What prompted you to go to Lesotho？ In July 2011, I got a call from the cultural authority of Foshan City in south China＇s Guangdong Province. They invited me and another artist, along with an interpreter, to go to ...What prompted you to go to Lesotho？ In July 2011, I got a call from the cultural authority of Foshan City in south China＇s Guangdong Province. They invited me and another artist, along with an interpreter, to go to Maseru, the capital of Lesotho, for two months to teach local people how to make展开更多
Elastic modulus is an important physical parameter of molding sand; it is closely connected with molding sand’s properties. Based on theories of rheology and molding sand microdeformation, elastic modulus of molding ...Elastic modulus is an important physical parameter of molding sand; it is closely connected with molding sand’s properties. Based on theories of rheology and molding sand microdeformation, elastic modulus of molding sand was measured and investigated using the intelligent molding sand multi-property tester developed by ourselves. The measuring principle was introduced. Effects of bentonite percentage and compactibility of the molding sand were experimentally studied. Furthermore, the essential viscoelastic nature of green sand was analyzed. It is considered that viscoelastic deformation of molding sand consists mainly of that of Kelvin Body of clay membrane, and elastic modulus of molding sand depends mainly on that of Kelvin Body which is the elastic component of clay membrane between sands. Elastic modulus can be adopted as one of the property parameters, and can be employed to evaluate the viscoelastic properties of molding sand.展开更多
文摘What prompted you to go to Lesotho？ In July 2011, I got a call from the cultural authority of Foshan City in south China＇s Guangdong Province. They invited me and another artist, along with an interpreter, to go to Maseru, the capital of Lesotho, for two months to teach local people how to make
文摘Elastic modulus is an important physical parameter of molding sand; it is closely connected with molding sand’s properties. Based on theories of rheology and molding sand microdeformation, elastic modulus of molding sand was measured and investigated using the intelligent molding sand multi-property tester developed by ourselves. The measuring principle was introduced. Effects of bentonite percentage and compactibility of the molding sand were experimentally studied. Furthermore, the essential viscoelastic nature of green sand was analyzed. It is considered that viscoelastic deformation of molding sand consists mainly of that of Kelvin Body of clay membrane, and elastic modulus of molding sand depends mainly on that of Kelvin Body which is the elastic component of clay membrane between sands. Elastic modulus can be adopted as one of the property parameters, and can be employed to evaluate the viscoelastic properties of molding sand.
