Digital simply supported beam impact testing machine

(1) Introduction
ZY-3002 type equipment is mainly used for measuring the impact toughness of non-metallic materials such as hard plastics (including plates, pipes, plastic foreign materials), reinforced nylon, fiberglass, ceramics, cast stones, and electrical insulation materials. The main technical parameters of this impact testing machine comply with the requirements of standards such as ISO179, GB/T1043, GB/T2611, JB/T8762, etc. The main features of this testing machine are intuitive display, simple structure, easy operation, and accurate data.
(2) Instrument parameters:
Operating temperature (15-35) ℃
2. Impact speed: 3.8m/s
3. Impact energy: 7.5J, (15J, 25J, 50J are optional)
Impact swing moment: Pd7.5=4.01924N · M
Pd15=8.03848N·M
Pd25=13.39746N·M
Pd50=26.79492N·M
Accuracy: Angle (0.01 °) Energy (0.001J)
Pre swing angle of pendulum: 150 °± 1 °
Strike center distance: 395mm
Impact blade fillet radius: 2 ± 0.5mm
9. Impact blade angle: 30 ± 1 °
10. Jaw corner radius: 1.0 ± 0.1mm
11. Sample type, size, and distance of support line (unit: mm)

Sample type Length L Width B Thickness D Distance between support lines
Basic dimensional deviation Basic dimensional deviation Basic dimensional deviation
1 80 ±2 10 ±0.5 4 ±0.2 60
2 50 ±2 5 ±0.2 2 ±0.2 40
3 120 ±2 15 ±0.5 10 ±0.5 70
4 125 ±2 13 ±0.5 13 ±0.5 95

(3) Instrument configuration:
This testing machine consists of a body, an impact pendulum, a sample support, a measuring device, a control mechanism, and other parts
Body: composed of a crossbeam, angle positioning mechanism, and level.
Impact pendulum: composed of an upper connecting sleeve, pendulum rod, pendulum, positioning block, impact blade, etc. The energy of the pendulum consists of 2 main pendulums and 8 counterweight weights. Two main pendulum weights are 7.5 J and 25 J. There are four counterweight weights with a 15J weight and the remaining four weights with a 50J weight.
Sample support: composed of jaw support and jaws. Before the experiment, appropriate jaws can be selected according to the sample requirements (test type).
Control mechanism: composed of a release mechanism and a handle. The mechanism fixes the impact pendulum at a 150 ° position and automatically drops the hammer for impact.
data processing
Calculate the impact strength according to the following formula
The calculation formula for the impact strength a (kJ/m2) of the notched specimen is as follows:
a=1000×E/(b×d)
In the formula: E - the impact energy absorbed by the sample (J)
B - Sample width (mm)
D - Sample thickness (mm)
2. The calculation formula for the impact strength ak (KJ/m2) of the notched specimen is as follows:
ak=1000×Ek/(b×dk)
In the formula: Ek - the impact energy absorbed by the notched specimen (J)
B - Sample width (mm)
Dk - Remaining thickness at the notch of the notched specimen (mm)
3. The calculation formula for the impact strength ak (KJ/m2) of the lateral notch specimen is as follows:
ak=1000×Ek/(b×dk)
In the formula: Ek - the impact energy absorbed by the lateral notch specimen (J)
B - Width of lateral specimen (mm)
Dk - Remaining thickness at the notch of the lateral notch specimen (mm)