In this paper, we study a non-linear numerical scheme arising from the implicit time discretization of the Bažant-Thonguthai model for hygro-thermal behavior of concrete at high temperatures. Existence of the time-discrete solution in two dimensions is established using the theory of pseudomonotone operators in Banach spaces. Next, the spatial discretization is accomplished by the conforming fi...

The coupled heat and moisture actions could easily cause deformation, cracking corrosion problems in the slab ballastless track under operational conditions via China Railway Track System (CRTS) Ⅱ. In this paper, two one-quarter-scaled models of CRTS Ⅱ hygro-thermal environment were tested a testing chamber, respectively. To study effect constrained on structural performance structure, temperat...

Purpose – The purpose of this paper was to study the combined effect of hygro and thermo-mechanical behavior on a plastic encapsulated micro-electro-mechanical systems (MEMS) package during the reflow process after exposed to a humid environment for a prolonged time. Plastic encapsulated electronic packages absorb moisture when they are subjected to humid ambient conditions. Design/methodology/...

in this study multivariate statistical analysis are used to characterize relationships between hydrochemical properties ofthermal and non-thermal springs. four factors for thermal waters and two for non-thermal springs were extracted basedon factor analysis. in thermal springs, the first factor showed high loading on ca, mg, na and k and this factor wasinterpreted as leaching of cations in the ...

in this study multivariate statistical analysis are used to characterize relationships between hydrochemical properties ofthermal and non-thermal springs. four factors for thermal waters and two for non-thermal springs were extracted basedon factor analysis. in thermal springs, the first factor showed high loading on ca, mg, na and k and this factor wasinterpreted as leaching of cations in the ...

The effects of microwave and steam treatment were analyzed relative to the immediate (thermo-hygro-plasticity) post-assessed (permanent changes) properties wood. study was conducted using European beech (Fagus sylvatica L.) standard 1.5 times up-scaled (only for microwave-heated reference samples) bending specimens tested in a static three-point loading mode. plasticized by heat moisture (1) se...

New technological and scientific advances in the development of sensors actuators demand new devices to deal with recent problems challenges these emerging processes. Moreover, paper-based have tremendous potential for developing as paper exhibits capillary transport hygroexpansion due swelling fibers when absorbing water. Therefore, this proposes a mini actuator that is based on hygro-thermal-...