Comparison of different experimental techniques for determination of elastic properties of solids

摘要: Abstract Four different experimental techniques, namely resonant ultrasound spectroscopy (RUS), impulse excitation (IE), nanoindentation (NI) and four-point bending (4PB) test were used to determine the Young’s shear moduli of 99.9% pure Al2O3, 7075 aluminum, 4140 steel Pyrex glass. The results from tests are compared statistically analyzed precision each method estimate significance differences among four techniques. It was found that dynamic methods (RUS IE) have superior repeatability when NI 4PB for all tested materials. also between RUS IE not significant, can be equally successfully determining modulus well-prepared, microstructurally homogenous relatively hard lowest methods.