Analysis On Engineering Change Information Transfer And Impacts Of Aircraft Composite Materials

With the properity and development of the aviation industry, the advanced composite materialsare applied widely in the aircraft manufacturing industry for its outstanding performance, and therequirement is increasing as well. Because of the complexity structure and long manufacturinglifecycle of the aircraft, Engineering Change (EC) is unavoidable during productive process. Theeffective management of EC is very important. Ensuring the consistency and integrality of changeinformation, information transfer and impact of change must be considered to achieve quick reactionand decrease the negative effect of the change in manufacturing process.Based on an in-depth literature review and survey in the manufacturing process of aircraftcomposite material component, the change acquisition algorithm of EBOM/PBOM and changeinformation transmission algorithm among multiple view of BOM are established to achieve rapidextraction and precise transition of change information. To acquire the influence situation of ECtowards plan, the change parts plan is calculated based on the MBOM change imformation andcapacity constrains, then the related parts plans are deduced based on product BOM structure.Therefore, the change imformation of plan is acquired, which provides the plan change information ofchange parts for the planning and scheduling of the workshop. The composition of change cost isanalysised and the concept of plan fluctuation is put forward as well. Aiming at reduce the changecost, ensure the smooth process of manufacturing, and to ensure the product due time, the schedulingalgorithm combined the heuristic algorithm and the fuzzy algorithm is established based on theexecuted plan of the workshop.Finally, the Engineering Change management system based on MES is accomplished includingdetail design based on the structure of B/S on the basis of the manufacturing execution system ofcomposite materials, and the test of the system is implemented by real data from production ofcomposite materials. The efficiency of EC execution is improved through the application of thesystem.