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- 저자 : 이규린 ( Kyu Lin Lee ) (검색결과 2 건)
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PTFE(Polytetrafluoroethylene) 라미네이팅 투습발수직물의 총음압 최소화를 위한 필름 타입 별 기본 특성과 역학 특성
이규린 ( Kyu Lin Lee ),이지현 ( Jee Hyun Lee ),진은정 ( Eun Jung Jin ),양윤정 ( Youn Jung Yang ),조길수 ( Gil Soo Cho ) 한국의류산업학회 2012 한국의류산업학회지 Vol.14 No.4
This study investigates the sound properties of fabric frictional sound (SPL, ΔL, Δf) according to the film type of PTFE laminated vapor-permeable water-repellent fabrics in order to understand the relationship between SPL and the basic properties of fabrics such as layer, yarn type, and thickness of fiber. This study accesses their mechanical properties and determines how to control them to minimize SPL. Eight PTFE laminated water-repellent fabrics, composed of four different film types (A, B, C, D) and with two different fabrics, were used as test specimens, Frictional sounds generated at 1.21m/s were recorded by using a fabric sound generator and SPLs were analyzed through Fast Fourier Transformation (FFT), The mechanical properties of fabrics were measured by KES-FB. The SPL value was lowest at 74.4dB in film type A and highest as 85.5dB in type D. Based on ANOVA and post-hoc test, specimens were classified into less Loud Group (A, B) and Loud Group (C, D). It was shown that SPL was lower when 2 layer (instead of 3 layer), filament yarn than staple, and thin fiber than thick were used. In Group I, shearing properties (G, 2HG5), geometrical roughness (SMD), compressional properties (LC, RC) and weight (W) showed high correlation with SPL however, elongation (EM) and shear stiffness (G) did with SPL in Group II.
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스포츠웨어용 투습발수직물 소리가 심리음향학적 특성에 미치는 영향
이지현 ( Jee Hyun Lee ),이규린 ( Kyu Lin Lee ),진은정 ( Eun Jung Jin ),양윤정 ( Yoon Jung Yang ),조길수 ( Gil Soo Cho ) 한국감성과학회 2012 감성과학 Vol.15 No.2
본 연구에서는 심한 소음으로 불쾌감을 주는 스포츠웨어용 PTFE 라미네이팅 투습발수 직물 8종을 대상으로 직물 마찰음의 심리음향학적 특성을 고찰하고, 심리음향학적 특성에 영향을 미치는 직물의 기본 특성과 역학적 특성 간의 관계를 파악함으로써, 직물의 심리음향학적 마찰음을 낮출 수 있는 변인을 찾아내고자 하였다. 직물 마찰음 시뮬레이터를 이용하여 녹음한 직물의 소리에서 Zwicker의 파라미터인 심리음향학적 크기(loudness(Z)), 날카로움(sharpness(Z)), 거칠기(roughness(Z)), 그리고 변동강도(fluctuation strength(Z))를 계산한 뒤, 소리특성에 대한 사후검정 결과에 따라 시료를 덜 시끄러운 PTFE 필름 그룹과 더 시끄러운 PTFE 필름 그룹으로 나누어 마찰음의 심리음향학적 특성과 직물의 역학적 특성, 기본특성간의 관계를 고찰하였다. 심리음향학적 특성 중 loudness(Z)만이 시료의 마찰음과 유의한 관계에 있는 것으로 나타났으며, 분석 결과 직물의 기본 특성에서는 layer가 얇고 필라멘트사를 사용한 직물의 마찰음이 덜 시끄럽게 인지되는 것으로 나타났으며, 직물 마찰음의 심리음향학적 크기에 영향을 미치는 주요변수로는 layer로 것으로 나타났다. 심리음향학적 크기에 영향을 미치는 주요 역학변수로는 전단이력이 설명 변인으로 포함되었다. The objectives of this study were to investigate the psychoacoustic properties of PTFE(Poly tetra Fluoroethylene) laminated vapor permeable water repellent fabrics which are frequently used for sportswear, to examine the relationship among fabrics`` basic characteristics, mechanical properties and the psychoacoustic properties, and finally to propose the predicting model to minimize the psychoacoustic fabric sound. A total of 8 specimens`` frictional sound were recorded and Zwicker`s psychoacoustic parameters such as loudness(Z), sharpness(Z), roughness(Z), and fluctuation strength(Z) were calculated using the Sound Quality Program. Mechanical properties of specimens were measured by KES-FB system. Loudness (Z) of specimen D-1 was the highest, which means the rustling sound of the specimen D-1 was the most noisy, Statistically significant difference among film type was observed only in loudness (Z) for fabric sound, Based on ANOVA and post-hoc test, specimens were classified into less loud PTFE film group (groupⅠ) and loud PTFE film group (groupⅡ). Loudness (Z) was higher when staple yarn was used compared when filament yarn was used. According to the correlation between the mechanical properties of fabrics and loudness(Z) in groupⅠ, the shear properties, compression properties and weight showed positive correlation with loudness(Z). According to the regression equation predicting loudness(Z) of groupⅠ, the layer variable was chosen. In groupⅡ, variables explaining the loudness(Z) were yarn types and shear hysteresis(2HG5).
ScienceON
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