Infrared is an inspection technique that is based on how the infrared energy transmits through a material. Since air space type defects do not transmit the infrared energy as well as continuous material, this technique is sometimes used to inspect for voids and delaminations. Although this technique can produce a picture very quickly, it is highly limited by the materials under inspection and the details achievable. AMI, on the other hand, takes a little longer to generate an image but the practical result is that the images are of much higher detail. Plus AMI is not limited by the materials under inspection.
