Feb 26, 2016

Feb 26, 2016

Feb 26, 2016

- Aug 30, 2017

## Determination of Strain in a Steel Bar

Prepare a test specimen of at least 2ft. Measure at least 3 places dia of steel bar by a VC and calculate the average value. Mark the gauge length i.e 2 marks 8” apart.
- Aug 25, 2017

## True Stress & True Strain | Engineering Stress - Strain

The true stress (ø) uses the instantaneous or actual area of the specimen at any given point, as opposed to the original area used in the engineering values. The true strain (e) is defined as the instantaneous elongation per unit length of the specimen. The relationship between true stress and true strain i.e. the flow curve can be expressed using the power law:
- Aug 23, 2017

## Torsion Test on Mild Steel and Cast Iron - Lab Report

To study the shear stress ~ shear strain behavior of the material. To study the failure pattern of these materials in torsion. To determine the mechanical properties, e.g, Modulus of elasticity, Modulus of rigidity, Shear strength, shear strain and ductility in torsion.
- Aug 23, 2017

## Universal Testing Machine and Components of UTM

A machine used to test specimens for tensile strength, compressive strength, shear strength and to perform bend test along other important laboratory tests. The primary use of the testing machine is to create the stress strain diagram. Once the diagram is generated, a pencil and straight edge or computer algorithm can be used to calculate yield strength,
- Jul 29, 2017

## Tensile Strength or Tension Test

Tensile strength of a material is the tension stress at which a material breaks or permanently deforms (changes shape) Toughness, Resilience, Poisson's ratio can also be found by the use of this testing technique. This data is plotted as load vs elongation and then converted to engineering stress (load/original area) vs engineering strain (fractional change in length over
- Jul 20, 2017

## Strain Hardening | Definition, Effects and Ductility

In the plastic region, the true stress increases continuously i.e when a metal is strained beyond the yield point, more and more stress is required to produce additional plastic deformation and the metal seems to have become more stronger and more difficult to deform. This implies that the metal is becoming stronger as the strain increases. Hence, it is called "Strain
- Jul 13, 2017

## To Find out the Reaction of Simply Supported Beam

Condition of equilibrium for vertical parallel forces acting on a body is Sum of all the force s should be zero. It should satisfy the principle of moments . If we take moment about a point on moments should be equal to anti clockwise moments.
- Jul 08, 2017

## Residual Stresses - Definition, Properties and Effects

They have more surface exposure per unit volume, the flange tips tend to cool faster than flange-to-web junctures. Tension members response to load is much similar to that of tensile-test coupon . Member behavior may differ from coupon behavior because of: Residual stresses result principally from non-uniform cooling of hot rolled or welded shapes and
- Jun 17, 2017

## Basics and Principles of Plastic Analysis

Plastic analysis is defined as the analysis in which the criterion for the design of structures is the ultimate load. We can define it as the analysis inelastic material is studied beyond the elastic limit (which can be observed in stress strain diagram). Plastic analysis derives from a simple mode failure in which plastic hinges form. Actually the ultimate load is found from the
- Jun 07, 2017

## Mohr's circle & Principle Stresses

It is a useful graphical technique for finding principal stresses and strains in materials. Mohr’s circle also tells you the principal angles (orientations) of the principal stresses without your having to plug an angle into stress transformation equations.
- May 20, 2017

## Mechanics of Solids Lecture Notes

It is the combination of physical, mathematical, and computer laws and techniques to predict the behavior of solid materials that are subjected to mechanical or thermal loadings. It is the branch of mechanics that deals with the behavior of solid matter under external actions. The external actions may be: External Force Temperature Change Displacement
- May 08, 2017

## Laboratory Investigation of Hooke’s Law

Prepare the test specimen that is steel bar and find its diameter at tree different places and find its man value. Mark two points 8" a part of 2 ft long steel bar. Insert the bar in jaws for gripping the steel bar and select suitable bar on UTM. Place the steel bar and fix it.
- May 02, 2017

## Determination of Deflection in Over Hanging Beams

Take the beam model and place it on the table. it should be kept horizontally and firmly. Determine the length of the beam and also dimension of cross section.
- May 02, 2017

## Determination of Bending Moment in Beam

Take a beam model and place it on a table in such away that it should be horizontal and firm. Record the length and cross section. Set the deflection gauge at a point where the deflection is to be measured.
- Apr 16, 2017

## To Determine Yield & Tensile Strength of a Steel Bar

Loading Unit, control unit. In addition to these units, there are certain accessories like bending table, jaws for gripping recorders etc. Loading unit consists of two crossheads i.e upper cross head and lower cross head and a table