the monitoring programs.

Development of a 100-km/h Reusable High-Molecular Weight/High-Density Polyethylene Truck-Mounted Attenuator

1998 ◽  
Vol 1647 (1) ◽  
pp. 75-88
Author(s):  
John F. Carney ◽  
Subhasish Chatterjee ◽  
Richard B. Albin
Keyword(s):  
Molecular Weight ◽  
Kinetic Energy ◽  
High Molecular Weight ◽  
High Density Polyethylene ◽  
Full Scale ◽  
High Density ◽  
Crash Test ◽  
Crash Testing ◽  
Impact Attenuation ◽  
Risk Parameters

A reusable truck-mounted attenuator has been developed that dissipates kinetic energy through the lateral deformation of a nested cluster of high-molecular weight/high-density polyethylene cylinders. This 100-km/h impact attenuation device, called the Vanderbilt truck-mounted attenuator (VTMA), satisfies the crash testing requirements of NCHRP Report 350. It has been approved by the Federal Highway Administration for use on the national highway system under these NCHRP Report 350 guidelines. Most impact attenuation devices currently employed require the replacement of damaged structural components and spent-energy-dissipating elements following an impact event. Until these repairs and refurbishments are carried out, these safety devices are largely ineffective because they are unable to dissipate kinetic energy in a subsequent impact in an acceptable manner such that relevant occupant risk parameters are within prescribed limits. The VTMA is a reusable and self-restorative truck-mounted attenuator. It can dissipate large amounts of kinetic energy, undergo significant deformations and strains without fracturing, and then, essentially, regain its original shape and energy-dissipation potential on removal of the load. The VTMA design was optimized through finite-element modeling using DYNA3D. This inexpensive modeling tool resulted in a reduction in the number of expensive full-scale crash tests required to develop the system. Computer modeling can optimize the probability for success of a given full-scale crash test, removing the trial-and-error approach to appurtenance design.

scholarly journals Weight-scheduling for linear time-variant model predictive wind turbine control toward field testing

2021 ◽  
Author(s):  
Thorben Wintermeyer-Kallen ◽  
Sebastian Dickler ◽  
János Zierath ◽  
Thomas Konrad ◽  
Dirk Abel
Keyword(s):  
Wind Turbine ◽  
Field Test ◽  
Control Method ◽  
Linear Time ◽  
Field Tests ◽  
Full Scale ◽  
Load Range ◽  
Operating Range ◽  
Scale Field ◽  
Constraints Model

AbstractModern multi-megawatt wind turbines require powerful control algorithms which consider several control objectives at the same time and respect process constraints. Model predictive control (MPC) is a promising control method and has been a research topic for years. So far, very few studies evaluated MPC algorithms in field tests. This work aims to prepare a real-time MPC system for a full-scale field test in a 3 MW wind turbine. To this end, we introduce a weight-scheduling scheme for a linear time-variant MPC in order to ensure control operation over the entire operating range from the partial to the full load range. We use a rapid control prototyping process, in particular with comprehensive software-in-the-loop (SiL) tests, in order to design and validate the MPC system for the field test.In this contribution, we present the implementation of the linear time-variant MPC with weight-scheduling to be tested in the field test. With the weight-scheduling for the optimization problem inside the MPC, we achieved good performance over the entire operating range of the wind turbine. In the SiL tests, the proposed MPC algorithm achieved loads, comparable to the baseline controller of the wind turbine and improved the reference tracking of the power output and the rotational speed. The proposed linear time-variant MPC with weight-scheduling is fully validated in the presented software-in-the-loop tests and is ready for full-scale field test in the 3 MW wind turbine. We present the experimental field test results of the introduced MPC system in a separated contribution.

scholarly journals Full-scale field test of a model predictive control system for a 3 MW wind turbine

2021 ◽  
Author(s):  
Sebastian Dickler ◽  
Thorben Wintermeyer-Kallen ◽  
János Zierath ◽  
Reik Bockhahn ◽  
Dirk Machost ◽  
...  
Keyword(s):  
Model Predictive Control ◽  
Wind Turbine ◽  
Field Test ◽  
Predictive Control ◽  
Linear Time ◽  
Full Scale ◽  
The Real ◽  
Rapid Control ◽  
Scale Field ◽  
Rapid Control Prototyping

AbstractModel predictive control (MPC) is a strong candidate for modern wind turbine control. While the design of model predictive wind turbine controllers in simulations has been extensively investigated in academic studies, the application of these controllers to real wind turbines reveals open research challenges. In this work, we focus on the validation of a linear time-variant MPC system for a 3 MW wind turbine in a full-scale field test. First, the study proves the MPC’s capability to control the real wind turbine in the partial load region. Compared to the turbine’s baseline PID controller, the MPC system offers similar results for the electrical power output and for the occurring mechanical loads. Second, the study validates a previously proposed, simulation-based rapid control prototyping process for a systematic MPC development. The systematic development process allows to completely design and parameterize the MPC system in a simulative environment independent of the real wind turbine. Through the rapid control prototyping process, the MPC commissioning in the wind turbine’s programmable logic controller can be realized within a few hours without any modifications required in the field. Thus, this study establishes the proof of concept for a linear time-variant MPC system for a 3 MW wind turbine in a full-scale field test and bridges the gap between the control design and field testing of MPC systems for wind turbines in the multi-megawatt range.

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