Papers by Keyword: Aviation Industry

Abstract: The major concern in the aviation industry is the flight safety. Although great effort has been put into the development of material and system reliability, the failure cases of fatal accidents still occur nowadays. Due to the complexity of the aviation system and the interaction among the failure components, it is difficult to do the failure analysis of the related equipment. This study focused on surveying the failure cases in aviation, which were extracted from failure analysis journals, including Engineering Failure Analysis and Case studies in Engineering Failure Analysis, in order to obtain the failure sensitive factors or failure sensitive parts. The analytical results showed that among the failure cases the fatigue failure is the largest in number of occurrence. The most failed components are the disk, blade, landing gear, bearing, and fastener. The frequently failed materials are steel, aluminum alloy, superalloy and titanium alloy. Therefore, in order to assure the safety in aviation, more attention should be paid to the fatigue failures.

Abstract: The author reviews the profile of CBT and the application of virtual reality in the development of CBT, analyzing the application of virtual reality technology to the development of CBT from three aspects: the development of CBT, comparisons among different development tools of CBT and the comparison of application among different apartment of aviation industry, laying the foundation of developing CBT of aircraft type of our own theoretically.

Abstract: CNC equipment as carriers of the advanced manufacturing technologies, to accelerate the rapid development of China's aviation industry has a pivotal role. In this article, the development of intelligent Aero-CNC machine tools is studied, the reliability improvement of domestic CNC machine tool is illustrated, the specific applications of domestic CNC machine tools is analyzed in the field of aviation, the development direction of China Aero-CNC machine tool is pointed out, it has a strategic significance for the revitalization of China's aviation industry.

Abstract: Application of turn-milling technology in aviation is investigated in this paper. First, consideration is given to the characteristics and machining tools of turn-milling technology. Second, the paper describes, in detail, the application of turn-milling technology in the aviation industry: Include crankshaft, integrated impeller and aviation system part. And then, the actual machining experiment of aircraft landing gear part is conducted by applying turn-milling technology. The experiment shows that surface roughness of the landing gear part is improved from Ra>1um to 0.3 um Ra and the machining efficiency is enhanced by 200% compared with conventional processing method. Finally, in accordance with the machining experiments, the prominent application advantages of the turn-milling in aviation are expounded. Besides, the application prospect of the turn-milling in the aviation industry is forecasted and six proposals are put forward.

Abstract: This work deals with the Liquid Resin Infusion (LRI) process developed within the research program “FUSelage COMPosite” of DAHER SOCATA. This manufacturing process enables the realization of complex composite structures or fuselage elements in a single phase (mono-material), which considerably reduce connections and relative difficulties. The concern here is the investigation of non destructive testing (NDT) methods that can be applied to LRI-structures in order to define their capacities for defect detection, and especially their associated critical defect size. In aviation industry, the AITM standards require the ultrasonic testing as NDT for composite materials. Therefore the aim of this work is to characterize and compare three different and complementary ultrasonic techniques on composite specimens. Such analysis allows to define the NDT application field of each method in term of defect detection.