Extensometers & Deflectometers

An extensometer is a device used to measure the length of an object. It is typically used in engineering and medicine to measure the deformation of materials or tissues. Extensometers can be either mechanical or optical.

Mechanical extensometers use a strain gauge to measure the change in length of an object. The strain gauge is a small, sensitive device that changes its resistance when it is stretched or compressed. The change in resistance is then used to calculate the change in length of the object.

Optical extensometers use a laser to measure the change in length of an object. The laser is shines a beam of light onto the object, and the change in the distance between the laser and the object is used to calculate the change in length.

Extensometers are used in a variety of applications, including:

• Measuring the deformation of materials under stress
• Measuring the growth of tissues
• Measuring the progress of a surgical procedure
• Calibrating other measuring devices
• Extensometers are an important tool for engineers, doctors, and scientists who need to measure the change in length of an object. They are accurate, reliable, and easy to use.

Here are some of the benefits of using an extensometer:

• They are accurate and reliable.
• They are easy to use.
• They can be used in a variety of applications.

Here are some of the limitations of using an extensometer:

• They can be expensive.
• They can be fragile.
• They can be difficult to calibrate.

Overall, extensometers are a valuable tool for measuring the change in length of an object. They are accurate, reliable, and easy to use. However, they can be expensive and fragile.