When a body is subjected to a system of forces, then there will be a change in the volume of the body due to the stress acts on the body. Bulk modulus is the measure of resistibility to the external forces acting on the body. whereas Young’s modulus is stiffness in the body, whereas Rigidity modulus or […]
Archives for April 2018
What is the effect of adding Impurities on Cast Iron?
In the previous article, we have discussed what are the different types of Cast Iron. In this article, we are going to brief about how the mechanical properties are going to change when we add some impurities on Cast Iron. Effect of Adding Impurities on Cast Iron Alloy cast iron is obtained by adding the different […]
What are the factors in Selection of Materials for Engineering Purposes?
In manufacturing process selection of materials for the design of a machine is an essential step to accomplish the reliable functionality of the machine. The selected material should satisfy both the availability as well as the function and many other factors. Those are discussed In brief. There are some factors need to be considered while selecting a […]
Classification of Materials | Engineering Material Classification
In Mechanical Engineering The material science plays a significant role. As a Design Engineer, it is necessary to understand the Classification of materials, Material Properties, and Selection of materials for engineering purpose. Selecting a suitable material base upon the condition of operation and machinability and many other factors is also a big task. Let’s get into the subject […]
What is Impact load? and Impact stress Formula?
Sometimes machine members are subjected to load with a sudden impact due to falling or hitting one object on another. The load produced due to these actions is known as the Impact load. The stress produced in the machine members due to the Impact load is known as the Impact stress. Let’s discuss this topic in a […]
Example Problems on Fundamental deviation Calculations
Fundamental deviation Calculations: The fundamental deviation is an allowance rather than tolerance. The allowance is simply the deviation between the hole minimum diameter to the shaft maximum diameter. Where the tolerance refer to either hole (Max. dia of hole-Min. Dia. of the hole) or shaft (Max. Dia. of the shaft- Min. Dia. of the Shaft). There are […]
What is Safety factor / Factor of safety ?
In the design of machine members, it is necessary to understand the Safety factor (SF). It is also known as Factor of safety (FoS). It describes that the load carrying capacity of any designed member. How much stronger the system than the expected or intended. Make sense? Let’s get into the topic thoroughly. The Safety Factor […]
What is a Bearing Stress? How a bolt can experience the Bearing failure?
When machine members fastened together with Riveted joints, cotter joints, knuckle joints etc. There will be a compressive stress produced at the surface of contact between the two machine members. This stress can be called as the Bearing Stress. Let’s see how a bolt can experience the bearing failure. Bearing stress can also be said as […]
What is Shear stress and Shear strain?
In a Machine, every component subjected to various forces. Due to these forces acting on the machine components, there are various types of stresses are induced. Where a simple stress is defined as the internal resistance force that opposes the external force per unit area. Where the Strain is defined as the deformation per unit length. […]
What is Young’s Modulus or Modulus of Elasticity?
Young’s Modulus is a mechanical property of the material where it can be called as modulus of Elasticity/Elastic Modulus. An English physician and physicist named Thomas Young described the elastic properties of materials. Young’s modulus can be defined as simply the stiffness of a solid material. When an external force acts upon a body, then the […]
What is Simple Stress and Strain definitions?
In a Machine, every component subjected to various forces. Due to these forces acting on the machine components, there are various types of stresses are induced. Where a simple stress is defined as the internal resistance force that opposes the external force per unit area. Where the Strain is defined as the deformation per unit length. […]