How does video extensometer work?
How does video extensometer work? Video extensometry incorporates a high-resolution digital camera with advanced real-time image processing to make highly precise strain measurements of a variety of specimen types. The video camera captures the image, which is transferred via an IEEE 1394 (Firewire) interface to a PC or laptop computer. Why is extensometer more accurate? Contact-type Measurement Extensometers The mechanical parts that transfer extension, via knife edges, from the specimen to the internal transducer are short and stiff. There is practically no relative movement between the specimen and the extensometer, resulting in a high level of measurement accuracy. What is...