LThead
Precise non-destructive testing of weld seams using laser thermography
The LThead is edevis' most powerful system for non-destructive quality control of weld seams – optimized for cell connectors in batteries and other safety-critical applications. The system enables contactless, quantitative inspection in inline processes – using proven laser thermography technology.
Applications
- Inspection of cell connectors in EV batteries
- Weld seam testing in serial productionInline quality assurance in automated production lines
- Detection of bonding defects, cracks, and voids
- Inspection of joints made of aluminum, copper, and steel
- Testing of metallic structures with complex geometries
- Standards-compliant documentation for safety-critical components
VIS
IR
How does inspection with LThead work?
The LThead uses the proven edevis principle of active thermography with targeted laser excitation. By analyzing the resulting heat flow, the system delivers quantitative, reproducible results – even for challenging materials or geometries. The measurement is contactless, non-destructive, and takes less than 1 second.
Typical workflow of an LThead inspection
1. Laser excitation
A high-power laser generates a thermal wave in the test object.
2. Heat flow in the component
The heat distribution is captured in real time by a high-resolution infrared camera.
3. Detection using an infrared camera
The evaluation of phase images reveals bonding defects beneath the surface – regardless of surface condition.
4. Software-assisted analysis
The DisplayImg software with AI-based evaluation detects OK/NOK patterns and documents the results.
Technical specifications
Optics / Sensors
Laser
System
LThead inquiries
Get in touch with our sales team to learn how the LThead can be integrated into your process.
Whitepapers
Precisely inspect weld seams
Laser thermography ensures battery cell connections reliably and non-destructively in e-mobility.
FAQ
Our frequently asked questions — answered quickly and easily.
Can fine bonding errors or microscopic defects also be detected?
For which weld joints is the LThead suitable?
How is the documentation of the test results carried out?
How quickly is a measurement carried out with the LThead?
Is the LThead suitable for use in automated lines?
Product inquiries
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