Method for fixing a fiber having a fiber Bragg grating sensor segment onto a component and bearing device with such a fiber
AssigneeAktiebolaget Skf
InventorsDefeng Lang, Ben Koperdraad
Life of this patent
Estimating the term…
Abstract
A method for fixing a fiber having a fiber Bragg grating sensor segment onto a component configured to undergo changes in strain and/or temperature. The method providing the steps of stretching at least a section of the fiber including the fiber Bragg grating sensor segment by a defined and calibrated preload into a preloaded condition, fixing the section of the fiber including the fiber Bragg grating sensor segment being in the preloaded condition on a carrier element, and fixing the carrier element onto the component, as well as a bearing device with such a fiber.
Claims13
A method for fixing a fiber having a plurality of fiber Bragg grating sensor segments onto a bearing configured to undergo changes in strain and/or temperature, comprising the steps of:
- i) providing the bearing which has a circumferential outer surface, the circumferential outer surface defining a groove therearound,
- ii) stretching each of a plurality of sections of the fiber such that each of the plurality of sections forms a separate one of the plurality of fiber Bragg grating sensor segments by a defined and calibrated preload into a preloaded condition,
- iii) fixing each of the plurality of sections of the fiber while in the preloaded condition on a separate one of a plurality of carrier elements such that each of the plurality of fiber Bragg grating sensor segments is on a separate carrier element, each of the plurality of carrier elements comprising a one-piece element of uniform plate shape as taken along the circumferential outer surface of the bearing,
- iv) fixing each of the plurality of carrier elements onto the bearing in a spaced apart fashion therealong such that each of the plurality of carrier elements is separate from the other of the plurality of carrier elements, each of the plurality of carrier elements having a concave inner surface located radially inwardly from the circumferential outer surface of the bearing such that each of the plurality of carrier elements is at least partially located within the groove.
A bearing arrangement comprising:
- a bearing ring comprising a circumferential outer surface, the circumferential outer surface defining a groove therearound, and
- a sensor arrangement,
- wherein the sensor arrangement includes
- a fiber having a plurality of fiber sections each including one of a plurality of fiber Bragg grating sensor segments,
- a plurality of carrier elements, each of the plurality of carrier elements comprising a one-piece element of uniform plate shape as taken along the circumferential outer surface of the bearing ring, and
- wherein each of the plurality of fiber sections is fixed in a defined and preloaded condition on a separate one of the plurality of carrier elements,
- wherein the sensor arrangement is fixed to the bearing ring by fixing each of the plurality of carrier elements onto the bearing ring,
- wherein each of the plurality of carrier elements has a concave inner surface located radially inwardly from the circumferential outer surface of the bearing ring such that each of the plurality of carrier elements is at least partially located within the groove, and
- wherein each of the plurality of carrier elements is discretely spaced such that each of the plurality of fiber Bragg grating sensor segments is on a separate one of the plurality of carrier elements and such that each of the plurality of carrier elements is separate from the other of the plurality of carrier elements.
Dependencies are inferred from the claim text.