AS 60068.2.75-2003

1 - AS 60068.2.75-2003 ENVIRONMENTAL TESTING - TESTS-TEST Eh: HAMMER TESTS
4 - PREFACE
5 - CONTENTS
7 - INTRODUCTION
9 - 1 Scope
9 - 2 Normative references
10 - 3 Provisions common to all hammer test methods
10 - 3.1 Definitions
10 - 3.1.1 fixing point:
10 - 3.1.2 equivalent mass:
10 - 3.2 Severities
10 - 3.2.1 General
10 - 3.2.2 Impact energy value
10 - 3.2.3 Number of impacts
10 - 3.3 Test apparatus
10 - 3.3.1 Description
11 - 3.3.2 Mounting
12 - 3.4 Preconditioning
12 - 3.5 Initial measurements
12 - 3.6 Testing
12 - 3.6.1 Attitudes and impact locations
12 - 3.6.2 Preparation of the specimen
12 - 3.6.3 Operating mode and functional monitoring
12 - 3.7 Recovery
12 - 3.8 Final measurements
13 - 3.9 Information to be given in the relevant specification
13 - 4 Test Eha: Pendulum hammer
13 - 4.1 Definitions
13 - 4.1.1 measuring point:
13 - 4.1.2 height of fall:
13 - 4.1.3 equivalent mass:
13 - 4.1.4 combined mass of the striking element:
13 - 4.2 Test apparatus
14 - 4.2.1 Test apparatus for severities not exceeding 1 J
14 - 4.2.2 Test apparatus for severities of 2 J and above
14 - 4.3 Height of fall
14 - 4.4 Testing
15 - 5 Test Ehb: Spring hammer
15 - 5.1 Test apparatus
16 - 5.2 Influence of earth's gravity
16 - 5.3 Calibration
16 - 6 Test Ehc: Vertical hammer
16 - 6.1 Definition
16 - 6.2 Test apparatus
17 - 6.3 Height of fall
18 - Annex A - Shapes of striking elements
21 - Annex B - Procedure for the calibration of spring hammers
21 - B.1 Principle of calibration
21 - B.2 Construction of the calibration device
21 - B.3 Method of calibration of the calibration device
22 - B.4 Use of the calibration device
29 - Annex C - Guidance
29 - C.1 When is an impact test appropriate?
29 - C.2 Choice of the test apparatus
29 - C.3 Choice of the energy level
30 - C.4 Information for testing
31 - Annex D - Example of pendulum hammer test apparatus
35 - Annex E - Example of spring hammer test apparatus

AS 60068.2.75-2003 identically adopts IEC 60068-2-75:1997 which provides three standardized and co-ordinated test methods for determining the ability of a specimen to withstand specified severities of impact.

This part of IEC 60068 provides three standardized and co-ordinated test methods for determining the ability of a specimen to withstand specified severities of impact. It is used, in particular, to demonstrate an acceptable level of robustness when assessing the safety of a product and is primarily intended for the testing of electrotechnical items. It consists of the application to the specimen of a prescribed number of impacts defined by their impact energy and applied in the prescribed directions. This part of IEC 60068 covers energy levels ranging from 0,14 joules (J) to 50 joules (J). Three types of test apparatus are applicable to perform these tests. Annex C provides some guidance as to this aspect.

First published as AS 1099.2.63-1994.
Revised and redesignated as AS 60068.2.75-2003.