摘要:
Disclosed herein is a strut assembly 10 comprising a locking device 11 in operative communication with a piston 3, wherein the locking device 11 comprises an active material operative to resist motion of the piston 3 in response to an activation signal. Disclosed herein too is a method of operating a strut assembly 10 comprising displacing a suspended body 60 in mechanical communication with a piston 3; activating an active material in operative communication with the piston 3; and controlling the motion of the suspended body 60.
摘要:
Active pressure relief valves and methods of use for regulating atmospheric conditions within an interior compartment of a vehicle generally include an active material to effect movement of a flap relative to an opening. The active material has the ability to remember its original at least one attribute such as dimension, shape, and/or flexural modulus, which can subsequently be recalled by applying or removing an external stimulus, as will be discussed in detail herein. Suitable active materials include, without limitation, shape memory alloys, ferromagnetic shape memory alloys, shape memory polymers, piezoelectric materials, electroactive polymers, magnetorheological fluids and elastomers, electrorheological fluids, composites of one or more of the foregoing materials with non-active materials, combinations comprising at least one of the foregoing materials, and the like. Depending on the particular active material, the activation signal can take the form of, without limitation, an electric current, a temperature change, a magnetic field, a mechanical loading or stressing, or the like.
摘要:
Disclosed herein is a locking mechanism for positioning or locking an article comprising a housing 3; an optional active element 6 in operative communication with a connecting means 22, wherein the active element 6 and the connecting means 22 are disposed within the housing 3; wherein the active element 6 upon being activated is capable of exerting a force on the connecting means 22; a compression initiation element 4 located within the housing 3, wherein the compression initiation element 4 comprises a shape memory material, and wherein the compression initiation element 4 upon activation facilitates the activation of the active element 6; and a spring stack 8 disposed adjacent to the compression initiation element 4, wherein the spring stack 8 is in operative communication with the compression initiation element 4 and wherein the spring stack 8 is configured to radially expand within the housing 3.
摘要:
Active seal assemblies employing active materials that can be controlled and remotely changed to alter the seal effectiveness, wherein the active seal assemblies actively change modulus properties such as stiffness, shape orientation, and the like. In this manner, in seal applications such as a vehicle door application, door opening and closing efforts can be minimized yet seal effectiveness can be maximized.
摘要:
Vehicle air dams that include an airflow control member and an active material based actuator for deploying the airflow control member so as to change airflow about the vehicle.
摘要:
A haptic alert system generally includes an active material based actuator for providing the haptic alert. The active material based actuators refer to the use of several different classes of active materials all of which exhibit a change in at least one attribute such as dimension, shape, and/or flexural modulus when subjected to at least one of many different types of applied activation signals, examples of such signals being thermal, electrical, magnetic, stress, and the like.
摘要:
A method for identifying available parking spaces. The method includes receiving data about a parking space from a vehicle, the data including a geographic indicator associated with the parking space. The data is stored in a database of available parking spaces. A geographic location is received from a parking space requestor. The database is searched for an available parking space within a proximity of the geographic location. If an available parking space within a proximity of the geographic location is located in the database, a geographic indicator associated with the available parking space is transmitted to the parking space requester.
摘要:
A system and method for enhancing situation awareness of a vehicle operator is disclosed. Object data corresponding to objects detected within a region external to the vehicle are determined from radar, imaging, GPS, and vehicle-to-vehicle communication systems. A three-dimensional visualization of the region is rendered on a visual display based on the object data including representations of detected objects and the vehicle from a viewpoint perspective that is remote from the vehicle.
摘要:
A volume-filling mechanical structure comprising a honeycomb celled material expandable from a compact state to an expanded state and methods for operating the same.
摘要:
Reconfigurable structures include at least one hub, a plurality of arms attached to and extending from the at least one hub, wherein at least a portion of the arm and/or hub defines a node and is formed of an active material. The active material is adapted to change at least one attribute in response to an activation signal, wherein the change in the at least one attribute changes a modulus property, a shape orientation, or a combination of the modulus property change and the shape orientation change to the active material portion. The plurality of arms and at least one hub can form a reconfigurable opening for attaching and releasing a member. Alternatively, the plurality of arms and/or hub can further include a connector for attaching an additional structure. Also disclosed herein are methods for selectively reconfiguring a structure.