What Is Strain?

"Strain" is the amount of deformation
that an object stretches or contracts

under an external force.

History of Strain Measurement

1833

Research and development that became
the origin of strain measurement technology

A circuit for measuring electrical resistance, which is the principle of strain gauges (measuring devices), was invented in England

Samuel Hunter Christie
Source: Wikipedia, The Free Encyclopedia

1938

First commercialization of strain gauge

In the United States, a measuring instrument was developed for military use. It was used for B-29 wing shape monitoring.

1950s

Development of strain gauges in Japan

Strain gauge was used to measure the strength of structures in two industries such as ships and railways.

1958

Application in the construction of Tokyo Tower

Strain measurement was applied to vibration measurement of Tokyo Tower and stress measurement of the foundation of the building.

Issues Related to Conventional "Strain" Measurement

Conventional measurement methods
have the following problems.

  • Requires external amplifier
  • Sensitive to disturbance noise
  • Highly dependent on temperature
  • High power consumption
  • Aging degradation of resin parts

Not suitable for embedded applications
because the system was too extensive.

STREAL solves the problem!