Accession Number : ADA310040

Title :   Compression and Compression Fatigue Testing of Composite Laminates.

Descriptive Note : Final rept. 1 Jun 81-31 Aug 82,

Corporate Author : BOEING MILITARY AIRPLANE CO SEATTLE WA

Personal Author(s) : Porter, T. R.

PDF Url : ADA310040

Report Date : 31 AUG 1982

Pagination or Media Count : 124

Abstract : This report presents the results of a program with the objective to experimentally investigate the effects of moisture and temperature on the fatigue and fracture response of composite laminates under compression loads. The structural laminates investigated were a typical angle ply laminate and a typical turbine-engine fan blade laminate. Defects investigated were: full- and half-penetration slits and impact delaminations. Results are presented showing the effects of moisture on the fracture and fatigue strength at room temperature 394K (250 deg F) and 422K (300 deg F). Static test results are presented that show the effects of defect size and type on the compression-fracture strength under moisture and thermal environments. The cyclic test results compare the fatigue lives and residual-compression strength under compression only and under tension-compression fatigue loading.

Descriptors :   *FIBER REINFORCED COMPOSITES, *FATIGUE(MECHANICS), *EPOXY RESINS, *GRAPHITE EPOXY COMPOSITES, COMPRESSION, COMPOSITE MATERIALS, LAMINATES, IMPACT TESTS, GRAPHITE, FAN BLADES, MOISTURE CONTENT, STRENGTH(MECHANICS), FRACTURE(MECHANICS), IMPACT STRENGTH, DEFECTS(MATERIALS), AEROSPACE CRAFT, TURBINES, DELAMINATION, FATIGUE TESTS(MECHANICS), COMPRESSIVE PROPERTIES, CYCLIC TESTS.

Subject Categories : Laminates and Composite Materials
      Plastics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE