Thermal conductivity and thermal expansion behavior of glass fiber-reinforced rigid polyurethane foam

1984 ◽  
Vol 24 (12) ◽  
pp. 943-949 ◽  
Author(s):  
Kiyotake Morimoto ◽  
Toshio Suzuki ◽  
Ryutoku Yosomiya
Keyword(s):  
Thermal Conductivity ◽  
Thermal Expansion ◽  
Glass Fiber ◽  
Polyurethane Foam ◽  
Rigid Polyurethane Foam ◽  
Fiber Reinforced ◽  
Thermal Expansion Behavior ◽  
Glass Fiber Reinforced ◽  
Expansion Behavior

Stress relaxation of glass-fiber-reinforced rigid polyurethane foam

1984 ◽  
Vol 24 (12) ◽  
pp. 1000-1005 ◽  
Author(s):  
Kiyotake Morimoto ◽  
Toshio Suzuki ◽  
Ryutoku Yosomiya
Keyword(s):  
Stress Relaxation ◽  
Glass Fiber ◽  
Polyurethane Foam ◽  
Rigid Polyurethane Foam ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced

Characterization of the Compressive Behavior of Glass Fiber Reinforced Polyurethane Foam at Different Strain Rates

2010 ◽  
Vol 132 (2) ◽  
Author(s):  
Huiyang Luo ◽  
Yanli Zhang ◽  
Bo Wang ◽  
Hongbing Lu
Keyword(s):  
Glass Fiber ◽  
Young’S Modulus ◽  
Polyurethane Foam ◽  
Master Curve ◽  
Young's Modulus ◽  
Superposition Principle ◽  
Strength Increase ◽  
Strain Rates ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced

A glass fiber reinforced polyurethane foam (R-PUF), used for thermal insulation of liquefied natural gas tanks, was characterized to determine its compressive strength, modulus, and relaxation behavior. Compressive tests were conducted at different strain rates, ranging from 10−3 s−1 to 10 s−1 using a servohydraulic material testing system, and from 40 s−1 to 103 s−1 using a long split Hopkinson pressure bar (SHPB) designed for materials with low mechanical impedance such as R-PUF. Results indicate that in general both Young’s modulus and collapse strength increase with the strain rate at both room and cryogenic (−170°C) temperatures. The R-PUF shows a linearly viscoelastic behavior prior to collapse. Based on time-temperature superposition principle, relaxation curves at several temperatures were shifted horizontally to determine Young’s relaxation master curve. The results show that Young’s relaxation modulus decreases with time. The relaxation master curve obtained can be used to convert to Young’s modulus at strain rates up to 103 s−1 following linearly viscoelastic analysis after the specimen size effect has been considered.

The thermal expansion behavior of unidirectional SiC fiber-reinforced Cu–matrix composites

2008 ◽  
Vol 58 (5) ◽  
pp. 401-404 ◽  
Author(s):  
Xian Luo ◽  
Yanqing Yang ◽  
Cuixia Liu ◽  
Ting Xu ◽  
Meini Yuan ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Thermal Expansion Behavior ◽  
Sic Fiber ◽  
Expansion Behavior
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