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Wang Y.,Jilin Institute of Chemical Technology | Yang M.,Jilin Petrochemical Company
Zhongguo Jixie Gongcheng/China Mechanical Engineering | Year: 2014

The reliability qualification experimental design about failure rate for exponential products was made based on Bayesian decision theory. Considering the relation between the actual economic loss and the failure rate, the decision loss function was constructed so as to quantify loss. According to the posterior risk criteria, the loss caused by producer's risk and consumer's risk were constrained. The maximum sample size and the failure number were determined in order to get the maximum expected net gain from sampling in type II censoring way. The qualified determination time according with the product identification was deduced by posterior loss criteria. In all, the consumer can obtain the more rational and effective qualification scheme than only considering the decision risk. At last, an example was given to illustrate the validity and practicability. ©, 2014, China Mechanical Engineering Magazine Office. All right reserved. Source

Liu Z.,CAS Changchun Institute of Applied Chemistry | Deng Y.,Changchun University of Technology | Han Y.,Changchun University of Technology | Chen M.,Jilin Petrochemical Company | And 5 more authors.
Industrial and Engineering Chemistry Research | Year: 2012

Maleic anhydride (MAH) functionalized acrylate-styrene-acrylonitrile (ASA) copolymers (F-ASA) were prepared via an emulsion polymerization process. The F-ASA particles were used to toughen Polyamide-6 (PA-6). Molau tests showed the compatibilization reactions between PA-6 and F-ASA. The notched impact strength of PA-6 was effectively improved by the use of F-ASA. At a rubber content of 20% by weight in PA-6/F-ASA blends, it was found that the impact strength increased with the MAH content. When the MAH content was 8% in F-ASA, the impact strength was 1008 J/m. The influence of rubber content on the properties of PA-6/F-ASA8 blends was investigated. The results showed that brittle-ductile transition took place when the rubber content was 20%. Moreover, increasing the MAH content of the blends reduced the brittle-ductile temperature of the F-ASA/PA-6 blends from 50 °C to about 0 °C. Scanning electron microscopy (SEM) results showed that cavitation of rubber particles and shear yielding of the PA-6 matrix were the major toughening mechanisms. © 2012 American Chemical Society. Source

Chi D.,Northeast Dianli University | Weibo W.,Zhejiang GongShang University | Lishu W.,Neusoft Institute of Information | Zhaozheng L.,Jilin Petrochemical Company
Lecture Notes in Electrical Engineering | Year: 2012

Repairing the panel CAD geometric model is an important pre-processing step of the finite element analysis, and widely used in the computer-aided geometric design field. This paper focused on the surface healing method of panel CAD model, which was proposed and analyzed by NURBS technology. Through the pipeline method determines the matching-curves border fast firstly, make the curves discrete points sets and on the basis of the characteristics of the matching-curves method, the surfaces were stitched. On the basis of the algorithm, a surface stitching program module was developed. The validity of algorithm was verified by healing automobile front fender parts. © 2012 Springer-Verlag. Source

Gao X.,Beihua University | Li J.,Beihua University | Quan J.,Jilin Petrochemical Company | Zhao K.,Shanghai Xinyu Zhencheng Electronic Technology Co. | Qin Z.,Beihua University
Journal of Applied Optics | Year: 2016

In order to meet the demands of the calibration for ground equipment, a new type of high-precision star magnitude simulator with limited space and full spectrum was presented. The optical system structure of the star magnitude simulator was designed to be the compact structure space. The control system based on the pulse width modulation (PWM) technology can realize the digital adjustment of the LED light intensity from 640 lx to 1.0 lx. The system which was drived by PT4115 used the white light XLamp LED as the light source. Compared with the traditional analog adjustment star magnitude simulator, the new star magnitude simulator has the characteristics of small volume, low heat and high stability, etc. Through the application in dark room environment, the analysis and test results show that the 0m~7m magnitude stars can be simulated, the spectral range can cover the whole visible light, and the control precision of the star magnitude is up to ±0.1m. © 2016, Editorial Board, Journal of Applied Optics. All right reserved. Source

Hu H.,Anhui University of Science and Technology | Liu Z.,Jilin Petrochemical Company | Liu W.,Peking University
Applied Mechanics and Materials | Year: 2012

The high strain rate compressive behavior of a bicomponent high performance epoxy resin for advanced composites filled with Polyaryletherketone (PAEK) has been studied on a modified Split Hopkinson Pressure Bar (SHPB) setup under dynamic loading conditions. Dynamic stress-strain plot was obtained for each sample. The results of the study indicated that the plastic of the epoxy composites increased while yield strength decreases slightly with the increase of the content of PAEK powder. In contrast, EP/PAEK-10 composite has the best Compressive properties. © (2012) Trans Tech Publications, Switzerland. Source

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