Strength and properties of materials > Stress and strain





The equipment is used for studying the stress and deflection of a thin diaphragm.

The circular aluminum alloy diaphragm is clamped around its edge by two heavy steel flanges. Internal pressure is applied to the diaphragm by a hydraulic hand pump. Pressure in the diaphragm is indicated on a pressure gauge. A dial gauge is fitted onto a cross bar to measure the diaphragm surface profile. Scale on the cross bar indicates the dial gauge position.

Strain gauges are of the same gauge factor and the gauges are fitted onto the diaphragm at different angles and radii. Each strain gauge is wired to form a full bridge with temperature compensation gauge and zero adjustment in a bridge box with strain gauge indicator.

Instruction manual is also included.

  • Deflection of circular diaphragm under pressure

  • Strains on the diaphragm surface under pressure

  • Diaphragm :
- Effective diameter:  200 mm
- Maximum internal pressure:  60 kN/m2
  • Pressure gauge
:  1 kg/cm2
  • Number of strain gauges
:  8 ea.
  • Dial gauge
:  0-20 mm x 0.01 mm graduation
  • Strain indicator
:  8 channels
  • Power supply
:  220V, 1 Ph, 50Hz. Other power supply is available on request.
  • Net (unpacked) Shipping Dimensions WxLxH: 60 x 65 x 41 cm
  • Net Weight:  Approx. 31 kg
  • TM445-050
Computer Interface (computer not included)
                                   This includes TM445S and significant sensor(s) instead of analog measuring instrument(s), data acquisition (capture, display, graph and/or data export), additional software function for real-time data logging with computer interface unit and WiFi feature for data logging and real-time display remotely on smartphone (iOS and Android)
  • TM445S
Learning Software
                                       to support both online/offline training with data calculation and analysis by manual data entry from analog measuring instruments.