Destructive and Non Destructive Testing
Destructive and Non-destructive
Testing for Maintenance Applications
Why use testing? * Make best use of limited budgets
• Repair vs. replace
• Increase load limits * Preserve our infrastructure
• Economics
• Historic structures * Make sound judgments to repair or replace * Increase level of confidence / decrease uncertainty * Increase overall safety
Destructive Testing
Destructive testing (DT) includes methods where your material is broken down in order to determine mechanical properties, such as strength, toughness and hardness. In practice it means, for example, finding out if the quality of a weld is good enough to withstand extreme pressure or to verify the properties of a material. Destructive testing is most suitable, and economic, for objects which will be mass produced, as the cost of destroying a small number of specimens is negligible. It is usually not economical to do destructive testing where only one or very few items are to be produced (for example, in the case of a building).
These properties can’t be examined with non-destructive methods, as specimens of the material must be extracted. Destructive testing is generally most suitable and economic for mass produced objects, as the cost of destroying a small number of pieces is negligible. The samples are put under different loads and stress. That way we can analyze in which point your material eventually gives up and cracks. The results gained are then compared to regulations and/or quality guidelines.
Destructive tests are best when used together with our non-destructive methods: this combination gives the best information on materials and welds. Non-destructive tests show if cracks, corrosion or other faults exist. Destructive tests in turn indicate how and when the objects are in danger of breaking down or failing.
Benefits of Destructive Testing (DT) * Verifies properties of a material * Determines quality of welds * Helps you to reduce
Testing for Maintenance Applications
Why use testing? * Make best use of limited budgets
• Repair vs. replace
• Increase load limits * Preserve our infrastructure
• Economics
• Historic structures * Make sound judgments to repair or replace * Increase level of confidence / decrease uncertainty * Increase overall safety
Destructive Testing
Destructive testing (DT) includes methods where your material is broken down in order to determine mechanical properties, such as strength, toughness and hardness. In practice it means, for example, finding out if the quality of a weld is good enough to withstand extreme pressure or to verify the properties of a material. Destructive testing is most suitable, and economic, for objects which will be mass produced, as the cost of destroying a small number of specimens is negligible. It is usually not economical to do destructive testing where only one or very few items are to be produced (for example, in the case of a building).
These properties can’t be examined with non-destructive methods, as specimens of the material must be extracted. Destructive testing is generally most suitable and economic for mass produced objects, as the cost of destroying a small number of pieces is negligible. The samples are put under different loads and stress. That way we can analyze in which point your material eventually gives up and cracks. The results gained are then compared to regulations and/or quality guidelines.
Destructive tests are best when used together with our non-destructive methods: this combination gives the best information on materials and welds. Non-destructive tests show if cracks, corrosion or other faults exist. Destructive tests in turn indicate how and when the objects are in danger of breaking down or failing.
Benefits of Destructive Testing (DT) * Verifies properties of a material * Determines quality of welds * Helps you to reduce
References: http://www.ndt-ed.org/AboutNDT/aboutndt.htm http://en.wikipedia.org/ klevens_alan.pdf http://www.aboutcivil.org/tests-on-concrete.html http://geo.uk.com/site-services/concrete-sampling