Methods and apparatuses are provided for evaluating or testing stiction in Microelectromechanical Systems (MEMS) devices utilizing a mechanized shock pulse generation approach. In one embodiment, the method includes the step or process of loading a MEMS device, such as a multi-axis MEMS accelerometer, into a socket provided on a Device-Under-Test (DUT) board. After loading the MEMS device into the socket, a series of controlled shock pulses is generated and transmitted through the MEMS device utilizing a mechanized test apparatus. The mechanized test apparatus may, for example, repeatedly move the DUT board over a predefined motion path to generate the controlled shock pulses. In certain cases, transverse vibrations may also be directed through the tested MEMS device in conjunction with the shock pulses. An output of the MEMS device is then monitored to determine whether stiction of the MEMS device occurs during each of the series of controlled shock pulses.

Methods and apparatuses are provided for evaluating or testing stiction in Microelectromechanical Systems (MEMS) devices utilizing a mechanized shock pulse generation approach. In one embodiment, the method includes the step or process of loading a MEMS device, such as a multi-axis MEMS accelerometer, into a socket provided on a Device-Under-Test (DUT) board. After loading the MEMS device into the socket, a series of controlled shock pulses is generated and transmitted through the MEMS device utilizing a mechanized test apparatus. The mechanized test apparatus may, for example, repeatedly move the DUT board over a predefined motion path to generate the controlled shock pulses. In certain cases, transverse vibrations may also be directed through the tested MEMS device in conjunction with the shock pulses. An output of the MEMS device is then monitored to determine whether stiction of the MEMS device occurs during each of the series of controlled shock pulses.

A test apparatus includes a stage on which a test object is disposed, a first support part extending in a first direction, a second support part extending in the first direction and spaced apart from the first support part in a second direction crossing the first direction with the stage interposed therebetween, a first height guide part movably coupled with the first support part and extending in a third direction crossing the first direction and the second direction, a second height guide part movably coupled with the second support part and extending in the third direction, a horizontal guide part movably coupled with the first height guide part and the second height guide part, and a falling body providing part movably coupled with the horizontal guide part.

A test apparatus includes a stage on which a test object is disposed, a first support part extending in a first direction, a second support part extending in the first direction and spaced apart from the first support part in a second direction crossing the first direction with the stage interposed therebetween, a first height guide part movably coupled with the first support part and extending in a third direction crossing the first direction and the second direction, a second height guide part movably coupled with the second support part and extending in the third direction, a horizontal guide part movably coupled with the first height guide part and the second height guide part, and a falling body providing part movably coupled with the horizontal guide part.

A testing device for providing realistic response and sensor-driven data for determining the effects of physical loads on the testing devise and the effectiveness of personal protective equipment is disclosed. The testing device includes a body simulating a portion of the human body, and one or more sensors. In some embodiments, the body includes two or more body portions joined to one another. In some embodiments, the body portions may articulate with respect to one another. In some embodiments, the testing device includes an internal frame.

A testing device for providing realistic response and sensor-driven data for determining the effects of physical loads on the testing devise and the effectiveness of personal protective equipment is disclosed. The testing device includes a body simulating a portion of the human body, and one or more sensors. In some embodiments, the body includes two or more body portions joined to one another. In some embodiments, the body portions may articulate with respect to one another. In some embodiments, the testing device includes an internal frame.

According to one embodiment, a structure evaluation system includes an impact imparting unit, a plurality of sensors, a position locator, and an evaluator. The impact imparting unit applies impacts to a second region different from a first region of a structure to which traveling sections of a vehicle, which travels on the structure, apply impacts. The plurality of sensors detect elastic waves generated in the structure. The position locator locates a position of a source of the elastic waves on the basis of the elastic waves detected by each of the plurality of sensors. The evaluator evaluates a deterioration state of the structure on the basis of a position location result of the position locator.

According to one embodiment, a structure evaluation system includes an impact imparting unit, a plurality of sensors, a position locator, and an evaluator. The impact imparting unit applies impacts to a second region different from a first region of a structure to which traveling sections of a vehicle, which travels on the structure, apply impacts. The plurality of sensors detect elastic waves generated in the structure. The position locator locates a position of a source of the elastic waves on the basis of the elastic waves detected by each of the plurality of sensors. The evaluator evaluates a deterioration state of the structure on the basis of a position location result of the position locator.

Disclosed are a projectile and a method of its manufacture for the field of investigating the strength properties of a solid material by application of a mechanical force and more particularly for bird strike tests consisting of a gel including glycerol. A projectile 1 according to the invention may have a central portion 4 of cylindrical shape including a substantially hemispherical portion 2, 3 at each of the ends thereof.

A collision simulation test apparatus including a table to which a test piece is to be attached, the table being movable in a predetermined direction, a toothed belt for transmitting power to drive the table, a drive module capable of driving the toothed belt, and a control part capable of controlling the drive module. The control part is capable of controlling the drive module to generate an impact to be applied to the test piece, and the impact generated by the drive module is transmitted to the table by the toothed belt.