Lab Report : Spring Steel 60si2crva Foils With A Thickness Of 120 Μ M

This report will cover the two most used methods of experimental stress analysis; electronic resistance strain gauge and digital image correlation and their relevance in the aerospace industry. Background information, methods of preparation and operation and ways to obtain accurate results will be covered throughout the report.

Curled Metal Inc (CMI) is a company whose strategy evolves selling products that used certain types of metal as a raw material. CMI rapidly grow in the last decade due to Slip-Seal, a product that meet the demanding specification of the automaker imposed by US strict environment legislation. In order to diversify offer from auto industry, CMI’s management decided to examine a new application for curled metal technology.

Cumberland Metal Industries (CMI) was a company which sold metal as raw material in other products. After the company had developed the product – Slip Seal that could meet the demanding specification of the automakers, it had grown rapidly over the past decade. The sales increased from $750,000 in 1991 to over $55 million in 2007. However, the sales decreased from 61 million in 2006 to 55 million in 2007, a net decrease of 9.5%, the net profit decreased from 5.7 million in 2006 to 3.5 million in 2007, a net decrease of 38.7%. The company was under the pressure to diversity its products in order to increase the sales and the net profit. CMI had developed new product, curled metal

Although the penetration depths for different situations are not the same, but the model structure and the position of the nail didn’t change. Thus, here we used the 100% penetration model to represent all other penetration situations. The parameters shown in Fig.5-2 are described in table 5-2.

Abstract. Additive layer manufacturing regarded as the driver of a “third industrial revolution” can give the industry and science significant benefits over existing manufacturing techniques. Yet it has some disadvantages, with one of them being a wide variation of mechanical properties of additive manufactured parts. The mechanical behavior of produced components is known to be profoundly affected by a microstructure, which, in turn, depends on the material and process parameters. In this paper, a two-dimensional numerical model is developed to simulate the grain structure evolution during laser additive manufacturing. The cellular automata method is applied to describe the grain growth. The Goldak’s heat source model is used to define the heat input during laser melting. Selective laser melting process, which involves sequential deposition and melting of powder layers, is considered. First layer is deposited on a polycrystalline substrate. The laser beam moves perpendicular to the area under consideration. The paper discusses the influence of the heat source parameters on the grain

The first report of a commercial use of a Zr-based BMG was the confection of golf clubs (JOHNSON, 2015). Liquidmetal Technologies Company made the first attempt to industrialize the use of this new engineering material. They were unsuccessful for two main reasons: (1) the newly developed die-casting route introduced flow lines on the surface of the part that acted like crack-initiation sites, (2) in 1997 the US Golf Association restricted the limit of how ‘springy’ golf clubs could be (JOHNSON, 2015). Zr-based BMGs can transfer up to 99% of the applied energy to the golf plate, whereas steel golf plates transfer 60% and titanium transfer 70% (WANG, DONG and SHEK, 2004). BMGs were also applied in other high-end sporting goods such as tennis rackets, and may find applications for baseball bats, bicycle frames, hunting bows, and skis (WANG, DONG and SHEK, 2004).

ANSYS is a software package that allows various simulations in a range of different fields and industries to be modelled and analysed. The main fields within the program include, computational fluid dynamics, structural mechanics, and electromagnetics to mention a few. The use of this software allows an individual or business to test various cases of product use, eliminating the outlay cost of building and testing many prototypes. This saves on time and costs and is a lot faster and more accurate then computing a hand analysis. In certain circumstances it allows for test cases that would otherwise not be possible to set up in a lab [1] [2].

This report is to highlight the methods, results and theory relevant during an engineering experiment called “cold rolling of metals". The purpose of this report is to show how readings obtained from the set-out experiment, can be evaluated to determine the behavior of 3 selected materials; Brass, Copper and Aluminium through the process of cold rolling. The form of the materials are in small strips which are processed via cold-rolling method 4 times from their original state to evaluate the effects incurred on hardness values, width, length and thicknesses. Hardness values/vickers numbers are determined for each material using a Vickers hardness tester and the measurements of width, length & thickness taken using a vernier

Figure 8.2 and 8.3 show the resultant multi-frequency phase and amplitude responses of the sub-surface slots after subtraction of the reference data obtained from the crack-free model. As can be seen in figure 8.2 and 8.3 the locations of the slots can be easily determined by simply looking at the regions where the highest phase and amplitude change occurred. These results are in agreement with the previous work carried out by Fletcher et al [7, 39], which used different types of eddy current probe to inspect straight sub-surface slots.

There are various NDT methods of inspecting the internal defects of complex surface parts, e.g. radiography, eddy flow, ultrasonic, etc. Amongst these testing techniques, ultrasonic testing has an important role due to strong penetration, good direction, high sensitivity, overall comparative low cost, and being harmless to the human body and the material of the parts.

A provisional patent for the described technology was filed with the concerned authority. The technology was developed keeping in mind the most concerned or pressing problem that is being faced by the industry. The well-known DLC coating is very good in reducing friction and wear resistance as well. However, when DLC was applied to the components where the

The electromechanical performance of the SR composites was tested using circular actuators. Considering the safety and utility, the loaded electric field on the samples was 50 kV/mm. The actuated strains of the BT/SR composites are shown in Figure 5(a). With increasing electric field, the actuated strain of the samples increases significantly, because it is proportional to the square

DESIGN AND SURFACE MODIFICATION OF WIND TURBINE BLADE USING ANALYTICAL AS WELL AS VIRTUAL METHOD

3.)Generation of pu – mu interaction curves: The magnitude of Pu determines the neutral axis. On location of the neutral axis the strain distribution is known. This can then be used to solve for the value of Pu and the ultimate moment Mu. It is therefore obvious that the solution to the above set of equations can be found as a closed form solution. This is because the location of the neutral axis is required for the calculation of the normal force Pu, while the value of Pu is itself required for the location of the neural axis.For the purpose of developing the interaction curves the location the neutral axis is assumed and the values of the normal force and the moment are calculated. The neutral axis is then changed to calculate a new set of Pu and Mu. This is repeated to get the interaction curves of PuVs Mu. The figure no. 1 shows the interaction curve for d/Dfrom were area of steel is determine. Following steps are followed:

Deterministic grinding process development for metal bonded diamond grinding wheels through patterned grinding wheel by utilizing micro EDM comprises four main investigation on: (1) material removal mechanism considering interaction between diamond grains, workpiece, metal bond and electrical spark, (2) effective pattern geometry design for effective material removal and grinding performance, (3) application of micro EDM to create the pattern on the metal bonded grinding wheel, (4) analysing the grinding performance on hard materials such as Inconel and carbide. We believe that knowledge obtained in these four subjects through journal publications and conference/seminar will benefit academics in the field of manufacturing technology, surface science and materials engineering. Especially, establishing a FEM/SPH model which can present different material removal phases, rubbing, ploughing, and cutting during grinding and mechanical interaction between abrasive grains, metal bond, and workpiece will benefit the researcher in the field of micromachining by providing advanced understanding on metal cutting mechanism at micro scale for hard materials. Because grinding has the most complex cutting mechanism among other machining processes, detailed understanding of this certainly will help to comprehend other machining processes cutting mechanism easily. Application of micro EDM to dress the metal bonded diamond wheels will show how electrical discharge energy is controlled to