Tech Briefs Magazine - February 2023 - 41
Start-up samples are woven based on benchtop analysis and then adjusted
to ensure they comply with sensor location specifications. (Image:
Bally Ribbon Mills)
While the space habitat SHM application focuses on strain
measurement, examples of the kind of data that might be measured
include:
* Strain: Wear and tear, fatigue, aging, structural health, safety
* Temperature: Material joints, process control, safety
* Intrusion detection, process control, safety
* Vessel pressure
* Flow rate, quality (contamination, transmitted material formulation),
volumes.
For the space habitat SHM application, the long-term goal
was to be able to measure stress, strain, and temperature, and
to pinpoint the location of important events.
During this project, BRM integrated Luna fiber optic sensors
into Vectran webbing. The BRM materials served as woven optical
carriers, which are critical in applications that experience
high strain. Carriers add reinforcement to fiber optic sensors
and prevent high strain from being transferred directly to the
fiber. Sensors are woven into the carrier and then embedded
into a material. The carriers serve as component parts in the
eventual construction of assemblies that capture and transmit
information to a downstream computing technology. The
weaving technology enables the measurement and conversion
of information to knowledge and action.
The resulting benefits include the ability to take corrective action
based on improved monitoring capability; the actuation of
human/machine involvement; the transformation of connected
objects; and ultimately the fuller automation of manufacturing
processes, and the integration of non-destructive inspection tools.
Manufacturing webbing with embedded sensors brings two
main challenges. The first is ensuring the sensor is not damaged
during the weaving process. BRM had to minimize bending
radii of the sensor to prevent damage.
The second challenge is to ensure that the weave design is
precise enough to place sensor ingresses and egresses in the
proper locations within the surface of the weave structure. The
BRM team wove start-up samples based on a benchtop analysis
Tech Briefs, February 2023
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Tech Briefs Magazine - February 2023
Table of Contents for the Digital Edition of Tech Briefs Magazine - February 2023
Tech Briefs Magazine - February 2023 - Intro
Tech Briefs Magazine - February 2023 - Sponsor
Tech Briefs Magazine - February 2023 - Cov1
Tech Briefs Magazine - February 2023 - Cov2
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Tech Briefs Magazine - February 2023 - Cov3
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