How is a tight bond ensured between the metal-packaged sensor and the surface of the object under test?
For metal-packaged fiber Bragg grating (FBG) sensors, ensuring a tight bond with the surface of the object under test is critical for accurate measurement. This is primarily achieved through several robust installation methods:
- Welding: For sensors designed for high-temperature applications or requiring extreme durability, direct welding (e.g., spot welding for sheet-type sensors) or welding of specialized mounting fixtures (for tube-type sensors) to the object’s surface provides a very strong and stable mechanical connection, ensuring excellent strain transfer.
- Adhesive Bonding: High-performance industrial adhesives are commonly used, especially for applications where welding is not feasible or desired. The choice of adhesive depends on the operating temperature, material compatibility, and required bond strength. For tube-type sensors, fixtures can be bonded to the surface.
- Mechanical Fastening (e.g., Bolting/Clamping): For some tube-type sensors, specialized mounting fixtures can be bolted or clamped to the surface of the object. This method allows for easier installation and removal compared to welding or adhesive bonding, while still providing a secure attachment.
For metal-packaged sensors, such as the OFSCN® Alloy Tube Packaged Fiber Bragg Grating Strain Sensor, the installation typically involves either welding the sensor’s mounting base directly or using a fixture that is then welded, bonded, or bolted. These methods minimize any interface slip or creep, thereby guaranteeing a tight bond and reliable strain measurement.
Here are some standard images of the OFSCN® Alloy Tube Packaged Fiber Bragg Grating Strain Sensor:
You can find more detailed technical parameters on our website: OFSCN® Alloy Tube Packaged Fiber Bragg Grating Strain Sensor.
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