Main factors to be considered when selecting material, Mechanical Engineering

Main Factors to be Considered when Selecting Material

The main factors to be considered when selecting a material to meet some specific requirement are:

  • Fitness of use,
  • Formability,
  • Availability, and
  • Cost.

 

To assess the fitness of use, it is necessary to analyze the component function and determine the minimum property requirements (strength, toughness, etc.) required of a material. For any particular application, not all properties are of equal importance, for example creep resistance is of extreme importance for gas turbine disc and blade materials but of no consequence for, say, the transmission shaft of a small car, whereas fatigue resistance would be of equal importance in both cases.

Formability is an important characteristic, as this will affect the production methods to be used and costs of manufacture.

It may seem a fairly obvious point but before selecting a material it is necessary to know whether the chosen material is readily available in the quantities required.

Cost is of vital importance, as the final article must be produced at an acceptable cost if it is to be marketable. The fina1 cost will be based on both the material cost and the costs of processing.

Posted Date: 12/24/2012 5:10:41 AM | Location : United States







Related Discussions:- Main factors to be considered when selecting material, Assignment Help, Ask Question on Main factors to be considered when selecting material, Get Answer, Expert's Help, Main factors to be considered when selecting material Discussions

Write discussion on Main factors to be considered when selecting material
Your posts are moderated
Related Questions
derivation of elongation of bar due to its self weight

Determine the maximum permissible eccentricity of the load: A small hollow cylindrical column carries a compressive force of 400 kN. The external diameter of the column is 200

which material is used in production of solid revits

General Construction Procedure Well foundations may be constructed in slipways on barges, or on sand islands. The ones constructed in slipways are launched and towed to their

crowning of pulley

A Small connecting rod 220mm long between the centres has a mass of 2kg and mass moment of inertia of 0.02 kg- m² about its centre of gravity. The centre of gravity is located at a

What are the conditions where combined footings used? Two conditions in which it is used are as: a. When an exterior column is immediately adjacent to a property or mechanic

In case of welded vessels why is stress relieving in the form of post-weld treatment necessary? When a metal is welded together the point at which two surfaces are joined are s

State Hook's law: Sol.: It states that when material is loaded within the elastic limit, the stress is proportional to strain produced by the stress. This means that the rat

Explain Zeroth law and 1 st law of thermodynamics. Describe Internal energy and Enthalpy. What is a PMMFK. Give the expression for reversible workdone in a thermodynamic system