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Shenyang, China

Feng Z.-M.,Shenyang Aircraft Company | Zou C.,Beihang University | Liu J.-H.,Beihang University
Jisuanji Jicheng Zhizao Xitong/Computer Integrated Manufacturing Systems, CIMS | Year: 2010

Concept of key assembly characteristics was proposed according to structure and assembly characteristics of aircraft product. Method to identify and control key assembly characteristics was systematically analyzed. Key assembly characteristics were difficult to be identified in the design phase, it needed to refer to assembly scheme. Datum flow chain was addressed to present the accumulation of variation among joints. The most error stacked joints were analyzed qualitatively and quantitatively to identify key assembly characteristics. The key assembly characteristics were controlled by flown-down to sub assembly and compensation. An example was provided to verify the effectiveness of the proposed method by identifying and controling the key assembly characteristics of an aircraft vertical tail. Source

Zhang L.,Jilin Business and Technology College | Zhang L.,Jilin University | Zhang M.,Jilin University | Zhang M.,Shenyang Aircraft Company | Wu Y.,Jilin University
Journal of Molecular Structure | Year: 2014

In the present study, we apply fluorescence spectroscopy and Fourier transform infrared (FT IR) spectroscopy to investigate the temperature-induced optical property and conformational changes of BSA-protected gold nanoclusters (AuNCs@BSA). By the plot of single-band-shift, combined with VV-2D correlation analysis including hetero-spectral correlation and moving window correlation, the dynamics changes of the ligand BSA induced by temperature have been investigated in detail and compared with that induced by the perturbation of pressure. The study may be helpful to stimulate more experimental and theoretical research on the atomic level design of luminescent metal nanoclusters for promising optoelectronic and other applications. © 2014 Elsevier Ireland Ltd. All rights reserved. Source

Yin H.,Shenyang Aircraft Company | Meng B.,Shenyang Aerospace University
CSAE 2012 - Proceedings, 2012 IEEE International Conference on Computer Science and Automation Engineering | Year: 2012

Combined the roughcast expansion technology for double curvature high rib integral panel part from a certain type of aircraft, a rapid and precise expansion method for the part is realized. The part base expansion method uses geometric simulation modeling method based on the hypothesis of the siding material deformation in thickness direction is negligible and the siding neutral layer surface area is unchanged, and determines reinforced structure and internal milling information on panel body based on mapping theorem and intersection algorithm. Finally, a machine panel as an example, the geometry simulation modeling approach is introduced step by step. © 2012 IEEE. Source

Yang X.-W.,Harbin Institute of Technology | Zhu J.-C.,Harbin Institute of Technology | Nong Z.-S.,Harbin Institute of Technology | He D.,Harbin Institute of Technology | And 3 more authors.
Transactions of Nonferrous Metals Society of China (English Edition) | Year: 2013

The workpieces of A357 alloy were routinely heat treated to the T6 state in order to gain an adequate mechanical property. The mechanical properties of these workpieces depend mainly on solid-solution temperature, solid-solution time, artificial aging temperature and artificial aging time. An artificial neural network (ANN) model with a back-propagation (BP) algorithm was used to predict mechanical properties of A357 alloy, and the effects of heat treatment processes on mechanical behavior of this alloy were studied. The results show that this BP model is able to predict the mechanical properties with a high accuracy. This model was used to reflect the influence of heat treatments on the mechanical properties of A357 alloy. Isograms of ultimate tensile strength and elongation were drawn in the same picture, which are very helpful to understand the relationship among aging parameters, ultimate tensile strength and elongation. © 2013 The Nonferrous Metals Society of China. Source

Li Z.,Shenyang Aerospace University | Yue Y.,Shenyang Aerospace University | Ji S.,Shenyang Aerospace University | Peng C.,Beihang University | Wang L.,Shenyang Aircraft Company
Materials and Design | Year: 2016

As the main factor significantly influencing the material flow behavior during friction stir spot welding (FSSW), tool geometry plays an important role on the weld quality. In this study, a tool with a half-threaded pin aiming to enhance the material flow at the lap interface but induces lower heat input was successfully put forward and manufactured. Using alclad 2A12-T4 aluminum alloy as the research object, the FSSW processes using tools with half-threaded pin and full-threaded pin were investigated by experimental and simulation methods. Compared with the full-threaded pin, peak temperature during welding using the half-threaded pin is lower than that using the full-threaded pin. The half-threaded pin was beneficial for attaining bigger bonding width at the lap interface, which resulted from the higher material flow velocity. Cross tension failure load of the welds using the half-threaded pin is bigger than that using the full-threaded pin, which agrees with the different bonding widths. Fracture morphologies directly prove bigger bonding width on the weld using the half-threaded pin. © 2016 Elsevier Ltd. Source

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