Thermal Stress Influence on Adhesion of Polyurea Protective Coating Base on Substrate Processing System in High-Speed Railway

2012 ◽  
Vol 455-456 ◽  
pp. 775-780
Author(s):  
Ping Lu ◽  
Li Zhu ◽  
Jing Zhang ◽  
Wei Bo Huang
Keyword(s):  
Thermal Stress ◽  
Protective Coating ◽  
High Speed ◽  
Processing System ◽  
High Speed Railway ◽  
Substrate Processing ◽  
Stress Influence

Thermal Stress Influence on Adhesion of Polyurea Protective Coating Base on Substrate Processing System in High-Speed Railway

2012 ◽  
Vol 455-456 ◽  
pp. 775-780
Author(s):  
Ping Lu ◽  
Li Zhu ◽  
Jing Zhang ◽  
Wei Bo Huang
Keyword(s):  
Thermal Stress ◽  
Low Temperature ◽  
High Speed ◽  
Processing System ◽  
Structure Design ◽  
Epoxy System ◽  
Thermal Change ◽  
Strain Testing ◽  
Substrate Processing ◽  
Negative Factors

One of the negative factors of thermal is the effect on the adhesion of polymer coating. The high difference of thermal expansion coefficient between epoxy system and substrate is far, so put forward a new substrate system base on polyurethane (QTECH-112 system). To study the thermal change situation, the static strain testing and the substrate system microstrain change situation on low temperature and common temperature were tested respectively, and the mircostrain at the corners of the structure had also been tested. Results showed that both substrate systems had little microstrain in common temperature. But the epoxy system had high shrink strain under the low temperature, and caused the thermal stress, wihch could not be neglected during the concrete ; As a polyurethane elastomer, QTECH-112 system’s, thermal stress reduced by stress relaxation. The boundary of structure had limited on strain, so it should considered on structure design.

A Museum Filled with Past, Present and Future in High Speed Railway^|^mdash;SCMAGLEV and Railway Park^|^mdash;

2012 ◽  
Vol 132 (10) ◽  
pp. 673-676
Author(s):  
Takaharu TAKESHITA ◽  
Wataru KITAGAWA ◽  
Inami ASAI ◽  
Hidehiko NAKAZAWA ◽  
Yusuke FURUHASHI
Keyword(s):  
High Speed ◽  
High Speed Railway

Numerical Model Updating Technique for Estimating Load Carrying Capacities of High Speed Railway Bridges

2016 ◽  
Vol 106 (8) ◽  
pp. 490-497
Author(s):  
Dong-Uk PARK ◽  
Jae-Bong KIM ◽  
Nam-Sik KIM ◽  
Sung-Il KIM
Keyword(s):  
Numerical Model ◽  
High Speed ◽  
Model Updating ◽  
High Speed Railway ◽  
Railway Bridges ◽  
Load Carrying
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