Functional Failure in Filament-Wound Composite Pipe: A Parametric Sensitivity Analysis Approach

2016 ◽  
Author(s):  
Abul Fazal M. Arif ◽  
Ahmed S. AlOmari ◽  
Sulaman S. Pashah
Keyword(s):  
Sensitivity Analysis ◽  
Material Design ◽  
Analysis Approach ◽  
Design Parameters ◽  
Frp Composite ◽  
Filament Wound ◽  
Filament Wound Composite ◽  
Fiber Matrix ◽  
Mandrel Diameter ◽  
Winding Tension

The performance of filament-wound FRP composite is dependent on the properties of constituent materials (i.e. fiber, matrix and fiber-matrix interface) as well as on the manufacturing and design parameters (e.g. fiber lay-up, laminate stacking sequence, mandrel diameter, winding tension, winding time, fiber wet-out, etc.). In the first part of this work, we present a sensitivity analysis approach to ascertain the degree of influence of various mechanical and material design parameters on the structural failure of the composite laminated pipes. In the second part, sensitivity analysis results were used to design pipes with improved mechanical strength.

scholarly journals A Sensitivity Analysis Approach to Identify Key Environmental Performance Factors

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Xi Yu ◽  
Aicha Sekhari ◽  
Antoine Nongaillard ◽  
Abdelaziz Bouras ◽  
Suiran Yu
Keyword(s):  
Sensitivity Analysis ◽  
Life Cycle ◽  
Environmental Impacts ◽  
Environmental Performance ◽  
Product Life Cycle ◽  
Carbon Dioxide Emission ◽  
Circuit Board ◽  
Analysis Approach ◽  
Design Parameters ◽  
Performance Factors

Life cycle assessment (LCA) is widely used in design phase to reduce the product’s environmental impacts through the whole product life cycle (PLC) during the last two decades. The traditional LCA is restricted to assessing the environmental impacts of a product and the results cannot reflect the effects of changes within the life cycle. In order to improve the quality of ecodesign, it is a growing need to develop an approach which can reflect the changes between the design parameters and product’s environmental impacts. A sensitivity analysis approach based on LCA and ecodesign is proposed in this paper. The key environmental performance factors which have significant influence on the products’ environmental impacts can be identified by analyzing the relationship between environmental impacts and the design parameters. Users without much environmental knowledge can use this approach to determine which design parameter should be first considered when (re)designing a product. A printed circuit board (PCB) case study is conducted; eight design parameters are chosen to be analyzed by our approach. The result shows that the carbon dioxide emission during the PCB manufacture is highly sensitive to the area of PCB panel.

Impact Resistance of Filament Wound Composite Pipes: A Parametric Study

2014 ◽  
Author(s):  
Abul Fazal M. Arif ◽  
M. Haris Malik ◽  
A. S. Al-Omari
Keyword(s):  
Parametric Study ◽  
Low Velocity Impact ◽  
Design Parameters ◽  
Low Velocity ◽  
Velocity Impact ◽  
Filament Wound ◽  
Filament Wound Composite ◽  
Composite Pipes ◽  
The Impact ◽  
Wound Composite

Filament wound composite pipes are being used in more and more applications. However, the impact behavior of these pipes is of particular importance in many applications. The sudden failure of these pipes under low velocity impact loads can be dangerous especially when the medium inside the pipe is hazardous or toxic in nature. The impact response of a composite laminate depends upon various factors such as thickness, stacking sequence and number of layers. The primary focus of this paper is parametric study of low velocity impact damage of CFRP and GFRP pipes under varying design parameters using finite element analysis. The simulation results are then used along with the ANN (Artificial Neural Networks) to fit a function to estimate the amount of absorbed energy.

Effect of Winding Tension on Elastic Modulus of Filament Wound Composite Cylinder under Axial Loading

2013 ◽  
Vol 700 ◽  
pp. 157-159 ◽  
Author(s):  
Wei Dong Wen ◽  
Jian Li ◽  
Hai Tao Cui ◽  
Ying Xu ◽  
Hong Jian Zhang
Keyword(s):  
Elastic Modulus ◽  
Axial Loading ◽  
Composite Cylinder ◽  
Axial Tension ◽  
Fiber Tension ◽  
Filament Wound ◽  
Filament Wound Composite ◽  
Winding Tension ◽  
Composite Pipes ◽  
Wound Composite

Effect of winding tension on elastic modulus of filament wound composite pipes were investigated with experiments in this paper. Three winding tension configuration were utilized and axial tension experiments were carried out. quantity of fiber tension descent from inner to outside in each configuration, which is always used in practices. The result of experiment shows that elastic modulus increase with fiber tension's raising and effect of fiber tension is not too remarkable.

scholarly journals CONCEPTUAL DESIGN FOR ASSEMBLY IN AEROSPACE INDUSTRY: SENSITIVITY ANALYSIS OF MATHEMATICAL FRAMEWORK AND DESIGN PARAMETERS

2021 ◽  
Vol 1 ◽  
pp. 731-740
Author(s):  
Giovanni Formentini ◽  
Claudio Favi ◽  
Claude Cuiller ◽  
Pierre-Eric Dereux ◽  
Francois Bouissiere ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Conceptual Design ◽  
Design Parameters ◽  
Design For Assembly ◽  
Mathematical Framework ◽  
Commercial Aircraft ◽  
System Architectures ◽  
Complex Engineering ◽  
Aircraft System ◽  
Definition Of

AbstractOne of the most challenging activity in the engineering design process is the definition of a framework (model and parameters) for the characterization of specific processes such as installation and assembly. Aircraft system architectures are complex structures used to understand relation among elements (modules) inside an aircraft and its evaluation is one of the first activity since the conceptual design. The assessment of aircraft architectures, from the assembly perspective, requires parameter identification as well as the definition of the overall analysis framework (i.e., mathematical models, equations).The paper aims at the analysis of a mathematical framework (structure, equations and parameters) developed to assess the fit for assembly performances of aircraft system architectures by the mean of sensitivity analysis (One-Factor-At-Time method). The sensitivity analysis was performed on a complex engineering framework, i.e. the Conceptual Design for Assembly (CDfA) methodology, which is characterized by level, domains and attributes (parameters). A commercial aircraft cabin system was used as a case study to understand the use of different mathematical operators as well as the way to cluster attributes.

Ultimate Elastic Wall Stress (UEWS) Test under Biaxial Loading for Glass-Fibre Reinforced Epoxy (GRE) Pipes

2014 ◽  
Vol 974 ◽  
pp. 188-194 ◽  
Author(s):  
Tarak A. Assaleh ◽  
Lutfeya A. Almagguz
Keyword(s):  
Biaxial Loading ◽  
Pipe Wall ◽  
Axial Stress ◽  
Wall Stress ◽  
Current Method ◽  
Raw Material ◽  
Attractive Alternative ◽  
Filament Wound ◽  
Elastic Wall ◽  
Filament Wound Composite

This paper presents the results of an experimental investigation into the Ultimate Elastic Wall Stress (UEWS) of ±55° filament wound composite pipes. The UEWS test appears to provide an attractive alternative to the current method, and has proved to be one of the most effective in term of accuracy and speed. Moreover, it has been found to be sensitive to changes in key manufacturing and raw material parameters. The pipes were subjected to biaxial loading, which was achieved by combinations of hoop and axial stress. Loads were applied as groups of cycles which, were gradually increased until the UEWS had been determined. Various ratios of hoop to axial stress were applied to the pipes, ranging from pure axial to pure hoop loading at room temperature and at 65°C. These ratios were investigated by applying different pressures in both the main and small chambers built inside the pipe, and therefore it was unnecessary to add any external loads to the pipe wall. Tests were also conducted to observe leakage through the pipe wall. The main failure mode observed was weepage through the pipe wall, which was due to intensive matrix microcracking. The results from the UEWS tests are presented in the form of failure envelopes showing the effects of testing at an elevated temperature. Finally, degradation in the elastic properties of the pipe wall is also discussed and plotted against wall stress.

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