By Dai Gil Lee
The aim of this e-book is to offer an built-in method of the layout and production of goods from complicated composites. It exhibits how the elemental habit of composites and their constitutive relationships can be utilized throughout the layout level, which minimizes the complexity of producing composite components and decreases the repetitive "design-build-test" cycle. Designing it correct the 1st time goes to figure out the competitiveness of an organization, the reliability of the half, the robustness of fabrication strategies, and eventually, the fee and improvement time of composite components. such a lot of all, it may extend using complex composite elements in fields that use composites basically to a restricted quantity at present. to accomplish those ambitions, this publication provides the layout and fabrication of novel composite components made for desktop instruments and different purposes like robots and cars. This e-book is acceptable as a textbook for graduate classes within the layout and fabrication of composites. it's going to even be of curiosity to practising engineers studying approximately composites and axiomatic layout.
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Extra info for Axiomatic Design and Fabrication of Composite Structures - Applications in Robots, Machine Tools, and Automobiles
The cure temperature and pressure are maintained for 2 hours or more until a predetermined degree of cure has been achieved. The temperature is then gradually decreased while the part is still under pressure. At the end of the cure cycle, the part is removed from the vacuum bag and, if necessary, postcured at an elevated temperature in an oven. 35 Typical two-stage cure cycle for a epoxy matrix composite material. 36 Schematic drawing of filament winding operation. 8. 36 shows a schematic drawing of a ﬁlament winding process.
5 Advantages and Disadvantages of Composite Materials Fiber-reinforced composite materials oﬀer a combination of strength and modulus that is either comparable to or better than many traditional metallic materials. 31). Composite materials can be tailored to meet the speciﬁc demands of each particular application. Available design parameters are the choice of materials (ﬁber, matrix), the volume fraction of ﬁber and matrix, fabrication method, number of layers in a given direction, thickness of individual layers, type of layer (unidirectional or fabric), and the layer stacking sequence.
For example, a typical steel car hood requires as much as 27 kg of crude oil equivalent, taking into account the signiﬁcant stamping waste that has to be recycled. The same hood in polymer composite requires 16 kg of crude oil equivalent because of its lower mass, negligible trimming waste, energy-conserving forming process, and large proportion of mineral ﬁllers and glass-ﬁber reinforcement, which have a low crude oil equivalent. Thus, the switch from steel to polymeric materials leads to energy saving during the fabrication, as well as the operation period, of vehicles.
Axiomatic Design and Fabrication of Composite Structures - Applications in Robots, Machine Tools, and Automobiles by Dai Gil Lee