Identification Method of Failure Mechanism Consistency for Electromagnetic Relay Based on Crystal Vibration Energy

doi:10.16628/j.cnki.2095-8188.2025.07.002

Abstract

Abstract:

Accelerated degradation test is often used in the reliability evaluation of switching electrical appliance.The consistency of failure mechanism under each accelerated stress is the basis for accurate and efficient evaluation of its reliability. Firstly, in view of the possible misjudgment of the failure mechanism consistency based on failure physics and the fact that the quantitative analysis method based on Arrhenius model can not describe the degradation law of progressive stress test data, a degradation model based on crystal vibration energy is proposed.The t-distribution hypothesis test and Monte Carlo simulation are both carried out to verify that the model can be used to describe the degradation law of progressive stress test data.Then, a method based on the degradation model for identifying the consistency of failure mechanism is proposed.Finally,the continuous load accelerated degradation test example of a relay shows that it is mutually verified with destructive physical analysis.The proposed method, on the basis of describing the degradation law of the progressive stress data, can be used for the quantitative analysis of the failure mechanism consistency under temperature accelerated stress and has certain effectiveness.

Key words: Arrhenius model, failure mechanism, consistency, destructive physical analysis

CLC Number:

TM52

XING Huafeng, FU Rao, LI Huiyan. Identification Method of Failure Mechanism Consistency for Electromagnetic Relay Based on Crystal Vibration Energy[J]. LOW VOLTAGE APPARATUS, 2025, 0(7): 9-17.

Figures/Tables 14

T_i/K	τ_i	$t α 2$ (r_i-2)
353	0.50	1.66
374	-0.80	1.66
397	0.52	1.66
423	-0.76	1.68

θ H ^ 0、 θ H ^ 1参数矩阵

参数	T₁~T_i/K
	353~374		353~397		353~423
	$H^0$	$H^1$	$H^0$	$H^1$	$H^0$	$H^1$
$a^$	3.15	3.17	3.55	3.83	3.28	3.62
b'	4.00×10⁷	4.00×10⁷	4.00×10⁷	4.00×10⁷	4.00×10⁷	4.00×10⁷
$p^$	2.65×10⁶	—	3.20×10⁶	—	2.76×10⁶	—
$p^1$	—	2.67×10⁶	—	3.40×10⁶	—	3.19×10⁶
$p^2$	—	2.71×10⁶	—	3.48×10⁶	—	3.26×10⁶
$p^3$	—		-	3.00×10⁶	—	3.39×10⁶
$p^4$	—		—	—	—	2.49×10⁶
$μ ε 1$	3.64×10^-4	9.54×10^-3	-7.33×10^-4	3.55×10^-3	-4.70×10^-4	-2.03×10^-2
$σ ε 1 2$	1.22×10^-3	1.24×10^-3	1.58×10^-3	1.27×10^-3	1.30×10^-3	1.18×10^-3
$μ ε 2$	-3.96×10^-4	-9.38×10^-3	-2.82×10^-3	6.17×10^-3	-2.26×10^-3	-4.20×10^-2
$σ ε 2 2$	1.16×10^-3	1.14×10^-3	3.57×10^-3	2.13×10^-3	2.41×10^-3	1.23×10^-3
$μ ε 3$	—	—	2.54×10^-3	-2.72×10^-3	4.74×10^-3	-4.05×10^-2
$σ ε 3 2$	—	—	5.30×10^-3	7.91×10^-3	6.82×10^-3	1.21×10^-2
$μ ε 4$	—	—	—	—	-9.45×10^-3	2.77×10^-1
$σ ε 4 2$	—	—	—	—	3.75×10^-3	2.92×10^-3
Λ_i	0.28		6.23		1.48
$χ β 2$ ( $ξ H^0$ - $ξ H^1$ )	6.64		9.21		11.35

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参数	T_i/K
参数	298	353	374	397	423
试验时长/h	0	3 216	2 664	2 664	2 448
退化量/mN	0.015	0.081	0.079	0.110	0.130
加速应力退化速率/ (10^-5mN·h^-1)	—	2.05	2.41	3.48	4.83