| 摘要 |
<p>A device suitable for the qualitative characterisation of the state of a surface. The invention concerns a device suitable for the qualitative characterisation of the state of a surface of an object, for example for the qualitative characterisation of a surface of a piece of wood, comprising:•a feeler (10),•a means for rotating the feeler, such that the feeler follows a circular trajectory,•an electroacoustic transducer (30), configured to produce an electrical signal representative of the sound waves transmitted by the feeler. Application to the qualitative characterisation of a surface, for example at the end of a production line producing parts. Application to all types of materials: woods, metals, plastics, fabrics, etc.</p> |
