Accession Number : ADA326762

Title :   Advanced Certification Methodology for Composite Structures.

Descriptive Note : Final rept.,

Corporate Author : NORTHROP CORP HAWTHORNE CA

Personal Author(s) : Kan, H. P. ; Cordero, R. ; Whitehead, R. S.

PDF Url : ADA326762

Report Date : APR 1997

Pagination or Media Count : 167

Abstract : An improved certification methodology for composite structures was developed. The methodology permits certification of bonded and concurred composite structures with the same level of confidence as bolted structures. This methodology also ensures that the threat of in service low velocity impact is adequately addressed. The methodology was demonstrated on actual composite aircraft structures to evaluate the damage tolerance capability of these structures. The F/A-18A upper wing skin was used for methodology demonstration. Sensitivity studies were conducted to determine the influence of impact damage threat scenarios and damage tolerance design requirements on the reliability of composite structures.

Descriptors :   *COMPOSITE AIRCRAFT, DAMAGE, IMPACT TESTS, COMPOSITE STRUCTURES, LOW VELOCITY, TOLERANCE, GRAPHITE EPOXY COMPOSITES, COMPOSITE WINGS, STRUCTURAL INTEGRITY.

Subject Categories : Aircraft
      Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE