Accession Number:

AD0918497

Title:

Design Data for Composite Structure Safelife Prediction. Volume II. Test Data.

Descriptive Note:

Final rept. May 71-Aug 73,

Corporate Author:

BOEING VERTOL CO PHILADELPHIA PA

Personal Author(s):

• Durchlaub,Erwin C.
• Freeman,Richard B.

Report Date:

1974-03-01

Pagination or Media Count:

669.0

Abstract:

This volume contains information on test procedures and methods used to generate empirical data for the 09045 family of boron-epoxy composites which would be suitable for utilization in the design and design comparison of damage tolerant structures and all the data re-sulting from these tests. The testing of boron-epoxy laminates in-cluded tension and compression, and static and fatigue, for various laminates of the 0plus or minus 4590 family, notched and unnotched, at room temperature. The basic notch geometry was a circular center notch with a sharp slit notch as a secondary configuration. Additional notches such as symmetrical edge notches, impact notches, partial through notches and ballistic projectile notches were also part of the test program. Photographs of failure modes, summary charts of static notch sensitivity, and fatigue S-N CURVES ARE PRESENTED. Author, modified-PL

Descriptors:

• *AIRFRAMES
• *BORON
• *LAMINATES
• SYNTHETIC FIBERS
• COMPOSITE MATERIALS
• AIRFRAMES
• AIRCRAFT
• EXPERIMENTAL DATA
• NOTCH SENSITIVITY
• STRENGTH(GENERAL)
• RESIDUALS
• BEAMS(STRUCTURAL)
• STATIC TESTS
• TEST METHODS
• TENSION
• COMPRESSION
• PHOTOGRAPHIC ANALYSIS
• LIFE EXPECTANCY(SERVICE LIFE)
• PREDICTIONS

Subject Categories:

• Aircraft
• Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE