Theoretical and Experimental Analysis for the Load Capacity of the Cone Tightening Assemblies

2018 ◽  
pp. 437-445
Author(s):  
Geonea Ionut ◽  
Dumitru Nicolae ◽  
Copilusi Cristian ◽  
Dumitru Ilie ◽  
Oana Otat ◽  
...  
Keyword(s):  
Experimental Analysis ◽  
Load Capacity

scholarly journals Experimental Analysis and Control of a Wind-Generator System through a DC-DC Boost Converter for Extremum Seeking

2021 ◽  
Vol 11 (1) ◽  
pp. 6714-6718
Author(s):  
T. Ahmed ◽  
M. H. Baloch ◽  
N. Khan ◽  
G. Mehr ◽  
B. A. Mirjat ◽  
...  
Keyword(s):  
Power Generation ◽  
Wind Power ◽  
Experimental Analysis ◽  
Energy Demand ◽  
Load Capacity ◽  
Tracking System ◽  
Boost Converter ◽  
Living Standard ◽  
Generator System ◽  
Wind Generator

The advancement in technology has significantly improved the living standard, having a direct impact on the quality of life, at the cost of ever-increasing energy demand. Renewable energy resources such as the Wind Energy Conversion System (WECS) provide variable power generation. The current paper presents the results of the experimental analysis on the control of the wind-generator system based on SCIG through a dc/dc boost converter for extremum power-seeking. Since the Squirrel Cage Induction Generator (SCIG) is widely used in wind industries for power generation, their performance will be compared. The proposed system can operate either on a variable or at a nearly constant speed, with higher load capacity, while its power consumption is comparatively lower. The research will enhance the wind power at different wind speeds, to acquire the extremum power point tracking system from the wind power energy system by using two different machines.

scholarly journals Experimental analysis of bolts employed as shear connectors in circular concrete-filled tube columns

2019 ◽  
Vol 12 (2) ◽  
pp. 337-370 ◽  
Author(s):  
E. M. XAVIER ◽  
J. G. R. NETO ◽  
A. M. C. SARMANHO ◽  
L. ROQUETE ◽  
L. G. C. De PAULA
Keyword(s):  
Theoretical Analysis ◽  
Experimental Analysis ◽  
Load Capacity ◽  
Concrete Strength ◽  
Steel Tube ◽  
Experimental Results ◽  
Shear Connectors ◽  
Concrete Confinement ◽  
Push Out ◽  
Theoretical Results

Abstract This paper presents experimental and theoretical analysis of bolts employed as shear connectors in circular concrete-filled steel tube columns (CFTs). The theoretical results, obtained from ABNT NBR 16239:2013 formulations, were compared with the experimental results. A series of push-out tests were carried out, where the diameter and length of the bolts, the number of connectors and the concrete strength were varied. From the experimental results, it was observed that the equations from ABNT NBR 16239:2013 are conservative. Therefore, it is proposed an adjustment to the formulations in order to consider the concrete confinement. It was also verified that increments in the diameter and the length of the bolt increase the load capacity of the connector. However, the variation of the quantity of bolts and the concrete strength did not interfere in the load capacity.

EXPERIMENTAL ANALYSIS OF THE LOAD CAPACITY AND REPEATABILITY OF PRELOADED BOLTED JOINTS

Tribologia ◽  
2020 ◽  
Vol 292 (4) ◽  
pp. 71-77
Author(s):  
Marcin Szczęch ◽  
Wojciech Horak
Keyword(s):  
Axial Force ◽  
Experimental Analysis ◽  
Load Capacity ◽  
Bolted Joints ◽  
Test Results ◽  
Bolted Joint ◽  
Breaking Force ◽  
Torque Wrench ◽  
The Common ◽  
Lubrication Conditions

Bolted joints are among the most widespread and most important detachable connections used in mechanical engineering and construction. The common use of this connection group is reflected in the variety of types of screw connections. There are several geometric and material factors, and consequently tribological ones, that determine the load capacity and, which is often of key importance, the repeatability of the bolted joint. The paper presents a description of the test stand and the test results of preloaded bolted joints for different lubrication conditions. The measured parameters were the breaking force value of a double lap bolted joint and its repeatability and the axial force repeatability of the bolts tightened by an electronic torque wrench.

scholarly journals Experimental analysis of reinforcing columns of reinforced concrete, with anchor steel bolts

2016 ◽  
Vol 9 (5) ◽  
pp. 796-823
Author(s):  
A. C. MESQUITA ◽  
A. S. ROCHA ◽  
R. G. DELALIBERA ◽  
W. A. DA SILVA
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Cross Section ◽  
Experimental Analysis ◽  
Load Capacity ◽  
Concrete Columns ◽  
Self Compacting Concrete ◽  
Reinforced Concrete Columns ◽  
Structural Rehabilitation ◽  
Steel Bolts

Abstract This article presents a columns reinforcement experimental study, with the use of anchor steel bolts and fill with self-compacting concrete. Were tested five columns of reinforced concrete subjected to flexion-compression: two columns were used as reference, and a cross-section equal to 120 x 250 mm; with a monolithic section equal to 155 x 250 mm cross section of the same reinforced columns and three which were initially molded with a 120 x 250 mm section and subsequently received a layer of 35 mm thick self-compacting concrete in the compressed side. Despite the studs do not present break, there was peeling of the reinforcement layer. The results indicate the possibility of using this method in reinforcing structural rehabilitation of reinforced concrete columns, with increase in load capacity on average equal to 403% in relation to the column reference.

scholarly journals Experimental analysis on the combined effects of corrosion and fatigue in reinforced concrete beams

2019 ◽  
Vol 19 (3) ◽  
pp. 69-81
Author(s):  
Kássio Joe Stein ◽  
Ângela Gaio Graeff
Keyword(s):  
Reinforced Concrete ◽  
Experimental Analysis ◽  
Concrete Beams ◽  
Load Capacity ◽  
Concrete Bridges ◽  
Reinforced Concrete Beams ◽  
Combined Processes ◽  
Combined Effects ◽  
Reinforced Concrete Bridges ◽  
Loss Of Mass

Abstract Infrastructure elements, especially reinforced concrete bridges and viaducts, are exposed to a combination of degrading processes throughout their life cycle, such as corrosion and fatigue. The combined effects of both processes are known to be more harmful to the structure than the sum of both deterioration processes considered individually. Due to the limited amount of studies in this field, this research aims to evaluate, by experimental analysis, the combined effects of fatigue and corrosion on reinforced concrete beams. Eight beams measuring 7 x 14 x 130 cm were cast and divided in four groups of 2 beams each: one group for reference beams, one for corroded beams with a loss of mass of 10%, one for beams subjected to 200,000 cycles and the last for corroded fatigued beams. The results show that the combined processes drastically reduce the load capacity of the beams by less than half compared to the reference beams. It was also observed that fatigue life decreased and the failure mode changed to fragile.

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