Cost optimization of composite aircraft structures including variable laminate qualities

被引:41
作者
Kaufmann, Markus [1 ]
Zenkert, Dan [1 ]
Mattei, Christophe [2 ]
机构
[1] KTH, S-10044 Stockholm, Sweden
[2] Linkoping Univ, Div Engn Mat, Dept Management & Engn, S-58183 Linkoping, Sweden
关键词
Structural composites; Non-destructive testing; Strength; Finite element analysis (FEA); Optimization;
D O I
10.1016/j.compscitech.2008.05.024
中图分类号
TB33 [复合材料];
学科分类号
摘要
Composite structures can lower the weight of an airliner significantly. The increased production cost, however, requires the application of cost-effective design strategies in which cost, weight and the desired laminate quality are taken into account. This paper proposes an optimization framework for composite aircraft structures that minimizes the direct operating cost on a part level. In addition to previous models, a non-destructive testing model is implemented that calculates design allowables of a laminate based on the ultrasonic scan parameters. In a case study, the effect of the laminate quality on the direct operating cost is discussed. It is investigated how the flaw size and therefore the scan pitch of a composite laminate can influence the optimal solution in terms of cost and weight; thus, the manufacturing cost, the non-destructive testing cost and the weight of a component can be balanced by optimizing the laminate quality in an early design phase. (c) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2748 / 2754
页数:7
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