Material Selection for a Curved C-Spar Based on Cost Optimization

Kaufmann, Markus; Zenkert, Dan; Åkermo, Malin

doi:10.2514/1.c000188

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…Quantitative estimations are based on individual manufacturing routes, for example Activity-Based Costing (ABC) assumes that cost is caused by individual production activities and that components consume activities (12) . There is a significant volume of literature on qualitative cost estimation of composite component manufacture (13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24) . Recent relevant work includes Kaufmann et al (16) , who created an integrated cost/weight optimisation framework to examine a generic aircraft stiffened panel sub-component (≈ 0•36m 2 ).…”

Section: Costing Methodsmentioning

confidence: 99%

Modelling lay-up automation and production rate interaction on the cost of large stiffened panel components

Mullan¹,

Murphy²,

Quinn³

et al. 2014

Aeronaut. j. (1968)

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This paper presents an integrated design and costing method for large stiffened panels for the purpose of investigating the influence and interaction of lay-up technology and production rate on manufacturing cost. A series of wing cover panels (≈586kg, 19·9m 2 ) have been sized with realistic requirements considering manual and automated lay-up routes. The integrated method has enabled the quantification of component unit cost sensitivity to changes in annual production rate and employed equipment maximum deposition rate. Moreover the results demonstrate the interconnected relationship between lay-up process and panel design, and unit cost. The optimum unit cost solution when using automated lay-up is a combination of the minimum deposition rate and minimum number of lay-up machines to meet the required production rate. However, the location of the optimum unit cost, at the boundaries between the number of lay-up machines required, can make unit cost very sensitive to small changes in component design, production rate, and equipment maximum deposition rate.

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Section: Costing Methodsmentioning

confidence: 99%

Modelling lay-up automation and production rate interaction on the cost of large stiffened panel components

Mullan¹,

Murphy²,

Quinn³

et al. 2014

Aeronaut. j. (1968)

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show abstract

“…The use of composite materials therefore ultimately presents a trade-off between potential weight save and higher production cost. Research has been devoted to this trade-off through multi-dimensional optimization [1], knowledge-based engineering [2] as well as the development of performance indices [3]. However, more focus on the estimation of production costs during the development phase of a composite structure is needed to further study the relationship between weight reduction and production cost.…”

Section: Introductionmentioning

confidence: 99%

A composite cost model for the aeronautical industry: Methodology and case study

Hagnell

Åkermo

2015

Composites Part B: Engineering

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“…The goal of most of the developed models of the vacuum infusion process is to understand the evolving dynamics of the formation of a resin flow pattern in a porous preform. Only a small part of the developed models was used in algorithms for inverse problems of optimization of quality [38][39][40][41] and (or) process productivity [42,43], and also to accept the tradeoff between quality and cost [44,45]. Two classes of parameters are most often used as the design variables: parameters of the process layout (number and location of injection gates and vacuum vents, their throughput) and process modes (temperatures of injected resin and preform heating, pressure in the vacuum line and in the resin injection gate).…”

Section: Introductionmentioning

confidence: 99%

Multi-Criteria Decision Approach to Design a Vacuum Infusion Process Layout Providing the Polymeric Composite Part Quality

Shevtsov

Zhilyaev

Chang³

et al. 2022

Polymers

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The increasingly widespread use of vacuum assisted technologies in the manufacture of polymer-composite structures does not always provide the required product quality and repeatability. Deterioration of quality most often appears itself in the form of incomplete filling of the preform with resin as a result of the inner and outer dry spot formation, as well as due to premature gelation of the resin and blockage of the vacuum port. As experience shows, these undesirable phenomena are significantly dependent on the location of the resin and vacuum ports. This article presents a method for making a decision on the rational design of a process layout. It is based on early forecasting of its objectives in terms of quality and reliability when simulating its finite element model, on the correlation analysis of the preliminary and final quality assessments, as well as on the study of the cross-correlation of a group of early calculated sub-criteria. The effectiveness of the proposed method is demonstrated by the example of vacuum infusion of a 3D thin-walled structure of complex geometry.

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Material Selection for a Curved C-Spar Based on Cost Optimization

Cited by 8 publications

References 21 publications

Modelling lay-up automation and production rate interaction on the cost of large stiffened panel components

Modelling lay-up automation and production rate interaction on the cost of large stiffened panel components

A composite cost model for the aeronautical industry: Methodology and case study

Multi-Criteria Decision Approach to Design a Vacuum Infusion Process Layout Providing the Polymeric Composite Part Quality

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