Location

Brunswick, ME

Start Date

1-1-1992 12:00 AM

Description

itanium metal matrix composite (TMC) materials are fabricated by consolidating alternate layers of suitable titanium foils and silicon carbide fibers. The foils are generally 0.005-0.010 in thick and the fibers have diameters ranging from 0.004 in. to 0.0055 in. Furthermore, the fibers have a core of one material and an outer annular ring of silicon carbide (Fig. 1). The fibers used in the work described here, designated SCS6 fibers, have an outer diameter of 0.0055 in. and an inner carbon core with a diameter of 0.0013 in. During consolidation, the matrix material is heated under pressure so that it flows around the fibers, forming a strong interfacial bond with the fiber and a strong diffusion bond where the adjacent foils come in contact. Several types of defects can occur during the consolidation process. There can be lack of bonding or incomplete bonding between the adjacent foils or between the matrix and the fibers. It is also possible that an undesirable reaction can occur between the fiber and the matrix, producing a brittle zone that will degrade the strength of the material.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

11A

Chapter

Chapter 1: Fundamentals of Standard Techniques

Section

Elastic Wave Scattering

Pages

105-111

DOI

10.1007/978-1-4615-3344-3_13

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Calculated and Measured Ultrasonic Response of an Elastic Cylinder Embedded in an Elastic Medium

Brunswick, ME

itanium metal matrix composite (TMC) materials are fabricated by consolidating alternate layers of suitable titanium foils and silicon carbide fibers. The foils are generally 0.005-0.010 in thick and the fibers have diameters ranging from 0.004 in. to 0.0055 in. Furthermore, the fibers have a core of one material and an outer annular ring of silicon carbide (Fig. 1). The fibers used in the work described here, designated SCS6 fibers, have an outer diameter of 0.0055 in. and an inner carbon core with a diameter of 0.0013 in. During consolidation, the matrix material is heated under pressure so that it flows around the fibers, forming a strong interfacial bond with the fiber and a strong diffusion bond where the adjacent foils come in contact. Several types of defects can occur during the consolidation process. There can be lack of bonding or incomplete bonding between the adjacent foils or between the matrix and the fibers. It is also possible that an undesirable reaction can occur between the fiber and the matrix, producing a brittle zone that will degrade the strength of the material.