American Society for Nondestructive Testing
www.asnt.org
with various technical articles at
http://www.asnt.org/publications/materialseval/materialseval.htm

British Institute of Non-Destructive Testing
www.bindt.org
with many NDT-related links

Inspection Jobs at www.InspectionJobs.com
(focus on inspection, NDT careers)

NDE 2002
Conference papers (focus on Asia) are available at www.nde2002.org - the collection contains several publications related to condition monitoring.

NDT Cabin
www.ndtcabin.com
(NDT magazine)

New Zealand Non-Destructive Testing Association (NDTA):
www.winzurf.co.nz/ndta/index.htm
(excellent overview of NDT methods and much more)

Popular on-line journal at:
www.ndt.net