Metals

Metals

Foundry process – casting ingot

In foundry processes it is possible to save a lot of time, money, and energy if you are able to detect already developing cracks during the on-going casting process.
Our patented Laser Ultrasonics technology can achieve this! Solidification cracks / hot cracks, surface cracks, and core cracks can reliably be detected in cast ingot (round and flat ingot).

Online quality assurance during the welding process

With our patented Laser Ultrasonics technology we are able to understand the welding seam inspection inline in all welding processes. Through integrated and contactless measurements (that allow high-resolution measurements on the hot weld), the testing of the welding seam is completed within seconds after the welding has been done.

Coating technology - PVD, CVD etc.

Amplitude modulated LUS allows the thinnest layers to be characterized. Typically, these coatings are applied with a PVD or CVD technique. With this specific LUS method, the material characteristics of the coating can be identified and the layer-substrate-adhesion can also be measured.

Testing of surfaces and topographies

As illustrated in this image of a coin, the topography or roughness (parameters cf. ISO 25178) of a sample can easily be determined by Optical Coherence Tomography (OCT). The advantage of using OCT, compared to other methods, is the additional possibility of measuring steep edges. The accuracy in the measurement of height profiles is below 1 micron.

Spot welding

With Laser Ultrasonics technology, welded connections (e.g. spot welds) can be tested directly in the process.

Sheet metal & pipes

Laser Ultrasonics technology can also be used for the material characterization of sheet metal (as an example). An advantage of this is that the material only has to be accessible from one side and such measurements can often be performed directly in the manufacturing process. This enables inline wall thickness measurements of pipes during the production process.

LUS technology coupled with innovative data analysis is a highly flexible answer to your questions related to the different aspects (sheet metal thickness, elastic properties, anisotropies) of different materials (steel, aluminium, brass, copper).

Solder connections

The Laser Ultrasonics technology is also applicable for the testing of adhesion and bonding layers, e.g., solder joints. As the high-frequency ultrasonic waves are influenced at the interfaces, an image of this critical inner zone can be generated.

Tribological coatings

Metallic components are often coated dielectrically in order to optimize the operating characteristics (such as tribology).
With Terahertz technology (THz) such coatings can be measured efficiently inline.

3D printing / generative manufacturing / additive manufacturing

In recent years the rapid development and quality improvements in the field of 3D printing for plastic and metal components has enabled many applications, including the serial production of critical components. Using the OCT inspection technique (for plastics) or Laser-Ultrasonics Technology (LUS, for metals) allows to monitor the quality of the products directly during the printing process. This gives the possibility to intervene immediately to correct occurring faults inline.