General reasons for defects, Mechanical Engineering

Assignment Help:

GENERAL REASONS FOR DEFECTS


The importance of weld quality is increasingly felt as we go ahead with the fabrication of sophisticated products using higher strength materials combined with critical design consideration. However, defects are likely to be present in materials produced at economic cost. Defects are generally introduced because of:

  • Lack of know how & know why as well as experience.
  • Welding process characteristics.
  • Base metal composition.
  • Defective welding filler metals.
  • Joint design.
  • Welding environment (wind, fit up, temperature, etc.)

Related Discussions:- General reasons for defects

Write the types and functions of column, Write the types and functions of c...

Write the types and functions of column. a) Explain surveying. Brie?y describe about the chain and accessories

The classical job shop scheduling problem (jsp), The Classical Job Shop Sch...

The Classical Job Shop Scheduling Problem (Jsp) A  job  shop  scheduling  problem  occupies  the  determination  of  beginning  time  for  all operations in a finite and specif

Cooling system, Cooling System: A cooling system is designed to remove a p...

Cooling System: A cooling system is designed to remove a part of heat generated inside the cylinder that may be harmful to engine parts. The heat is produced in the engine cylinde

Determine the average time in the queue, A machine machines parts in exactl...

A machine machines parts in exactly 1.5 minutes. The machine requires tool change according to an exponential distribution with a mean of 12 minutes between occurrences. The tool c

Planning a new airport, Planning A New Airport: Elements of Airport...

Planning A New Airport: Elements of Airport Planning The elements of planning for a new airport are : (a)        Demand Forecast (b)       Site Selection (c)

What is expansion joints, Q. What is Expansion Joints? Expansion joints...

Q. What is Expansion Joints? Expansion joints are used to accommodate thermal growth in piping and pressure vessel applications. The metal bellows, an integral part of an expan

Neutral layer and neutral axis, Neutra l Layer and Neutral Axis In the...

Neutra l Layer and Neutral Axis In the beam or cantilever, there is one layer which retains the original length of it even after bending. So in this layer tensile stress and c

Steam turbine, calculation of stage wise specific steam consumption and pow...

calculation of stage wise specific steam consumption and power output

Acceleration of the two blocks, In the drawing, the weight of the block on ...

In the drawing, the weight of the block on the table is 380 N and that of the hanging block is 215 N. Ignore all frictional effects, and assuming the pulley to be massless.

Determine maximum stress and modulus of elasticity, Determine maximum stres...

Determine maximum stress and modulus of elasticity:  A composite of glass fibres and epoxy has all of fibres laid along the length and is needed to carry a stress of 12 MPa. T

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd