Method and device for anchoring an insert in a structure by using a vibration device

A device for joining material by anchoring an insert comprising a first material in a structure comprising a second material, wherein the first material is solid and comprises thermoplastic properties and wherein the second material is solid and is penetrable by the first material when in a liquefied state, said device comprising:

• a vibration device being configured to transmit vibrations to said insert to cause at least partial liquefaction thereof and being arranged to move, relative to said structure, along an insertion direction (ID) to insert said insert at least partly into said structure,
• a contact sensor being connected to the vibration device and being adapted to move together with the vibration device along the insertion direction (ID), the contact sensor having a sensor body being adapted to detect contact with said structure, and
• a controller connected to the contact sensor and adapted for receiving a contact signal from the contact sensor indicating that the sensor body has come into contact with said structure, the controller comprising control means for interrupting, based on receipt of said signal, at least one of:
• i) a movement of the vibration device along the insertion direction (ID), and ii) a transmission of vibrations from the vibration device to said insert.