Welding Defects

Welding Defects

Introduction

Common weld defects include:

• i. Lack of fusion
• ii. Lack of penetration or excess penetration
• iii. Porosity
• iv. Inclusions
• v. Cracking
• vi. Undercut
• vii. Lamellar tearing

Any of these defects are potentially disastorous as they can all give rise to high stress intensities which may result in sudden unexpected failure below the design load or in the case of cyclic loading, failure after fewer load cycles than predicted.

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