Phased Array Inspection of Spot Welds

With increasing vehicle production, the automotive industry is turning to image-based inspection to reduce downtime while maintaining high quality standards.



Spot weld inspection starts here

Waygate Technologies' Krautkrämer SpotVision, developed in collaboration with automotive manufacturers, is the fastest, easiest, and most accurate phased array solution for spot weld inspection. It provides confidence, parts are properly welded. This increases productivity as well as ensures product safety and that quality standards are met at all times.

Krautkrämer SpotVision Features
An industry first

The solution combines a phased array probe and the Mentor UT phased array flaw detector for comprehensive insights at the highest level. One of the most remarkable features of the newly developed 2D matrix phased array probe is its flexible delay line, filled with liquid. This allows it to adapt to the overall complex geometry of spot welds. The flexible probe also provides optimal acoustic coupling, avoiding false negatives and minimizing process delays.

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Better insights allow for better results

The 2D matrix probe is combined with Total Focusing Method (TFM) imaging technique. This achieves higher resolution and measurement accuracy than with a comparable phased array. Thanks to TFM, each element is fired individually and sequentially while all elements are listening.

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Lower costs through increased confidence

Krautkrämer SpotVision is easy to set up and operate, reducing the need for training for qualified inspection personnel. This is due to the software's intuitive user interface. In addition, Mentor PC Live software connects the instrument to a PC via Ethernet, which is especially helpful when the operator is in a different location.

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Technical Specifications

Accessories


Base Kit UP680023

  • Mentor UT SpotVision Base Kit (Mentor UT, incl. power adapter, Mentor remote battery, communication module, shipping case, probe connector adapter)
  • Probe: G13MAPA-32 (SpotVision 2D phased array probe, 32 elements)
  • Tyro remote control with 8 buttons
  • SpotVision Reference Block (Reference block including 9 different machined nuggets, diameter ranging from ø2.5 to ø6.5 mm)
Krautkrämer SpotVision Upgrade Kit UP680024

  • USB drive with SpotVision UT SW and Docs (USB drive containing the software installers for the SpotVision application and documentation.)
  • Probe: G13MAPA-32 (SpotVision 2D phased array probe, 32 elements)
  • Tyro remote control with 8 buttons
  • SpotVision Reference Block (Reference block including 9 different machined nuggets, diameter ranging from ø2.5 to ø6.5 mm)
Product-related FAQs
What is TFM?

TFM is short for Total Focusing Method. In brief, each element is fired individually and sequentially, while all elements are listening. So the image reproduction is not limited by the number of pre-defined focal laws. With the TFM image processing, a higher resolution and measurement accuracy with a comparable phased array is achieved.

What are the benefits of a flexible versus a solid delay line probe?

With a flexible delay line, less couplant would be required for optimal acoustic coupling and the probe adapts easily to uneven surfaces, like spot weld indentations. As a result, false negatives are avoided.

Can I use the Krautkrämer SpotVision system for other applications than spot weld inspection?

Yes, you can. SpotVision is used in combination with Mentor UT, a multi-application phased array device. In the automotive industry, also the Bond Scanner solution to inspect adhesive bonding can be used.

What is the accuracy of SpotVision?

For nuggets in the diameter range of 2.0 - 6.0 mm, the measurement accuracy is ±0.5 mm / ±20 mil with a certainty of 90% according to VDA5 – Gauge R&R Analyses.

The Krautkrämer Portfolio

Krautkrämer SpotVision is part of the Waygate Technologies portfolio for the inspection of joints. This includes the Krautkrämer Bond Scanner for inspecting adhesively bonded joints with fast and easy to interpret 100% coverage. Both solutions are designed for ideal use in combination with the Krautkrämer Mentor UT phased array flaw detector.


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