|
|
|
| Study on Factors to Improve Comfort of Stab-resistant Vests Taking into Account Wearing Pressure and Movement Restriction |
| Kyoungok Kima, Ken Takei, Masayuki Takatera |
|
|
|
|
Abstract In this paper, we investigated factors affecting movement restriction while wearing stab-resistant vests with the aim of improving their comfort. We measured the contact area and pressure between the vest and a dummy, and performed sensory tests for movement restriction in the wearer's arms and upper body using four vests of different sizes, weight and types of stab -proof material. The pressure distribution of the vests on a dummy was measured and cross-sections of dummy-worn vests were obtained by 3D scan. For these measurements, we controlled the tightness value, the ratio between vest waist circumference and dummy. In order to check the influence of vests on the movement of the arm and upper body, subjects evaluated movement restriction and the feeling of pressure on the waist, chest, abdomen and back. We discovered that vests tend to hang on the neck point, shoulder, chest and back. The pressure on the chest increased with increasing tightness value, while the abdomen was under pressured to a forward bending position. Thus, shorter stab-resistant materials at the vest front have less movement restriction. In the arms, subjects reported less movement restriction when they felt that the shoulder area was softer. Therefore, we discovered that contact area and pressure should be considered in the design of stab-resistant vests to improve the comfort of the wearer.
|
|
|
|
|
|
| Cite this article: |
|
Kyoungok Kima,Ken Takei,Masayuki Takatera. Study on Factors to Improve Comfort of Stab-resistant Vests Taking into Account Wearing Pressure and Movement Restriction[J]. Journal of Fiber Bioengineering and Informatics, 2013, 6(3): 237-251.
|
|
[1] Schutz H, Cardello A, Winterhalter C. Perceptions of fiber and fabric uses and the factors con-tributing to military clothing comfort and satisfaction, Text Res J2005; 75: 223-232
[2] Ping WD, Sun B, Gu B. Comparison of stab behaviors of uncoated and coated woven fabrics from experimental and finite element analyses. Text Res J 2012; 82(13): 1337-1354
[3] Alpyildiz T, Rochery M, Kurbak A, Flambard X. Stab and cut resistance of knitted structures: a comparative study. Text Res J 2011; 81(2): 205-214
[4] Levinsky AA, Sapozhnikov SB, Grass TS. Development of knife- and bullet-impact-resistant struc-tures. Mech Compos Mater 2012; 48(4): 405-414
[5] Jacobs MJN, Dingenenand JLJV. Ballistic protection mechanisms in personal armour, J Mater Sci 2001; 36(13): 3137-3142
[6] Rochery M, Kurbak A, and Flambard X, Stab and cut resistance of knitted structures: a compar-ative study Tuba Alpyildiz, Text Res J2011; 81(2): 205-214
[7] Debra C, Mark H, Liz G, Nicky G. Degradation of military body armor due to wear: Laboratory testing Ryan Pinto, Textile Research Journal, 2012; 82(11): 1157-1163
[8] Francois B. The use of warp interlock fabric inside textile composite protection against ballistic impact, Textile Research Journal (2011); 81(4): 344-354
[9] Li J, Lu Y, and Li X. Effect of relative humidity coupled with air gap on heat transfer of flame-resistant fabrics exposed to flash fires, Text Res J2012; 82(12): 1235-1243
[10] Li X, Wang Y, Lu Y. Effects of body postures on clothing air gap inprotective clothing, Journal of Fiber Bioengineering & Informatics 2011; 4(3): 277¨C283
[11] Hadid A, Yanovich R, Erlich T, Khomenok G and Moran D S. Effect of a personal ambient ven-tilation system on physiological strain during heat stress wearing a ballistic vest, Eur J ApplPhys 2008; 104(2): 311-319
[12] Huck J, Maganga O, Kim Y. Protective overalls: Evaluation of garment design and fit, Interna-tional Journal of Clothing Science 1997; 9(1): 45-61
[13] Huck, J, Kim Y. Coveralls forgrass fire fighting, International Journal of Clothing Science and Tec1997; 9(5): 346-359
[14] Barker J, Black C, Cloud R. Comfort comparison of ballistic vest panels for police officers, JTATM 2010; 6(3): 1-12
[15] Lee H, Hong K, Kim S and Lee Y. Effects of fit on pressure distribution and momentum of ballistic body armor vest in jump, Text ResJ published online 8 March 2013 |
|
|
|
2013, Vol. 6 
