Testing instrument for rebound resilience tests

Description Advantages and features Technical overview

The ZwickRoell 5109 Rebound Resilience Tester

The rebound resilience tester

For tests on elastomers and rubber to DIN 53512 (elastomers and rubber); ISO 4662 (rubber); BS 903 Part A8 Method B (rubber); ASTM D7121 Method B (Schob)
For tests on foam materials to DIN 13014 (polyether foam hospital mattresses).

Advantages and features

Function description

The objective of tests on elastomers and foams is the straightforward and fast measurement of material elasticity. One material that is up to 100% elastic stores supplied energy and releases it at the moment the force is no longer applied. In contrast, material that is up to 100% plastic absorbs supplied energy completely. These characteristics are used to measure rebound resilience:

Advantages

Device features/data

Resolution 0.06 degrees
The testing system is extremely low-maintenance: The only actuator during fully automatic sequences is the gear motor.
The pendulum encoder.
The free from wear mechanics.
- The keyboard is dust proof.
The standby mode and LCD display turn this device into a low energy device.

Operation

Operation is menu driven.
The pendulum height is easily adjustable via an eccentric with the help of a settings program.
Two test programs for determination of the duration of swing as well as the friction are integrated in the device.
The required standard is selectable and the sequence can be configured.
Several languages can be set (English, German, and a third one open for assignment)
You can connect to a PC and to the ZwickRoell testing software: The ZwickRoell testing software offers a wide range of possibilities for data transfer (from device to PC) as well as for evaluation, processing, documentation, and saving test results.
Rapid error analysis is possible through an integrated routine.

Specimen tempering

The specimen along with the interchangeable holding fixture can be tempered externally in a heated chamber.

The specimen holder is attached to the base of the device with a plug connector, which enables quick replacement. This minimizes the temperature loss of the temperature-controlled specimen when it is inserted into the test device.

A specimen holder with a temperature control unit for a temperature range of up to 100°C that can be electrically heated is available for tests at high temperatures.

PC connection

A PC can be connected via the integrated RS232 C interface for the output and further processing of the test results.

The ZwickRoell testing software offers options for evaluation, documentation, storage and data transfer. It can also accept and process measured values from various devices (e.g. pendulum impact testers, thickness gauges, scales, etc.).

Technical overview

Item No.	324802	324804
Designation	Rebound resilience tester for elastomer and rubber tests	Rebound resilience tester for foam testing
Specimen dimensions
Diameter of the specimen	Ø 28 ... 50	-	mm
Length of the specimen	28 ... 50	80	mm
Width of the specimen	28 ... 50	80	mm
Thickness of the specimen	0 ... 15	50	mm
Distance from specimen holder to the striking edge	0 ... 60 (can be adjusted steplessly)	0 ... 60 (can be adjusted steplessly)	mm
Pendulum energy	0.5	0.2 (pendulum 1), 0.196 (pendulum 2)	J
Pendulum striking edge, dome-shaped	Ø 15	- (pendulum 1), Ø 30 (pendulum 2)	mm
Rounded end	-	R_K= 40, Cyl. Ø = 40 (pendulum 1)
Pendulum length	L_red = 200	L_red = 200	mm
Pendulum mass	0.252	-	kg
Apparent strain energy density	426.5	-	kJ/m³
Angle of fall	90	90	°
Impact velocity	1.98	1.98	m/s
Display	2-line LCD	2-line LCD
Dimensions
Height	330	330	mm
Width	450	450	mm
Depth	230	230	mm
Weight, approx.	51	51	kg
Scope of delivery	1 connecting cable, 1 spherical striking edge , 1 specimen grip	1 connecting cable, 1 spherical striking edge , 1 specimen grip

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Impact testers & Charpy impact testers: Pendulum impact testers and drop weight testers for energy ranges from 5.5 joules (pendulum impact tester) up to 100,000 joules (drop weight tester).

Pendulum impact tester and drop weight testers

Impact testers help determine the failure behavior of materials or components under rapid loads and changing temperatures. The ZwickRoell product line includes pendulum impact testers for metals and plastics and drop weight testers with an energy range of only a few joules up to 100,000 joules.

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