微光像增强器塑料外壳受力分析

唐钦; 杨壮; 宋海涛; 叶洪伟; 张新月

微光像增强器塑料外壳受力分析

驻重庆地区军事代表局驻昆明地区第二军事代表室，云南昆明 650032

详细信息

作者简介:
唐钦（1973-），男，四川遂宁人，高级工程师，主要从事光电装备质量监督工作。E-mail: 2302289947@qq.com

中图分类号: TN223
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- 被引次数: 0
出版历程
- 收稿日期: 2021-02-06
- 修回日期: 2021-03-26
- 刊出日期: 2021-05-22

Stress Analysis of the Plastic Shells of Image Intensifiers

The Second Military Representative Office of Chongqing Regional Military Representative Bureau in Kunming, Kunming 650032, China

摘要

摘要: 为摸清微光像增强器塑料外壳受力规律，掌握质量变化特点，运用形变理论，建立硅橡胶形变数学模型，拟合塑料外壳受力曲线，据此确定微光像增强器塑料外壳出现开裂的必然性和寿命周期特点。结果表明：数学模型与试验数据高度吻合，能够表征塑料外壳受力情况及寿命变化规律。
- 微光像增强器 /
- 形变 /
- 可靠性 /
- 塑料外壳 /
- 硅橡胶
Abstract: To determine the law of stress on the plastic shells of image intensifiers and to identify the characteristics of quality change, the deformation theory is used in this study to establish a mathematical model of silicone rubber deformation and to fit the stress curves of plastic shells. Accordingly, the inevitability and life-cycle characteristics of the plastic shells of image intensifiers are determined. The results show that the mathematical model is in good agreement with the experimental data and can characterize the stress conditions and life variations of plastic shells.
- image intensifier /
- deformation /
- reliability /
- plastic shell /
- silicone rubber

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图 1 像增强器示意图

Figure 1. Schematic diagram of image intensifier

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图 2 固有应力示意图

Figure 2. Schematic diagram of natural stress

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图 3 像增强器外径与温度回归分析结果

Figure 3. Regression analysis results of image intensifier outer diameter and temperature

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图 4 像增强器外壳受力趋势图

Figure 4. Force trend of image intensifier shell

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图 5 外壳强度趋势示意图

Figure 5. Tensile strength trend diagram of shell

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图 6 外壳强度与受力趋势图

Figure 6. Shell tensile strength and stress trend diagram

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表 1 不同温度下像增强器外径测试值

Table 1. External diameters of image intensifiers measured at different temperatures

Temperature/℃	Cathode extreme/mm	Middle region/mm	Anode extreme/mm	Average /mm
-54	36.497	36.487	36.510	36.498
-43	36.533	36.517	36.543	36.531
-32	36.567	36.553	36.573	36.564
-21	36.600	36.600	36.597	36.599
-10	36.633	36.627	36.643	36.634
1	36.657	36.667	36.667	36.663
12	36.683	36.683	36.693	36.687
23	36.717	36.713	36.713	36.712
34	36.733	36.740	36.737	36.737
45	36.760	36.753	36.753	36.756
56	36.783	36.783	36.780	36.782
67	36.810	36.807	36.803	36.807

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表 2 吸潮微光像增强器外径和L₁值

Table 2. External diameter and L₁ values of the moistureabsorber image intensifier

Year	Diameter/mm	L₁ value/mm	Remarks
2013	36.92	35.92	Shell cracking
2014	36.89	35.89	Shell cracking
2015	36.88	35.88	Shell cracking
2016	36.83	35.83	Shell cracking
2017	36.76	35.76	Shell not cracked
2018	36.75	35.75	Shell not cracked
2019	36.72	35.72	Shell not cracked

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表 3 未吸潮微光像增强器外径和L₂值

Table 3. External diameter and L₂ values of non-moisture imageintensifier

Serial number	Diameter/mm	L₂ value/mm	Average/mm	Note
1	36.70	35.70	35.71	The wallThickness of the shell is 0.50 mm
2	36.71	35.71
3	36.73	35.73
4	36.70	35.70
5	36.71	35.71

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表 4 不同年份像增强器吸潮应力值

Table 4. Moisture absorption stress values of image intensifier in different years

Year	2013	2014	2015	2016	2017	2018	2019	2020
Natural stress/MPa	14.10	12.12	11.45	8.08	3.37	2.69	0.68	0

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参考文献(10)

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