Assessing materials notch toughness: the Charpy test
The Charpy test is a dynamic test designed to measure the amount of energy that a material can absorb as it fractures. Understanding the energy absorption properties of a material is essential to predict how the material will react to impact loading, and is, therefore, a determining factor in the suitability of a designed material for a particular application.
The test can be performed at a single temperature if toughness criteria have previously been established, or it can show the ductile-to-brittle transition in absorbed energy when a series of tests are performed at several temperatures.
The ductile-to-brittle-transition temperature (DBTT) is a fundamental component of the Charpy test; at this temperature the material properties shift from ductile to brittle characteristics, causing the material to fracture easily. This means that working below the DBTT will increase the risk of unexpected brittle failures.Â
The results of a Charpy impact test can be compared with each other or with a requirement in acceptance specifications for materials used in impact situations, such as gears, bolts, and shafts. They can be used to determine notch toughness of weld or parent material to qualify various weld procedure requirements.
Learn more about the Charpy test, how it is performed, the test specimens and notch configurations by downloading the article below or contact us to speak with our experts. Â
Transportation Energy Construction Materials Testing
Find related Resources
Impact Testing
PERFORMING THE CHARPY TEST TO ASSESS MATERIALS NOTCH TOUGHNESS AND SATISFY INDUSTRY SPECIFICATIONSÂ Â
More from ÌìÃÀ´«Ã½
Charpy vs. Izod: An Impact Testing Comparison
Both Charpy and Izod impact testing are popular methods of determining impact strength, or toughness, of a material. This article examines the key differences between both methodologies.
Mechanical & Destructive Testing
ÌìÃÀ´«Ã½'s mechanical tests are part of our destructive testing services, they show whether a material or part is suitable for its intended mechanical applications.
Charpy Impact Testing Services
Find out about the complete range of Charpy impact testing services that area available from ÌìÃÀ´«Ã½s worldwide network of accredited laboratories.
Corrosion Testing
As a world leader in the provision of corrosion testing services, ÌìÃÀ´«Ã½ provides effective corrosion testing programs to help you reduce the cost of failure of your materials, and ensure that your assets are safe and will perform as expected once deployed in the field.