Advanced Materials Research Vols. 230-232

Abstract: Secondhand tobacco smoke (SHS) in enclosed spaces is a major source of potentially harmful airborne particles. To quantify exposure to PM2.5 because of SHS and to investigate the interaction between pollutants from SHS and vehicular emissions, number concentration of PM2.5 were measured inside a moving vehicle under different ventilation conditions. Air purification was found to have a significant effect on PM2.5 in the cabins of vehicles. Purification can achieve higher and more consistent results in terms of protecting drivers from SHS while commuting on the roads. Moreover, air purifiers are economically and technically easier to implement than other chemical technologies currently in use. Because the study with the air purifier was conducted in only one vehicle, more vehicles should be tested with and without air purifiers to achieve a statistically robust conclusion regarding their performance.

Abstract: In the paper are presents the results of CNC manufacturing applications. Material what was processed was Inconel 718 who is a heat resistant super alloys. Was presented the cutting tools insert, characteristics and methodologies haw to obtain much more productivity and in the same time, the cutting tool parameters to keep much more time possible the geometrical characteristics of the cutting tools. Was analyzed the wear and what are the most common type of wear who appear at this special applications. Using high technical metrology equipment was underline the structure and the value of insert wear.

Abstract: This paper deals with the description of a method for the measurement of the nanotribology properties and microscopic interfacial frictional behavior with Atomic Force Microscopy (AFM). AFM force-displacement curve is utilized to determine the nanotribology properties. The interfacial coefficient of frictional force can be derived from a serial of calculations. A well-defined contact area is measured to study the frictional force and friction stress. The roughness of contact surface influences the contact between friction and surface forces. The study of roughness parameters corresponds to evaluate the friction and the interfacial strengths. Local variation in micro/nano tribology is also measured. The measured surface topography (3D profiles) are then applied to determinate the potential energy in molecular dynamic (MD) method to study the atomic scale frictional interactions.

Abstract: K9 glass is regarded as one of the most difficult-to-machine materials due to its mechanical characteristics, which is known as an excellent performance optical material. In this paper, rotary ultrasonic face milling (RUFM) process is introduced into machining flat surface of K9 glass using right-angle diamond cutter for the first time. It studies the influence of process variables (spindle speed, feedrate, cutting depth, and cutting width) on cutting force and surface roughness through the single-factor experiments. The cutting force is measured by a KISTLER dynamometer, and the surface roughness is measured by a talysurf. The investigation also includes a comparison between RUFM and diamond milling. The experimental results tell that the RUFM process can significantly reduce cutting force, which inferred that RUFM can have less tool wear and longer tool life. It also shows that the surface roughness in RUFM of K9 glass is slightly higher than that obtained in diamond milling.

Abstract: Complex surfaces have been widely used in engineering. However, the current general-purpose CAD systems do not provide the modeling method of some kinds of complex surfaces such as parametric surfaces. In this paper, complex surfaces are generated by calculating the coordinates of the data points on the surfaces, creating the data files, importing the files into UG (Unigraphics), and then making use of the surface modeling functions of this software. Taking a bicubic B-spline surface for an example, the main steps of modeling of complex surfaces are presented and the modeling errors are analyzed in detail. A test is conducted to verify this approach.

Abstract: Automobile design evaluation is the concrete application of the existing evaluation methods in the automobile design area to obtain concrete conclusions. This paper through the study of eye tracking technology and product design evaluation, then use examples to analyze and demonstrate the application of eye tracking in the automobile design evaluation, in order to summarize a product design evaluation process.

Abstract: The effect of five constraint conditions in cooling process on the residual stress distributed in the adhesively bonded single lap steel joint under a 100°C thermal shock was investigated using the elasto-plastic finite element method (FEM). The results from the numerical simulation show that the effect of constraint model is significantly to the residual stress distributed in both mid-bondline and adherend near the interface of the adhesively bonded single lap steel joint. The constraint to the longitudinal of the adherend is much significantly to the residual stress than that of the transversal one. Comparing the action of the constraint model C and model E, the effect of the model E on the residual stress along the mid-bondline is higher than that of the model C.

Abstract: Emotional interaction is a key aspect of furniture design. It focuses on changing the way of interaction between human and furniture, from one-way information transmission to two-way information transmission. So users can get more fun and pleasure in home life. The concept of emotional interaction is analyzed, and then its application to furniture design and the development trends are explained.

Abstract: Abrasion performance is an important performance parameter of polycrystalline diamond compact. This paper focuses on the research for test method of PDC abrasion performance. With the improvement method, the abrasion performance of PDC with five typical macroscopic interface structure such as planar structure, v-groove, u-groove, ring groove, ring claw-tooth are tested at normal temperature and after heating, With SEM, we study on its mechanism of abrasion performance due to different macroscopic interfaces structure, analyze the reason why PDC abrasion performance is different with the changing of PDC macroscopic interface structure. The research result shows that the temperature influenced the wear property and the anti-impact property of PDC obviously. In the same technological conditions, the interfacial structure of the PDC layer and WC-Co substrate has little influence on the abrasion performance, and the diamond and grains can sinter better, causing the excellent abrasion performance of PDC.

Abstract: In the automobile development process, importing the modeling of design history and domain knowledge, realizing the integration of design process and knowledge, the traditional development activities can be improved and product development can be speeded. Process oriented knowledge system is built, which is constituted by domain knowledge, process history and design intent. It is validated in the automobile design process and the result is satisfactory.