1.1 – BEND TEST
The purpose of the bend test is to evaluate the ductility and/or absence of imperfections on the surface or near the surface of the specimen. This test is applied on metallic materials and welded joints.
1.2 – SHOCK BENDING TESTS
The Charpy resilience is a pendulum that is used in tests to determine the toughness of a material. By using specimens of standardized dimensions with a V-shaped notch, this test also determines the ductile-brittle transition temperature.
The test is performed at laboratory temperature (23 +/- 5ºC), and CHARPY tests can be performed at temperatures of -196ºC.
1.3 – TENSILE TESTS
The test consists of subjecting a specimen to a tensile stress with a constant speed determined by the surface, following the criteria of the standard to be applied, until breakage to determine the following characteristics:
– Tensile strength
– Elastic limit
This test is carried out for metallic materials without welded joints, in specimens with welded joints and in tubes.
1.4 – HARDNESS TEST
This test is applied to metallic materials and arc welded joints. The main types of hardness are: Rockwell, Brinell and Vickers, which differ from each other by the type of indenter and by the way the load is applied.
The methods for measuring hardness consist of indenting a sample of the product to be tested by applying a given load on an indenter and then measuring a geometric characteristic of the indentation.