Preliminary evaluation of hybrid titanium composite laminates

Technical Report · Fri Apr 01 04:00:00 EST 1994

OSTI ID:7107909

Miller, J L; Progar, D J; Johnson, W S; Clair, T L

In this study, the mechanical response of hybrid titanium composite laminates (HTCL) was evaluated at room and elevated temperatures. Also, the use of an elastic-plastic laminate analysis program for predicting the tensile response from constituent properties was verified. The improvement in mechanical properties achieved by the laminates was assessed by comparing the results of static strength and constant amplitude fatigue tests to those for monolithic titanium sheet. Two HTCL were fabricated with different fiber volume fractions, resin layer thicknesses, and resins. One panel was thicker and was more poorly bonded in comparison to other. Consequently, the former had a lower tensile strength, while fewer cracks grew in this panel and at a slower rate. Both panels showed an improvement in fatigue life of almost two orders of magnitude. The model predictions were also in good agreement with the experimental results for both HTCL panels.

• Research Organization: National Aeronautics and Space Administration, Hampton, VA (United States). Langley Research Center
• OSTI ID: 7107909
• Report Number(s): N-94-29472; NASA-TM--109095; NAS--1.15:109095; CNN: RTOP 505-63-50-04
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ELEMENTS
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
METALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RESINS
TENSILE PROPERTIES
TITANIUM
TRANSITION ELEMENTS