Titlebook: Shock & Vibration, Aircraft/Aerospace, and Energy Harvesting, Volume 9; Proceedings of the 3 Alfred Wicks Conference proceedings 2015 The S

CON

Estimation of Amplitude-Dependent Resonance and Damping in MEMS Shock Accelerometers, is commonly provided by manufacturers, the estimated properties are typically obtained at levels below the full range of the sensor. Using high bandwidth operating data of varying amplitudes, the damping ratio and principle resonant frequency of shock accelerometers are estimated using a simple dyn

infantile

Development of a Mapping Function for a Low- to High-Amplitude Input,rum from low (10 Hz) to high (10 kHz) at different forcing levels. When a linear Frequency Response Function exists we would expect that we can design a multiple input test to achieve a desired output response based on superposition of the single input modal response of the test structure. Experimen

dry-eye

Experimental Study of Glass Fiber Reinforced Polyester Under Repeated Impacts,using a specially designed repeated impact testing machine, which utilizes a pneumatic system to apply the loads, and a data acquisition system to directly measure the number of impacts and deflections of the specimens. Calibration results of the device are reported and a comparison is carried out b

Commodious

上流社会

Halfhearted

Albinism

Case Study: Modeling Generator Chassis Responses with ODS Data,he generator chassis with finite elements and applying generator set measured acceleration values as inputs for a harmonic forced vibration analysis. The underlying idea of this approach is to capture the complex excitation function via experimental data on a subsystem that is relatively linear. Var

妨碍议事

Shock Calibration with Zero Shift Using a Digital Filter Technique,milliseconds was developed. However, a piezoelectric accelerometer output voltage with zero shift was induced by the low-frequency response of the charge amplifier. So we designed a virtual amplifier with infinite impulse response filters as a digital replica of the charge amplifier. Since the virtu

Impugn

Mechanical Shock Environment Synthesis for Structural Failure Elicitation,s impacts or pyrotechnic shocks. Oftentimes, the service environment to which a structure will be exposed is difficult to reproduce in the laboratory, but design engineers desire a laboratory screening test to determine whether the structure will survive an anticipated shock environment. Herein, a c

统治人类

Estimation of Amplitude-Dependent Resonance and Damping in MEMS Shock Accelerometers,amic model. While the resonance is shown to be essentially amplitude-invariant, the damping ratio is shown to vary with the excitation amplitude. Possible causes related to the frequency content of the excitation and the presence of repeated roots are discussed.