In use, all particles and metal structures will be exposed to external forces that can cause stresses to cause deformation or deformation. To guard against the consequences arising from the presence of such stresses and to maintain them within the limits allowed for a loading, it is necessary to understand the materials suitable for the purposes of various plans.
The manufacture of finished or semi-finished goods should be based on the characteristic properties of the material, whether its hardness, its tenacity, its robustness, and so on. The deep knowledge of these distinctive traits is based on experimental results held in various load conditions, load direction, load size, and in time of loading.
The material experiment to know the properties it possesses can be done with static, dynamic, or both loads. Experiment with static load is when the load is increased regularly bit by bit. For example in tensile experiments, punter experiments, bent experiments, and compression. The experiment with dynamic load is if the load is increased rapidly and suddenly. Repeated or fatique experiments (combinations of static loads and dynamic loads), are when the load is repeatedly given and changes in direction and size of the load.
1. Mechanical properties
The mechanical property of a metal is the material's ability or behavior to hold the load imposed on it, either static, dynamic, or varying under various conditions, at high or low temperatures. Mechanical properties of the metal in the form of elasticity, strength, ductility, hardness, clay, kegetasannya, ketahanausannya, limit propagation, and compressive strength. The provisions concerning the mechanical properties relate to the duration of the load, the state of the environment, the loading frequency and the speed, the temperature conditions at the time of loading, the magnitude of the load and the strength of the compressing material.
In relation to the mechanical properties of a metal, it can be distinguished under various load conditions as follows:
a. Mechanical Properties in Pull Loading
When a metal receives a tensile load, the metal will change in shape and size due to the load imposed on it. If the change in shape and size becomes lost again after the load is released, the material is said to have elastic properties and its shape changes are called elastic deformation. If the change in shape and size persists even if the load has been removed and has an increase in the length or diminution of the cross-section, the material is plastic and the deformation is called plastic deformation.
b. Mechanical properties in Dynamic Loading
The strength of a metal in accepting the back and forth load, as well as the ability to hold it in a certain number of repetitions, is said to be resistant to fracture. The received load is called a dynamic load, while the highest alternating voltage capable of being retained by the material is called the limit of fatigue or broken voltage. In dynamic tensile loads and loads, if the fractures are fibrous, taper-shaped and sometimes bowl-shaped, it is called a clay fracture. If the fracture is nearly flat and rough crystallites are said to be spring breaks.
c.Mechanical Properties on Shock Absorption
Shock loads are generally accepted by the material when subjected to a sudden striking force or load. A material that has a fracture resistance to the shock load and at high temperatures, it is said to be ituliic or ductile material. In a loading until fracture, if it takes place at a higher temperature and the magnitude of the received force is greater, the material is said to be more tough (ductile). If the received force is smaller and with a lower temperature, it is said to be more brittle.
d. Mechanical Properties for Material Hardness
Hardness is the mechanical property of a material to change in form due to a scratch or compression. A material capable of resisting scratches from other materials and not injured, means that the material is hard. If the material is able to withstand scratches, it will be able to be used for frictional weights which means resistant to wear and can be worked with the machine.
e.Height of Mechanical to Shear and Slide Burden
Shear load is the loading that occurs in different places in different directions or in opposite directions. In such loading this material will have the possibility of bending and twisting. A material is said to have a large bent force or great punter strength, if it can withstand a large twisting force and a homogeneous (meeting) crystal structure. These bends and twists are closely related to the properties of tensile strength and hardness of the material.
Mechanical Properties of Damping
The damping properties of a material are
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Judul: METAL PROPERTIES
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Judul: METAL PROPERTIES
Rating: 100% based on 99998 ratings. 5 user reviews.
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