含损伤吸波蜂窝结构力电性能修复与综合评价

doi:10.7527/S1000-6893.2025.32370

Abstract

Abstract:

Microwave-absorbing honeycomb is a commonly used Electromagnetic （EM） wave absorbing material of advanced aircraft， but damage during service will lead to degradation in both EM wave absorbing and mechanical performance. The vertical reflectivity and in-plane compression properties of repaired microwave-Absorbing Honeycomb Sandwich （AHS） were studied by simulation and experiments， and a new evaluation index for the EM repairability of damaged AHS， defined as the maximum difference between the repaired and undamaged structure， is proposed in this paper. The effects of bonded repair technology on the mechanical and EM repairability of AHS are analyzed， and a comprehensive evaluation on mechanical and EM repairability is made based on the fuzzy comprehensive evaluation method. The results show that both patch and scarf repair will lead to an increase of structural reflectivity and the shift of absorbing center frequency to low frequency. The evaluation index for the EM repairability increases with the increase of repair area. The mechanical repairability is better than EM repairability after patch and scarf repair. Single-sided scarf repair with scarf slope of 20∶1 is the repair scheme with the best mechanical and EM comprehensive repairability.

Key words: microwave-absorbing honeycomb, repair technology, electromagnetic property, mechanical property, damage

CLC Number:

V267⁺.46

Leilei YAN, Jian HU, Ruilin HUANG, Linhao CHENG, Maoyuan LI, Xitao ZHENG. Comprehensive evaluation of mechanical and electromagnetic repairability of damaged microwave-absorbing honeycomb structure[J]. Acta Aeronautica et Astronautica Sinica, 2026, 47(6): 432370.

Figures/Tables 26

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References 34

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材料	参数	数值
G15000/6509/33%	0°拉伸强度/MPa	950
	0°拉伸模量/GPa	42
	0°压缩强度/MPa	700
	0°层间剪切强度/MPa	50
BHC-NH1-4.5-48	Z向压缩强度/MPa	1.63
	L向剪切强度/MPa	0.91
	L向剪切模量/MPa	32.0
	W向剪切强度/MPa	0.45
	W向剪切模量/MPa	17.0

修补方式	试验件编号	峰值载荷		压缩刚度		失效位移/mm	主要失效模式
修补方式	试验件编号	数值/kN	占比/%	数值/（kN∙mm^-1）	占比/%	失效位移/mm	主要失效模式
无损结构	WS-1	25.2		15.21		1.73	面板压溃
	WS-2	13.51		11.02		1.67	面芯脱粘
	WS-3	25.54		14.99		1.75	面板压溃
单面贴补	TB-0.2-10-1	17.97	70.7	16.36	108.3	1.66	蜂窝剪切、压溃
	TB-0.2-10-2	11.99	47.2	11.64	77.1	1.97	蜂窝剪切、面芯脱粘
	TB-0.2-10-3	17.03	67.0	16.29	107.9	1.69	蜂窝剪切、压溃
	TB-0.2-20-1	17.66	69.5	16.27	107.7	1.91	蜂窝剪切
	TB-0.2-20-2	21.89	86.1	18.40	121.9	1.63	蜂窝剪切、压溃
	TB-0.2-20-3	21.33	83.9	17.69	117.2	1.70	蜂窝剪切、压溃
	TB-0.2-30-1	16.90	66.5	18.04	119.5	1.43	蜂窝剪切、压溃
	TB-0.2-30-2	16.21	63.8	19.05	126.2	1.48	蜂窝剪切、压溃
	TB-0.2-30-3	23.04	90.7	21.07	139.5	1.43	蜂窝剪切、压溃
单面挖补	WB-0.2-10-1	25.57	100.6	18.69	123.8	2.01	蜂窝剪切、压溃、面芯脱粘
	WB-0.2-10-2	25.76	101.4	18.76	124.2	2.03	蜂窝剪切、压溃、面芯脱粘
	WB-0.2-10-3	15.37	60.5	15.24	100.9	1.40	夹芯板整体屈曲
	WB-0.2-20-1	15.63	61.5	15.42	102.1	1.38	夹芯板整体屈曲
	WB-0.2-20-2	28.27	111.3	21.83	144.6	1.79	蜂窝剪切、压溃、面芯脱粘
	WB-0.2-20-3	27.88	109.7	20.17	133.6	1.72	蜂窝剪切、压溃、面芯脱粘
	WB-0.2-30-1	27.35	107.6	19.58	129.7	2.03	蜂窝剪切、压溃
	WB-0.2-30-2	24.74	97.4	19.48	129.0	2.15	蜂窝剪切、压溃
	WB-0.2-30-3	24.82	97.7	19.66	130.2	2.16	蜂窝剪切、压溃

类别	参数	数值
峰值	测量值1/kN	25.28
	测量值2/kN	25.54
	均值/kN	25.41
	差值/%	0.70
刚度	测量值1/（kN·mm^-1）	15.21
	测量值2/（kN·mm^-1）	14.99
	均值/（kN·mm^-1）	15.10
	差值/%	0.40

结构	类别	参数	数值
TB-0.2-10	峰值	测量值1/kN	17.97
		测量值3/kN	17.03
		均值/kN	17.50
		差值/%	5.50
	刚度	测量值1/（kN·mm^-1）	16.36
		测量值3/（kN·mm^-1）	16.29
		均值/（kN·mm^-1）	16.33
		差值/%	0.40
TB-0.2-20	峰值	测量值2/kN	21.89
		测量值3/kN	21.33
		均值/kN	21.61
		差值/%	2.60
	刚度	测量值2/（kN·mm^-1）	18.40
		测量值3/（kN·mm^-1）	17.69
		均值/（kN·mm^-1）	18.05
		差值/%	4.00
TB-0.2-30	峰值	测量值1/kN	16.90
		测量值2/kN	16.21
		均值/kN	16.56
		差值/%	4.30
	刚度	测量值1/（kN·mm^-1）	18.04
		测量值2/（kN·mm^-1）	19.05
		均值/（kN·mm^-1）	18.55
		差值/%	5.60

结构	类别	参数	数值
WB-0.2-10	峰值	测量值1/kN	25.57
		测量值2/kN	25.76
		均值/kN	25.67
		差值/%	0.70
	刚度	测量值1/（kN·mm^-1）	18.69
		测量值2/（kN·mm^-1）	18.76
		均值/（kN·mm^-1）	18.73
		差值/%	0.40
WB-0.2-20	峰值	测量值2/kN	28.27
		测量值3/kN	27.88
		均值/kN	28.08
		差值/%	1.40
	刚度	测量值2/（kN·mm^-1）	21.83
		测量值3/（kN·mm^-1）	20.17
		均值/（kN·mm^-1）	21.00
		差值/%	8.20
WB-0.2-30	峰值	测量值2/kN	24.74
		测量值3/kN	24.82
		均值/kN	24.78
		差值/%	0.30
	刚度	测量值2/（kN·mm^-1）	19.48
		测量值3/（kN·mm^-1）	19.66
		均值/（kN·mm^-1）	19.57
		差值/%	0.90

Comprehensive evaluation of mechanical and electromagnetic repairability of damaged microwave-absorbing honeycomb structure

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结构	工艺参数	S_11-md/dB	f_vly/GHz	w/GHz
无损结构	无损	0	13.325	5.432
单面贴补	w_dj=10 mm	1.72	13.138	5.253
	w_dj=20 mm	4.47	12.696	4.896
	w_dj=30 mm	6.60	12.424	4.046
单面挖补	α=10	1.15	13.223	5.202
	α=20	1.91	13.138	5.015
	α=30	2.73	13.053	4.760

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修理工况	d/mm	α	d₂ /mm
A	40	15	90
B	30	20	90
C	20	25	90