Thermoplastic

3D Printing and the Additive Manufacturing Process Additive manufacturing (AM) is a process where an object is created by adding layer-upon-layer of material. This basic process requires the use of a computer, CAD software, the material(s) and the appropriate machine to fabricate the end result. AM has been used in many applications. At first, it was used in Rapid Prototyping (RP). Today, AM is used to create end-products used in many different applications, from aerospace, automotive and…

The Fins in this project are based on the Thresher shark. Its tail is shaped like a thresher, and the shark uses it as a weapon to stun its prey. Since this shark is an active predator, its tail should not only be used as a weapon, but also a great source of propulsion. In order to design and compare a fin to this extraordinary shark tail, a simple trapezoid was created to set a base model. Its dimensions are as follow: This fin is the base model designed to set the first data of propulsion, so…

The Renaissance was a time period where many things were invented. Some things that were invented are the first mechanical clock, the trigger for a gun, oil painting, bell chimes, golf ball, wood engravings, bottled alcohol, and many more. The main invention I am going to talk about is the golf ball. Back in the 1300’s the golf ball was first created. The golf ball is very different now than when it was first invented during the Renaissance. When it was first produced it was obviously made out…

In recent years polyhydroxyalkanoates (PHAs) have received considerable attention due to their diverse properties regarding thermoplastic and elastomeric nature as well as biocompatibility and biodegradability. PHAs produce by bacteria in the form of storage compound as carbon and energy source under the stress of nutrient(s) in the availability of abundant carbon source. While bacteria come under the stress of nutrient these energy storage compounds are break down in smaller fragments that…

Task-5 a) • Metals Metal structure is made up of crystals of metals which are made up of positive metal ions and these ions are surrounded by a sea of delocalized electrons. To separate these substances from this crystal lattice a lot of energy is needed. In between the positive and negative ions is present a strong electrostatic force of attraction. That is the reason why metals have strong melting and boiling points. In order to slide one layer of the metal ions over the other layer very less…

Powder coating is the process you use to apply a coating without using solvents. This is the newest coating technique in the industry right now. You usually apply this type of coating to create a hard finish on metals and because it allows you flexibility to apply on a different layers of thickness. You would see this finishing in materials such as aluminum, medium density fiberboards, fusion-bonded epoxy and acrylics, usually on automobile finishing. To produce the powdered finishing, polymer…

Treatment Plan 4.3.1. Immobilization The patient lies supine with his arms at his sides, with the spine as straight as possible. Patients receiving radiation to the head and neck region require a thermoplastic mask for immobilization (Barret et al., 2009:138). Head and neck immobilization is achieved by using a specialized head-rest and wedged blocks, for optimal neck support. A knee-rest is used to facilitate comfort. The mask is made prior to the…

Mallet finger is a type of fracture which occurs in the distal joint of the finger and causes abnormal finger flexion at distal joint. There are two ways to treat mallet finger. One of them is treating by splint that is a thermoplastic splint, it can be custom or ready-made to keep the finger in hyper extension position and the patient must keep it for a while until the bone will have healed. The other method is treating by Kirschner wire (k- wire) this wire should be inserted inside the bone to…

durable, and scratch resistant, however, it is classified as a red material due to the toxins it releases during manufacturing and disposal (Lee and Bony, 2009). It also caused the death of 87 people in a PVC pipe fire in 1980 (Lee and Bony, 2009). Thermoplastic urethane or TPU was a more environmentally friendly, yet more costly alternative; using TPU would increase the cost of arm pad assembly by 30% (Lee and Bony, 2009). In this case, it is money/savings versus following heritage. Herman…

would require a subsequent masters degree or a degree in a more focused field of engineering. With the help of family I was able to procure a position at an oilfield company in which I was tasked with troubleshooting, researching, and designing thermoplastic liners for oilfield tubing. While this job had the potential for growth and development, it quickly became apparent that my ideas and innovations would never take shape in my lifetime. Around two years in to that job, I made a conscious…