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Crash Testing with AOS High Speed Cameras

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The AOS high speed camera range has for years been used as part of crash testing around the world. Their newest range of camera offers incredible resolution at high speed meaning that they are able to capture even more detail at a higher frame rate.

The below sequence of videos showcases the range of cameras used in a crash test of a truck, filmed at 80km/h.

Truck hitting congested cars 80km/h filmed with AOS L-Pri @ 2500/fps. Footage provided by AOS Technologies

Truck hitting congested cars 80km/h filmed with AOS M-Pri @ 1200/fps. Footage provided by AOS Technologies

Wide angle of truck hitting congested cars 80km/h filmed with AOS L-Vit @ 1000/fps in full HD. Footage provided by AOS Technologies

 

Tire Inspection with Thermography

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Mechanically stressed car components like tires are a continuous issue for quality inspection and related R&D improvements. At Bridgestone Corporation in Hofu (Yamaguchi prefecture in South- Western Japan) new test procedures for off-the-road tires for construction and mining vehicles (OR tires) had to be developed to meet the literally growing scale of performance concerning the carrying capacity.

Huge dump trucks like a Komatsu 960E-1K can carry more than 300 tons of mine rock. When this monster moves on stony soil for many hours a day the workload on those tires is enormous. The long-term tests realised by Bridgestone run in different factories and include parallel inside and outside thermal inspections. The inside inspections are accomplished after several holes have been drilled into the tires carcass, while the outside measurements concentrate on external peripheral structures.

To allow a precise measurement during different rotation speed settings a very exact triggering interface for the infrared camera is required – no problem for an ImageIR® 8325. Utilising its nanosecond precision trigger interface the high precision camera collect data with a temperature resolution of 20 mK, very short integration times in the microsecond range and extreme high frame rates.

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Article Produced by Infratec in conjunction with Bridgstone Corporation

Active Thermography and IR cameras

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IR Camera Range

Active thermography is the induction of a heat flow by energetically exciting a test object. The heat and the flow of energy is then influenced by defects or material layers which makes it a great application for materiel testing. These inhomogeneities can be sen on the surface by high-precision infrared cameras such as our ImageIR and Variocam range.

 

Our range of cooled IR cameras are perfect for any active thermography application within the engineering, health or automotive industries. The cooled cameras allow for a more accurate temperature measurement at a higher resolution. The range of thermal cameras has geometric resolutions of up to (1,280 x 1,024) IR pixels and thermal resolutions far below 0.015 K. As well as this, there is optional high temperature calibrations allowing the measurement of materials such as metal and others with high heat conductivity

 

IR Software

The thermography software IRBIS® 3 active analyses the thermo-graphic sequences, which have been generated during the test, and edits them to create a false colour image, in which defects can be marked for further evaluation or documentation. For this purpose, several different analysis procedures are available. The choice of the correct algorithm depends on the material characteristics, geometry and type of defects to be detected.

While the quotient method investigates the heat flow of the test object by reference to the increase and decrease of the surface temperature, the pulse-phase thermography (PPT) relies on the analysis of the temperature profile of different frequencies. For each frequency, two event images are generated, one amplitude- and one phase image. The lock-in thermography (LIT) analyses the sequence of periodic excitation of the test object.

Application of Active Thermography]

Active thermography has a number of applications, however is mainly used in manufacturing and material testing. Some specific applications include:

  • Detection of layer structures, delaminations and inserts in plastics
  • Detection in CFRPs of the automotive and aerospace industry
  • Investigation of interior structures or impacts on honeycomb lightweight constructions
  • Recognition of deeper material deficiencies, such as blowholes in plastic parts or ruptured laser welding seams

Introducing Infratec

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Blink Technology now has access to some of the top of the line thermal detection cameras and software. With our partners at Infratec, we will be able to put together an out of the box or turnkey solution to suit your needs. Thermal imaging cameras can be used across a wide range of industries  including:

  • Aerospace
  • Automotive
  • Chemical
  • Electronics
  • Environmental
  • Glass
  • Medicine
  • Plastics

Applications of thermal cameras  are also widely varied with applications including aerial thermography, high speed thermography, micro thermography and many more. Blink’s expertise in high end imaging helps us to put together a package to suit your needs.

The FASTCAM NOVA

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The FASTCAM NOVA brings together unique CMOS image sensor technologies and extensive high-speed digital imaging expertise to provide a camera with the flexibility to be used in a wide variety of applications. Available in three different models, the NOVA offers 12-bit image recording rates up to 12,800 frames per second (fps) at megapixel image resolution, and shutter speeds to less than 300ns. Recording rates to 1,000,000fps are available at reduced image resolutions.  All of this available from a camera that is rugged, compact, lightweight and provides the best light sensitivity in its class.

 

VIC – 3D EDU System

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The VIC-3D Educational (EDU) System is a low-cost solution developed for academic institutions to assist in teaching the Digital Image Correlation technique to undergraduate and graduate students. The VIC-3D EDU system utilizes the same accurate DIC algorithms found in the powerful VIC-3D software, while allowing users to acquire data quickly and easily. The system features a simplified setup, streamlined image acquisition, and ideal post-processing features. The stereo cameras are mounted inside a protective enclosure, which includes an integrated LED light source, a cooling fan, and an exterior USB & power connectors. The system also includes a tripod, tripod head, speckle roller, ink pad, calibration target, and a convenient carrying case.