인장속도가 ETFE 막재의 역학적 특성에 미치는 영향

Title
인장속도가 ETFE 막재의 역학적 특성에 미치는 영향
Other Titles
Influence of Tensile Speed on Mechanical Properties of ETFE Membrane
Author(s)
강주원김재열[김재열]
Keywords
ETFE Membrane; Tensile Speed; Tensile Strength; Yield Stress; Young's Modules. Linear Fitting Formula; ETFE 막재; 인장속도; 인장강도; 항복응력; 탄성 계수; 선형대입공식
Issue Date
201005
Publisher
대한건축학회
Citation
대한건축학회논문집 구조계, v.26, no.05, pp.43 - 50
Abstract
Uniaxial tensile tests of strip ETFE foil specimens (thickness: 250μm) are carried out for six kinds of tensile speeds (tensile strain speeds: 10%, 25%, 50%, 100%, 200%, 500% min-1). The tensile strength, the tensile strain at break, the yield stress and the Young’s modulus under different tensile speeds are obtained from the tests. According to the results of the tests, with the increase of the tensile speed: the tensile strength of ETFE membrane increases slightly while the tensile strain at break decreases; the yield stress of ETFE membrane increases a little but the second yield stress increases little; the yield strain of membrane increases too but the second yield strain decreases slightly. It is also found that the tangent and the second Young’s modulus of ETFE membrane present a descending trend while the secant and the third Young’s modulus have no obvious change when the tensile speed increases. By analyzing the results of the tests, the linear fitting formulas to calculate the mechanical parameters of ETFE membrane are presented through using the logarithm of tensile strain speed as the variable.
URI
http://hdl.handle.net/YU.REPOSITORY/22397
ISSN
1226-9107
Appears in Collections:
건축학부 > 건축학부 > Articles
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