Aircraft Material

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The Experts below are selected from a list of 87 Experts worldwide ranked by ideXlab platform

Shishir Kumar Sahu - One of the best experts on this subject based on the ideXlab platform.

Hongxia Cai - One of the best experts on this subject based on the ideXlab platform.

  • Quality-Oriented Classification of Aircraft Material Based on SVM
    Mathematical Problems in Engineering, 2014
    Co-Authors: Hongxia Cai, Chenglong Xia
    Abstract:

    The existing Material classification is proposed to improve the inventory management. However, different Materials have the different quality-related attributes, especially in the Aircraft industry. In order to reduce the cost without sacrificing the quality, we propose a quality-oriented Material classification system considering the Material quality character, Quality cost, and Quality influence. Analytic Hierarchy Process helps to make feature selection and classification decision. We use the improved Kraljic Portfolio Matrix to establish the three-dimensional classification model. The Aircraft Materials can be divided into eight types, including general type, key type, risk type, and leveraged type. Aiming to improve the classification accuracy of various Materials, the algorithm of Support Vector Machine is introduced. Finally, we compare the SVM and BP neural network in the application. The results prove that the SVM algorithm is more efficient and accurate and the quality-oriented Material classification is valuable.

  • Material Classification Based on SVM for Civil Aircraft
    Advanced Materials Research, 2012
    Co-Authors: Hongxia Cai
    Abstract:

    Inventory control plays a crucial role for civil Aircraft in reducing production cost to improve the competitiveness. Aiming at the special requirements of Aircraft manufacturing industry, we propose a solution to classify the Material instead of ABC inventory control. In order to balance economy and reliability, we build a new criterion system to classify the Aircraft Material into nine categories. We investigate the Support Vector Machine (SVM) method to classify the Material for it has been proved very powerful and effective in establishing classification model with small sample, nonlinearity, high dimension and local minima. The choice of corresponding parameters, the choice of the training set, and the choice of the SVM kernel highly affect the performance of the classification. The study was done to determine the appropriate kernel function and to optimize SVM’s parameters for the classification of civil Aircraft Materials. Research results prove the validity of the classification model by the software implementation.

Elluri Venkata Prasad - One of the best experts on this subject based on the ideXlab platform.

Wei Liang - One of the best experts on this subject based on the ideXlab platform.

  • General Aircraft Material Demand Forecast Based on PSO-BP Neural Network
    International Journal of Control and Automation, 2016
    Co-Authors: Xia Chen, Tuo Wang, Wei Liang
    Abstract:

    Accurately determine the air Material demand has been an important research topic in the general aviation enterprise, the selection of forecasting methods is very important to scientifically determine air Material demand. Consider general Aircraft Material demand forecast problem, forecast method is proposed using particle swarm optimization (PSO) algorithm to optimize the BP neural network. Firstly analyzed the main influence factors of general Aircraft Material demand, and then introduces the basic principle and algorithm process of PSO algorithm and BP neural network and PSO-BP neural network forecast model is constructed, finally simulation experiments are carried out by using historical statistics of general aviation enterprise, the prediction accuracy is higher than BP neural network and good results have been achieved. The method also can be used to forecast other kinds of Material resources.

A. C. Zimmerman - One of the best experts on this subject based on the ideXlab platform.

  • Pyroxylin finishes for Aircraft (Material section report)
    2017
    Co-Authors: A. C. Zimmerman
    Abstract:

    The use of finishes which will require less time for proper application and still produce durability and protection under Aircraft service conditions is highly desirable. Pyroxylin finishes have this advantage and therefore warranted an investigation into their practicability for use as protective coatings for airplanes. The purpose of this document is an investigation of several commercial pyroxylin coatings to determine their suitability for use on wood and metal Aircraft parts. The pyroxylin finishes which show a satisfactory film after atmospheric exposure test on metal for a period of one year can be recommended for use on metal parts of Aircraft provided the metal surfaces are sandblasted. NOTE: This document has been damaged and is missing the top portion of every page.

  • Enamels for Aircraft (Material section report)
    2017
    Co-Authors: A. C. Zimmerman
    Abstract:

    Protective coatings which are used to inhibit corrosion of metal parts and to retard the penetration of moisture into wood parts and thus prevent fungus growth may be classified as follows: (a) Organic coatings; (b) Metallic coatings; (c) Application of chemicals which break down the outer layer or surface of the part and form new compounds which are more corrosion resistant than the original metal. This report deals with the Materials which come under the first classification, namely enamels, which are generally manufactured from a varnish base by adding pigments. ... The Air service has [published] an approved list ... of manufacturers who have furnished samples ... which have met a satisfactory outdoor exposure test [and] a specification has been prepared which is used in conjunction with the approved lists [outlining appropriate] laboratory tests ... The acceptance of any shipment can be based on these laboratory tests, but in order to determine the actual serviceability of enamel an exposure test must be made on each sample ... [The purpose of this document is ] to revise the present approved lists of enamels and to determine the appropriateness of Air Service Specification 14028-B for Aircraft enamels and make such changes, if any, as the results would warrant.