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The Gibitre instrument for temperature-controlled fatigue testing combines automatic image recording with Artificial Intelligence to automatically detect the onset of cracking. It is the ideal choice among material testing instruments when it is necessary to rigorously document the progression of damage during bending.
The integrated climate chamber operates from −40 to +200 °C, with on-board cooling, while the opposing specimen holder mechanism reduces noise and vibrations during testing. The 12-position specimen holder allows for simultaneous testing; frequency (0–300 rpm), stroke (0–60 mm), jaw distance (up to 100 mm), and number of cycles (up to 10,000,000) are adjustable to tailor the test.
Six high-resolution cameras, synchronized with the deformation, record the bending area of the 12 specimens without interrupting the test. The software on the 15-inch touchscreen displays images at the desired frequency, applies the AI algorithm for crack detection, and automatically generates a video showing the number of cycles; data can be downloaded via USB or network.
The instrument is CE marked and is suitable for fatigue and bending tests in accordance with ISO 132, ISO 6943, ASTM D430-B, and ASTM D813.
This revolutionary Flexometer De Mattia, equipped with Climatic Camera for performing temperature-controlled tests and 6 Video Cameras for capturing and analyzing images of the 12 specimens produces as an automatic test result a Video of the progressive degradation of the specimen during the entire test cycle.
The instrument, which captures images without interrupting operation, dramatically reduces the testing time by eliminating all the interruptions and manual tasks that are normally required to evaluate the status of specimens.
The video and images produced make it possible to objectively document the results of the testing, allowing analyzing crack evolution in extreme detail.
The instrument allows all test parameters to be set at the beginning of the test:
Oscillation frequency (0 ÷ 300 rpm)
Stroke (0 ÷ 60 mm)
Test temperature (-40 ÷ +200°C)
Total number of cycles (max 10,000,000)
Test modes (Fatigue, Crack Growth)
Illumination of the specimens
Identification of the 12 specimens
Frequency of image acquisition
To perform the test, simply insert the 12 specimens into the instrument, and press start.
The instrument automatically adjusts the temperature and following thermal conditioning begins the test cycle by recording images of each specimen without stopping the oscillation until the total number of cycles set is reached.
The Artificial Intelligence algorithm analyzes all images to determine the presence of cracks (Fatigue Test) or crack size (Crack Growth Test)
At the end of the test, all images for each specimen are automatically edited into a video that includes useful information (Number of Cycles, Crack Presence/Size, Temperature). Videos of the 12 specimens are downloadable via USB or LAN port.
The sample holding system is located in a Environmental chamber which permits to set the temperature between -40°C and 200 °C.
The instrument is equipped with 6 BW video cameras with a resolution of 600x450 pixels that allow you to simultaneously acquire the images of all 12 mounted specimens (each video camera acquires the image of 2 specimens).
A LED lighting device has been developed which guarantees the correct illumination of the specimens and, in combination with the software setting of the exposure of the cameras, allows to obtain optimal images for specimens of various colors.
Image acquisition and lighting are synchronized with the movement of the specimen to always acquire the image in the same position (settable) without interrupting the operation of the instrument
The frequencies of acquisition and saving of the images before the crack is identified and after its identification can be set by the user based on the characteristics of the product to be tested (minimum frequency per sample 20 seconds)
The complete control of the instrument is carried out through the powerful software installed in the PC inside the machine and through the 15 '' touch-screen control panel.
The software allows you to:
- Set the frequency, the temperature and the number of cycles to be carried out
- Identify the 12 specimens
- Record the images of each of the 12 samples with set frequency
- Analyze images with Artificial Intelligence algorithm for automatic detection of the crack start
- Perform a slide-show of the images recorded for each sample
- Download the images via USB port to an external support
The images related to each specimen are saved in the internal memory of the device (up to 10,000 images can be stored)
The software allows you to view all the images related to each specimen in sequence
The name with which each image is saved includes the position, the identification, the number of cycles performed at the time of setting, the presence of crack.
The analysis algorithm analyzes all images to identify the presence of cracks.
The algorithm was educated in acquiring images of specimens with different colors and polymers.
When the algorithm identifies the presence of a crack, the software records the number of cycles at which the crack identification occurred and automatically changes the image saving rate based on the settings.
The management of thousands of images for each sample requires time and memory for storage.
The software of the instrument automatically produces a movie for each sample using the images stored. The movie shows the evolution of the sample and the corresponding number of cycles. The movies can be downloaded to USB of using network connection.
The sample holder permits to test 12 samples simultaneously.
The exclusive movement system with both sample holders moving in opposite directions ensures extremely low levels of noise and vibrations.
According to test specification, the instrument can be easily adjusted by setting
• Test frequency (60 to 300 rpm)
• Test stroke (0 to 60 mm)
• The distance of the grips (up to 100 mm)
• The number of cycles before automatic stop can be set (up to 1.000.000)
The instrument produced by Gibitre uses a Refrigeration Unit to reduce the temperature.
The use of the refrigeration unit, compared to cooling by liquid nitrogen, allows to:
• control the test temperature perfectly, avoiding oscillations that may alter the results.
• Carry out long-term tests without risking to end the liquid nitrogen supply before finishing the test
• Eliminate the hazards related with manipulation of nitrogen
Mould for De Mattia dynamic tester according to ISO 132, ASTM D 430-method B, DIN 53 522 standards.
The piercing tool allows to realize the standard notch to carry out crack-growth tests.
The instrument is totally developed and produced in the plant of Gibitre Instruments in Italy.
All the mechanical parts are produced in the company workshop using modern CNC machines.
Components and sensors from well-known brands are selected in order to ensure the maximum reliability in the measures
Internal trained personnel takes care of all the production stages: assembly, start-up, calibration, packing, shipment and installation.
The calibration is performed with reference to the requirements of ISO 132 standard.
The service includes:
• Ordinary maintenance of the instrument
• Calibration of the oscillation speed.
• Calibration of the dimension of the templates.
• Calibration of the temperature inside the environmental chamber at 4 temperatures (for flexometers with environmental Chamber)
• Issue and e-mail shipment of the Calibration Certificate with traceability to primary standards.
• Safety protection doors fitted with safety switch.
• Safety Push-button
• Digital Motor controller with torque overload control.
• CE labelling
• De Mattia Test for Fatigue & Crack-Growth
• Fatigue Test in Traction
• 12-position test holder
• Testing in Temperature between -40°C and 200°C
• 6 Video Cameras for Automatic Image Acquisition
• Image analysis using Artificial Intelligence
• Fatigue Test: Auto-Detection of the presence of cracks
• Crack Growth Test: Auto-Measurement of Crack size
• Automatic generation of movies for 12 samples
• Excel file for Crack Size-Cycles.
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