Location

Brunswick, ME

Start Date

1-1-1990 12:00 AM

Description

The value of having a sensor capable of monitoring the progress of carbon-carbon fabrication has been previously discussed and continues to be an attractive objective [1, 2]. Acoustic emission, when correlated with gas evolution and temperature profile, has been shown to give a strong indication of the internal stresses produced during pyrolysis and the path taken to achieve stress relief under varying process conditions. A challenging aspect of the process is the high temperature at which in situ sensors must function. Distributed physical proximity to the part under fabrication is critical to insure that the data reflects the material condition in real-time.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

9B

Chapter

Chapter 7: Engineered Materials

Section

Smart Structures

Pages

1199-1206

DOI

10.1007/978-1-4684-5772-8_153

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Degradation of Optical Fibers at Carbon-Carbon Pyrolysis Temperatures

Brunswick, ME

The value of having a sensor capable of monitoring the progress of carbon-carbon fabrication has been previously discussed and continues to be an attractive objective [1, 2]. Acoustic emission, when correlated with gas evolution and temperature profile, has been shown to give a strong indication of the internal stresses produced during pyrolysis and the path taken to achieve stress relief under varying process conditions. A challenging aspect of the process is the high temperature at which in situ sensors must function. Distributed physical proximity to the part under fabrication is critical to insure that the data reflects the material condition in real-time.