A simple method of measuring the dynamic Young's modulus of concrete
J P A Lochner; W de V Keet; J P A Lochner; National Physical Laboratory, South African Council for Scientific and Industrial Research, Pretoria, South Africa; W de V Keet; National Physical Laboratory, South African Council for Scientific and Industrial Research, Pretoria, South Africa
Журнал:
Journal of Scientific Instruments
Дата:
1955-08-01
Аннотация:
The dynamic Young's modulus of elasticity E of solids can conveniently be determined from the fundamental transverse frequency of bars. This article describes a very simple device, consisting of a calibrated adjustable Helmholtz resonator, the resonance of which can be observed by means of a stethoscope, for measuring the natural transverse frequency of a rod struck with a small hammer.
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