Lin Li, Li Jicheng, Wu Di, Li Ximeng

The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.2, pp. 39-40, 2011, DOI:10.3970/icces.2011.017.039

Abstract Two kinds of plasma sprayed Cr2O3 coatings are tested with electro-mechanical impedance (EMI) method. The influence of frequency band on the testing sensitivity of EMI method is investigated in kHz and MHz frequency ranges. The frequency shifts and root mean square deviation (RMSD) of the PZT electric impedance signatures are used as evaluation indicator. The variation of EMI sensitivity is investigated on 8 frequency bands with high mode density in the frequency ranges of 0.1-600 kHz and 1-10 MHz. The results show that in the low frequency range, the frequency shifts increase and the RMSD values first increase and then… More >

Dr John Dear (Lead Author)

The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.2, pp. 37-38, 2011, DOI:10.3970/icces.2011.017.037

Abstract This key-note lecture is a contribution to: ICCES’11 SPECIAL SYMPOSIUM ON MODERN EXPERIMENTAL METHODS IN MECHANICS, ENGINEERING, AND THE SCIENCES (Organizing Committee Co-Chairs: Fu-Pen Chiang (USA), YiIan Kang (China), Huimin Xie (China), Xiaoyuan He (China))
Presented, in this keynote lecture, are experimental data relating to composite sand wich materials subjected to different rates of loading including explosive blast. The composite sandwich materials are manufactured using a variety of different skin and core materials. Experimental results are described for quasi-static, high-rate and explosive blast loading using DIC to identify failures processes.
An important benefit of composite sandwich materials is… More >

Ke JI, nlong Chen, Lina Zhang, Xinhua Ji

The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.2, pp. 35-36, 2011, DOI:10.3970/icces.2011.017.035

Abstract The Stress distribution of contact area in engineering structure is complex. Automatic whole-field measurement of photo-elasticity is a feasibility method to solve the contact problem. However, the problem of isoclinic and isochromatic interaction is important in phase-shifting techniques in photo-elasticity. The technique named 8-step phase shifting technique is applied to solve the problem of isoclinic fringe pattern influenced by isochromatic fringe patterns in integer order and half-integer order. Isoclinic parameter in the range of [0,I/2] is given by the method.

Based on the eight-step phase shifting technique, some methods to determine the first principal stress direction of the model… More >

Sheng D. Chao

The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.2, pp. 33-34, 2011, DOI:10.3970/icces.2011.017.033

Abstract We performed an immunoassay analysis using the Quartz Crystal Microbalance (QCM) biosensor to detect the specific binding reaction of the (Human IgG1)-(Anti-Human IgG1) protein pair. Both experimental and computational were used to study biomolecular binding reactions in microfluidic channels. We discussed the unsteady convective diffusion in the transportation tube and found that the distribution of the analyte concentration in the tube is strongly affected by the flow field. Due to this, large discrepancies between the simulations and experimental results were observed. We show that the conventional assumption of the uniform and steady analyte concentration used in the computational procedure is… More >

Xiaohua Tan, Yilan kang^*, Ganyun Huang

The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.1, pp. 31-32, 2011, DOI:10.3970/icces.2011.017.031

Abstract Soft materials are a special class of materials between the ideal fluid and solid (Gennes, 1992), comprising a variety of physical states that are easily deformed by mechanical loading or thermal fluctuations. They are increasingly important in a wide range of technological applications, and the related contact problem is rather complex due to geometrical and material nonlinearities and complicated boundary conditions. Measuring, characterizing, and modeling the contact behavior of soft materials is still a challenging topic for engineering researchers. In this work, through combination of digital moirAC method and inner-grating approach an experimental technique has been developed for measuring and… More >

LIN Xiao-Ping, LEI Zhen-Kun, LIU Zeng-Hua, WU Zhan-Jun

The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.1, pp. 29-30, 2011, DOI:10.3970/icces.2011.017.029

Abstract Recently, a technology named ultrasonic guided wave has a rapid development and wide application. It is more and more popular for the advantage compared with traditional detection. An enormous amount of work has contributed to our current understanding of wave propagation. The case of a hollow cylinder loaded by the outside liquid has been considered by Rose et al. Kwun investigated the propagation of guided waves in water filled pipes. C. Aristegui discussed propagation of guided waves in fluid-filled pipe surrounded by different fluids. Lafleur and Shields have studied the propagation of low frequency modes in a liquid-filled tube.

… More >

Yang-chun DENG, Gang CHEN

The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.1, pp. 27-28, 2011, DOI:10.3970/icces.2011.017.027

Abstract To use material effective and keep pressure vessel safety, large deformation analysis for pressure vessel is very important. Until 2007, the elastic-plastic stress analysis method, that is the first time all over the world, is provided in ASME a.?-2 edition 2007 for boiler and pressure vessel standard that Finite Element Method is used with large deformation analysis. But there is no common recognized direct solution for the carrying capacity of pressure vessels yet and this restrict the application of large deformation analysis in pressure vessel design. This paper investigates the carrying capacity of pressure vessels under hydrostatic pressure, based on… More >

Xianfu Huang, Zhanwei Liu, Jianxin Gao, Huimin Xie

The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.1, pp. 25-26, 2011, DOI:10.3970/icces.2011.017.025

Abstract The spatial laser interferometry with combination of fast Fourier transformation (FFT) technique has been applied to analyze and reshape 3D profile of micro objects in this paper. In this technique, two beam of coherent spatial laser would superpose and interfere with each other to produce fringes with constant pitches. Deformed fringe lines would be generated on a tested object surface for its 3D height existence when a micro-movable platform with the tested object on it is placed in the spatial interferential fringe field. On the analysis of the fringe pattern collected by CCD which carries not only the 3D height… More >

Chien-Hao Tseng, Chia-Chen Kuo, Wei-Chih Su, Fang-An Kuo, Keni Zhang, Chuan-Lin Lai

The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.1, pp. 23-24, 2011, DOI:10.3970/icces.2011.017.023

Abstract The high-performance parallel computing scheme has already been increasingly recognized as an attractive alternative method to resolve the large-scale problems of CO2 sequestration. This paper therefore conducts a parallel computation for simulating multiple well-injection scenarios and long-term CO2 geologic sequestration in a saline aquifer (Figure 1a) based on the ECO2N module of the TOUGH2-MP that is the parallel version of TOUGH2 implemented by the MPI. The numerical performance of TOUGH2-MP is developed on an IBM Cluster 1350 which is composed of 404 nodes and 2 Intel Woodcrest 3.0 Ghz Dual-Core processors per node. Our results indicate that the high-speed parallel… More >

Zhu Jianming, Zhang Hongtao, Wang XiChun, XU Bingye

The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.1, pp. 20-20, 2011, DOI:10.3970/icces.2011.017.020

Abstract Aiming at the limitation and the insufficiency of the research methods for the slope stability in the open-pit and underground combined mining, firstly according to the characteristic of the slope stability in the open-pit and underground combined mining, and the limit analysis method of the slope stability based on the upper bound theorem of the plasticity mechanics, the maneuvering displacement field for the subsidence rock mass of the underground long-wall mining is established, for the subsidence rock mass the function equation is established using the plastic limit analysis method. Secondly, using this method this paper researches the surface subsidence rock… More >