A NEW SENSOR FOR MEASURING ICE FORCES ON STRUCTURES: LABORATORY TESTS AND FIELD EXPERIENCE

A device <MEDORF panel> for the measurement of ice forces on Arctic offshore structures is described. The basic concept of this instrument is similar to the one developed several years ago by Esso Resources Ltd i.e. two large flat plates <1 m x 2 m> separated by rubber-like buttons which are compressed under ice pressure. Several important improvements have been made to the original concept which make the new sensor more reliable, more sensitive and less expensive than the original sensor. The main innovation consists of filling the holes between the rubber buttons with a non-freezing fluid which is expelled when a load is applied to the sensor. The quantity of fluid expelled is proportional to the load and can be read using a simple, graduated transparent tube. Because it is thin and wide this type of ice pressure sensor functions well when embedded in an ice sheet as its stress concentration factor is close to unity <1.09>. In addition to normal loads, the sensors can be instrumented with strain gauges to measure shear loads exerted on them by the ice.

  • Supplemental Notes:
    • Technical Research Centre of Finland, VTT Symposium 38. Procs. 7th International Conference on Port and Ocean Engineering under Arctic Conditions, Helsinki, 5-9 Apr. 1983, Vol. 4, p. 790 (12 pp.)
  • Authors:
    • Metge, M
    • Pilkington, G R
  • Publication Date: 1983

Language

  • English

Subject/Index Terms

  • Subject Areas: Marine Transportation;

Filing Info

  • Accession Number: 00685990
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM