HIT Pendulum Impact Testers
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Intelligent Testing HIT Pendulum Impact Testers from 5 to 50 Joule FP 573 2.0109

2 1. The Pendulum Impact Testers from Zwick are a HIT Important Characteristics Leading mechanical testing products manufacturer Zwick Roell Group’s HIT Pendulum Impact Testers are benchmark instruments for plastics manufacturers and processors Accuracy, dependability and ergonomic design are primary features of the HIT pendulum impact testers. Advanced manufacturing technology brings improved accuracy specifications, with the following innovations and benefits for users in both R+D and quality assurance: • Pendulum coding as standard The HIT Pendulum Impact Testers automatically recognize...

3 2. HIT Pendulum Impact Testers – Everything a Pendulum Impact Tester Needs Models available HIT pendulum impact testers are available in two versions: • Stand Alone model This model is the ideal choice when there is no need to store test data. The results are calculated by the pendulum impact tester and can be displayed as required as absorbed impact energy, or as a percentage of the pendulum´s potential energy. A large, clear display allows reliable result reading, even at a distance. • PC model The PC model with RS232 or USB interface is the perfect choice if test results are to be...

4 Fig. 3: Electronic pendulum coding Motorised pendulum return After the test the pendulum is automatically captured and returned to the starting position. This feature enables the starting angle setting to be varied and optimum test parameters such as impact speed and energy loss on impact to be determined. Pendulum identification and interchangeability Just as a certified weight has its mass engraved, each Zwick pendulum carries its own data in its electronic pendulum coding (Fig. 3). These outstanding features earned HIT pendulum impact testers the Materialica 2006 Design Award. The...

5 Modern instrument electronics The electronics perform all important functions: the calculation and display of impact energy, the standardcompliant correction of windage and bearing friction and monitoring the vertical position in the impact direction. PC connection except with the Stand Alone model, is via a USB interface. There is also a serial interface for connection to existing LIMS systems. Instrumentation With instrumented testing, the load during impact is measured using piezo load cells or strain gages, depending on the individual case. The raw values are in the form of a...

6 Specimen conditioning A magazine and tempering box are available from Zwick. Fig. 1: Specimen-conditioning box Fig. 2: Magazine with chilled specimen Conditioned specimens must be impacted within 5 seconds of being removed from the tempered area. Tempering magazine holders with specimen magazines provide a quick test sequence for the HIT pendulum impact testers. Specimen magazines with magazine carriages for different specimen dimensions are attached directly to the pendulum impact tester as are the magazine holders. Ergonomics Packed with outstanding ergonomic features, the HIT pendulum...

7 The surface finish and radius of the anvils used can significantly affect the accuracy of the test results. Zwick anvils are fully precision CNC manufactured and checked for 100% dimensional accuracy. We do not supply one-piece anvils, as these may have low dimensional accuracy. Anvils can be replaced individually, making spares ordering easy and cost-effective. An optional jig ensures the anvils are accurately positioned relative to the tup. As anvils are subject to greater wear than supports they are designed to be easily and inexpensively replaced independently of the supports or...

8 The quick change adapter plates are used to adapt the pendulum impact tester to different specimen widths, whilst the supports are precisely positioned using set pins and adapt to the specimen thickness. An optional swivelling protective shield can be used with the fixture, and a positioning aid helps to locate the specimen correctly, using either the notch or the front edge of the specimen. Advantages: • Quick changing of Charpy fixture • Anvils precision-made by CNC machine and individually inspected for 100% accuracy Izod fixture Two types of Izod fixtures can be used: The manual...

9 Fig. 3: Dynstat fixture Fig. 1: Fixture for tensile impact tests, Method A Fig. 2: Tensile impact specimen in pendulum - ASTM D 1822 For tests according to ISO 8256, Method A one specimen shoulder is gripped a yoke. The other end of the specimen is clamped in the tensile impact fixture. The pendulum strikes the yoke and creates a tensile impact on the free end of the specimen. Yokes with masses of 15 up to 120 g are available. For tests according to ISO 8256 Method B and ASTM D 1822, one specimen end is gripped in the pendulum. The other end of the specimen carries a yoke and hangs free....

10 3. Instrument Specification HIT5P The following points should be checked before a pendulum impact tester is specified in detail: • To be used with or without a PC • Standards to be used • Test methods and specimen to be used The specification guide on the following pages is designed to help you to configure your instrument to meet your testing requirements. Naturally, we will be happy to answer any questions that may arise. For a quick orientation we marked the item numbers with a red dot (•). PC model Stand Alone model to be used with PC to be used without PC Max. impact energy 5 J...

11 HIT5P - testXpert® II PC-Software testXpert® II comprises Master and Standard Test Programs for optional use with the PC model. testXpert® II Test Programs Master Test Program for pendulum impact tests: connects Zwick Roell pendulum impact testers •377008 with the functions required for the pendulum impact tester configuration in use Standard Test Programs: to DIN 50115, pendulum impact test on metal •377090 to DIN 53435 (Dynstat) pendulum impact tests on plastics •377032 to ISO 179-1 (Charpy), ISO 180 (Izod), ISO 8256 (tensile impact) pendulum impact test on plastics •377034 to ISO...