Accession Number : ADA112703

Title :   Infrared Detection of Faulty Solder Joints. Phase 2.2.

Descriptive Note : Program rept.,

Corporate Author : VANZETTI SYSTEMS INC STOUGHTON MA

Personal Author(s) : Traub,Alan C

PDF Url : ADA112703

Report Date : 01 Mar 1982

Pagination or Media Count : 190

Abstract : An experimental model of a laser/thermal testing system for solder joints has been evaluated during tests on 1,074 joints. Certain types of defect in through-hole and lap joints are revealed by this method, which seeks out variations in surface quality and in thermal mass. The possibility of accidental laser-beam damage to substrates was also investigated. A means of reducing this possibility was conceived and implemented. The feasibility of testing solder joints covered by a conformal coating was confirmed. Several improvements in the system design concept were effected during the course of the work. (Author)

Descriptors :   *Nondestructive testing, *Laser beams, *infrared detection, *Soldered joints, Test and evaluation, Coatings, Surfaces, Conformal structures, Test methods, Thermal properties, Quality, Damage, Substrates, Defects(Materials), Models, Experimental data

Subject Categories : Lasers and Masers
      Printing and Graphic Arts
      Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE