The present invention relates to an apparatus for simultaneously measuring the Young's modulus, the transverse elastic modulus, and the Young's modulus, and more particularly to a frequency generator 10 for generating an oscillating frequency; A voltage / current converter (20) for amplifying a current; An input coil 30a for applying a magnetic field to the measurement specimen, a crystalline magnetic material 30b for generating stress in two or three axes by the self-elastic effect and transmitting these stresses to the test specimen, A modulus of elasticity measuring sensor 30 configured of a probe coil 30c for measuring a resonance frequency due to the effect of coupling the specimen; A lock-in amplifier 40 for measuring a signal induced in the probe coil 30c; And a computer 50 for controlling the probe coil 30c and the lock-in amplifier 40. The present invention is characterized in that the precision is higher than that of the conventional method, and the Young's modulus, the transverse elastic modulus, the longitudinal modulus And can obtain accurate elastic moduli from these results. Compared with the conventional ultrasonic measurement method and the method using an Instron, the measurement equipment is not only inexpensive, but also has high accuracy, so that the elastic modulus and the elastic modulus , And research on changes in mechanical properties of materials.
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