Advanced Materials Research Vols. 311-313

Abstract: The effects of mix proportions on the properties of porous ecological concrete, and its coexistence with plants are discussed in this paper. In conclusion, the strength of porous ecological concrete is governed simultaneously by water cement ratio and cement content. Permeability is increased with any increment in aggregate gradation and any decrease in cement paste content. The thicknesses of concrete blocks and topsoil affect the growth of plants.

Abstract: Co-firing of biomass and coal has drawn many attentions because it can reduce the amount of CO2 release of the coal power plant/incinerator. However, the higher amount of sulfur, chlorine, potassium and calcium in biomass could lead to a more serious corrosion. In this study, the high-temperature corrosion of Fe-Cr-Mo alloy at 400 °C to 600 °C in co-firing of biomass and coal was performed. The results show that the weight change of specimen tested in co-firing of biomass and coal is 1.7 to 2.4 times of that for specimen tested in dry air. Also, the weight change of specimen tested in co-firing increased with the tested temperature and time increased. For the specimen tested in co-firing with different ratio of biomass/coal, the weight change of specimen increased with the ratio of biomass/coal increased.

Abstract: Wheat precision seeding test system is designed to develop a measurement device of wheat precision seeding with high efficiency and precision. The wheat seeds are falling from the seed sowing device to the conveyer belt. Using image processing techniques, the system gets the pictures of seeds on the belt. Then these pictures are processed and analyzed to calculate the qualified rate, reseeding rate and leakage sowing rate, etc. This paper introduces the whole structure, design parameters of the system, the hardware and software of the image acquisition system. Through selection of a proper threshold, the method of seed identification and seed-space measurement are given in this paper.

Abstract: Welded structure is usually used in current nailing machines. When a nailing machine was used for a period of time, the base of the machine was deformed, so products produced with the machines become waste. The reason for these problems is that the design of window shape around the body column plate is unreasonable, so the plate often cracks. In addition, the hydraulic system in current nailing machines is unreasonable too, which makes production less efficient. Aiming the current problems of the nailing machine, finite element analysis software ANSYS is used to analysis and find the machine’s stress concentration areas. According to the analysis results, the shape and size of these areas are re-designed, which has the minimum area stress and deformation. The welded machine body is changed into a casted one, and the other modules are also re-build, all of which make the machine has longer service life. Through the process analysis, the hydraulic system is re-designed too, which improves the equipment productivity greatly.

Abstract: The number of the religious architecture makes up 70 percent of the total of existing traditional buildings in China, in which the largest proportion is the Chinese Buddhist architecture, this paper has been studied in this kind of building. Firstly, the religious background and development history of the Chinese Buddhist architecture is introduced, and this paper puts forward that this architectural form was affected by the ancient folk houses. Compared to Buddhist architecture in other countries, they are majestic in shape and beautiful elaborate in decoration, the whole form and nature landscape melt into one another. Secondly, religious spaces are analyzed, including the location of Buddhist temple, the overall layout and the single building. Most temples were built on the hill, and the Buddhist hall is the center of architectural complex. Single building is very similar, and its position is attached to its status in spatial sequence. Thirdly, the design concept of Buddhist architecture was discovered. It was pointed out that Chinese traditional philosophy, i.e. the view of the nature, determines the space composition inside and outside of Chinese Buddhist architecture. At last, the paper summed up the design of Buddhist architecture and gave a prospect about the way of its future development.

Abstract: Key words：Atmospheric and vacuum; distillation; process; pollution Abstract：The atmospheric and vacuum distillation unit was analysed on the device's size, composition, technical route and process. The results show that the flue gas produced by atmospheric and vacuum furnace is the main emission source, and the main pollutants in the flue gas are SO₂, NOX and soot. The wastewater pollution is mainly electric desalting salt water, and it was treated in saline wastewater treatment plant in the factory.

Abstract: In order to be considered in the calculation of punching force of cold die random distribution of material properties, meanwhile including success and failure punching during the gradual change process in the calculation. Based on probabilistic fuzzy reliability point of view, the success or failure determination will be extended to fuzzy events. Based on fuzzy reliability, the punching force of cold die calculation method will be also given when taking the impact of random distribution of material properties into account. Related analysis formulae and the fuzzy criterion of success or failure of punching are established and derived. Through which, design and engineering process are integrated, the designer will be more reliably to predict the success or failure of the punching during the design stage. The processing error of lack of statistical data and the objectivity of the success or failure determination criterion will be easily solved. Economy cost and reliability design of geometrical curve design will be also considered.

Abstract: Characterization of Environmentally friendly materials used as wastewater treatment material has been studied in order to compare the quality of wastewater in Chiang Mai, Thailand on two types of treatment materials, which are cow bone char (CBC) made from Thai cow bone char cleaned and calcined at 850๐C and the a mineral called “zeolite” (ZLT) bought from Kamthiang market, Chiang Mai. The physical characteristics of both types of materials indicate that the CBC has a higher density than the ZLT but has lower pore volume than the ZLT. The effect of density on the water quality improvement was showed that CBC was a suitable type of wastewater treatment material because their high density can fix them in the batch system.

Abstract: Recently, the damaged building and loss of life have been increasing by man-made disasters. In this study, the blast resistance performance of fiber reinforced concrete against explosion was evaluated by the emulsion explosive and AUTODYN. The concrete without fiber was penetrated by emulsion explosive of 4605 kJ/kg and its back side was fractured heavily. The concretes with PVA, PE and Steel fiber have a higher blast resistance than that of concrete without fiber. Consequentially, the blast resistance of concrete was analyzed from viewpoint of fracture mode by AUTODYN and it was concluded that the fiber content is a beneficial for the blast resistance performance of concrete.

Abstract: A novel robotic vision and control system using cross-lines laser indicator and range finder simultaneously is developed. This modular have fine crossed lines indication of 1.2mm sharpness at 5 m distance, and simultaneously ranging accuracy of 3 mm up to the range of 100 m. The theoretical derivation, CAD/CAM design, and lens design together with experimental results will be presented in detail.