摘要:
A method of making monolithic carbon nanotube heater elements with geometric shape with multiple, complex curvatures is disclosed. The method includes depositing carbon nanotubes on to a forming surface, draining the carbon nanotubes, and drying the carbon nanotubes. Alternatively, the method includes thermoforming carbon nanotube sheets containing thermoplastic binders. The resulting carbon nanotube heater element is a thin, monolithic carbon nanotube heater sheet having a geometric shape with complex curvatures.
摘要:
A method of manufacturing a variable-thickness composite-material casing (100) for a gas turbine, comprises: – using three-dimensional or multi-layer weaving to create a fibrous texture (140) in the form of a strip, – winding the fibrous texture (140) in several superposed layers (141, 142, 143, 144) onto a mandrel having a profile corresponding to that of the casing that is to be manufactured, so as to obtain a fibrous preform of a shape corresponding to that of the casing that is to be manufactured, – densifying the fibrous preform using a matrix. During the winding of the fibrous texture (140) onto the mandrel, a textile strip (150) is interposed between the adjacent turns of the fibrous texture, the textile strip (150) having a width smaller than the width of the fibrous texture (140) and delimiting a retention zone of the casing.
摘要:
Incorporation of functional cloth into prepreg composites A combined prepreg material (10) for use in composite lay-up techniques is described. The material (10) comprises first and second layers (12, 18) impregnated with a matrix material such as a resin. The first layer (12) is a functional layer and the second layer (18) is a keying layer. The keying layer (18) comprises a keying medium to facilitate bonding of the combined prepreg material (10) to a gel coat. The functional layer (12) comprises a woven cloth (14). A circuit is provided on a first surface (16) of the cloth (14).
摘要:
The invention provides a building block for a mechanical construction. The invention further provides a bearing and a method of producing the building block. The building block provides a first printed material printed via an additive manufacturing process on or at least partially embedded in a second material. The first printed material is printed in a pattern configured and constructed for cooperating with a sensor for providing position information of the building block relative to the sensor. The sensor may be a magnetic sensor or an optical sensor. The first printed material may include magnetic particles. The method of producing the building block may include a step of adding the first printed material to the second material via the additive manufacturing process under the influence of a predefined magnetic field.
摘要:
The invention relates to a heating means for an electrically-conductive heating element, which comprises a base substance and, embedded therein, a homogenous mixture of a carbon fibre with a fibre length of between 70 and 180 μm and a fibre diameter of 4 to 15 μm, and dispersed platelet-shaped graphite particles with an average diameter of between 1 and 10 μm. The novel heating means demonstrates surprisingly high heat outputs of up to more than 5000 W/m 2 and is most suitable, together with a flexible base substance such as rubber, for coating similarly flexible basic materials such as fibreglass fabrics.
摘要:
Disclosed herein are methods for manufacturing a functionally graded polymer material. The methods comprise preparing a melted polymer mixture comprising a thermoplastic polymer and a magnetic filler dispersed in the thermoplastic polymer, molding the melted polymer mixture and applying a magnetic field to a portion of the melted polymer mixture to form a functionally graded polymer material. The resulting functionally graded polymer material has a magnetic filler gradient formed through a thickness of the material.