Characterization technology

overview

A material that deforms when an external force is applied and returns to its original shape when the force is removed is called an elastic body.
The relationship between this applied force and the amount of deflection is called "spring characteristics", and the coefficient that expresses the magnitude is called the spring constant (k).
The relationship between the applied force (F), the amount of deflection (x), and the spring constant (k) is generally called Hooke's law, and is expressed by the formula "F = kx".

* Hooke's Law (Law of Elasticity): The law that the elongation of a spring and the load below the elastic limit are directly proportional

There are two types of spring characteristics required for anti-vibration rubber: static spring characteristics and dynamic spring characteristics.

Static spring characterization	Relationship between applied force and deflection amount when force is applied slowly to rubber
Dynamic spring characterization	Relationship between applied force and deflection amount when force is applied to rubber at a certain speed

Owned equipment

Static characteristic tester

This is a testing machine that measures and graphs static characteristics such as compression characteristics, tensile characteristics, and hysteresis characteristics. A load-deflection curve is graphed.

Number of cars owned

Maximum load 0.5t: 1 unit
Maximum load 2t: 2 units
Maximum load 5t: 2 units
Maximum load 10t: 2 units

Dynamic property tester

This test system measures the dynamic spring constant and damping characteristics of anti-vibration rubber. Performs dynamic characteristic measurement over a wide frequency range from low to high frequencies. This makes it possible to evaluate the anti-vibration performance up to the high frequency range, which leads to noise countermeasures.

Number of cars owned

Maximum excitation frequency 200Hz: 1 unit
Maximum excitation frequency 300Hz: 1 unit
Maximum excitation frequency 1 kHz: 2 units

Electrodynamic shaker

It is possible to evaluate vibration transmissibility, natural frequency, vibration mode analysis, etc. in the high frequency range of anti-vibration rubber.

Number of vehicles owned: 3

Vertical maximum excitation frequency 5kHz
Horizontal direction maximum excitation frequency 2kHz

Torsional Static/Dynamic Characteristic Tester

・Number of vehicles owned: 2

bolt axial force tester

・Number of vehicles owned: 1