Visual Inspection Courses
Gross surface defects can be discovered throuogh the simple visual test. And this leads to an instant rejection of the component, saving money and time, which would otherwise be spent on various complex means of testing. This test is often necessay for examining the presence of finer defects. This test can be carried out effectively at the minimum costs. Visual test involves the illumination of the test sample with light, generally in visible location. The sample is examined properly with eye or by using light sensitive devices like photocells. For carrying out the test, the simple device is needed, but adequate illumination is necessary. Not only this, the surface of the sample must be cleaned properly before being examined.