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Non-destructive testing with micro and MM waves - Where we are and where we go

: Dobmann, Gerd; Altpeter, Iris; Sklarczyk, Christoph; Pinchuk, Roman

Preprint urn:nbn:de:0011-n-1972116 (845 KByte PDF)
MD5 Fingerprint: 3c35d8e8cf4af1002dce10443c33867c
Created on: 5.5.2012

Welding in the world 56 (2012), No.1/2, pp.111-120
ISSN: 0043-2288
Journal Article, Electronic Publication
Fraunhofer IZFP ()
imaging; microwaves; nondestructive testing; quality assurance

Testing methods based on microwaves are well suited to characterize mainly electrically nonconducting materials and to detect and image defects in non-destructive and in many cases in contactless way. While in the past the often complicated and expensive microwave equipment prevented the widespread application of microwave methods this situation is now changing due to the increasing availability of low-cost high integrated microwave components. Microwave testing has found an important application in the field of security, e.g. to detect and image dangerous objects hidden under clothes. The principles of this technique can be applied in the domain of joining (e.g. welding of plastics or gluing plastic to plastic) for contactless detection of defects under cover layers.