Design of copper filled fibreglass moulds for manufacturing a customized product using linear programming optimization and finite element analysis

Seibi, Abdennour; Sawaqed, Naseem M.

doi:10.1016/s1359-835x(02)00186-0

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…Finally, the decisions that must be made are subject to certain requirements and restrictions of a system which are called constraints (Smith, Taşkın 2008). LP has been widely used in optimizing complex systems, such as those arising in marketing (Stapleton et al 2003), finance (Benati, Rizzi 2007), energy (Xydis, Koroneos 2012), product design (Seibi, Sawaqed 2002), transportation (Luathep et al 2011), production planning and control (Rasmussen 2013;Doganis, Sarimveis 2007), chemistry (Rossi et al 2009), medicine (Mangasarian et al 1994), telecommunications (Sirdey, Maurice 2008), sports (Soleimani-Damaneh et al 2011), and military (Tucker et al 1998). Some attempts have been made to develop linear programming models for optimization problems in construction industry.…”

Section: Literature Reviewmentioning

confidence: 99%

Maximizing the Value of Residential Projects Using Fuzzy Rule Based Linear Programming

Üstündağ

Çevikcan

2016

Journal of Civil Engineering and Management

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Abstract. Optimizing the allocation of residence types has a great impact on efficient management of resources for construction projects. Hence, determining appropriate allocation of residence types provides effective financial activities, especially for large-scaled residential projects. Subjectivity and vagueness in the determination of price per m 2 for residences requires the consideration of fuzzy logic, since the modeling of imprecise and qualitative knowledge, as well as the transmission and handling of uncertainty at various stages are possible through the use of fuzzy sets. This study proposes an approach that integrates Fuzzy Rule Based System (FRBS) with mathematical programming. In the proposed hybrid approach, FRBS is used to set price per square meter and it provides input for Net Present Value (NPV) formulation. Mixed integer linear programming (MILP) model is developed for the maximization of (NPV) of the project. The proposed model is applied to a residential project in Istanbul to demonstrate its performance. The optimal NPVs and allocation results for four types of residences are analyzed depending on the different factor levels of total construction area, sales rate and bank loan interest rate. The results indicate that the optimal NPV and allocation of residences are significantly influenced by the factor of construction area.

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Section: Literature Reviewmentioning

confidence: 99%

Maximizing the Value of Residential Projects Using Fuzzy Rule Based Linear Programming

Üstündağ

Çevikcan

2016

Journal of Civil Engineering and Management

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Study on the validation of ring filament winding methods for unidirectional preform ply manufacturing

Finkenwerder

Geistbeck

Middendorf

2016

Advanced Manufacturing: Polymer & Composites Science

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Ring filament winding enables processing of continuous fibers for manufacturing unidirectional non-crimp unidirectional preform plies on straight-, curved-, or closed-mandrel geometries. However, unidirectional processing of tows can lead to increased lateral tow slippage. The objective of the present study is thus to validate unidirectional winding methods for ring filament winding, performing geodesic and non-geodesic trajectories analytically and experimentally. Implementation of geodesic paths investigates the influence of the tensile force and take-up velocity on the winding angle reproducibility. Non-geodesic winding paths are conducted here dependent on winding methods, slippage coefficients, and the mandrel's surface materials, evidencing the occurrence of lateral tow slippage by measurements of nip-point forces. Findings indicate an excellent reproducibility of geodesic paths independent of the process velocity. Non-geodesic paths were partially validated because of the occurrence of lateral tape-slippage and a tape side-inclination effect, correlating an increased stick behavior to higher local normal pressure.

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Parametric Optmisation of Pin-assisted-melt Impregnation of Glass Fiber/Polypropylene by Taguchi Method

Xian

et al. 2006

Journal of Composite Materials

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A continuous glass fiber (GF) roving reinforced polypropylene (PP) tape is prepared with a pin-assisted-melt impregnation set-up. This study originally applied the Taguchi method to statistically assess the effect of selected impregnation parameters on the impregnation process, and to optimize the parameters to realize a high quality impregnated tape. The quality of the impregnated tape is characterized by the degree of impregnation, ratio of the impregnated fiber number to the total fiber number. According to the Taguchi method, impregnation experiments are designed and the experimental results are analyzed. An optimal parameter combination is determined, which led to a degree of impregnation more than 94%. Analysis of variance (ANOVA) was performed on the measured data and S/N (signal to noise) ratios. The results indicated that pulling speed, melt temperature, and the number of impregnation pins are the significant factors in a declining sequence affecting the impregnation process.

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Design of copper filled fibreglass moulds for manufacturing a customized product using linear programming optimization and finite element analysis

Cited by 3 publications

References 5 publications

Maximizing the Value of Residential Projects Using Fuzzy Rule Based Linear Programming

Maximizing the Value of Residential Projects Using Fuzzy Rule Based Linear Programming

Study on the validation of ring filament winding methods for unidirectional preform ply manufacturing

Parametric Optmisation of Pin-assisted-melt Impregnation of Glass Fiber/Polypropylene by Taguchi Method

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