Based mainly on watchmaking standard NIHS 96-50, these tests can be adapted to various metal items from the jewellery or leather goods...+++
Wear, scratch and impact resistance tests
Degradation of the visual aspect of a watch or jewel when worn is an essential perceived quality factor for the consumer. Surface alterations of...+++
Coating thickness measurements
Determining the actual thickness of coatings, surface treatments or diffusion layers requires a careful preparation by cross-section followed by...+++
Characterising mechanical properties and hardness is essential for designers of products, components or assemblies. The mechanical test...+++
Knowing the microstructure of a material very often makes it possible to understand the production or treatment process of the piece inspected. Its...+++
SEM-EDX analysis of chemical composition of metals and ceramics
Both a routine inspection technique and a powerful investigation method, Scanning Electron Microscopy (SEM associated with Energy Dispersive X-ray...+++
For a number of years, Laboratoire Dubois has been conducting in-depth investigations in the field of straps and components made from elastomer (more...+++
Despite its subjective and personal sensory nature, colour can be evaluated numerically. Among the various colour representation models, we use the...+++