scholarly journals Preliminary test results in support of integrated EPP and SMT design methods development

2016 ◽  
Author(s):  
Yanli Wang ◽  
Robert I. Jetter ◽  
T. -L. Sham
Keyword(s):  
Preliminary Test ◽  
Design Methods ◽  
Test Results ◽  
Methods Development

scholarly journals Test methods development of biomechanics of human movement utilizing the kinesiological electromyography

2019 ◽  
Vol 20 (1-2) ◽  
pp. 295-298
Author(s):  
Mateusz Kukla ◽  
Bartosz Wieczorek ◽  
Łukasz Warguła
Keyword(s):  
Human Movement ◽  
Preliminary Test ◽  
Test Methods ◽  
Test Results ◽  
Methods Development ◽  
Measurement Results ◽  
Patient Preparation ◽  
Selection Of

The article presents the issues concerning the development of methods for performing human biomechanics research utilizing kinesiological electromyography. The procedures concerning the selection of the location of electrodes, patient preparation for testing, conducting the experiment and the development of measurement results are dis-cussed in detail. Selected preliminary test results were also presented.

High-cycle fatigue tests of pretensioned concrete beams

PCI Journal ◽  
2022 ◽  
Vol 67 (1) ◽  
Author(s):  
Jörn Remitz ◽  
Martin Empelmann
Keyword(s):  
Fatigue Life ◽  
High Cycle Fatigue ◽  
Concrete Beams ◽  
Fatigue Behavior ◽  
Fatigue Tests ◽  
Design Methods ◽  
Test Results ◽  
Cycle Fatigue ◽  
Pretensioned Concrete ◽  
Current Design

Pretensioned concrete beams are widely used as bridge girders for simply supported bridges. Understanding the fatigue behavior of such beams is very important for design and construction to prevent fatigue failure. The fatigue behavior of pretensioned concrete beams is mainly influenced by the fatigue of the prestressing strands. The evaluation of previous test results from the literature indicated a reduced fatigue life in the long-life region compared with current design methods and specifications. Therefore, nine additional high-cycle fatigue tests were conducted on pretensioned concrete beams with strand stress ranges of about 100 MPa (14.5 ksi). The test results confirmed that current design methods and specifications overestimate the fatigue life of embedded strands in pretensioned concrete beams.

scholarly journals Flame Spraying of Aluminum Coatings Reinforced with Particles of Carbonaceous Materials as an Alternative for Laser Cladding Technologies

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3467 ◽  
Author(s):  
Artur Czupryński
Keyword(s):  
Laser Cladding ◽  
Carbon Materials ◽  
High Strength ◽  
Preliminary Test ◽  
Flame Spraying ◽  
Test Results ◽  
Carbonaceous Materials ◽  
Aluminum Coatings ◽  
Cylinder Liners ◽  
Near Future

The article presents results of the preliminary research of mechanical properties of flame-sprayed aluminum coatings reinforced with carbon materials made on the construction steel S235J0 substrate. For reinforcement the following carbon materials were used: carbon nanotubes Nanocyl NC 7000 (0.5 wt.% and 1 wt.%) and carburite (0.5 wt.%). The properties evaluation was made using metallographic macroscope and microscope, chemical composition, microhardness, abrasion and erosion resistance studies. The obtained results were compared with aluminum powder coatings (EN AW 1000 series). It was proved that the flame spraying of aluminum coatings reinforced with particles of carbonaceous materials can be an effective alternative for laser cladding technology. The preliminary test results will be successively extended by further experiments to contribute in the near future to develop innovative technologies, that can be implemented in the automotive industry for production of components with high strength, wear resistance, good thermal conductivity and low density, such as brake shoes, cylinder liners, piston rings and gears.

Particulate and Sulfur Oxides Emissions From a 60-MW Heavy Duty Gas Turbine Burning No. 2 Distillate Fuel: Methods Development and Test Results

1982 ◽  
Author(s):  
G. L. Touchton ◽  
M. B. Hilt
Keyword(s):  
Sulfur Dioxide ◽  
Gas Turbine ◽  
Sulfur Oxides ◽  
Test Results ◽  
Heavy Duty ◽  
Methods Development ◽  
Fuel Ash ◽  
Heavy Duty Gas Turbine ◽  
Extreme Care ◽  
Distillate Fuel

A method for the measurement of particulate and sulfur oxides emissions has been developed and tested in the laboratory and the field. The development shows that changes in analysis methods, procedures, and materials are necessary in order to adapt standard USEPA methods to gas turbine conditions. In particular, extreme care must be taken to prevent the formation of pseudo particulate from sulfur dioxide. The field results demonstrate that a G.E. MS7001B emits less than 10 lbm/hr of total particulate if the fuel ash and sulfur content are suitably restricted.

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