The Use of the Laser Vibrometer as an Alternative to Strain Gauges to Measure Bending Strain

N. S. Ferguson; J. B. Carpentier

doi:10.1117/12.952920

31 July 1989 The Use of the Laser Vibrometer as an Alternative to Strain Gauges to Measure Bending Strain

N. S. Ferguson, J. B. Carpentier

Proceedings Volume 1084, Stress and Vibration: Recent Developments in Industrial Measurement and Analysis; (1989) https://doi.org/10.1117/12.952920
Event: Sira/Stress and Vibration: Recent Developments in Measurement and Analysis, 1989, London, United Kingdom

Abstract

An alternative to strain gauge technology is proposed using the adoption of a laser vibrometer to measure dynamic surface response. This data can then be applied to evaluate the bending strain in the structure. The simple theory is presented for beams and plates undergoing discrete frequency harmonic motion and random vibration. The sources of errors are analysed and a judgement on the method is given for future applications.

Citation Download Citation

N. S. Ferguson and J. B. Carpentier "The Use of the Laser Vibrometer as an Alternative to Strain Gauges to Measure Bending Strain", Proc. SPIE 1084, Stress and Vibration: Recent Developments in Industrial Measurement and Analysis, (31 July 1989); https://doi.org/10.1117/12.952920

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