## Heat transfer by natural convection| Nusselt number formula and its significance

The physical mechanism of heat transfer by natural convection As we know, the hot object laying on a plate ultimately cools by the surrounding air …

## What is ultrasonic testing in NDT and welding| Ultrasonic transducer principle| Application, advantages and limitation of ultrasonic testing

Ultrasonic testing The ultrasonic testing is non-destructive testing, which means we are not going to harm our materials or we are not going to destroy …

## Heat transfer by convection | Convective heat transfer coefficient | Boundary layer and boundary layer thickness

Heat transfer by convection and mechanism of convection heat transfer Convection is a mode of heat or energy transfer between the surface of solid and …

## How heat transfer by conduction | Units of thermal conductivity | Thermal conductivity for metals | Thermal resistance unit

How Heat Transfer By Conduction? In this article, we will learn about the heat transfer mechanism in conduction, how heat transfer takes place by conduction, …

## Heat transfer of radiation | What is radiation in heat transfer

Heat Transfer Of Radiation – What Is Radiation In Heat Transfer Radiation is a transfer of heat energy between two bodies at a different temperature …

## 📈Properties of material on stress strain diagram📊

Properties of material on a stress-strain diagram There are some properties of the material that we can understand from the stress vs. strain diagram and …

## 📊Stress Strain Diagram📈(proportional limit, Elastic limit, Yield point, Ultimate point, Fracture point)

Stress-Strain Diagram (proportional limit, Elastic limit, Yield point, Ultimate point, Fracture point) We surrounded by mostly two types of material (1) Ductile material (2) Brittle …

## Relations between elastic constants(Modulus of elasticity, Bulk modulus, Modulus of rigidity, Poisson’s ratio)

Poisson’s ratio Relations between elastic constants(Modulus of elasticity, Bulk modulus, Modulus of rigidity, Poisson’s ratio) There is 4 elastic constant for isotropic materials. Modulus of …

## Types Of Welding Position| Flat welding| Horizontal welding | Vertical welding |Overhead welding |1G 2G 3G 4G weld position |5G 6G welding position

Types Of Welding Position In welding technology, there are some types of welding positions that have designation or coding according to the type of weld …