Accession Number:

AD0857310

Title:

A Capacitive Measurement System for the Nondestructive Testing of Fiber Glass Reinforced Plastic Laminates

Descriptive Note:

Technical rept.

Corporate Author:

STANFORD UNIV CA DEPT OF AERONAUTICS AND ASTRONAUTICS

Personal Author(s):

• Smith, Strether

Report Date:

1969-01-01

Pagination or Media Count:

33.0

Abstract:

The feasibility of utilizing capacitive measurements for the nondestructive testing of epoxy fiber glass composites is discussed. A simple theory is derived from parallel plate capacitor theory, and the results are proven by experiment. It is shown that capacitive measurements can be used to accurately determine the thickness and resin-glass ratio with an essentially one-sided test.

Descriptors:

• *LAMINATED PLASTICS
• *REINFORCING MATERIALS
• COMPOSITE MATERIALS
• ELECTRICAL IMPEDANCE
• EPOXY RESINS
• GLASS TEXTILES
• NONDESTRUCTIVE TESTING
• REINFORCED PLASTICS
• THICKNESS

Subject Categories:

• Laminates and Composite Materials
• Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE