Ferrologica LLC is the world leader in the field of scientific development of instruments of non destructive testing based on MMA (magnetic mechanical anisotropy of ferromagnetic metals) method.
STRESSVISION is a novel non destructive testing system that detects and classifies the level of mechanical stress in metallic structures and pressure equipment. Mechanical stress may be present due to poor design, incorrect manufacturing techniques or the presence of manufacturing or in-service produced flaws. The unique character of Stress Vision is not only in detecting serious flaws that are present in test components but also in its ability to predict locations where these types of flaws may initiate in the future.
STRESSVISION also gives a severity classification for these stress areas according to the concentration and gradients of these stresses. This allows fitness for purpose judgments to be made on components containing known flaws.
Typical
applications include:
• Determination of heat treatment effectiveness
• Detection and classification of welding flaws
• Classification of known flaws for fitness for purpose
• Detection and classification of in-service related material degradation such as hydrogen embrittlement
STRESSVISION works on the principle that the magnetic anisotropy of ferromagnetic materials changes in a predictable and measurable manner when affected by mechanical stress concentrators. Examples of mechanical stress concentrators include geometric section changes, introduced welding/manufacturing flaws, residual welding stress, in-service cracks and tears, residual plastic and thermoplastic stresses.
Unlike conventional ndt flaw-detectors, STRESSVISION provides qualitative and quantitative information about the amount of damage (current or potential) created by the stress concentrator rather than accurate information about the size and shape of the concentrator.
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