Independent researchers put a real benchmark on fast battery CT:
1-second acquisition
Independent open-access research from TU Braunschweig and PowerCo reports 1-second CT acquisition in a feasibility setup using a MetalJet X-ray source and a photon-counting detector. In the paper, key inspection features (including AC-overhang and weld defects) remain identifiable even at the fastest scan.
Our production takeaway is simple: when exposure time decreases, you become photon-statistics limited. X-ray source brightness determines whether the data is stable enough for automated decisions and repeatable measurements.
Decision-quality data = CT data that supports stable automated pass/fail (and repeatable measurements) at your target throughput, with controlled false calls.
Comparison of scan quality of conventional CT and MetalJet based CT.
(Image from: Masuch, Gräfnitz, Dröder, “Cross-Process X-ray Inspection Strategy in Battery Cell Assembly”. See citation below)
What independent research reports
- Feasibility CT acquisition down to 1 second using a MetalJet X-ray source and a photon-counting detector.
- Example inspection targets in the study include AC-overhang and weld defects.
- Strategy: combine upstream screening with a later multifeature CT gate rather than adding CT everywhere.
What it means in production
- At very short exposures you become photon-limited. Decision stability depends on photon statistics (signal-to-noise) and resolution margin, not only scan time.
- X-ray source brightness buys margin for stable automation and repeatable measurements.
Where MetalJet fits
- MetalJet is designed for short-exposure CT: high brightness from a small spot so you can reduce exposure time while keeping usable photon statistics and sharp detail.
- In the feasibility setup, the fastest scan uses millisecond-scale exposure (1 ms), illustrating why brightness becomes gating at high speed.
- Deployment requires system-level integration (mechanics, shielding, automation, reconstruction, insight extraction), which is why we work closely with leading CT system builders.
Citation: Masuch, Gräfnitz, Dröder. “Cross-Process X-ray Inspection Strategy in Battery Cell Assembly.” Springer (open access).
PDF link (hosted on Excillum)
License: CC BY 4.0
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