Accession Number:

ADA090440

Title:

Acoustic Emission as a NDE Technique for Determining Composite Rotor Blade Reliability,

Descriptive Note:

Corporate Author:

ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MA

Personal Author(s):

• Shuford,Richard J.
• Houghton,William W.

Report Date:

1980-06-01

Pagination or Media Count:

15.0

Abstract:

This paper discusses the progress made in an ongoing program to investigate the use of acoustic emission AE to determine nondestructively the structural integrity of a composite main rotor blade. The blade is constructed primarily of S glassepoxy and aramidepoxy. The blade structure is composed of a multiple-cell filament-wound spar, an aramid trailing edge and a filament-wound blade skin supported by an aramid fiber paper honeycomb core. The design and manufacture of these blades have been presented elsewhere. A total of four blades are being tested, two blades with known areas of delamination and two blades without these defects. Author, modified-PL.

Descriptors:

• *NONDESTRUCTIVE TESTING
• *COMPOSITE MATERIALS
• *RELIABILITY
• *ACOUSTIC EMISSIONS
• *ROTOR BLADES
• FILAMENT WOUND CONSTRUCTION
• ENVIRONMENTS
• LOW COSTS
• STRUCTURAL ANALYSIS
• FABRICATION
• GLASS
• AERODYNAMIC CHARACTERISTICS
• EPOXY COMPOUNDS

Subject Categories:

• Aircraft
• Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE