Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (01): 124-130.doi: 10.13475/j.fzxb.20190101507

• Apparel Engineering • Previous Articles     Next Articles

Effect of clothing structure and dummy model on shielding effectiveness of electromagnetic protecting clothing

WANG Qiuhan1, WANG Yajing2, DONG Keping3, XIAO Hong1,4()   

  1. 1. School of Fashion, Wuhan Textile University, Wuhan, Hubei 430073, China
    2. Beijing Jike Protection & Tech. Co., Ltd., Beijing 100124, China
    3. College of Textiles, Donghua University, Shanghai 201620, China
    4. Institute of Quartermaster Engineering & Technology, Institute of System Engineering, Academy of Military Science, Beijing 100010, China
  • Received:2019-01-02 Revised:2019-08-29 Online:2020-01-15 Published:2020-01-14
  • Contact: XIAO Hong E-mail:76echo@vip.sina.com

RichHTML

6

PDF (Mobile)

73

Abstract:

In order to explore the shielding effectiveness and influencing factors of different structures and styles of clothing made of the same electromagnetic shielding fabric,four types of electromagnetic protecting clothing were designed for testing in semi-anechoic chamber by wearing dummy method. The factors affecting the electromagnetic shielding effectiveness were analyzed. The results show that the clothing style, seam gap, test location, dummy model stuffing with absorbing materials, and the polarization direction of electromagnetic field were found as the factors affecting the shielding effectiveness, especially the clothing style and seam gap. The shielding effectiveness went higher in the sequence of vest, coat, split suit to conjoined suit. When conductive fabric patches were applied to the abdominal seam gap of split suits, the shielding effectiveness was greatly improved. After filling the back of the dummy model with an absorbing material to eliminate the multiple electromagnetic reflections in the resonator, the shielding effectiveness of the test was also improved. The effect of opening on shielding effectiveness was proved not significant, when the neckline and cuff were tightly designed. Due to the influence of the seam direction of clothing, there are differences in shielding effectiveness for vertical and horizontal polarization of electromagnetic waves.

Key words: electromagnetic protecting clothing, clothing style, shielding effectiveness, dummy model

CLC Number: 

  • TS102

Tab.1

Fabric parameters of electromagnetic protective clothing"

防护服织物结构 颜色 材料 面密度/(g·m-2) 电导率/(S·m-1) 平均屏蔽效能/dB
外层 蓝色 涤/棉织物 200 — —
中间层 金属色 镀铜镍织物 75 105 55(2~18 GHz)
里层 蓝色 涤纶织物 65 — —

Fig.1

Test pictures of wearing electromagnetic protective clothing"

Fig.2

Installation position of mini double ridge horn antenna in human model. (a) Whole body picture;(b) Head; (c) Chest; (d) Abdomen"

Tab.2

Reflection loss of absorbing materials in range of 1-50 GHz"

频率/GHz 反射损耗/dB 频率/GHz 反射损耗/dB
1 10 6 23
2 13 10 26
3 20 18 28

Fig.3

Shielding efficiency of chests with different clothing structures. (a) Vest and coat;(b) Split and integrated clothing"

Fig.4

Shielding efficiency of abdomen with different clothing structures. (a) Coat; (b) Split and integrated clothing"

Tab.3

Average shielding efficiency of same testing site for different garment styles"

测试
部位		 服装
款式		 屏蔽效能/dB
未填充吸波材料 填充吸波材料
胸部 马甲 14 23
大褂 28 37
分体服 26 31
连体服 31 41
下腹部 大褂 30 35
分体服 30 39
连体服 15 14
头部 连体服 28 27

Fig.5

Shielding effectiveness of coat (a) and split suits (b) on chest and lower abdomen"

Fig.6

Shielding effectiveness of head, chest and lower abdomen of conjoined suit"

Fig.7

Shielding fabric adhering seam diagram of protective clothing. (a) Shielding fabric long strips; (b) All over body are covered with shielding fabric"

Fig.8

Effect of gaps on shielding efficiency of connected suits. (a) Chest; (b) Abdomen"

Fig.9

Influence of garment accessories on shielding effectiveness. (a) Chest; (b) Abdomen"

Fig.10

Shielding efficiency of coat under different polarization conditions. (a) Chest; (b) Abdomen"

[1] 陈万金, 陈燕俐, 蔡捷. 辐射及其安全防护技术[M]. 北京: 化学工业出版社, 2006:24-25.
CHEN Wanjin, CHEN Yanli, CAI Jie. Radiation and safety protection technology [M]. Beijing: Chemical Industry Press, 2006:24-25.
[2] 伏广伟, 湛权, 王瑞, 等. 防电磁辐射服装暴露面积对其屏蔽效能的影响[J]. 纺织学报, 2009,30(12):103-107.
FU Guangwei, ZHAN Quan, WANG Rui, et al. Shielding effectiveness difference of anti-electromagnetic radiation garment caused by its exposure area[J]. Journal of Textile Research, 2009,30(12):103-107.
[3] 吴冬燕. 电磁屏蔽服屏蔽效能的影响因素研究[D]. 苏州:苏州大学, 2015:15-19.
WU Dongyan. Study on the influencing factors of shielding effectiveness of electromagnetic shielding clothing[D]. Suzhou:Soochow University, 2015:15-19.
[4] 苏莹. 开口部位对电磁屏蔽服装屏蔽效能的影响[D]. 郑州:中原工学院, 2018:12-13.
SU Ying. The influence of opening position on shielding effectiveness of electromagnetic shielding clothing[D]. Zhengzhou: Zhongyuan Institute of Technology, 2018:12-13.
[5] 汪秀琛. 防电磁辐射服装屏蔽机理研究及建模[D]. 西安:西安工程大学, 2006:48-51.
WANG Xiuchen. Research and modeling of shielding mechanism of anti-electromagnetic radiation clothing[D]. Xi'an:Xi'an Polytechnic University, 2006:48-51.
[6] 刘畅. 防电磁辐射服装屏蔽效能测试方法研究[D]. 北京:北京交通大学, 2009:23-27.
LIU Chang. Study on the test method of shielding effectiveness of anti-electromagnetic radiation clothing[D]. Beijing:Beijing Jiaotong University, 2009:23-27.
[7] 张伟伟. 防辐射服电磁屏蔽效能评价研究[J]. 科技创新与生产力, 2017(6):106-109.
ZHANG Weiwei. Evaluation of electromagnetic shielding effectiveness of radiation-proof clothing[J]. Scientific and Technological Innovation and Productivity, 2017(6):106-109.
[8] 施楣梧, 王群, 唐章宏, 等. 电磁辐射防护服屏蔽效能测量系统的研制[J]. 安全与电磁兼容, 2015(1):23-25,51.
SHI Meiwu, WANG Qun, TANG Zhanghong, et al. Development of shielding effectiveness measurement system for electromagnetic radiation protective clothing[J]. Safety and Electromagnetic Compatibility, 2015 (1):23-25,51.
[9] 程慧斌. 缝隙对屏蔽效能影响要素分析[C]// 2013年全国微波毫米波会议论文集. 北京: 中国电子学会出版社, 2013:1552-1555.
CHENG Huibin. Analysis of the factors affecting shielding effectiveness by slots[C]// Proceedings of the 2013 national conference on microwave and millimeter waves. Beijing: China Academic Journal Electronic Publishing House, 2013:1552-1555.
[10] 孙丽芳, 王向晖, 齐红新, 等. 微波防护服开口对防护性能影响的计算[J]. 强激光与粒子束, 2017(4):38-44.
SUN Lifang, WANG Xianghui, QI Hongxin, et al. Calculation of the effect of microwave protective clothing opening on protective performance[J]. High Power Laser and Particle Beam, 2017 (4):38-44.
[1] MIAO Runwu, JIN Lihua, WEI Qiyu, HAN Xiao, HONG Jianhan. Preparation and electromagnetic shielding property of conductive poly(p-phenylene terephamide) of reinforced composite materials [J]. Journal of Textile Research, 2019, 40(02): 100-104.
[2] . Preparation and properties of polypyrrole/cotton anti-microwave radiation fabric [J]. Journal of Textile Research, 2018, 39(09): 95-101.
[3] . Influence of clothing styles on local thermal transfer performance [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(05): 92-96.
[4] . Shielding effectiveness of double and multilayer electromagnetic shielding fabric [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(09): 51-58.
[5] . Clothing style recognition approach using Fourier descriptors and support vector machines [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(05): 122-127.
[6] . Comparative research on electromagnetic shielding effectiveness of fabric tested by flange coaxial method and shielding chamber method [J]. Journal of Textile Research, 2016, 37(3): 47-54.
[7] . Simulation analysis of woven fabric electromagnetic shielding effectiveness using finite integration technique [J]. Journal of Textile Research, 2016, 37(2): 155-160.
[8] . Review on theoretical calculation of shielding effectiveness of electromagnetic shielding fabrics [J]. Journal of Textile Research, 2016, 37(2): 161-169.
[9] . Situation analysis of evaluation standard for measuring shielding effectiveness of anti-electromagnetic radiation textiles [J]. Journal of Textile Research, 2016, 37(2): 170-176.
[10] . Shielding effectiveness of double electromagnetic shielding fabric [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(01): 47-51.
[11] . Influential factors of electromagnetic shielding effectiveness based on the effective woven fabrics structure model [J]. Journal of Textile Research, 2015, 36(07): 43-49.
[12] . Research on conductive grid structure and generaliInfluence factors to shielding effectiveness of electromagnetic shielding fabrics [J]. Journal of Textile Research, 2015, 36(02): 35-42.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
京ICP备14006648号
Copyright 2021 © Editorial office of Journal of Textile Research
Supported by Beijing Magtech Co.Ltd