Key features –
A self-contained bench mounting machine which demonstrates the phenomenon of creep under
different conditions and in different materials

• Ideal for student use and classroom demonstrations
• Demonstrates the three phases of creep
• Demonstrates effect of temperature on creep
• Compact and easily stored
• Supplied with weights and test specimens
• Inexpensive specimens readily available in lead and plastics
• Completely self-contained – needs no other parts

Experiments

• The normal breaking load of a specimen over a fixed time
• Relationship between breaking load and time for lead specimens
• Time extension curves to show the three phases of creep (primary, secondary and tertiary)
• The effect of temperature on the creep rate of specimens
• Creep recovery

Standard Features

• Supplied with comprehensive user guide
• Manufactured in accordance with the latest Specifications
• To comprise of a lever and weight machine with a long lever arm and a bearing as a pivot point
• The lever to have a mechanical advantage of 8:1
• A digital displacement indicator to measure the extension of the specimen
• A clear cylindrical enclosure is to surround the specimen area to maintain a constant temperature
• Typical test times for lead specimens to be from 4 minutes to >18 hours at 20oC, depending upon the stress applied
• To be supplied a Laboratory standard thermometer and thermocouple to measure them temperature effects of creep

Weight hanger

• 1x 100 g weight
• 2x 200 g weights
• 3x 500 g weights

Specimens:

• 20x BS1178 lead specimens
• Strain hardening coefficient n = 10
• Activation energy for creep Q = 120 kJ/mol
• 20x polypropylene specimens
• Young’s modulus = 1250 N/mm2
• Time Exponent k = 0.1 to 0.2
• 20x unplasticised PVC specimens
• Net Dimensions and Weight: approx. 570 mm x 430 mm x 220 mm,
• approx. 7.5 kg + 5 kg

 weights

• Packed Volume and Weight: approx. 0.1 m3, 15 kg