Technical description

Main functions

The combined static/dynamic impactor allows to carry out impact tests in all orientations (horizontal or vertical). The shocks are generated by a linear impactor, driven by an electric servomotor. The position and speed measurement with respect to the impacted object makes it possible to measure the potential energy of the shock and the energy absorbed by the sample.

The position and orientation of the impact are adjustable and motorized.

This bench also enables to conduct static compression tests up to 80 kN.

Operating mode

The machine is attached to a test support or directly to the tested element. This hooking is achieved by an automatic servo-controlled system of tightening straps which allows to avoid the use of a gantry of large dimensions (test on an aircraft for example).

The user regulates the position and orientation of the impactor. The test bench automatically searches for a contact position. The impactor is then powered onto the product/sample at a regulated speed. The impactor is automatically caught up to avoid shocks after rebound.

The differential position of the impactor/target is measured by a laser measuring.

1 impactor body with drive and 2-rail carriage guide Ø 50 mm
1 carriage equipped with 8 rollers which realize impacts up to 500 J (dynamics tests)
1 electric servo-cylinder 80 kN (static tests)
max. extension 300 mm
2 beams with adjustable spacing from 2,100 mm to 2,600 mm
- 8 pads filled with foam rubber
700 mm × 400 mm
- 1 strapping system : max. strap traction force
30 kN/strap
2 laser support ramps
- Measuring laser for compensation of the frame deformation
- laser pointer
1 remote control to control the tightening strap and impactor orientation engines
1 special software to control the machine and analyze the measurement results
Impact energy
50 to 500 J.
Impact speed
1,2 to 4 m/s
Moving mass
54.9 to 65 kg
Accuracy of applied energy
≈ 5%
Adjustment in the X direction
800 mm (± 400)
Adjustment in the Y direction
400 mm (± 200)
Adjustment in the alpha direction
100° (± 50°)
Length (≠ depending on the spacing of the beams)
2,800 to 3,300 mm
Depth (depending on impactor and pad orientation)
2,000 mm
Height
3,025 mm
Total weight with electric cylinder
≈ 2,200 kg
Power supply: 400 VAC tri + neutral + ground
16 A
1 test assembly mounted on 4 swivel wheels
Base radius
2.5 m
Test frame weight
600 kg
Option : applied energy verification pendulum
4 spherical impactors (Ø25.4, Ø50, Ø70, Ø100)
1 impactor extension
1 force sensor
2 strip shorteners
1 pair of strips 18.5 m
1 pair of strips 6.5 m

Advantages

  • Autonomous hooking on the tested product thanks to automatic tightening straps
  • Shots possible in all directions with motorized settings
  • Accurate firing position thanks to automatic X/Z adjustment with laser aiming
  • Adjustable position of the backing pads to adapt to the product diameter

Ihm

Human-computer interface

Contact
French Fab