A creep-testing machine measures the alteration of a material after it has undergone stresses. Engineers use Creep machines to determine the stability and behaviour of a material when put through ordinary stresses. They determine how much strain (load) an object can handle under pressure, so engineers and researchers are able to determine what materials to use. The device generates a creep time-dependent curve by calculating the steady rate of creep in reference to the time it takes for the material to change. Creep Creep is the tendency of a material to change form over time after facing high temperature and stress. Creep increases with temperature and it is more common when a material is exposed to high temperatures for a long time or at the melting point of the material. Creep machines are used to understand the creep of materials and determine which type can do the job better, which is important when making and designing materials for everyday uses. They most commonly test the creep of alloys and plastics for the understanding of their properties and advantages of one material's use over another. Background The first creep testing machines were created in 1948 in Britain to test materials for aircraft to see how they would stand in high altitudes, temperature and pressure. The machines were first developed to further calculate and understand the steady rate of creep in materials. Design Researchers look to test objects with a creep machine to understand the process of metallurgy and the physical mechanical properties of a metal, test the development of alloys, receive data from the loads that are derived and to find out whether a sample or material is within the boundary of what they are testing. The basic design of a creep machine is the furnace, loading device and support structure. The main type of creep testing machine is a constant load creep testing machine. The constant load creep machine consists of a loading platform, foundation, fixture devices and furnace. The fixture devices are the grips and pull rods. Load platform or load hanger is where the object will endure pressure at a constant rate. Grips hold the material in a certain position. Position is important because if the alignment is off, the machine will deliver inaccurate creep readings. Dial Gauge is used to measure the strain. It is the object that captures the movement of the object in the machine.