Description
A small-scale machine that fi ts on a benchtop and allows simple tensile tests of metal specimens up to a maximum load of 20 kN. This machine is a good partner to Torsion Testing Machine. The machine has an extruded aluminium bed that holds the load application and load measuring mechanisms. ‘Tie bars’ add rigidity to the structure. The load application mechanism includes a hand-driven worm-and-wheel gearbox, driving a lead screw with approximately 400 mm of travel. The mechanism uses ball races and self-aligning ball thrust races in the direction of loading. These low-friction bearings, with the large handwheel allow the user to apply maximum load with minimum eff ort. They also give smooth and progressive operation, necessary to help the user apply a steady strain rate for best results. The unit also has a smaller “quick advance” handwheel that allows the user to set the distance between the chucks simply and quickly before each test. The load measuring mechanaism is a strain-gauged load cell that connects to a microprocessor-controlled digital display. The load display unit has a ‘peak hold’ function to register the maximum load before the specimen breaks. A sliding digital display measures the tensile displacement (extension) over the entire movement. An optional precision extensometer is available for increased strain measurement accuracy to allow measurements of the material’s Young’s Modulus. Both the load, extension and extensometer displays can connect. The tensile specimens mount between the load application mechanism and load cell, in collet chucks via ball-jointed spigots. This ensures purely axial loading. The equipment includes collet chucks to fi t both the long and short style of 20mm2 specimens. we supply a starter set of tensile specimens with the machine, made of two diff erent carbon steel alloys (each in their ‘as drawn’ and their annealed condition), brass and aluminium. we can also supply extra specimens (contact our sales team for details). The User Guide includes drawings to allow the user to make their own specimens if needed. For quick and reliable tests, gives accurate real-time data capture, monitoring and display, calculation and charting of all important readings on a computer (computer not included)..
Learning Outcomes
- Tensile tests up to 20 kN on specimens made of different metals, to fi nd material characteristics such as upper and lower yield strengths, tensile strength and overall extension.
- Tests of Young’s modulus (E) for the specimen material
Specifications
ATICO is committed to a programmed of continuous improvement; hence we reserve the right to alter the design and product specification without prior notice.
Nett dimensions and weight:
1100 mm long x 350 mm high x 400 mm wide and
41.5 kg (including display unit)
Approximate packed volume and weight:
0.3 m3 and 80 kg
Digital Displays:
• Load – display resolution of 0.01 kN
• Extension – display resolution of 0.01 mm
Tensile Test specimens included (30 in sets of 5):
• 0.1% and 0.4% carbon steel (as drawn)
• 0.1% and 0.4% carbon steel (normalised)
• Brass and Aluminium
Each set of fi ve specimens has 2 x long (TL) specimens and 3 x short (TS) specimens.
Nett dimensions and weight:
120 mm x 100 mm x 65 mm and 1 kg
Approximate packed volume and weight:
0.005 m3 and 2 kg
Display resolution:
0.001 mm
Operating Conditions
- Operating environment: Laboratory
- Storage temperature range: –25°C to +55°C (when packed for transport)
- Operating temperature range: +5°C to +40°C
- Operating relative humidity range: 80% at temperatures < 31°C decreasing linearly to 50% at 40°C
