Different Kinds of Engineering Material Assignment - 1

Different Kinds of Engineering Material - Assignment Example Brittle fracture basically is a fracture where there is a rapid run of cracks within the stressed material. In this case, the crack works much faster and it is difficult to understand the fracture before failure occurs. The scientific principle in the brittle fracture is that the crack moves close to the perpendicular where the stress is applied, because of this action, there remains a perpendicular fracture which leaves a flat surface at the broken area. Apart from having a flat fracture surface, brittle material more or less showcase a pattern on their fractured surface. Fatigue is the most common material failures found in the engineering field. Fatigue is a kind of failure mode where the material tends to fracture by means of progressive brittle cracking with regard to a repeated cycle of stress. Here, the stress implied on the material is of lesser intensity which means below the average strength. Creep is a failure mode which occurs on engineering materials at an elevated speed. Basically, it is seen on stainless steel when there is constant stress on the material with exposure to high temperatures. According to â€Å"The stress that produces a specified minimum creep rate of an alloy or a specified amount of creep deformation in a given time (for example, 1% of total 100,000 h) is referred to as the limiting creep strength or limiting stress†. The destructive test method is performed to understand the strength, hardness, and toughness of a material. The test utilized here is the stress test and for this purpose, the material chosen was the aluminum crank arm. The specimen was obtained and different loads and stresses were applied on the same. The destructive testing which is also known as mechanical testing displayed some results when stress was put on the iron with the help of a hammer.