{"id":294051,"date":"2024-10-19T19:59:15","date_gmt":"2024-10-19T19:59:15","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-121082018\/"},"modified":"2024-10-25T17:11:51","modified_gmt":"2024-10-25T17:11:51","slug":"bs-iso-121082018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-121082018\/","title":{"rendered":"BS ISO 12108:2018"},"content":{"rendered":"

This document describes tests for determining the fatigue crack growth rate from the fatigue crack growth threshold stress-intensity factor range, \u0394K<\/i>th<\/sub>, to the onset of rapid, unstable fracture.<\/p>\n

This document is primarily intended for use in evaluating isotropic metallic materials under predominantly linear-elastic stress conditions and with force applied only perpendicular to the crack plane (mode I stress condition), and with a constant force ratio, R<\/i>.<\/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
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
7<\/td>\nForeword <\/td>\n<\/tr>\n
8<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
12<\/td>\n4 Symbols and abbreviated terms
4.1 Symbols <\/td>\n<\/tr>\n
13<\/td>\n4.2 Abbreviated terms for specimen identification
5 Apparatus
5.1 Testing machine. <\/td>\n<\/tr>\n
14<\/td>\n5.2 Cycle-counter.
5.3 Crack length measurement apparatus.
6 Specimens
6.1 General
6.2 Crack plane orientation <\/td>\n<\/tr>\n
16<\/td>\n6.3 Starter notch precracking details <\/td>\n<\/tr>\n
18<\/td>\n6.4 Stress-intensity factor
6.5 Specimen size
6.6 Specimen thickness
6.7 Residual stress <\/td>\n<\/tr>\n
19<\/td>\n7 Procedure
7.1 Fatigue precracking
7.2 Crack length measurement <\/td>\n<\/tr>\n
20<\/td>\n7.3 Constant-force-amplitude, \u039a-increasing, test procedure for da\/dN > 10\u22125 mm\/cycle <\/td>\n<\/tr>\n
21<\/td>\n7.4 K-decreasing procedure for da\/dN < 10\u22125 mm\/cycle <\/td>\n<\/tr>\n
23<\/td>\n8 Crack length measurement
8.1 Resolution
8.2 Interruption
8.3 Static force
8.4 Measurement interval <\/td>\n<\/tr>\n
24<\/td>\n8.5 Symmetry
8.6 Out-of-plane cracking
8.7 Crack tip bifurcation
8.8 Non-visual crack length measurement
8.9 Visual crack length measurement
9 Calculations
9.1 Crack-front curvature <\/td>\n<\/tr>\n
25<\/td>\n9.2 Determining the fatigue crack growth rate
9.2.1 General
9.2.2 Secant method <\/td>\n<\/tr>\n
26<\/td>\n9.2.3 Incremental polynomial method
9.3 Determination of the fatigue crack growth threshold
10 Test report
10.1 General
10.2 Material <\/td>\n<\/tr>\n
27<\/td>\n10.3 Test specimen
10.4 Precracking terminal values
10.5 Test conditions <\/td>\n<\/tr>\n
28<\/td>\n10.6 Test analysis
10.7 Presentation of results <\/td>\n<\/tr>\n
35<\/td>\nAnnex A (normative) Compact tension (CT) specimen <\/td>\n<\/tr>\n
40<\/td>\nAnnex B (normative) Centre crack tension (CCT) specimen <\/td>\n<\/tr>\n
46<\/td>\nAnnex C (normative) Single edge notch tension (SENT) specimen <\/td>\n<\/tr>\n
49<\/td>\nAnnex D (normative) Single edge notch bend (SENB) specimens <\/td>\n<\/tr>\n
56<\/td>\nAnnex E (informative) Non-visual crack length measurement methodology \u2014 Electric potential difference[9][12][36] <\/td>\n<\/tr>\n
59<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Metallic materials. Fatigue testing. Fatigue crack growth 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>\n2018<\/td>\n62<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":294055,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1088,2641],"product_tag":[],"class_list":{"0":"post-294051","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-77-040-10","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/294051","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\/294055"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=294051"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=294051"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=294051"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}