Records real time fluctuation in bolt tension

ENTER 95403 Tel: 01295 270333 ipesearch.com/enquiry ENTER 95404 Tel: 0121 601 6350 ipesearch.com/enquiry ENTER 95405 Tel: 0191 491 0808 ipesearch.com/enquiry loosening it. Its initial length was recorded using a USM-3 meter and a magnetic transducer placed on the bolt end. The elongation measurement did not seem to be stable since the value was constantly drifting.

Norbar's ultrasonic specialist, Gregory Young, says: "The tower base foundation bolt was located at a 160° angle from the wind direction. As the wind increased, it pushed the tower in the direction of the bolt, the joint was compressed slightly and the elongation decreased. As the wind decreased the tower rebounded and the bolt's elongation increased as the compressive forces on the joint decreased. The ability to read in real time minute fluctuations in the bolt tension can be of value to those dealing with bolted joint issues."