What is the purpose of edge lighting in MPT?

Prepare for the Magnetic Particle Testing Method Level 3 Exam. Study with flashcards, multiple choice questions, hints, and explanations. Ensure you are exam-ready with comprehensive preparation materials and tips for success!

Edge lighting in Magnetic Particle Testing (MPT) serves a critical function by improving the visibility of surface indications during the inspection process. The principle behind edge lighting involves illuminating the test surface in a manner that highlights any discontinuities, such as cracks or inclusions, that may be present. When the magnetic particles are applied to the surface after magnetization, edge lighting can help create a contrast between the particles and the background, making it easier for the inspector to identify flaws.

Visibility is significantly enhanced because the lighting accentuates the contours and edges of any defects, allowing them to stand out against the surface. This is particularly important in non-destructive testing, where the primary aim is to ensure the integrity of the material being examined without causing any damage. By focusing on improving visibility, edge lighting contributes directly to the accuracy and reliability of the inspection process.

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