The line of pores in the welded seam.
The line of pores in the welded seam occurs because of low current, high weld speed and irregular gas feed or high humidity. The line of pores is a minor defect...
Category: To become an Inspection Engineer
Fracture toughness criteria.
For a crack in a metal to expand under the influence of the stretching forces, it is necessary to spend some work on the plastic deformation’ flowing alon...
Certification of welders (Part 1).
Certification results of welding technology obtain practical value only after certification of individual welders for executing welding works in compliance with...
Tensile tests (PART 6).
When conducting tensile tests the beginning of yield point is marked with decreasing of apparatus values or recording device. Yield point can be determined by o...
Methods for materials properties evaluation at the stage of cracks origination and development.
Earlier it was considered, that both in basic material and in welded joint cracks existence is not acceptable, and their origination during product service sign...