Non-destructive testing (NDT) is a branch of engineering that detects and evaluates flaws in materials. NDTnet is a monthly online journal that offers news and information about NDT technology and ultrasonics. Research papers and conference proceedings are often included as well, complete with abstracts. This is the Web site of the August, 2002 issue, which has "selected papers of the 3rd International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurized Components." NDTnet is a free publication, and several years of back issues are also available.