Elastomagnetic Sensor-Based Long-Term Tension Monitoring of Prestressed Bridge Member with Temperature Compensation

Table 4

Tension prediction errors and R² before and after temperature compensation.

Category	Sensor 1				Sensor 2
	LR		ET		LR		ET
	MAE (tons)	R^2	MAE (tons)	R^2	MAE (tons)	R^2	MAE (tons)	R^2
Area	2.3285, 0.4037	−13.2643, 0.6082	2.9496, 0.5092	−21.2236, 0.4044	2.1148, 0.3296	−11.0107, 0.7252	2.6735, 0.3281	−18.3785, 0.7687
Permeability	1.6635, 0.1779	−7.2918, 0.8980	2.9293, 0.2346	−19.9320, 0.8425	1.6991, 0.1849	−7.1789, 0.9049	1.7632, 0.1888	−9.0982, 0.9125
Coercivity	8.6063, 1.2110	−182.8032, −2.6593	4.8027, 1.6453	−46.2693, −6.2060	21.3243, 3.4796	−1123.5, −34.3742	7.6549, 3.4485	−110.7544, −37.7362
Retentivity	0.9248, 0.4544	−1.0296, 0.4520	1.1091, 0.5202	−1.9763, 0.2798	1.0204, 0.3547	−1.8908, 0.7044	1.2732, 0.3705	−4.1167, 0.6772

Note. A pair of values represents before and after temperature compensation.