Molten metal meniscus profile and mold flux channel width were measured under high frequency magnetic field by model experiments, then the dynamic pressure in mold flux channel were calculated during one mold oscillation period. It is found that the high frequency magnetic field can decrease the dynamic pressure greatly, which may be one mechanism of improving the billets surface quality by the...

In-mold Assembly process at the mesoscale presents several manufacturing challenges. Results reported in this paper demonstrate the technical feasibility of creating rigid body mesoscale revolute joints using In-Mold Assembly process. The following new results are reported in this paper. First, we describe a mold design with varying cavity shape to perform In-Mold Assembly. This mold design use...

In this paper, we fabricated a fluorinated organic-inorganic hybrid mold using a nonhydrolytic sol-gel process which can produce a crack-free mold without leaving any trace of solvent. No special chemical treatment of a release layer is needed because the fluorinated hybrid mold has fluorine molecules in the backbone. The other advantages of the hybrid mold are thermal stability over 300 degree...

background the importance of preserving and maintaining printed materials is crucial for the libraries. fungi play the main role in destroying wood and paper. objectives this research aimed to study and identify threatening fungal agents of library resources in isfahan university of medical sciences. materials and methods this is a descriptive analytical study. 126 samples were collected and ex...

The environmental relative moldiness index (ERMI) metric was previously developed to quantify mold contamination in U.S. homes. This study determined the applicability of the ERMI for quantifying mold and moisture damage in Finnish residences. Homes of the LUKAS2 birth cohort in Finland were visually inspected for moisture damage and mold, and vacuumed floor dust samples were collected. An ERMI...

In this study, mechanically milled (MM) Al-24TiO2-20B2O3 powder in molten Al7075 matrix was used order to fabricate in-situ TiB2 and Al2O3 reinforcements matrix. Differential thermal analysis (DTA) examination adopted find reaction temperature between Al, TiO2, B2O3 powders. X-Ray Diffraction (XRD) patterns showed the existence of peaks (750 °C at Ar atmosphere) MM powder. Scanning Electron Mic...

An important step in the mold design process that ensures disassembly of mold pieces consists of identifying various regions on the part that will be formed by different mold pieces. This paper presents an efficient and robust algorithm to find and highlight the mold-piece regions on a part. The algorithm can be executed on current-generation computer graphics hardware. The complexity of the al...

In a previous study, microfabricated bonded magnets have been utilized in MEMS-based electromagnetic membrane actuators (EMMAs) to drive micropumps. However, maintain the flexibility of packing density spin-coated needed be small (6 vol%) and this together with strong self-demagnetization effect meant that force generated was weak. As result, maximum displacement achieved only several microns. ...

Mold contamination is a growing concern for homeowners in terms of both physical health and insurance. Health experts, although they concede that exposure to mold can cause respiratory illnesses, are calling for further research into other mold-related health effects and for development of standards for mold sampling and data analysis. The insurance industry is grappling with how---and whether-...