Investigation based on design of experiment for woven composite deformation

Tengku Mohamad, Tengku Ahmad Dzilkarnain (2014) Investigation based on design of experiment for woven composite deformation. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This final year project entitled “Investigation based on Design of Experiment for Woven Fabric Composites Deformation”. The project is to define the material composites deformation after curing effect from aerospace component by getting the spring back angle of the composites. The material is made of same material on component cover engine of the airplane. The cover engine is function to cover up the turbine engine of the airplane with precise shape. This problem is carried out based on the highlighted problems of aircraft component at the aircraft manufacture company. The problems occurred on the component after the curing process in the autoclave where the components change the shape which is called spring back effect. This problem maybe occurs due to the unsuitable tooling usage. To solve the problems, the aluminum and carbon tooling was chosen to analyze the spring back effect. An experiment was conducted to study the effect of composites deformation on the finish product after curing process. Spring back effect will be measure for process effect evaluation. Base on the study, the significant finding of expected result is the size of the material, orientation, number of plies and different tooling will affect the spring back value. Where the orientation (0, 90°) of the part those produce less spring back angle to the composites. Thicker the part will provide angle of spring back lower due to the increasing of the number of plies use. The 16 plies part produce bigger spring back angle. The size of the part affected the spring back deformation of the part. The increasing in size will increase more contact area between part and tooling produced more spring back angle. The 300x300mm size part shows bigger spring back angle to the part. For the type of tooling use as mold for the composites deformation, the value of CTE are important, where the higher the values of CTE produces more spring back angle, Aluminum tooling produce highest value of spring back.

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