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Lambient Technologies, based in Cambridge, MA, USA, designs and produces instruments for real-time analysis of the curing of thermosets and advanced composite materials such as those used in...
Dielectric cure monitoring (DEA) allows for the measurement of cure in real-time. This allows for detailed analysis of materials such as H.B. Fuller U3345, a UV-cured adhesive.
Sponsored by Lambient TechnologiesMay 28 2021 Both AC and DC techniques can be utilized to analyze thermoset and composite cure. AC dielectric cure monitoring, also known as Dielectric Analysis (DEA) agitates a sensor with a sinusoidal signal of a particular frequency and amplitude, applying a DC bias of zero volts. The measured frequency independent resistance, or ion viscosity, corresponds to the cure state of the Material Under Test (MUT). Similarly, DC resistance cure monitoring probes a material but alternatively uses a excitation voltage V DC that remains constant. AC and DC signals....
(top and bottom left) using disposable sensors (top right) and in-mold sensors that can be used with vacuum bag and release films (bottom right). Photo Credit for all images: Lambient Technologies LLC I have written about cure monitoring via AvPro’s (Normal, Okla., U.S.) ThermoPulse microwire sensors, which it aims to use in its cure management systems and also about Synthesites’ (Uccle, Belgium) direct current (DC) dielectric sensors for in-situ monitoring and real-time Tg evaluation. In this blog, I will discuss Lambient Technologies (Cambridge, Mass., U.S.) and their history in al...
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