- DYNA Force® in Cable Stay Anchor, Waldo, Maine, USA
- DYNA Force® in Fatigue Test of Cable Stay System
- DYNA Force® in Fatigue Test of Cable Stay System
- DYNA Force® for Seismic Evaluation of Building Structure, California, USA
DYNA Force® Elasto-Magnetic Sensor
Practical Applications
When a DYNA Force® sensor is installed on a strand/bar, the force in it may be obtained directly by merely attaching the leads from DYNA Force® sensor to a portable Power Stress unit. No other equipment is needed. DYNA Force® sensors have been used in many bridge and building structures for the past several years.
DSI supplied two hundred and forty sensors for Waldo stay cable bridge, Maine, USA. Each cable had six sensors and the cable forces at each stage of construction were monitored using these sensors. Periodic lift-off operations were made on the strands with sensors. A good correlation was observed. The bridge is now open to traffic and the forces in any cable can be monitored anytime using these DYNA Force® sensors without any disruption to traffic.
DSI used DYNA Force® sensors in a fatigue testing of a 41-strand cable stay system. The force in each 0.6” Ø epoxy coated strand was monitored at various loading stages during two million fatigue cycles.
DYNA Force® sensors were used in moment resisting frames in a City Office building in California. The tendons were 0.5“ Ø greased and sheathed un-bonded strands. DYNA Force® sensors were used to measure the force during stressing and will be used to monitor the forces in each loop tendon especially after earthquake takes place.