Abstract
THE existing methods for measuring mechanical stresses due to vibrations are (with few exceptions, applicable only in special cases) dependent upon special devices clamped to the structure to be examined. For the purpose of measuring stresses duo to impact near to the point of impact these methods are generally useless, as the measuring device then makes movements relative to the structure, so introducing errors in the stress record. These errors were examined by me in the case of two stress-recorders of the latest types and were found to be of such serious magnitudes that I had to abstain from using this kind of apparatus in my previous investigations1.
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References
A. Bloch, Zur Mechanik des Hemmschuh—Stosses und verwandter Vorgänge des Eisenbahnbetriebes. (Dissertation, Technische Hoch-schule, München. 1933).
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BLOCH, A. New Methods for Measuring Mechanical Stresses at Higher Frequencies. Nature 136, 223–224 (1935). https://doi.org/10.1038/136223b0
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DOI: https://doi.org/10.1038/136223b0
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