Abstract:
Disclosed herein is a vacuum insulation material, which includes a barrier film and a core, wherein a rigid body thinner than a reference thickness or a getter harder than a reference hardness is formed between the barrier film and the core, or the rigid body thinner than the reference thickness is formed on the getter formed between the barrier film and the core to ensure surface flatness and surface hardness of the vacuum insulation material.
Abstract:
A light impact unit for an impact assembly and an impact assembly are disclosed. The light impact unit includes an impact portion, a piston element, a transmission element and a driving portion. The impact portion includes a cavity in which the piston element is disposed. The transmission element has a first end and a second end which is opposite to the first end. The first end and the second end are connected to the piston element and the driving portion respectively. Therefore, when the driving portion provides an impact force intermittently through the transmission element to the piston element, the piston element will impact the impact portion and move in a reciprocating motion.
Abstract:
The fragmentation of a bird or similar soft body, following its impact on an angled target plate, is modeled by representing the body as a combination of fragments and slurry, their relative proportions depending on the severity and angle of impact. The method is particularly suitable for modeling the behavior of a bird striking an obscuring intake of a gas turbine engine.
Abstract:
A mouth guard comprises a base member configured to fit inside the mouth of a user, and at least one shock-sensing and indicating device coupled to the base member. In one exemplary embodiment, the shock-sensing and indicating device is a passive shock-sensing and indicating device that detects a shock substantially along a selected axis with respect to the base member. In another exemplary embodiment, the at least one shock-sensing and indicating device detects a shock substantially along a plurality of selected axes with respect to the base member, each selected axis being substantially orthogonal from another selected axis. The shock-sensing and indicating devices can be configured to detect different levels of shock. In one exemplary embodiment, the shock-sensing and indicating device comprises a multi-component chemical-reaction system, such as a chemi-luminescent reaction system.
Abstract:
An impact testing device for a test subject includes a supporting member, a suspending arm with an end fixed on the supporting member, and the other end of the suspending arm being a free end, and a fixing mechanism fixed on the suspending arm adjacent to the free end of the suspending arm to fix the test subject.
Abstract:
An impact test system for collecting hail storm data comprises a vehicle, a video recorder, a container, a plurality of dynamic force sensors, an atmospheric instrument system, a mounting fixture, and a data processing system. The plurality of dynamic force sensors is capable of detecting force generated by an impact of an object. The plurality of markers is capable of being used to determine an orientation of an incoming object. The mounting fixture is capable of holding a test specimen. The data processing system is capable of collecting data from the plurality of dynamic force sensors, the atmospheric instrument system, and the video recorder.
Abstract:
A testing apparatus and method comprising providing a platform for a unit under test, charging a capacitor bank with a charging system, with a switching and power control system generating multiple pulses per cycle from energy from the capacitor bank, and with an electromagnetic force generator receiving pulses from the switching and power control system and directing force at the platform.
Abstract:
A device for investigating a collision between a test body and a physical structure, wherein the device comprises a mounting unit for mounting the test body, an electric drive unit adapted for mechanically driving the mounting unit and the test body mounted thereon, and a control unit adapted for controlling the electric drive unit to accelerate the test body mounted on the mounting unit and for controlling release of the test body from the mounting unit to direct the accelerated test body towards the physical structure for collision, wherein the device is adapted so that the mounting unit and the test body mounted thereon are mechanically driven exclusively by the electric drive unit.
Abstract:
A sled carriage is configured to move in a direction of an axis. A platform is attached with the sled carriage and a sled buck is attached with the platform. Upon acceleration of the sled carriage, the sled buck and platform move relative to the sled carriage.
Abstract:
An impact testing device is provided. The impact testing device comprises a plate and an impact generating module. The plate has a first surface for loading a test object. The impact generating module is fastened to the plate to apply an impact to the plate and actuate the plate along the first direction, the second direction and the third direction independently. Thereby, the impact testing device of this invention is adapted to apply the impact to the test object along any direction under control.