摘要:
A method of operating a volume-filling structure, comprising sensing an impact event and expanding the volume-filling structure from a non-expanded state to an expanded state upon the sensed impact event. The volume-filling structure comprises an open celled material, a first end cap connected to one end of the open celled material and a second end cap connected to a second end of the open celled material. The volume-filling structure further includes an activation mechanism regulating expansion of the open celled material from the non-expanded state to expanded state in response to an activation signal, and the activation mechanism includes an actuator interfaced with the end caps. Embodiments may include triggering a pneumatic device to force the second end cap from the first end cap. Additionally, embodiments may include triggering a mechanical event to force the second end cap from the first end cap.
摘要:
A method of operating a volume-filling structure, comprising sensing an impact event and expanding the volume-filling structure from a non-expanded state to an expanded state upon the sensed impact event. The volume-filling structure comprises an open celled material, a first end cap connected to one end of the open celled material and a second end cap connected to a second end of the open celled material. The volume-filling structure further includes an activation mechanism regulating expansion of the open celled material from the non-expanded state to expanded state in response to an activation signal, and the activation mechanism includes an actuator interfaced with the end caps. Embodiments may include triggering a pneumatic device to force the second end cap from the first end cap. Additionally, embodiments may include triggering a mechanical event to force the second end cap from the first end cap.
摘要:
A volume-filling mechanical structure for modifying a crash or impact comprising a honeycomb celled material expandable from a compact state to a expanded state and methods for operating the same.
摘要:
Impact absorbing padding includes a unitary piece including a polymeric material commingled with a structural element. The polymeric material includes a material having a first temperature-responsive stiffness, and the structural element includes an element fabricated from a shape memory alloy formulated to have a second temperature-responsive stiffness that is converse to the first temperature-responsive stiffness.
摘要:
Impact absorbing padding includes a unitary piece including a polymeric material comingled with a structural element. The polymeric material includes a material having a first temperature-responsive stiffness, and the structural element includes an element fabricated from a shape memory alloy formulated to have a second temperature-responsive stiffness that is converse to the first temperature-responsive stiffness.
摘要:
A vehicle wiper assembly includes a wiper blade having a length, and an active material disposed along the length of the wiper blade and coupled thereto. The active material includes a shape memory alloy material with a crystallographic phase that is changeable between austenite and martensite, and is elastically deformable and operatively applies a spring force against a portion of the wiper blade when the crystallographic phase is martensite.
摘要:
A wiper assembly includes a wiper blade having a length and an active material actuator provided along a portion of the length of the wiper blade and coupled thereto. The active material actuator is configured to impart a degree of motion to a portion of the wiper blade in response to an electrical actuation signal.
摘要:
A drain plug assembly that has particular application for sealing a drain hole in a high voltage battery compartment on a vehicle. The plug assembly includes a plug that inserted into the drain hole. The plug assembly further includes a return spring coupled to the plug and causing the plug to be biased into the drain hole. The plug assembly also includes at least one shape memory alloy device coupled to the plug and a support structure. The SMA device receives an electrical current that causes the device to contract and move the plug out of the drain hole against the bias of the return spring.
摘要:
A drain plug assembly that has particular application for sealing a drain hole in a high voltage battery compartment on a vehicle. The plug assembly includes a plug that inserted into the drain hole. The plug assembly further includes a return spring coupled to the plug and causing the plug to be biased into the drain hole. The plug assembly also includes at least one shape memory alloy device coupled to the plug and a support structure. The SMA device receives an electrical current that causes the device to contract and move the plug out of the drain hole against the bias of the return spring.
摘要:
A device is provided that may be adapted to control or monitor the pressure level of a fluid system. The device includes a member composed of a shape memory alloy in a superelastic state. The member is configured to undergo a phase change from a high modulus Austenitic phase to a low modulus Martensitic phase and stretch in response to an activation stress. In one embodiment, the member defines two ends such that one end of the member is operatively connected to a fixed point. Another end of the member is operatively connected to a movable element. As the member stretches in response to the activation stress, the movable element is translated relative to the fixed point. In another embodiment, the member includes two plates with respective holes that are selectively aligned when the first and second plates stretch or deform in response to the activation stress.