Pendulum Impact Testers for Tests on Metals

The choice for impact tensile tests and impact bending tests on metals according ASTM E436.

  • The HIT450P pendulum impact tester can be used for Charpy, Izod, Brugger, impact tensile and wedge impact tests to all established standards like ASTM E23, ASTM E436 and BS 131. Likewise, all international standards such as ISO, DIN, EN and JIS can be tested.
  • For simple metal applications, ZwickRoell offers the new HIT300P pendulum impact tester exclusively as a promotion package. The comprehensive solution is ideally suited for standardized tests up to 300 joules.
  • The PSW 750 pendulum impact tester can be used for Charpy and impact tensile tests on metals to all established DIN, EN, ASTM, ISO and BS standards.
Pendulum_Impact_Tester_HIT450P_HIT750P

Operating Principle of a Pendulum Impact Tester

The name "pendulum impact tester" is self explanatory for the function of the machine. A lifted mass has potential energy. This is converted to kinetic energy by the mass being subjected to a free fall. Binding the mass to a fixed pivot (pendulum) deflects the velocity vector. Impact loading of a material being tested is realized at the point of maximum kinetic energy (equal to the minimum potential energy) of the mass. This takes the form of a "flexure test".

This pendulum impact tester is used for examining the break behavior of metallic materials at impact loading. A suitable standardized specimen is loaded in the flexure test until it is completely broken. The work required is measured and is known as the energy absorbed AV. The term "notched impact strength" aK is often used, which refers to the energy absorbed AV on specimen cross-section S; it is measured in j/cm2. However, modern test methods examine the functions of the energy absorbed or the flexural force in time and/or travel (deformation of the specimen). Since thermal energy influences the notched bar impact test to a high degree, this method always depends on the temperature of the specimen. This becomes increasingly important if the temperature deviates from ambient temperature through the use of temperature conditioning devices.

Pendulum impact tester_HIT450P_with new instrument electronics

Operating principle HIT450P

The HIT450P / HIT300P is a universal pendulum impact tester and can be used for a wide variety of different types of test. Modular design and comprehensive accessories make it well suited to the requirements of research, development and quality assurance.

The HIT450P / HIT300P can be used for tests to the following standards: ISO 148¬1, ASTM E23, BS131¬1, JIS Z 2242, GOST 9454¬78, DIN 50115 (withdrawn).

  • Impact bending tests on metals (Charpy, Izod – conventional and instrumented)
  • Impact tensile tests on metals
  • Brugger tests to verify the wear-behavior of transmission gears
  • Wedge impact test to determine the strength properties of structural adhesives

Key Advantages and Features HIT450P

Reliable test results

  • Reliable test results
  • Plausibility check of test results enabled by a combination of electronic and analog displays
  • The air and bearing friction of the pendulum hammer and the friction of the analog display drag pointer are determined and evaluated with support from the software.
  • Transmission errors are eliminated: Measurement data from the caliper are read-in directly; test series can be transmitted to a PC via a USB port

Short test cycles

  • Short test cycles
  • Fast, standard-compliant specimen insertion
  • Specimen remains can be removed selectively
  • Semi-automatic centering of Charpy specimens

Reduced operating costs

  • Reduced operating costs
  • Four-way anvils
  • Patented impact fixture
  • Tup material matched to specimen material available

Future-proof

  • Future-proof
  • Izod, Charpy, impact tensile and instrumentation possible in one instrument
  • ISO 13849-1 safety requirements are dependably satisfied

Pendulum impact tester HIT450P

to ISO 148-1, ISO 14556 and ASTM E23

Pendulum impact tester HIT450P

Pendulum Impact Tester PSW750

Operating principle PSW 750

Key Advantages and Features PSW 750

Reliable test results

  • Reliable test results
  • Plausibility check of test results enabled by a combination of electronic and analog displays.
  • The air and bearing friction of the pendulum hammer and the friction of the analog display drag pointer are determined and evaluated with support from the software.
  • Transmission errors are eliminated: Measurement data from the caliper are read in directly; test series can be transmitted to a PC via a USB port.
  • The instrumentation determines further important material-specific properties in addition to the potential energy, e.g. force/time characteristic lines.

Easy handling

  • Safety and ergonomics
  • Complies with the requirements of ISO 13849.
  • With the safety device it is possible to release the pendulum using an integrated release button on the door handle. Immediately after closing the safety device, the test can be initiated. This allows for quick testing of temperature-conditioned specimens.

Future-proof

  • Reduced operating costs
  • Anvils made of modern materials with high-quality coatings reduce wear and tear.

Safety Device

ZwickRoell pendulum impact testers in the HIT300 / HIT450P / PSW 750 ranges satisfy the requirements of EG Machinery Directive 2006/42/EG and of EN ISO 12100 and EN ISO 13849-1/2. This also means that the failure of an individual safety control element will not result in the loss of overall instrument safety.
The pendulum impact testers as a whole have been revised in this respect. The resulting safety device satisfies the requirements of national and international standards.

During design of the safety housing a primary consideration was ease of operation, whether during the test, during re-equipping for different specimens or types of test, or during maintenance and calibration. Centrally located controls, which (with the exception of simple visual confirmation of the function selected) also indicate operating errors, make working with these pendulum impact testers safe, simple and fast.

Front door, side door and housing recess enable:

  • easy specimen insertion
  • fast fixture and pendulum changes
  • easy access for maintenance, inspection and calibration
  • straightforward removal of specimen remains.

Safety and standards

The pendulum impact tester conforms to the following safety requirements: EC Machinery Directive 2006/42/EC, EN ISO 12100 and EN ISO 13849-1/2.

The pendulum impact tester can be used for tests to the following standards: ISO 148-1, ISO 14556, DIN 50115, ASTM E23, BS131-1, ZF 15-53, ISO 11343, JIS Z 2242, GOST 9454-78.

  • Indirect calibration:
  • as per ASTM E23 with NIST specimens in energy ranges low (14 to 20 J) and high (88 to 136 J); super high is not currently available from NIST.
  • as per ISO 148-2 with ERM or ZRM specimens in ranges low (< 20 J), medium (30 to 110 J), high (110 to 220 J) and very high (> 220 J) energy.

Technical Overview

HIT450P up to 450 J

Type

HIT450P

HIT300P PC

Item No.

1065598

1065601

Nominal potential energy

450

300

J

Drop height

1.3969

1.3969

m

Impact velocity

5.23

5.23

m/s

Weight

Depending upon the pendulum hammer used

590 to 610

590 to 610

kg

Concrete base

1600

1600

kg

Safety device

90

90

kg

Dimensions, with base

Height

2450

2450

mm

Width

2317

2317

mm

Depth

850

850

mm

Interfaces

USB, RS 232

USB, RS 232

Ambient temperature

+10 to +35

+10 to +35

°C

Temperature during storage and transport

-25 to +55

-25 to +55

°C

Relative humidity (non-condensing)

20 to 90

20 to 90

%

Test results, numerical

Impact energy [%], impact energy [J], impact strength [KJ/m2]

Output units

Analog - round scale

Pulse resolution

0.036

0.036

°

Power input specifications

Power supply

400

400

V

Phases

3Ph/N/E

3Ph/N/E

Permissible voltage fluctuation

±10

±10

%

Power consumption (full load), approx.

1

1

kVA

Power frequency

50/60

50/60

Hz

PSW 750 up to 750 J

Materials Testing on Radioactive Materials ("Hot Cell")

The safe operation of nuclear power plants and nuclear repositories is a key research topic all over the world. In order to ensure a high degree of safety, the materials used and real-world conditions, in this case with radioactivity, must be tested. ZwickRoell has supplied a tensile testing machine and a pendulum impact tester for an international research project.
Materials testing on radioactive materials
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