HPM6/1a Plane Frame With Strain Gauges

HPM6/1a Plane Frame With Strain Gauges

A plane frame is made from fully welded hollow square section steel members making a 45° truss. The truss has special end mountings supplied that allow different end bearing conditions to be used, i.e. pinned and roller end. The end mountings also allow the frame to be inverted for work on an inverted truss. Seven members of the truss are strain gauged with half bridge arrangements. Each strain gauge pairing has a cable loom attached and terminated with a numbered connector. This connector can be fitted into the optionally available HPM15 Data Acquisition Interface for direct reading of the member strain during loading. The truss has been specially designed to be tested in the HPM1 MAGNUS Test frame. The HPM2 standard accessories supplied with the HPM1 are required. The experiment calls for joint deflections to be measured during testing. Safety chains and high level reaction supports are supplied with this apparatus.


Essential accessories: HPM1, HPM3 or HPM3a
Optional accessories: HPM15, HPM20

HPM6/1a Plane Frame With Strain Gauges

HPM6/1a Plane Frame With Strain Gauges

  • Effective teaching experiment
  • Real size welded truss
  • Comparison with pin jointed design theory
  • Verification of reciprocal theorem
  • Provides influence lines
  • 7 members are strain gauged to allow the forces in the members to be determined.
  • A comprehensive instruction manual for students and lecturer provided.
  • Must be used in conjunction with the HPM1, 300 kN Universal Testing Frame (not supplied), HPM3 Hydraulic Ram System (Not supplied)
  • 2 year warranty
  • Comparison of deflections with theoretical values assuming pin joints
  • Comparison between normal and inverted trusses
  • Measurement of strains in members of a fully welded truss
  • Investigation of reciprocal theorem
  • Strain gauging of welded structures
  • The use of strain gauges and strain meters