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Ray-Ran Instrumented Falling Weight Impact Tester

The Instrumented Falling Weight Impact Tester uses strain gauged loadcells for force measurement and velocity sensors at the point of impact to provide a wide array of real-time data. This includes graphical representation of force, velocity, energy, time and displacement data that provides an in-depth understanding of the test sample’s reaction to the impact event. Conforms to standards including ASTM D7136, D3763-02 and ISO 6603 with variable drop heights up to 1m, 2m and 3.35m available.

Description

Specifications

Documents

The Instrumented Falling Weight Impact Tester apparatus determines the impact damaged and resistance to materials using force and velocity transducers, which impacts the specimen under investigation. It provides real time data to calculate the energy and depth of impact that is subject to the sample under test.

Ideal for testing a variety of materials
Typical materials tested are composites and rigid plastics, such as fibre glass, laminates and engineering polymers and elastomers as well as ceramic materials. This makes the system ideal for research in industries including Automotive, Aerospace and Construction as well as in Universities.

Configurable to your needs
Utilizing pneumatic Tup return and electrical height adjustment, the system is extremely versatile, with configurability in terms of maximum drop height, maximum falling weight capacity, impact head geometry, instrumentation capacity and also the sample cabinet dimensions so as to cater for larger specimen such as large diameter pipe segments. The 1m, 2m and 3.35m height options can achieve maximum impact velocities of 4.42m/s, 6.26m/s and 8.1m/s respectively, with the drop mass range of 1kg to 35kg producing an impact energy range up to 1100J.

Fixtures
With pneumatic clamping for flat specimens supplied as standard plus the option for custom manual clamping, pipe “V” rests and other custom fixturing, the sample cabinet can cater for a wide range of specimens. The falling assembly consists of interchangeable rail-guided carrier plates that cover specific weight ranges, adjustable through additional weight sets that are added above the plate. Interchangeable impacting heads are connected to the underside of the carrier plate and can have bespoke geometry with existing options available to cover a range of testing standards.

Flat Plate / Plaque Testing
The standard pneumatic specimen clamp can include various sizes of support ring to cater for a wide range of flat specimen types and reletove testing standards. There is also a manual calmping option for specimens with specific requirements or geometries.

Pipe Testing “V” rest
The test is used for the examination of pipe sections and tubing for impact strength properties as complete segments of pipe. Sample diameters from as little as 12mm Ø up to 400mm Ø can be tested on the standard machine and up to 650mm Ø on an extended base system. The Pipe is supported in either a 90° or a 120° angled “V” support as is impacted by the load carrier in a single drop. The support rests can be manufactured to any test standard or customer requirement.

Other Fixtures
For specific component testing Ray-Ran can design and manufacture bespoke clamping fixtures to meet customers individual testing requirements and parameters.
Fixtures for conducting Izod and Charpy tests are also available.


Test Results showing the impact events force distribution in Red and the Impact Energy evolution in Blue

The impact test result is presented in graphical and tabular forms within a fraction of a second of the impact event.  There is extensive automatic data analysis, as well as user controlled advanced analysis options. The precise calculations give results for time, force, velocity, displacement and energy in a a fully customisable view in which cursor points can be used to integrate attributes of the displayed graph.


Pneumatic clamp system for ISO 6603


Typical Strain Gauge tup

Tup loadcells are available in several capacities including 5kN, 12kN, 22kN and 45kN. Impact heads can be made to any test standard.

The configurability of the instrument makes it ideal for product development and quality control within production as well as for teaching institutions and in particular research and development labs, owing to the wide array of data available from each test run.


Voltage:  110 or 240 volt available

Monitor:  Integrated touchscreen monitor.

Load cells:  5kN, 13kN, 22kN and 45kN  load cells available.

Operating pressure:  Max/min Operating pressure 80-150 PSI (5.5 – 10.3 bar)

Drop Height Test Machines Available:  1m, 2m and 3.35m

Voltage:  110 or 240 volt available

Monitor:  Integrated touchscreen monitor.

Load cells:  5kN, 13kN, 22kN and 45kN  load cells available.

Operating pressure:  Max/min Operating pressure 80-150 PSI (5.5 – 10.3 bar)

Drop Height Test Machines Available:  1m, 2m and 3.35m

Features & Benefits

Value added return on investment.

Instrumentation giving real time force vs time plots/results, velocity at impact + more

Integration of the resulting acceleration vs time curve provides the velocity change upon impact from which the impact energy can be calculated.

Load cells are available in different capacities. As standard they are supplied in 5kN, 12kN, 22kN and 45kN capacities which cover typical testing needs.

Fast processing Data logger with 1 MHz sample rate providing a value for each 0.001 ms.

Optical Velocity Detector

Variable drop height up to maximums of 1, 2 or 3.35 meters

Integrated PC with Touchscreen Monitor

Digital height indicator

Electrical safety interlock

Impact energies up to 1100 Joules (dependent on model)

Low friction carrier bearing System

Mechanical raise/lower fixture platform

Pneumatic Tup Anti-Rebound feature

Pneumatic Tup release mechanism

Pneumatic Tup return

Product user manual

CE declaration certificate

Suitable for testing polymer materials and composites

Twin guide rail system

Variable velocity up to  8.1 m/s (dependent on model)