A multi-physics approach on modeling of hygrothermal aging and its effects on constitutive behavior of cross-linked polymers

2021 ◽  
Vol 156 ◽  
pp. 104614
Author(s):  
Amir Bahrololoumi ◽  
Vahid Morovati ◽  
Mamoon Shaafaey ◽  
Roozbeh Dargazany
Keyword(s):  
Constitutive Behavior ◽  
Hygrothermal Aging

Application of QR framework in modeling the constitutive behavior of porcine coronary sinus tissue

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Shahla Zamani ◽  
Sandipan Paul ◽  
Akhilesh A. Kotiya ◽  
John C. Criscione ◽  
Alan D. Freed
Keyword(s):  
Coronary Sinus ◽  
Constitutive Behavior

Hygrothermal aging behavior and aging mechanism of carbon nanofibers/epoxy composites

2021 ◽  
Vol 294 ◽  
pp. 123538
Author(s):  
Yanlei Wang ◽  
Ziping Meng ◽  
Wanxin Zhu ◽  
Baolin Wan ◽  
Baoguo Han ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Epoxy Composites ◽  
Aging Behavior ◽  
Hygrothermal Aging ◽  
Aging Mechanism

Study on the Aging Rules of Rigid Polyurethane Foams at Indoor Storage and Different Hygrothermal Conditions

2005 ◽  
Vol 24 (4) ◽  
pp. 197-208 ◽  
Author(s):  
Yuan-Jun Liu ◽  
Wen Zhai ◽  
Chuan-Lan He ◽  
Jian-Guo Deng ◽  
Ke-Jian Ji ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Aging Time ◽  
Fire Retardant ◽  
Ester Group ◽  
Polyurethane Foams ◽  
Compressive Modulus ◽  
Glass Beads ◽  
Hygrothermal Aging ◽  
Aging Properties ◽  
Mass Dimension

The aging rules of rigid polyurethane foam (PUR) at indoor storage and different hygrothermal conditions have been studied. Four parameters, which are mass, dimension, compressive strength and compressive modulus were tested. At indoor storage, mass, dimension and compressive strength vary slowly with an increase in aging time, while compressive modulus decreases quickly. PUR is sensitive to relative humidity (RH) verified by accelerated hygrothermal aging, and hydrolysis of ester group is the main reason resulting in the decrease of compressive properties. The filling with fire retardant and glass beads had some effect on hygrothermal aging properties of PUR. The addition of fire retardant increased compressive strength with aging time in the total trend, but it made dimension stability worse. The addition of glass beads slightly improved hygrothermal aging properties.

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