Design Improvement Of The Heating Oven For Honeycomb Core Forming Process

Ajid, Abdul Aziz (2019) Design Improvement Of The Heating Oven For Honeycomb Core Forming Process. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Honeycomb core composite (HCC) has growing increase and widely used in aircraft component, military use, transportation and other wide range of application. However, the production yield of honeycomb core panel is significantly low due to forming process capability. Engineers need to compromise with the thickness and the process of the honeycomb core in order to reduce the failure. In addition, heating oven as well is one of the critical elements in forming process of honeycomb core composite. XYZ Company has been struggling to improve their production and reduce their scrap caused by the heating oven failure. This project aims to improve the heating oven design for honeycomb core forming process by conducting the heat flow analysis of the current oven design and experimental basis on improving the process parameters for the forming process. An experimental and simulation involved to obtain the optimum temperature and the behaviour of the oven and the HCC itself. Experimental results shown that the optimum temperature for the pre-forming heat treatment recorded was 370°C. The simulations that have been done to the old and new design shows great improvement in terms of the temperature uniformity and the heat flow of the oven. Besides that, the optimum temperature for this oven also has been determined from the experiments conducted. The specimen after the pre-forming heat treatment improved significantly in strain value from an average maximum of 0.0859 to 0.1299 at highest. The heat uniformity of the current oven design shown in the simulation has range of 200°C to 370°C from the average temperature across the oven. In conclusion, the improvement of the oven and the optimum temperature serve as guideline to engineers in the process of HCC and this can reduce defects that are highlighted thus increase the productivity of the company

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