Overview of Resonance Method

In resonant testing, a specimen is vibrated using minute vibrations to precisely measure its natural frequency. This enables highly accurate determination of elastic moduli such as Young’s modulus and shear modulus. Please see below for the measurement methods, temperature ranges, material types, and sample geometries we can accommodate. We also flexibly support measurements that involve special development elements not described here. Please feel free to contact us with any questions or consultation requests.

Measurement Method	・Free resonance method ・Cantilever resonance method ・Longitudinal resonance method ・Resonant ultrasound spectroscopy（RUS）・Electromagnetic acoustic resonance（EMAR）

Temperature Range	・100 K to 500 K（-LHT）・Room temperature (-RT) ・Room temperature to max. 1470 K (-HT)

Measurement Items	・Elastic moduli（Young’s modulus, shear modulus, Poisson’s ratio）・Elastic constants＝Elastic stiffness＝Cij ・Internal friction ＝ Viscoelastic modulus ＝ Tangent Delta（tanδ）≒ Damping capacity ≒ Logarithmic decrement ≒ ・Fatigue testing

Measured Materials	・Metals ・Ceramics ・Polymers ・Glass ・Bricks ・Carbon materials ・Concrete ・Wood

Sample Geometry	・Wire ・Cylinder ・Foil ・Thin plate ・Cube ・Rectangular

PRODUCTS

Product Lineup

Based on our expertise and knowledge in resonance and vibration technologies, we provide equipment that enables optimal measurement tailored to the customer’s target material and intended application. We also offer contract testing services using devices not listed here and the fabrication of custom equipment. Please feel free to contact us for consultation.

Elastic Modulus /Internal Friction Measurement Device

JE Series

Young’s modulus and internal friction measurement device

JG Series

Shear modulus and internal friction measurement device

EG Series

Simultaneous measurement device for Young’s modulus, shear modulus, Poisson’s ratio and internal friction

TE Series

For thin plate and wire: Young’s modulus measurement device

IE Series

For thin plate and wire: Young’s modulus measurement device

VE Series

For medium samples and graphite materials: Longitudinal resonance-type Young’s modulus measurement device

CCI Series

RUS elastic constant measurement device

CCII Series

EMAR elastic constant measurement device

Resonance Fatigue Testing Device

RF Series

For thin plate and wire: Resonance fatigue testing device

View RF Series details

TEST SERVICE

Specimen, Fixtures, and Equipment Fabrication

KMTL also supports the production of test specimens and various equipment required for testing and analysis, providing comprehensive support for material testing

Test Specimen Preparation

Sophisticated Machining Skills

Sampling and Machining Miniature Test Specimens

Equipment Development

Electric Discharge Sampling Equipment

Molding/Machining/Wet Heat Aging of Plastic Specimens

Heat Treatment

Small Punch Creep Testing Equipment

Resonance Method