Table 1 Variations in resonant frequency of the sensing and reference SRR with varying humidity, temperature, and UV exposure

From: Non-destructive erosive wear monitoring of multi-layer coatings using AI-enabled differential split ring resonator based system

Parameter

fr Variation (MHz)

Δfr before exposure (GHz)

Δfr after exposure (GHz)

Change in Δfr (MHz)

Sensing SRR

Reference SRR

Humidity

(0 to 80% RH)

0.2

0

1.6568

1.6566

0.2

Hot temperature

(20 to 55 °C)

15

13.5

1.6565

1.6550

1.5

Cold Temperature

(20 °C to −20 °C)

39

34.5

1.6050

1.6095

4.5

UV exposure

(exposed/not)

11

0.5

1.7405

1.7480

10.5

  1. For the humidity and hot temperature tests, the WRC was a 3M polyurethane tape. For the cold temperature and UV tests, the WRC was ultra-high molecular weight polyethylene.
Back to article page