Accession Number : ADA499249


Title :   Non-Destructive Evaluation of Aerospace Composites


Descriptive Note : Master's Thesis


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT


Personal Author(s) : Johnson, Jeremy D.


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA499249


Report Date : MAR 2009


Pagination or Media Count : 73


Abstract : Five methods of non-destructive material evaluation (NDE) were used to inspect various forms of damage commonly found in aerospace fiberglass composites: voids, edge and sub-surface delaminations, surface burning, and cracking. The images produced by X-ray, X-ray Computed Tomography, terahertz (THz) imaging, ultrasound, and flash IR thermography were analyzed for the detection of defects. Test results and analysis of each NDE method's capabilities provide a comparison study of conventional techniques versus the emerging technology of THz imaging for the non-destructive evaluation of aerospace composite materials. A comparison guide to the five methods' damage detection effectiveness for fiberglass composites is provided by defect type.


Descriptors :   *AEROSPACE SYSTEMS , *TOMOGRAPHY , *CONTINUOUS WAVES , *NONDESTRUCTIVE TESTING , CRACKS , THESES , X RAYS , DEFECTS(MATERIALS) , COMPUTER APPLICATIONS , DELAMINATION , COMPOSITE MATERIALS , DAMAGE , THERMOGRAPHY , TEST AND EVALUATION , FIBERGLASS


Subject Categories : MEDICINE AND MEDICAL RESEARCH
      TEST FACILITIES, EQUIPMENT AND METEORS
      ASTRONAUTICS


Distribution Statement : APPROVED FOR PUBLIC RELEASE