摘要:
Methods for making a composite containment casing having an integrated fragment catcher involving providing a mandrel having a pocket, applying at least one ply of a material about the mandrel in at least the pocket, applying a strip about the material in the pocket to produce an integrated fragment catcher preform, applying at least one ply of the material about the mandrel having the integrated fragment catcher preform to produce a containment casing preform comprising the integrated fragment catcher preform, infusing a resin into the containment casing preform having the integrated fragment catcher preform, curing the containment casing preform to produce the containment casing having the integrated fragment catcher.
摘要:
A method of fabricating a fan containment case for a gas turbine engine is provided. The method includes forming a core layer material, wrapping the core layer material about a cylindrically-shaped take-up spool, and transferring the core layer material to a cylindrically-shaped mandrel by wrapping a plurality of layers of the core layer material about the mandrel such that the mandrel is circumscribed by the layers and such that a size and a cylindrical shape of the fan containment case are defined by the layers of core layer material.
摘要:
Articles including a primary composite structure having a circumference, at least one mounting flange operably connected to the primary composite structure about the circumference, the mounting flange having at least one circumferentially oriented core fiber.
摘要:
A multiaxial high cycle fatigue test system for testing bending, torsion, and tension of a test unit, comprises servo-hydraulic components, including a hydraulic service manifold, two small high frequency actuators along a first axis, and one large main actuator along a second axis The large main actuator is used to apply a radial centrifugal force, and the two small actuators are used to apply vibratory loading; the two small side actuators being offset independently of each other, to enable the machine to apply both bending loads and torque to the test unit. The test unit is subjected to torsion loading when the traverse actuators move in phase, that is when both actuators move either in or out at the same time. The test unit is subjected to bending loading when the actuators move out-of-phase, that is one actuator moves in when the other moves out or vice-versa.
摘要:
Disclosed is a system for queuing elements, such as print jobs. A processing unit receives an element that is associated with a first factor and a second factor, such as data type and a priority within the data type, that indicates a priority of the element. For each first factor and second factor pair, an entry point addresses a point in the queue associated with the first factor and second factor. The processing unit locates an entry point addressing a point in the queue associated with a first factor and second factor that matches the first factor and second factor associated with the received element. The processing unit then inserts the received element in the queue at the entry point.
摘要:
A method, and system employing the method, for service channel reconfiguration at a service outlet includes generating service transaction data of a service outlet, generating queue management system (QMS) data of the service outlet, and generating cost and profit data for the service outlet. Data is extracted from the service transaction data and the QMS data relating to specified parameters including customer experience data, and customer demand data. The service transaction data and the QMS data is integrated with the cost and profit data providing a unified objective function. Stochastic service processes and customer behavior data are modeled. The unified objective function is evaluated using the stochastic service processes and customer behavior data model, and the service channel function of the service outlet is reconfigured using the unified objective function.
摘要:
A computer implemented method for clustering customers includes receiving a source set of customer records, wherein each customer record represents one customer, and each customer record includes at least one data attribute, and each data attribute has an attribute value; pre-processing the source set of customer records to generate a pre-processed set of customer records; executing a clustering algorithm on the pre-processed set of customer records to group the pre-processed set of customer records into clusters of a pre-defined number. The pre-processing comprises: determining the type of a customer in the source set of customer records; using a type attribute value to indicate the type of the customer in its customer record; normalizing data attribute values and type attribute values; weighting to the data attribute values and the type attribute values respectively to obtain weighted attribute values of the data attribute and weighted attribute values of the type attribute.
摘要:
Composite article includes a generally cylindrical body having an internal grid structure interleaved with casing layers formed of reinforcing fibers disposed in a resin matrix. The composite article may be utilized in a fan case containment system for aircraft engine applications. Methods for fabricating the composite article are also provided.
摘要:
Composite containment casing including a body having an interior, an abradable system integrally joined to the interior of the body of the containment casing wherein the abradable system comprises, a sandwich structure including a first facesheet and a second facesheet position about at least one core layer, and at least one abradable layer applied to the sandwich structure wherein the at least one core layer comprises any of a cell configuration, a columnar configuration, or a truss configuration and wherein the sandwich structure is strong radially and weak circumferentially.
摘要:
A method of fabricating a fan containment case for a gas turbine engine is provided. The method includes forming a core layer material, wrapping the core layer material about a cylindrically-shaped take-up spool, and transferring the core layer material to a cylindrically-shaped mandrel by wrapping a plurality of layers of the core layer material about the mandrel such that the mandrel is circumscribed by the layers and such that a size and a cylindrical shape of the fan containment case are defined by the layers of core layer material.