What is the Face Bend Test in Welding?

The face bend test is a welding quality assurance test in which the weld face is on the convex surface of a specified bend radius. This test is performed to ensure that the welding operation has produced a sound, defect-free weld.

What is the purpose of a bend test?

The purpose of a bend test is to determine the ability of a material to withstand deformation under load. The test may be performed on metals, plastics, or composites. The face bend test is often used in welding quality assurance testing because it can reveal defects that are not apparent in other weld tests.

How do you pass the bend test?

In order to pass the bend test, the welded joint must not crack or break when subjected to the specified load. The weld should also exhibit good fusion and penetration.

What is the difference between a face bend test and a root bend test?

The face bend test is performed on the convex surface of a bend radius, while the root bend test is performed on the concave surface. The face bend test is typically used to assess the quality of a weld, while the root bend test is used to determine the strength of the weld.

Types of bend test in welding

There are two main types of bend test in welding:

  1. the face bend test,
  2. the root bend test.

Related Links

Bend Testing – TWI
Types of Weld Guided Bend Test | Welpedia
CSWIP 3.1: Question with Answer and Explanation ? Part 3 ? Shipbuilding knowledge
Lesson 10 – Reliability of Welding Filler Metals
Guided-bend-test – Metal Fabricating Glossary

Related Videos