Location

La Jolla, CA

Start Date

1-1-1998 12:00 AM

Description

To emphasize the anisotropy induced by damage on a ceramic matrix composite subjected to a tensile solicitation at 30° from one of the fiber directions, the changes of all the stiffness tensor components are determined from wave speed measurements of obliquely incident ultrasonic bulk waves. Using the additive form of the stiffness tensor of the damaged material, the crack orientation is determined from the damage tensor, i.e., the part relative to the loss of stiffness caused by the microcracks. The search for the principal frame of this tensor from wave speed measurements allows the assessment of the microcrack orientation.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

17B

Chapter

Chapter 6: Materials Characterization

Section

Fracture and Cracks

Pages

1613-1620

DOI

10.1007/978-1-4615-5339-7_209

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Assessment of the Crack System Orientations of a Ceramic Matrix Composite Under Off-Axis Tensile Loading

La Jolla, CA

To emphasize the anisotropy induced by damage on a ceramic matrix composite subjected to a tensile solicitation at 30° from one of the fiber directions, the changes of all the stiffness tensor components are determined from wave speed measurements of obliquely incident ultrasonic bulk waves. Using the additive form of the stiffness tensor of the damaged material, the crack orientation is determined from the damage tensor, i.e., the part relative to the loss of stiffness caused by the microcracks. The search for the principal frame of this tensor from wave speed measurements allows the assessment of the microcrack orientation.