Vibrometrische

Vibrometrische is the adjective form used in German-speaking contexts to denote methods, instruments, or data related to vibrometry, the measurement of vibration. In general, vibrometric techniques quantify how an object moves in time, providing information about displacement, velocity, acceleration, frequency content, and mode shapes. They are typically non-contact and suitable for delicate or rotating systems.

Most vibrometric measurements are optical. Laser Doppler vibrometry uses the Doppler shift of light reflected from a vibrating surface to determine velocity, from which displacement can be derived. Interferometric vibrometry employs interferometers to detect tiny out-of-plane deflections with high sensitivity. Scanning vibrometers extend these approaches to map full-field vibration by moving the laser beam across the surface to build a spatial image of the response. Other techniques include holographic and speckle-interferometry, which can visualize complex vibration patterns.

Applications include mechanical and aerospace engineering, automotive diagnostics, civil engineering, material science, and MEMS characterization. Vibrometric methods support modal analysis, resonance testing, nondestructive testing, and condition monitoring of rotating machinery.

Key considerations include surface reflectivity and roughness, environmental stability, and optical access, which affect signal strength and accuracy. Non-contact vibrometry reduces mass loading and enables online measurements, but may require careful alignment and calibration. The choice of wavelength, instrument sensitivity, and data processing determine achievable frequency ranges and displacement resolution.