Abstract:
Honeycomb bodies and methods for treating a honeycomb bodies that include a skin surrounding a matrix of cells, the skin and the matrix of cells comprising a porous inorganic material. Methods include applying a buffer solution to only the porous inorganic material of the skin and coating the porous inorganic material of the skin with an oxide slurry. The oxide slurry includes an oxide or a precursor of the oxide configured to increase the isostatic strength of the honeycomb body. After treatment, the honeycomb body may be dried.
Abstract:
Systems and methods for rapid drying of ceramic greenwares having a high graphite content are disclosed. The methods include employing microwave drying to bring the dryness of the ceramic greenware to a first select dryness and then employing close-coupled hot-air drying to bring the dryness to the final target dryness. The judicious use of close-coupled hot-air drying reduces end defects due to unevenness in the microwave drying process while also substantially speeding up the drying process. Various configurations for and combinations of microwave drying and close-coupled hot-air drying are disclosed.
Abstract:
Components, systems, and methods for reducing location-dependent destructive interference in distributed antenna systems operating in multiple-input, multiple-output (MIMO) configuration are disclosed. Interference is defined as issues with received MIMO communications signals that can cause a MIMO algorithm to not be able to solve a channel matrix for MIMO communications signals received by MIMO receivers in client devices. These issues may be caused by lack of separation (i.e., phase, amplitude) in the received MIMO communications signals. Thus, to provide amplitude separation of received MIMO communications signals, multiple MIMO transmitters are each configured to employ multiple transmitter antennas, which are each configured to transmit in different polarization states. In certain embodiments, one of the MIMO communications signals is amplitude adjusted in one of the polarization states to provide amplitude separation between received MIMO communications signals. In other embodiments, multiple transmitter antennas in a MIMO transmitter can be offset to provide amplitude separation.
Abstract:
Disclosed is a ceramic honeycomb structure comprising a honeycomb body and a multilayered outer layer formed of a thick core layer applied and rapidly dried and a thin clad layer dried more gently to form a crack free dual skin layer. The core layer may have properties that are closer to those of the ceramic honeycomb body in service than the clad layer that may provide a tough outer shell to withstand handling and assembly.
Abstract:
Systems and methods for drying skinned ceramic wares (10) using recycled microwave radiation are disclosed. The method includes irradiating wet skinned ceramic wares (10W) in a first applicator section (124W) with microwave radiation (212), wherein said irradiating (212) gives rise to reflected microwave radiation (212R). The method also includes capturing a portion of the reflected microwave radiation (212R) and irradiating a plurality of semi-dry skinned ceramic wares (105) in a second applicator section (124S) with the reflected microwave radiation (212R). Systems for carrying out the method are also disclosed.
Abstract:
Components, systems, and methods for reducing location-dependent destructive interference in distributed antenna systems operating in multiple-input, multiple-output (MIMO) configuration are disclosed. Interference is defined as issues with received MIMO communications signals that can cause a MIMO algorithm to not be able to solve a channel matrix for MIMO communications signals received by MIMO receivers in client devices. These issues may be caused by lack of separation (i.e., phase, amplitude) in the received MIMO communications signals. Thus, to provide amplitude separation of received MIMO communications signals, multiple MIMO transmitters are each configured to employ multiple transmitter antennas, which are each configured to transmit in different polarization states. In certain embodiments, one of the MIMO communications signals is amplitude adjusted in one of the polarization states to provide amplitude separation between received MIMO communications signals. In other embodiments, multiple transmitter antennas in a MIMO transmitter can be offset to provide amplitude separation.
Abstract:
A method and system to dry crack-free and high strength skin including an inorganic binder of an average particle size (D50) in a range between 10 nm and 700 nm on a porous ceramic body. The method includes supporting the honeycomb body on an end face such that axial channels and outer periphery are substantially vertical. A gas is flowed past the honeycomb body substantially parallel to the axial channel direction, substantially equally around the outer periphery of the skin, to uniformly dry the skin to form a partially dried skin under mild conditions. Then the partially dried skin may be dried more severely resulting in rapidly dried crack-free and high strength skin.
Abstract:
Exhaust gas treatment articles and methods of manufacturing the same are disclosed herein. An exhaust gas treatment article includes a porous ceramic honeycomb body with multiple channel walls defining cell channels that extend in an axial direction and an outer peripheral surface that extends in the axial direction. The exhaust gas treatment article further includes a metal layer that surrounds the porous ceramic honeycomb body and that is in direct contact with at least a portion of the outer peripheral surface of the porous ceramic honeycomb body. The metal layer includes a joint. The exhaust gas treatment article includes a shim that is located under the joint and that is in direct contact with at least a portion of the outer peripheral surface of the porous ceramic honeycomb body.
Abstract:
Systems and methods for rapid drying of ceramic greenwares having a high graphite content are disclosed. The methods include employing microwave drying to bring the dryness of the ceramic greenware to a first select dryness and then employing close-coupled hot-air drying to bring the dryness to the final target dryness. The judicious use of close-coupled hot-air drying reduces end defects due to unevenness in the microwave drying process while also substantially speeding up the drying process. Various configurations for and combinations of microwave drying and close-coupled hot-air drying are disclosed.
Abstract:
Systems for and methods of drying a wet skin of a wet skinned ceramic ware are disclosed. The wet skinned ceramic ware includes a dry interior web with an outer surface. The wet skin is disposed on the outer surface of the dry interior web. The method includes generating an airstream and then directing the airstream through a first end of the wet-skinned ceramic ware only through an annular portion of the interior web that is adjacent the outer surface of the interior web. The flow of the airstream through the annular portion of the interior web causes moisture in the wet skin to migrate inwardly toward the interior web. The moisture is removed from the annular portion of the interior web when the airstream exits a second end of the ceramic ware, thereby drying the skin from the inside out of the wet-skinned ceramic ware.