Fracture toughness

After defeating the Atlanta Falcons last Sunday for their second straight victory, the Philadelphia Eagles took their talents on the road to CenturyLink Field against the Seattle Seahawks. The Eagles came into today's game with a record of 1-4 on the road. Nevertheless, the Eagles were not able to change their fortunes as they were dominated on both sides of the ball, losing to the Seahawks 26-15. To open up the game, the Eagles' defense did an excellent job of forcing Seahawks quarterback…

It was the season of 1995-96 when the Chicago Bulls NBA team led by hall of famers Michael Jordan, Scottie Pippen and Dennis Rodman did what no other team has done. They had won 70 games and were able to finish the season with a (72-10) record. Until recently no team has been considered able to break this record, but the Golden State Warriors have shown many people why this year could be a record breaking year. The Golden State Warrior have a vision that they are not just playing aimlessly…

4. Total Strain Energy theory or HAIGH’S THEORY 5. Maximum Distortion Energy theory or VONMISES AND HENCKY’S THEORY 1. Maximum Principal Stress theory (M.P.S.T) According to M.P.S.T Condition for failure is, Maximum principal stress (1) failure stresses (Syt or Sut) And Factor of safety (F.O.S) = 1 If σ1 is +ve then Syt or Sut σ1 is –ve then Syc or Suc Condition for safe design, Factor of safety (F.O.S) > 1 Maximum principal stress (1) ≤ Permissible stress (per) Where permissible…

2.1 Silicon-Carbide (SiC) Initially, Silicon carbide (SiC) was accidentally introduced by Edward G. Acheson in 1890. Silicon Carbide can be stated as a chemical compound of Silicon and the carbon. Edward G. Acheson was running an experiment on the synthesis of diamonds. At that time, it was produced by a high temperature electro chemical reaction of sand and carbon. We can also find the silicon carbide very rarely in nature in very small amounts. Also Edward G. Acheson was the first person to…

How Electro-mechanical Actuator Works? A Rotary Electromechanical Actuation system with an Electric Motor, a gear box & an elastic spring to absorb peak torque loads experienced during operational life. The Schematic below describes the system. Fig. 1.1 Rotary Electro-mechanical Actuator Gearbox Requirements: The Gear Box at the Motor Output is intended to amplify the torque output of the Motor with reduction in speed. The tentative ratio is set at 10:1. Functional Requirements of…

practicing in an incorrect way. Many aspects of dedication in golf apply for every sport, but what makes golf different is its difficulty to remain dedicated to it. If anything, golf should automatically be considered a sport just because of its sheer toughness. The reason for this difficulty is because players encounter new problems every day that they need to constantly work on. In any other sport, such as basketball, it is very rare for a player to completely lose their shooting form, but in…

material by measuring the amount of the energy required to cause the material to fracture, using Avery Denison 6709 IZOD impact tester. Materials and Methods Apparatus: Three specimens with a machined 45° notch (V-Notch) at room temperature {Polycarbonate, Polyamide (Nylon 12) and High Impact Polystyrene (HIPS)}. Avery Denison 6709 IZOD impact tester, used to measure the energy required to cause the specimens to fracture. Figure1. Vernier calliper used to measure the dimension of the…

Concussions are a major public health issue, and particularly so in the setting of sports. Millions of athletes of all ages may face the risks of concussion and repeat concussion. A concussion is a clinical syndrome of symptoms and signs occurring after biomechanical force is imparted to the brain. This kind of injury is something you would want to prevent from happening so always do what is suppose to be done. Thesis Statement: Concussions in sports have had a profound effect on athletes, which…

P1 Structure; Ceramic – Glass-ceramic I have chosen glass-ceramic to write about, however, I have no knowledge on this so I will have to use quite a bit of referencing to get the information. Facts; Glass-ceramics have an amorphous phase and one or more crystalline phases and are produced by a feature called "controlled crystallization" in contrast to a spontaneous crystallization, which is usually not wanted in glass manufacturing. They don’t find it ideal to have "spontaneous…

difficult due to their anisotropic and non homogeneity in nature which consist of distinctly different phases, their response to machining. Machining of composite materials is rarely avoided in view of losing the strength of components due to interlayer fracture and delamination damage. In specific situations where metal inserts are inevitable in case of joining or affixing with other mating part, in this situation milling and drilling operations can’t be avoided with respect to aerospace and…