{"id":238937,"date":"2024-10-19T15:37:13","date_gmt":"2024-10-19T15:37:13","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-60068-2-572013\/"},"modified":"2024-10-25T10:18:46","modified_gmt":"2024-10-25T10:18:46","slug":"bs-en-60068-2-572013","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-60068-2-572013\/","title":{"rendered":"BS EN 60068-2-57:2013"},"content":{"rendered":"

IEC 60068-2-57:2013 provides a standard procedure for determining, by the time-history and sine-beat methods, the ability of a specimen to withstand specified severities of transient vibration. This third edition cancels and replaces the second edition, published in 1999. It also replaces IEC 60068-2-59:1990, which will be withdrawn. This edition includes only minor technical changes with respect to the previous edition: – editorially combines IEC 60068-2-57 and IEC 60068-2-59; – the title has been modified to include a sine beat method. This publication is to be read in conjunction with \/2.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
6<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
8<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
9<\/td>\nFigure 1 \u2013 Sequence of five sine beats with five cycles <\/td>\n<\/tr>\n
10<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
15<\/td>\nFigure 2 \u2013 Number of cycles per sine beat <\/td>\n<\/tr>\n
16<\/td>\nFigure 3 \u2013 Typical time history
Figure 4 \u2013 Typical logarithmic plot of a required response spectrum,test response spectrum and tolerance zone <\/td>\n<\/tr>\n
17<\/td>\n4 Test requirements and associated parameters
4.1 General
4.2 Requirements for testing
Table 1 \u2013 Comparison of tolerances <\/td>\n<\/tr>\n
18<\/td>\n4.3 Vibration response investigation
4.3.1 General
4.3.2 Basic motion
4.3.3 Transverse motion
4.3.4 Rotational motion
4.3.5 Measuring points <\/td>\n<\/tr>\n
19<\/td>\n4.3.6 Vibration amplitude tolerances
4.3.7 Frequency tolerances
4.3.8 Sweeping
4.3.9 Damping ratio <\/td>\n<\/tr>\n
20<\/td>\n4.4 Time-history testing
4.4.1 Basic motion
4.4.2 Transverse motion
4.4.3 Rotational motion
4.4.4 Tolerance zone for the required response spectrum <\/td>\n<\/tr>\n
21<\/td>\n4.4.5 Frequency range
4.5 Sine-beat testing
4.5.1 General description
4.5.2 Vibration amplitude tolerances
4.5.3 Test frequency tolerances
4.5.4 Transverse motion <\/td>\n<\/tr>\n
22<\/td>\n4.6 Mounting
5 Severities
5.1 General
5.2 Time history <\/td>\n<\/tr>\n
23<\/td>\n5.3 Test frequency range
5.4 Required response spectrum
5.5 Number and duration of time-histories
5.5.1 Number of time histories
5.5.2 Time-history duration
Figures
Tables
Table 2 \u2013 Recommended test frequency ranges <\/td>\n<\/tr>\n
24<\/td>\n5.5.3 Duration of the strong part of the time history
5.5.4 Number of high stress cycles
Figure 5 \u2013 Typical response of an oscillator excited bya specific time history during a test <\/td>\n<\/tr>\n
25<\/td>\n5.6 Sine-beat test level
5.6.1 General
Table 3 \u2013 Recommended test levels with a crossover frequencyof 0,8\u00a0Hz (see Figure 6) <\/td>\n<\/tr>\n
26<\/td>\nFigure 6 \u2013 Recommended test level with crossover frequency at 0,8\u00a0Hz <\/td>\n<\/tr>\n
27<\/td>\nTable 4 \u2013 Recommended test levels with a crossover frequencyof 1,6\u00a0Hz (see Figure 7) <\/td>\n<\/tr>\n
28<\/td>\nFigure 7 \u2013 Recommended test level with crossover frequency at 1,6\u00a0Hz <\/td>\n<\/tr>\n
29<\/td>\nTable 5 \u2013 Recommended test levels with a crossover frequencyof 8\u00a0Hz (see Figure 8) <\/td>\n<\/tr>\n
30<\/td>\nFigure 8 \u2013 Recommended test level with crossover frequency at 8\u00a0Hz <\/td>\n<\/tr>\n
31<\/td>\n5.6.2 Test frequency determination
5.6.3 Sine-beat test wave
5.6.4 Number of cycles in the sine beat <\/td>\n<\/tr>\n
32<\/td>\n5.6.5 Modulating frequency
Figure 9 \u2013 Amplification factors of different sine beats, continuous sineand a typical natural time-history <\/td>\n<\/tr>\n
33<\/td>\n5.6.6 Number of sine beats
5.6.7 High-stress low-cycle fatigue effects
6 Preconditioning
7 Initial measurements
8 Testing
8.1 General
8.2 Vibration response investigation <\/td>\n<\/tr>\n
34<\/td>\n8.3 Time-history testing
8.4 Sine-beat testing
8.5 Multi-axis testing
8.5.1 General
8.5.2 Single axis testing
8.5.3 Biaxial testing
8.5.4 Triaxial testing <\/td>\n<\/tr>\n
35<\/td>\n9 Intermediate measurements
10 Recovery
11 Final measurements
12 Information to be given in the relevant specification <\/td>\n<\/tr>\n
36<\/td>\n13 Information to be given in the test report <\/td>\n<\/tr>\n
37<\/td>\nAnnex\u00a0A (informative)Guidance for time-history and sine-beat methods <\/td>\n<\/tr>\n
39<\/td>\nFigure A.1 \u2013 Recommended shape of a required response spectrumin generalized form <\/td>\n<\/tr>\n
42<\/td>\nFigure A.2 \u2013 Standardized presentation of matched sine beatsof acceleration, velocity and displacement (five cycles within the sine beat of acceleration) <\/td>\n<\/tr>\n
43<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Environmental testing – Tests. Test Ff: Vibration. Time-history and sine-beat method<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2013<\/td>\n46<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":238941,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-238937","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/238937","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/238941"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=238937"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=238937"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=238937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}