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Online since: October 2014
Authors: Yan Xiao
The Research on Application of New Technique in Road Quality Detection Yan Xiao Hunan Communication Polytechnic, Changsha, 410004,China room 204, No.43 building, Jinfan community, Kaifu District,Changsha, Hunan province, China Keywords:Transient vibration signals;Highway engineering;Subgrade;Degree of compaction;Detection Abstract:In order to be able to maintain the safety ,stabilize the operation, and prolong the service life of highway engineering, it is necessary to place particular emphasis on the detection of highway engineering.
On this basis, study on the corresponding relation between wave velocity and density can also realize the detection of roadbed compaction degree in the highway engineering process, therefore, the transient vibration signal is measured with outstanding value in highway engineering.
III.The Key Point of Implementation of Transient Vibration Signal in Highway Engineering Detection Transient vibration signal can be applied to detection of highway engineering, the main application link of which includes: 1.The detection of highway pavement engineering; 2.The detection of roadbed compaction degree in highway engineering.
According to the above method, staff can make a final judgement and assess the structure stability of the road through the reflected result in the time domain waveform of the vibration image when testing road pavement. 3.2 The application of transient vibration signals in highway engineering pavement compaction detection In the process of the roadbed compaction degree detection of highway engineering, the main method taken is: through the roadbed material in indoor environment, the dry density mxa values corresponding to the subgrade material are obtained in this process.
In this process, due to the moisture content of subgrade materials will have a decisive influence on longitudinal wave velocity, but the influence on Rayleigh wave velocity is relatively slighter.
Online since: May 2016
Authors: Cong Ling Zhu, J. Xu, S. Li, C.H. Zhu
Basic Experimental Study on Rubber Materials for Vibration Damping in Vehicles C.L.
Zhu2, d 1School of Mechanical and Automotive Engineering; Fujian University of Technology, Fujian, China, 350108 2FuJian Key Laboratory of A.E.E.D (FJUT ZDKB1306), Fujian, China, 350108 3Fujian University Technology Library, Fujian, China, 350108 azhucongling@163.com, bxujing@fjut.edu.cn, csmilelisy@163.com, dzhuch@fjut.edu.cn Key Words: Rubber materials for vibration damping in vehicles basic experiments, design optimization, static state and standard state, constitutive model Abstract.
In order to achieve the result more consistent with engineering practice, this series of experiments use the same batch of rubber materials.
Fig.1 Effect Drawing of Direct Compression Experiment of Rubber Material Samples Therefore, this is the relationship between engineering stress and strain acquired through compression testing machine.
Mechanics of Materials. (9) (2010)841~851 [2] P.S.
Online since: May 2010
Authors: Po Kai Hsu, Wei Chen Lee
How to obtain the geometry of an object has been one of the main topics in reverse engineering (RE).
CGI uses CNC milling machines to remove the materials and CCD cameras to capture images.
No results are shown for objects made of other materials.
However, for materials of high hardness, regular milling cutters may not be adequate.
Ku: Biomedical Engineering - Applications, Basis and Communications.
Online since: July 2011
Authors: Ying Yong Li, Zhi Chao Xue, Zhi Ming Chen
It fills the blank in the field of China’s highway construction management philosophy and monitoring means, which is a great significance of the large, complex highway engineering practice.
However, it is still a blank for the internal quality control for the project or key part of the overall process, such as raw material transportation, mixture mixing production, construction mixture ratio, material transfer vehicle passing in and out mixing stations for identification and weighing, road paving, RCC and other data collection, the mathematical statistics and analysis in order to achieve modernization information technology and engineering construction control technology; especially the concept of domestic construction specifications and project management.
The data of the pavement engineering management are complex.
Through the integration of the video monitoring technology used in mixing stations or key project construction sites and the automated real-time production data monitoring technology, and full use of video analysis technology, license plate recognition technology, GPS vehicle positioning technology, GPRS wireless transmission technology, SPC (Statistical Process Control, referred to as SPC) and other important means of secondary data mining and statistical analysis, it forms a complete dynamic system of monitoring engineering quality and safety, makes a breakthrough in the traditional engineering quality and safety supervision system, improves the efficiency of construction management and effectively controls the safety and quality.
The system collects and uploads the real-time data of the raw materials for the production in the asphalt mixing stations, production indicators, the temperature indicators of the road construction by the technology of GPRS wireless transmission.
Online since: August 2011
Authors: Ye Liu, Shu Yan Qi, Zheng Ying Shi
The Key Problems in the Manufacturing of the Bamboo Buffer Packaging Material Ye Liu 1, a*, ShuYan Qi 1,b and ZhengYing Shi1,c 1Packaging Engineering Department, Zhejiang Sci-Tech University, Hangzhou 310018, China aliuyehz@163.com , bjx8123@163.com, callegro2001@163.com. * correspondence author Keywords: Bamboo pulp; Surface treatment; Cushioning performance; Foaming mechanism; Cell structure; Foaming techniques;Bamboo buffer packaging material.
The bamboo fiber development of foam cushioning material has double meaning as raw materials.
Materials and methods Materials.The bamboo powder was obtained from MingZhu bamboo powder Co.
Therefore, the obtained bamboo fiber cushioning materials is hard elastic material, more suitable for small electronics, precision equipment packaging.
Acknowledgements This work was financially supported by the Packaging Engineering Department, Zhejiang Sci-Tech University.
Online since: June 2012
Authors: Jia Li, Shu Xian Zheng, Fan Fen Peng
The relationship between the porosity and the mechanical property was still a bottle-neck in bone tissue engineering scaffold.
Using reverse engineering technology, 5 different porosity cranium scaffolds were first established.
This research result will have high application potential for bone tissue engineering.
In bone tissue engineering, the scaffold porosity is generally within the range of 30%~75% [10].
Yan: Journal of functional materials contents Vol. 35 (2004), p. 2391 [7] J.K.
Online since: October 2013
Authors: Qun Qin, Guang Xia Chen
System Development of Processing Functional Gradient Material Part by Laser Rapid Prototyping Qun Qin1,a , Guangxia Chen1,b 1School of Electromechanical and Architectural Engineering, Jianghan University ,Wuhan , Hubei 430056,PR China aqinqunwh@qq.com, bguangxiachen@qq.com Keywords: System development, Functional gradient material (FGM), Part, Laser rapid prototyping, Path planning.
Path planning of FGM area is one key technology of system development because of one path must contain material information of functional gradient material.
Development and application of functional gradient materials.
Metallic Functional Materials, 2000,17(4):15~23 [4] LIN Wensong.
Development of preparation technology of functionally gradient materials.
Online since: November 2012
Authors: Ya Fei Zhai, Xue Wu Dong, Dai Ren, Kai Mu
The Reconstruction of Model and Analysis for Vortex Disk of Scroll Compressor Base on Reverse Engineering Xuewu Dong1,a, Yafei Zhai 1,a ,Dai Ren1,b,Kai Mu1,c 1 Zhongyuan University of Technology, Zhengzhou, P.R.China, 450007 adxw@zzti.edu.cn,bdianneren@zzti.edu.cn, cmukai629@126.com Keywords: Scroll compressor; Vortex disk; Reconstruction of model; Reverse engineering; Error analysis Abstract.
Thus vortex disk should be reconstructed for model by reverse engineering technology.
Reverse engineering technology implies that a lot of three-dimensional coordinate points are to be collected on material by use of advanced measurement through the processing of measurement data and model reconstruction to establish three dimensional digital model of the material, for design and manufacturing product [1].
Reverse Engineering Techniques [M].
Journal of Mechanical Engineering, 2000,36 (7) :1-4 (In Chinese) [3] Yuming Zhao, Guozhong Zhang, Zhefeng Yu.
Online since: November 2012
Authors: Jie Shi, Qi Quan Zeng
The degradation of paint film of enameled wire belonged to temperature degradation of polymer materials.
[2] SHI Jie, Optimization of Preventive Maintenance Cycle Based on Experimental Feedback in Nuclear Power Plant[J], Nuclear Power Engineering, 2010, 31(6): 106-112
[4] SHI Jie, JIN Xinming, LIU Zhiming et al., “Ageing Assessment, Condition Inspection and Lifetime Evaluation for Safety Related Fuse in Nuclear Power Plant[A]”, Proceedings of the 18th International Conference on Nuclear Engineering ICONE18 May,2010,Xi’an,China
[5] SHI Jie, SHEN Deng-hua, SHIHai-ning, et.al., “Reliability Data Process and Analysis of Instrument and Control switch in Nuclear Power Plant[J]”, Nuclear Power Engineering, 2010, VOL.31, NO.2: p54~57
[7] SHI Jie, Ageing Assessment,Condition Inspection and lifetime Evaluation fot Safety Related Fuse in Nuclear Power Plant[J], Journal of Energy and Power Engineering, Vol.5 No.9, 2011.p892~898.
Online since: October 2011
Authors: Mo Li Sun, Xiao Chun Zhang
Assembly process application of Lean Quality Management Moli Sun1,a Xiaochun Zhang2,b 1Department of Mechanical Engineering, Xi’an Aero technical College Xi’an China 710077 2Xi’an University of Technology Xi’an China 710048 amoly.sun@163.com b7787387@qq.com Key words: Assembly process; Quality Management; Resume; Quality defects; Key parts Abstract: The product assembly as the final manufacturing process is one of the most important part, its quality has a major impact on product quality.
Research on quality management, analysis all aspects of quality control around the assembly process, store electronic resume of assembly process, analysis quality defect, forecast and optimize the matching of key parts, which significantly improve the quality of the assembly process of the enterprise performance and business performance.
Optimization of key indicators of quality In the assembly manufacturing processes, the quality problem of the error between the parts can not reach the design requirements, the analysis found that the root of the problem is the assembly manufacturing sector (such as machining, etc.), arising in the course of various quality problems (such as ultra-poor), but taking into account economic factors and processing level, the manufacturing sector need to be resolved in the assembly.
The key steps in implementation include: ① The size of critical components and their identification, measurement, recording ②With the size of the model to calculate the key, and then construct a model of critical parts. ③ According to the model with the critical parts, with the experimental data of key parts, multi-objective optimization using genetic algorithm based on the priorities with algorithms to calculate the required materials, when the secondary units were the key components with the list [4].
Modern Manufacturing Engineering. 2007 (4) :54-57
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