NDT Level III Personnel Qualification Certification for UT - Ultrasonic Testing Outline and Study Materials

About Ultrasonic Testing (UT) Ultrasonic testing uses the same principle as is used in naval SONAR and fish finders.  Ultra-high frequency ...

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MIG/MAG Welding - GMAW Process

Metal inert gas (MIG) welding was first patented in the USA in 1949 for welding aluminium. The arc and weld pool formed using a bare wire e...

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Oxyacetylene Process

Process features Oxyacetylene welding, commonly referred to as gas welding, is a process which relies on combustion of oxygen and acety...

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Weld defects / Imperfections

The characteristic features and principal causes of incomplete root fusion are described. General guidelines on 'best practice' are...

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Weldability of materials

Steels In arc welding, as the weld metal needs mechanical properties to match the parent metal, the welder must avoid forming defects in th...

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Welding Process V-3

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Basic Welding Terms

The following are my non-technical definitions for some basic welding terms. These are good for the home hobbyist and those just coming ...

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