The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The gas dust removal process in filters is achieved in the formed filtered particles layer, which thickens and becomes denser. In the gas filtering process through the porous diaphragm the precipitated dust is located in agglomerated state. Layer packing with particles accumulation is connected with the aggregates reformation. A layer porosity and particles calculated diameter are variable quantities...
Based on the laboratory experiments, the drawing galling behavior in macro-scale is investigated in the square cup drawing of a high tensile strength steel SPFC590 in semi-dry condition. When using the non-coated dies (cold alloy tool steel (SKD11, SLD) and austempered ductile irons (ADI)) in semi-dry, the macro-scale galling can clearly observed on die and drawn cup surface after a few drawing cycles...
Fine blanking process on plane blank holder utilizes three tooling elements: a punch, a plane blank holder and an ejector to generate a highly compressive stress state and pure shearing forces to constraint the deformation of sheet metal within the narrow blanking clearance zone. Numerical simulation of fine blanking for steel 20 was performed using commercial FEM software DEFORM, and element deletion...
Now more flexible materials are used as the infrastructure surface coating that is an important part of the durability of protection facilities. Sandstorm-Environment has great influence on the durability of those coating by erosion and deterioration. In this paper, based on analysis of characteristics of sandstorm-environment and the mechanical properties of the flexible material of the coating,...
Sintered Nd-Fe-B magnet is the third generation rare earth permanent magnetic material. In this paper, contrasted with traditional grinding, the experiment of radial ultrasonic vibration aided grinding of sintered Nd-Fe-B permanent magnetic material was conducted. The effect on normal grinding force of grinding parameters was analyzed respectively in the two grinding processes. Experimental results...
The forces acting on the rake and flank face are analyzed in details, through investigating the mechanism of the cutting surface formation according to the characteristics of micro-cutting. The relationship of rounded edge radius and cutting force is presented. The model of micro-cutting is established and the relationship between the cutting forces and the main parameters are obtained. The mechanism...
In this study, the loading-unloading data obtained from the nono-indentation tests in combination with the peridynamic simulations are used to determine the elastic modulus and yield stress of the material. A simple search algorithm minimizing the difference between the predicted force- indentation depth and experiments leads to the determination of the material properties. Nano-indentation experiments...
This article brings out a brand-new equipment-Screw-gas Bulk Sucking and Taking Equipment for the solution, which applies both the theory of vertical screw conveyor and the theory of pneumatic handling. It constitutes of 3 parts; respectively from bottom to above they are: Centrifugal force Separating Part, Screw Lifting Part and Pneumatic Conveying Part. Particle material is drawn into the equipment...
Biomimetics and biorobotics form a thriving field of modern scientific research endeavors. The development of wall-climbing robots boasts a wide array of potential real-world applications. With this technology still in progression, a simple and fundamentally sound robot has been created to serve as a test bed and proof-of-concept robot. The developed robot is inspired by the concept of Mini-WhegsTM...
This paper presents a novel method of contour reconstruction from dexel data solving the shape anomalies for the complex geometry in virtual sculpting. Grouping and traversing processes are developed to find connectivity between dexels along every two adjacent rays. After traveling through all the rays on one slice, sub-boundaries are connected into full boundaries which are desired contours. The...
A robotic gasbag polishing technique based on flexible polishing principle can make polishing process more stable and effective because the rubber provides cushioning action and almost all abrasive powders in the contact area are involved in the process of material removal on mould surface. Finite element method using Mooney-Rivlin constitutive model is adopted to obtain a referenced result of contact...
Advances in micromachining technology can facilitate the integration of SAW (Surface Acoustic Wave) devices and CMOS circuitry on IC scale substrate for Monolithic fabrication. The optimal design and performance of these filters can be reached by using new Smart materials. The key component in the structure of the SAW device is the piezoelectric materials used which depends mainly on some important...
Deformation of Bi2Te3-based materials was performed. The source disks with nominal compositions of (Bi0.25Sb0.75)2Te3, (Bi0.25Sb0.75)2(Te0.95Se0.05)3 and (Bi0.90Sb0.10)2(Te0.95Se0.05)3 were cut from the ingots grown by the vertical Bridgman method (VBM). The disks were deformed by either cold press (CP) or pressure current heating (PCH). The crystal structures of the deformed materials were identified...
The real time monitoring and control of resistance spot welds is a problem of critical importance in automotive and many other manufacturing industries. However, till this date, there are no reliable, low-cost, non-destructive techniques for predicting the size and strength of the weld nuggets in real time. This paper investigates the usage of voltage, current, and force data for the above tasks....
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.