3D modeling

John Zarka Mr. Kirby Forensic Science March 22, 2016 Shoe Print The basic theory behind footwear analysis is that, much like fingerprints, shoes may leave behind either prints (referred to as "imprints") or impressions that can be examined by investigators. The type of evidence left behind depends largely on the type of surface traveled. For example, a shoe will leave an impression in loose sand, but on a hard surface like concrete or linoleum, it will leave an imprint. These imprints or…

3.2 Analysis of chip formation Fig. 7 shows the chip forms obtained during milling of the Al7075 (a) and MMCs (b) using the uncoated carbide inserts at a feed rate of 0.1 mm/tooth, machining speed of 290 m/min and axial depth of cut of 1.3 mm. The Al7075 chips formed during milling exhibited a smooth and shiny surface, and were in a semicircular and parabolic trapezoidal wave with a small radius and a saw-tooth-form, as shown in Fig. 7 (a). Fig. 7 (b) shows the chip shapes formed during the…

The rule for first normal form (1NF) is a table in which the intersection of every column and record contains only one value. In other words a table that contains more than one atomic value in the intersection of one or more column for one or more records is not in 1NF. The non 1NF table can be converted to 1NF by restructuring original table by removing the column with the multi-values along with a copy of the primary key to create a new table. See Figure 8.4 for an example of this approach.…

Hierarchal Database “In the network model, the data are represented by collections of records and relationships between data are represented by links. This structure holds for the hierarchical model as well. The only difference is that, in the hierarchical model, records are organized as collections of trees, rather than as arbitrary graphs.”(http://codex.cs.yale.edu/avi/db-book/db6/appendices-dir/e.pdf, 17-10-2014) This database model use rules as each child has one parent and each parent can…

THE BEST 3D PRINTERS UNDER $1000 BY NAME: So, if you 're not already salivating over the prospects of owning a 3D printer, you will be in a minute. With all the capabilities they posses, you 'd never expect one of these machines to be priced within reach of the "average" consumer, but in fact, many are. While there are high-end printers, mostly used by major companies, that could easily run you 10 or 20 thousand dollars, there are numerous models available for less than one thousand. Here are…

Locking mechanism The joints had to be such that they can be loosened and tightened at any required configuration, this obstacle was overcome by the use of wing nut at the end of the screw instead of a normal nut, and the image below shows the wing nut and bolt. This is the most cost effective yet strong way of locking the joints compared to knobs and other clamp mechanisms. Materials For the Robot Arm Construction our group members had a variety of materials to choose from, these materials…

creating the product while in its first stages. The academic courses needed to be taken to become an industrial designer are english composition, communications math and physics. Some artistic classes commonly taken are product design, computer modeling, drawing courses and technical design. Most positions as an industrial designer require a 4 year bachelor’s degree, several years of work related experience, on-the-job training and career…

3D Printing in Medicine Technology today has come so far and is progressively advancing for tremendous changes in the healthcare fields. These changes will not only save lives, but will give patients quicker, cheaper, and more precise care in many aspects. A new cutting edge technology available today in medicine is 3D printers with computer aided drafting software to create designs that can actually mold medical devices and parts for patient care. Even though 3D printing was invented in the…

Military: - 3D printing technology has the potential to play a crucial role in combat. Military applications often need custom designed and miniaturized units. 3D printing can support rapid production and development to fulfill the specialized functional requirements of the military. Army is already using 3D printing in combat zones. 3D printing can influence strategies and tactics of future aerial combat and Air Force is looking into the advanced manufacturing capabilities that 3D printing has…

Plastics (Phenolic resins, Epoxy resins, Polyesters and Polyurethanes) are materials which make up the objects which we use in our everyday lives such as phones, cars, cooking utensils, computers and shoes, (http://www.slideshare.net). Plastics are a group of material which can either be synthetic or naturally occurring. Plastics are considered as polymers a substance which has a molecular structure with a large number of units bonded together, (http://www.chemheritage.org). Most plastics are…