scholarly journals Experimental study on the flexural behavior of structural insulated sandwich timber panels

2021 ◽  
Author(s):  
Aleem Shahzad Butt
Keyword(s):  
Experimental Testing ◽  
Limit State ◽  
Operating Conditions ◽  
Flexural Behavior ◽  
Creep Tests ◽  
Design Strength ◽  
Composite Action ◽  
Structural Capacity ◽  
Frame Buildings ◽  
Wood Frame

A series of flexural test and creep tests were conducted on 53 OSB structural insulated sandwich timber panels to predict their behavior when subjected to gravity loading when used in residential and low rise nonresidential buildings. The experiments were designed and performed to test full-scale panels for roof and floor residential construction. The structural adequacy of the developed sandwich panel system is investigated with respect to the effectiveness of the foam core in providing composite action required to meet both strength and serviceability limit-state design reruirements per Canadian Standards for timber design. Strength requirements included flexure and shear, while serviceability check included limiting deflection under operating conditions as well as creep performance under sustained loading. Results from experimental testing were used to draw conclusions with respect the structural qualifications for these SIPs to be "as good as" the structural capacity of conventional wood-frame buildings

scholarly journals Experimental study on the flexural behavior of structural insulated sandwich timber panels

2021 ◽  
Author(s):  
Aleem Shahzad Butt
Keyword(s):  
Experimental Testing ◽  
Limit State ◽  
Operating Conditions ◽  
Flexural Behavior ◽  
Creep Tests ◽  
Design Strength ◽  
Composite Action ◽  
Structural Capacity ◽  
Frame Buildings ◽  
Wood Frame

A series of flexural test and creep tests were conducted on 53 OSB structural insulated sandwich timber panels to predict their behavior when subjected to gravity loading when used in residential and low rise nonresidential buildings. The experiments were designed and performed to test full-scale panels for roof and floor residential construction. The structural adequacy of the developed sandwich panel system is investigated with respect to the effectiveness of the foam core in providing composite action required to meet both strength and serviceability limit-state design reruirements per Canadian Standards for timber design. Strength requirements included flexure and shear, while serviceability check included limiting deflection under operating conditions as well as creep performance under sustained loading. Results from experimental testing were used to draw conclusions with respect the structural qualifications for these SIPs to be "as good as" the structural capacity of conventional wood-frame buildings

scholarly journals Experimental Study On The Flexural Behavior Of Structural Insulated Headers

2021 ◽  
Author(s):  
Dana Benadova
Keyword(s):  
Oriented Strand Board ◽  
Experimental Testing ◽  
Residential Buildings ◽  
Limit State ◽  
Operating Conditions ◽  
Flexural Behavior ◽  
Design Strength ◽  
Structural Capacity ◽  
Wood Frame ◽  
Flexural Tests

A series of flexural tests were conducted on 18 structural insulated header panels with timber flanges and Oriented Strand Board (OSB) webs to predict their behavior when subject to gravity loading when used in residential and low rise non-residential buildings. The experiments were designed and performed to test full-scale Structural Insulated Panels (SIPs) headers for exterior or interior wall residential construction. The structural adequacy of the header panels of various sizes is investigated in order to meet both strength and serviceability limit-state design requirements per Canadian Standards for timber design. Strength requirements included flexure and shear, while serviceability check included limiting deflection under operating conditions. Results from experimental testing were used to draw conclusions with respect to the structural qualifications for these SIP headers to be "as good as" the structural capacity of conventional wood-frame buildings.

scholarly journals Experimental Study On The Flexural Behavior Of Structural Insulated Headers

2021 ◽  
Author(s):  
Dana Benadova
Keyword(s):  
Oriented Strand Board ◽  
Experimental Testing ◽  
Residential Buildings ◽  
Limit State ◽  
Operating Conditions ◽  
Flexural Behavior ◽  
Design Strength ◽  
Structural Capacity ◽  
Wood Frame ◽  
Flexural Tests

A series of flexural tests were conducted on 18 structural insulated header panels with timber flanges and Oriented Strand Board (OSB) webs to predict their behavior when subject to gravity loading when used in residential and low rise non-residential buildings. The experiments were designed and performed to test full-scale Structural Insulated Panels (SIPs) headers for exterior or interior wall residential construction. The structural adequacy of the header panels of various sizes is investigated in order to meet both strength and serviceability limit-state design requirements per Canadian Standards for timber design. Strength requirements included flexure and shear, while serviceability check included limiting deflection under operating conditions. Results from experimental testing were used to draw conclusions with respect to the structural qualifications for these SIP headers to be "as good as" the structural capacity of conventional wood-frame buildings.

scholarly journals Flexural Creep Effects On Permanent Wood Foundation Made Of Structural Insulated Foam-Timber Panels

2021 ◽  
Author(s):  
Mahmoud Shaaban Sayed Ahmed
Keyword(s):  
Experimental Testing ◽  
Creep Behaviour ◽  
Expanded Polystyrene ◽  
Load Test ◽  
Soil Pressure ◽  
Creep Tests ◽  
Structural Capacity ◽  
Wood Frame ◽  
Term Creep

A Permanent Wood Foundation (PWF) is a panel composed of expanded polystyrene insulation and preserved stud cores laminated between oriented-strand boards and preserved plywood. This thesis presents the experimental testing on selected PWFs' sizes to investigate their long-term creep behaviour under sustained soil pressure. The long-term creep tests were performed over eight months, followed by loading the tested panels to destruction to determine their axial compressive strength. The ultimate load test results showed that the structural qualification of PWF is "as good as" the structural capacity of the conventional wood-frame buildings. The obtained experimental ultimate compressive resistance and flexural resistance, along with the developed long-term creep deflection of the wall under lateral soil pressure can be used in the available Canadian Wood Council (CWC) force-moment interaction equation to establish design tables of such wall panels under gravity loading and soil pressure.

scholarly journals Flexural Creep Effects On Permanent Wood Foundation Made Of Structural Insulated Foam-Timber Panels

2021 ◽  
Author(s):  
Mahmoud Shaaban Sayed Ahmed
Keyword(s):  
Experimental Testing ◽  
Creep Behaviour ◽  
Expanded Polystyrene ◽  
Load Test ◽  
Soil Pressure ◽  
Creep Tests ◽  
Structural Capacity ◽  
Wood Frame ◽  
Term Creep

A Permanent Wood Foundation (PWF) is a panel composed of expanded polystyrene insulation and preserved stud cores laminated between oriented-strand boards and preserved plywood. This thesis presents the experimental testing on selected PWFs' sizes to investigate their long-term creep behaviour under sustained soil pressure. The long-term creep tests were performed over eight months, followed by loading the tested panels to destruction to determine their axial compressive strength. The ultimate load test results showed that the structural qualification of PWF is "as good as" the structural capacity of the conventional wood-frame buildings. The obtained experimental ultimate compressive resistance and flexural resistance, along with the developed long-term creep deflection of the wall under lateral soil pressure can be used in the available Canadian Wood Council (CWC) force-moment interaction equation to establish design tables of such wall panels under gravity loading and soil pressure.

scholarly journals Improving Blowout Performance of the Conical Swirler Combustor by Employing Two Parts of Fuel at Low Operating Condition

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1681
Author(s):  
Yixiang Yuan ◽  
Qinghua Zeng ◽  
Jun Yao ◽  
Yongjun Zhang ◽  
Mengmeng Zhao ◽  
...  
Keyword(s):  
Distribution Ratio ◽  
Performance Enhancement ◽  
Experimental Testing ◽  
Stability Boundary ◽  
Operating Conditions ◽  
Nox Emission ◽  
Combustion Stability ◽  
Gas Temperature ◽  
Contact Ratio ◽  
Fuel Distribution

Aiming at the problem of the narrow combustion stability boundary, a conical swirler was designed and constructed based on the concept of fuel distribution. The blowout performance was studied at specified low operating conditions by a combination of experimental testing and numerical simulations. Research results indicate that the technique of the fuel distribution can enhance the combustion stability and widen the boundary of flameout within the range of testing conditions. The increase of the fuel distribution ratio improves the combustion stability but leads to an increase in NOx emission simultaneously. The simulation results show the increase of the fuel distribution ratio causes contact ratio increase in the area of lower reference velocity and gas temperature increase. The increased contact ratio and temperature contribute to the blowout performance enhancement, which is identical to the analysis result of the Damkohler number. The reported work in this paper has potential application value for the development of an industrial burner and combustor with high stability and low NOx emission, especially when the combustion system is required to be stable and efficient at low working conditions.

Wind Performance Enhancement Strategies for Residential Wood-Frame Buildings

2018 ◽  
Vol 32 (3) ◽  
pp. 04018024 ◽  
Author(s):  
Hassan Masoomi ◽  
Mohammad R. Ameri ◽  
John W. van de Lindt
Keyword(s):  
Performance Enhancement ◽  
Frame Buildings ◽  
Wood Frame

Experimental testing of open pit dump trucks in operating conditions

2020 ◽  
pp. 530-542
Author(s):  
A. G. Zhuravlev ◽  
M. V. Isakov
Keyword(s):  
Power Plants ◽  
Experimental Testing ◽  
Operating Conditions ◽  
Open Pit ◽  
Dump Truck ◽  
Experimental Measurements ◽  
Complex Data ◽  
Special Unit ◽  
Operating Modes ◽  
Dump Trucks

The high importance of optimizing the operation of quarry transport is confirmed by the leading share of its costs in the total cost of mining. The current direction of optimization is the development and implementation of digital technologies for processing complex data on the parameters of transport vehicles. The solution of the above issues should be based on the results of scientific research on the collection and processing of information. Developed a set of techniques to perform experimental measurements of working parameters of mining dump trucks as part of a special unit experiments, and long monitoring measurements. A set of equipment for performing experimental measurements, as well as its installation on a dump truck is presented. The data of experimental measurements and a methodical approach to their analysis are presented. In particular, it shows the identification of operating modes of the power plant and the construction of the load diagram, the identification of elements of the transport cycle, etc. The approach to substantiation of innovative designs of power plants adapted to the conditions of a particular quarry is shown on the example of calculated schedules of energy consumption and reserve of recovery of braking energy. The proposed hardware-methodical complex is a research model for the development of methods for automated data collection and processing in the formation of elements of digital mining production.

Design of an Air-Cooled Radial Turbine: Part 1 — Computational Modelling

2018 ◽  
Author(s):  
Yang Zhang ◽  
Tomasz Duda ◽  
James A. Scobie ◽  
Carl M. Sangan ◽  
Colin D. Copeland ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Experimental Testing ◽  
Temperature Drop ◽  
Computational Modelling ◽  
Operating Conditions ◽  
Inlet Temperature ◽  
Topology Optimisation ◽  
Internal Cooling ◽  
Element Analysis ◽  
Radial Turbine

This paper is part of a two-part publication that aims to design, simulate and test an internally air cooled radial turbine. To achieve this, the additive manufacturing process, Selective Laser Melting (SLM), was utilized to allow internal cooling passages within the blades and hub. This is, to the authors’ knowledge, the first publication in the open literature to demonstrate an SLM manufactured, cooled concept applied to a small radial turbine. In this paper, the internally cooled radial turbine was investigated using a Conjugate Heat Transfer (CHT) numerical simulation. Topology Optimisation was also implemented to understand the areas of the wheel that could be used safely for cooling. In addition, the aerodynamic loss and efficiency of the design was compared to a baseline non-cooled wheel. The experimental work is detailed in Part 2 of this two-part publication. Given that the aim was to test the rotor under representative operating conditions, the material properties were provided by the SLM technology collaborator. The boundary conditions for the numerical simulation were derived from the experimental testing where the inlet temperature was set to 1023 K. A polyhedral unstructured mesh made the meshing of internal coolant plenums including the detailed supporting structures possible. The simulation demonstrated that the highest temperature at the blade leading edge was 117 K lower than the uncooled turbine. The coolant mass flow required by turbine was 2.5% of the mainstream flow to achieve this temperature drop. The inertia of the turbine was also reduced by 20% due to the removal of mass required for the internal coolant plenums. The fluid fields in both the coolant channels and downstream of the cooled rotor were analyzed to determine the aerodynamic influence on the temperature distribution. Furthermore, the solid stress distribution inside the rotor was analyzed using Finite Element Analysis (FEA) coupled with the CFD results.

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