Advanced railgun experimental test results and implications for the future

1992 ◽  
Author(s):  
M. HOLLAND ◽  
P. EGGERS ◽  
S. GUINTO ◽  
R. STEVENSON ◽  
GREGORY COLOMBO
Keyword(s):  
Experimental Test ◽  
Test Results ◽  
The Future

Advanced railgun experimental test results and implications for the future

1993 ◽  
Vol 29 (1) ◽  
pp. 419-424 ◽  
Author(s):  
M.M. Holland ◽  
P.D. Eggers ◽  
S. Guinto ◽  
R.D. Stevenson ◽  
G. Columbo
Keyword(s):  
Experimental Test ◽  
Test Results ◽  
The Future

On axial compressive behavior of steel fiber reinforced concrete confined by FRP

2021 ◽  
pp. 136943322098165
Author(s):  
Hossein Saberi ◽  
Farzad Hatami ◽  
Alireza Rahai
Keyword(s):  
Reinforced Concrete ◽  
Experimental Test ◽  
Steel Fiber ◽  
Experimental Tests ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Test Results ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Frp Confinement

In this study, the co-effects of steel fibers and FRP confinement on the concrete behavior under the axial compression load are investigated. Thus, the experimental tests were conducted on 18 steel fiber-reinforced concrete (SFRC) specimens confined by FRP. Moreover, 24 existing experimental test results of FRP-confined specimens tested under axial compression are gathered to compile a reliable database for developing a mathematical model. In the conducted experimental tests, the concrete strength was varied as 26 MPa and 32.5 MPa and the steel fiber content was varied as 0.0%, 1.5%, and 3%. The specimens were confined with one and two layers of glass fiber reinforced polymer (GFRP) sheet. The experimental test results show that simultaneously using the steel fibers and FRP confinement in concrete not only significantly increases the peak strength and ultimate strain of concrete but also solves the issue of sudden failure in the FRP-confined concrete. The simulations confirm that the results of the proposed model are in good agreement with those of experimental tests.

scholarly journals Analysis of the Correlation between the Static and Fatigue Test Results of the Interlayer Bondings of Asphalt Layers

2016 ◽  
Vol 62 (1) ◽  
pp. 83-98 ◽  
Author(s):  
A. Szydło ◽  
K. Malicki
Keyword(s):  
Fatigue Life ◽  
Fatigue Test ◽  
Asphalt Mixture ◽  
Fatigue Tests ◽  
Test Results ◽  
Static Tests ◽  
Bonding State ◽  
Road Pavement ◽  
The Future ◽  
Pavement Structure

Abstract The bonding state of the asphalt layers in a road pavement structure significantly affects its fatigue life. These bondings, therefore, require detailed tests and optimization. In this paper, the analyses of the correlation between the results of laboratory static tests and the results of fatigue tests of asphalt mixture interlayer bondings were performed. The existence of the relationships between selected parameters was confirmed. In the future, the results of these analyses may allow for assessment of interlayer bondings’ fatigue life based on the results of quick and relatively easy static tests.

FRP Reinforcement to Retrofit Bridge Pier After Repair: Experimental Test Results

2021 ◽  
pp. 449-458
Author(s):  
Junqing Xue ◽  
Davide Lavorato ◽  
Gabriele Fiorentino ◽  
Alessandro Vittorio Bergami ◽  
Bruno Briseghella ◽  
...  
Keyword(s):  
Experimental Test ◽  
Bridge Pier ◽  
Test Results ◽  
Frp Reinforcement

The Experimental Test Results of a Two-Section Linear Induction Launcher

2020 ◽  
Vol 48 (11) ◽  
pp. 4041-4047
Author(s):  
Cagdas Tunceroglu ◽  
Ugur Hasirci ◽  
Dincer Maden ◽  
Abdulkadir Balikci
Keyword(s):  
Experimental Test ◽  
Test Results ◽  
Linear Induction

A General Model for Two-Point Contact Dry-Friction Whip and Whirl: Further Advancements and Experimental Test Results

2015 ◽  
Author(s):  
Jason C. Wilkes ◽  
Tim Allison
Keyword(s):  
Experimental Test ◽  
General Model ◽  
Dry Friction ◽  
Point Contact ◽  
Current Work ◽  
Test Results ◽  
Air Bearings ◽  
Test Rig ◽  
Single Location ◽  
Arbitrary Phase

Numerous papers have investigated the behavior of dry-friction whip and whirl; most of them consider contact between a rotor and stator at a single location. For rotors running on multiple magnetic bearings, air bearings, or bushings, equipment failure may result in rub at more than one location. For these cases, it is important to have an analytical model that characterizes possible regions of two-point contact dry-friction whip and whirl. The current work presents a general model to predict possible whirl regions for multi-contact dry-friction whip and whirl, allowing for an arbitrary phase between contact locations. In theory this method can be applied to more than two contact locations; however, a two-point contact example case is developed and compared to results from an experimental test rig developed to demonstrate multi-contact dry-friction whip and whirl in the current work.

Analysis and Design Recommendations for the Collapse of a Concrete Silo

2011 ◽  
Vol 250-253 ◽  
pp. 2877-2880 ◽  
Author(s):  
Guang Lin Yuan ◽  
Lu Dan Tian
Keyword(s):  
Reinforced Concrete ◽  
Concrete Strength ◽  
Structure Design ◽  
Test Results ◽  
Reinforcing Bars ◽  
Design Recommendations ◽  
Analysis And Design ◽  
The Future ◽  
Design And Construction

Accidents of the cement manufacturers’ reinforced concrete silo structures frequently occurred currently in China, because of quality problems, causing enormous losses. The collapse status of a cement raw meal silo is investigated. Combined with the test results of the location and spacing of silo wall’s reinforcing bars, concrete strength, cracks and defects, the reasons for collapse of silo wall are analyzed and design recommendations for concrete silo structures are made. This can give reference to reinforced concrete silo structure design and construction in the future.

Study on Preparation of Super Clean Coal with Selective Flocculation-Flotation Technology on Taixi Anthracite

2011 ◽  
Vol 383-390 ◽  
pp. 6139-6144
Author(s):  
Jin Xia Zhang ◽  
Shu Xian Liu ◽  
Yi Miao Nie ◽  
Fu Sheng Niu
Keyword(s):  
Experimental Methods ◽  
Optimum Combination ◽  
Pulp Density ◽  
Test Results ◽  
Selective Flocculation ◽  
Clean Coal ◽  
Order Interaction ◽  
The Future ◽  
Main Factors ◽  
Coal Petrology

Based on the coal petrology character of Taixi anthracite, the selective flocculation-flotation preparation of super clean coal is studied. The influences factors of the type and dosage of dispersant, the type and dosage of flocculant, pulp density etc etc on its effect is analyzed, and, through the orthogonal experimental methods, the salience order, interaction, and the optimum combination of the main factors is revealed. The finally test results indicate that we can obtain an ash about 1.29% at a yield of 41.85%％ super clean coal, thus will provide basis for the future super clean coal industrialization.

scholarly journals Bearing Capacity of Circular Footing on Sand Deposit

2015 ◽  
Vol 773-774 ◽  
pp. 1518-1523 ◽  
Author(s):  
Aminaton Marto ◽  
Mohsen Oghabi ◽  
Nor Zurairahetty Mohd Yunus
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Experimental Test ◽  
Static Load ◽  
Sandy Soils ◽  
Soil Parameters ◽  
Test Results ◽  
Finite Element Software ◽  
Sand Deposit ◽  
Circular Footing

Bearing capacity and settlement are two important parameters in geotechnical engineering. The bearing capacity of circular foundations on sandy soils is important to geotechnical practicing engineers. Design of foundations includes soil parameters and bearing capacity of foundation. This paper presents the results of laboratory experimental model tests of circular footings supported on sand deposit under static load. The finite element software Abaqus is used to compare the results. The effects of the relative density of the sand (30%, 50%, and 70%) and the diameter of circular footing (75 mm and 100 mm) are investigated. It can be concluded that the experimental test results fit quite well with the results of numerical method.

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