Page 10 - Shimadzu HITS-X Series

HPV-X2 & HITS X Series Visualization and Strain Measurement

Analyzing Strain Distribution Using a 10 Million Frame-per-Second
Ultra High-Speed Camera and a DIC Data Analysis System
Verifying material characteristics to ensure dynamic safety during composite material
development requires not only static strength testing, but also understanding the impact
fracture strength and the fracture process. Using an HPV-X2 high-speed video camera in
combination with a Hydroshot HITS series high-speed tensile impact testing machine allows
observation of the high-speed failure behavior with high time resolution.

HyperVision HPV-X2
To start the high-speed video recording, the system uses an external trigger mechanism, where the testing machine sends a video start signal synchronized with
the tensile load to the camera. Strobe lighting is also synchronized with the video timing. Combining a high-speed video camera and impact testing machine
makes it possible to evaluate material impact properties and observe fracture behavior at the same time. This allows a multifaceted evaluation of the complicated
failure behavior of composite materials.

Camera Trigger

High-Speed Video Camera
Hyper Vision HPV-X2
Light Source: Strobe Light

Captured Images

Test Force Data
High-Speed Tensile Testing Machine
HITS X

Example of High-Speed Tensile Testing of Multilayered Porous CFRP Material

Fracture Images

DIC Data Analysis

This shows a series of representative fracture images, arranged in chronological order. The images were acquired at 500,000 frames per second, from the start of the test
until the sample failed. The acquired fracture images were processed by digital image correction (DIC) data processing to generate a 2D map of the strain distribution
generated across the sample. The strain magnitude is represented with colors ranging from blue to red, where the warmer the color the greater the sample strain level.

References: H.Kusano, et al., “The experimental comparison of the strain measurement
techniques on tensile test", ECCM-15, We.2.8.3, Venice, Italy, 24-28 June 2012

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