Location

La Jolla, CA

Start Date

1-1-1991 12:00 AM

Description

Structurally integrated fiber optic sensors hold the promise of improved quality control of composites and “real-time, in-service” monitoring of the loads to which they are subjected and any damage they may sustain. This could reduce overdesign and increase confidence in their use by improving both safety and their economics especially in terms of inspection and maintenance, Figure 1. This would be particularly relevant to the Aerospace Industry where any weight saving has a multiplier effect. The technology of imbedding arrays of optical fiber sensors within advanced composite material structures during their fabrication essentially provides materials with “optical nerves”. Improved quality control would be achieved by monitoring the internal of composites during their manufacture. Also since “in-service” monitoring of structural loads and structural integrity would permit weaknesses to be indicated before they became critical, longer periods could be allowed between costly inspections. When the system is taken out of service for such an inspection, a shorter downtime might be expected since the built-in sensors would have already indicated sites of weakness and their rate of deterioration. A recent overview of fiber optic based “Smart Structures” has been prepared by the author[1].

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

10B

Chapter

Chapter 6: Engineered Materials

Section

Smart Structures

Pages

1247-1258

DOI

10.1007/978-1-4615-3742-7_15

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

The Detection of Damage and the Measurement of Strain within Composites by Means of Embedded Optical Fiber Sensors

La Jolla, CA

Structurally integrated fiber optic sensors hold the promise of improved quality control of composites and “real-time, in-service” monitoring of the loads to which they are subjected and any damage they may sustain. This could reduce overdesign and increase confidence in their use by improving both safety and their economics especially in terms of inspection and maintenance, Figure 1. This would be particularly relevant to the Aerospace Industry where any weight saving has a multiplier effect. The technology of imbedding arrays of optical fiber sensors within advanced composite material structures during their fabrication essentially provides materials with “optical nerves”. Improved quality control would be achieved by monitoring the internal of composites during their manufacture. Also since “in-service” monitoring of structural loads and structural integrity would permit weaknesses to be indicated before they became critical, longer periods could be allowed between costly inspections. When the system is taken out of service for such an inspection, a shorter downtime might be expected since the built-in sensors would have already indicated sites of weakness and their rate of deterioration. A recent overview of fiber optic based “Smart Structures” has been prepared by the author[1].