The vibrating needle
curemeter (VNC) and its scanning and foam variants are said to be well established in quality assurance roles for monitoring and archiving the cure profile of reactive liquid systems.
Records relied on a vibrating needle
to transmit the information, CDs used a space-age laser.
Some of these utilize a single vibrating needle
that is driven by an X-Y device, using graphics software and some use multiple needles using matrix hardware and software systems.
Among Willoughby's inventions is the scanning vibrating needle
curemeter, a theological device commercialized by Rapra and now in use worldwide as a quality analysis tool for setting liquid systems.
Among his inventions was the scanning vibrating needle
curemeter, for curing liquid systems such as cast elastomers and sealants.
Two fully automated instruments for monitoring the cure of liquid polymers and flexible and rigid foams, the SVNC scanning vibrating needle
curementer, and the foam SVNC, are described in company literature.
Polyurethane applications for the vibrating needle