[{"command":"settings","settings":{"basePath":"\/","pathPrefix":"hi\/","ajaxPageState":{"theme":"csir","theme_token":"YL8KuCJxufUIT1I0jCM0UYFqYmdoGshxiVPqAJeJJgw"},"encrypt_submissions":{"baseUrl":"https:\/\/serc.res.in"}},"merge":true},{"command":"insert","method":"replaceWith","selector":"#node-1820","data":"\u003Cdiv id=\u0022node-1820\u0022 class=\u0022node node-research-external-projects clearfix\u0022 about=\u0022\/hi\/fatigue-and-fracture-studies-carbon-and-stainless-steel-pipe-welds-and-elbows\u0022 typeof=\u0022sioc:Item foaf:Document\u0022\u003E\n\n        \u003Ch2\u003E\n      \u003Ca href=\u0022\/hi\/fatigue-and-fracture-studies-carbon-and-stainless-steel-pipe-welds-and-elbows\u0022\u003EFatigue and fracture studies on carbon and stainless steel pipe welds and elbows\u003C\/a\u003E\n    \u003C\/h2\u003E\n    \u003Cspan property=\u0022dc:title\u0022 content=\u0022Fatigue and fracture studies on carbon and stainless steel pipe welds and elbows\u0022 class=\u0022rdf-meta element-hidden\u0022\u003E\u003C\/span\u003E\u003Cspan property=\u0022sioc:num_replies\u0022 content=\u00220\u0022 datatype=\u0022xsd:integer\u0022 class=\u0022rdf-meta element-hidden\u0022\u003E\u003C\/span\u003E\n  \n  \u003Cdiv class=\u0022content clearfix\u0022\u003E\n    \u003Cdiv class=\u0022field field-name-body field-type-text-with-summary field-label-above\u0022\u003E\u003Cdiv class=\u0022field-label\u0022\u003EAbout:\u0026nbsp;\u003C\/div\u003E\u003Cdiv class=\u0022field-items\u0022\u003E\u003Cdiv class=\u0022field-item even\u0022 property=\u0022content:encoded\u0022\u003E\u003Cp style=\u0022text-align:justify;\u0022\u003EExperimental investigations were carried out on 168 mm and 324 mm outer diameter pipes and elbows made of SA 333 Gr. 6 carbon steel and Type 304LN stainless steel used in power plant industry to demonstrate the Leak-Before-Break (LBB) design criterion. Fatigue crack growth studies were carried out on pipes with circumferential outer surface notch at base metal, weld metal and heat affected zone under cyclic loading in air and water environments, vibration loading, and combined torsion and bending in air environment and elbows with circumferential outer surface notch, axial notch and without notch in air environment under in-plane bending moment. Beach mark loading technique was introduced during fatigue tests to validate the crack depth measurement using ACPD technique. Number of cycles for crack initiation, fatigue crack propagation and fatigue life (through-wall crack) were observed under various loading and environmental conditions for straight pipes and elbows.\u003C\/p\u003E\n\u003C\/div\u003E\u003C\/div\u003E\u003C\/div\u003E\u003Cdiv class=\u0022field field-name-field-project-images field-type-image field-label-above\u0022\u003E\u003Cdiv class=\u0022field-label\u0022\u003EProject Images:\u0026nbsp;\u003C\/div\u003E\u003Cdiv class=\u0022field-items\u0022\u003E\u003Cdiv class=\u0022field-item even\u0022\u003E\u003Cimg typeof=\u0022foaf:Image\u0022 src=\u0022https:\/\/serc.res.in\/sites\/default\/files\/ffl1a.jpg\u0022 width=\u0022768\u0022 height=\u00221024\u0022 alt=\u0022View of fatigue test set-up\u0022 title=\u0022View of fatigue test set-up\u0022 \/\u003E\u003C\/div\u003E\u003Cdiv class=\u0022field-item odd\u0022\u003E\u003Cimg typeof=\u0022foaf:Image\u0022 src=\u0022https:\/\/serc.res.in\/sites\/default\/files\/ffl1b.jpg\u0022 width=\u0022821\u0022 height=\u0022615\u0022 alt=\u0022Close-up view of water environment chamber and instrumentation for crack depth measurements using ACPD technique\u0022 title=\u0022Close-up view of water environment chamber and instrumentation for crack depth measurements using ACPD technique\u0022 \/\u003E\u003C\/div\u003E\u003Cdiv class=\u0022field-item even\u0022\u003E\u003Cimg typeof=\u0022foaf:Image\u0022 src=\u0022https:\/\/serc.res.in\/sites\/default\/files\/ffl1c.jpg\u0022 width=\u0022768\u0022 height=\u00221024\u0022 alt=\u0022View of fatigue test on pipe under torsion and loading\u0022 title=\u0022View of fatigue test on pipe under torsion and loading\u0022 \/\u003E\u003C\/div\u003E\u003Cdiv class=\u0022field-item odd\u0022\u003E\u003Cimg typeof=\u0022foaf:Image\u0022 src=\u0022https:\/\/serc.res.in\/sites\/default\/files\/ffl1d-773x1030.jpg\u0022 width=\u0022773\u0022 height=\u00221030\u0022 alt=\u0022View of fatigue test on elbow\u0022 title=\u0022View of fatigue test on elbow\u0022 \/\u003E\u003C\/div\u003E\u003Cdiv class=\u0022field-item even\u0022\u003E\u003Cimg typeof=\u0022foaf:Image\u0022 src=\u0022https:\/\/serc.res.in\/sites\/default\/files\/ffl1e.jpg\u0022 width=\u00221024\u0022 height=\u0022768\u0022 alt=\u0022Close-up view of test set-up under torsion and bending\u0022 title=\u0022Close-up view of test set-up under torsion and bending\u0022 \/\u003E\u003C\/div\u003E\u003Cdiv class=\u0022field-item odd\u0022\u003E\u003Cimg typeof=\u0022foaf:Image\u0022 src=\u0022https:\/\/serc.res.in\/sites\/default\/files\/ffl1f.png\u0022 width=\u0022539\u0022 height=\u0022144\u0022 alt=\u0022Crack profile development for different cycles of loading\u0022 title=\u0022Crack profile development for different cycles of loading\u0022 \/\u003E\u003C\/div\u003E\u003Cdiv class=\u0022field-item even\u0022\u003E\u003Cimg typeof=\u0022foaf:Image\u0022 src=\u0022https:\/\/serc.res.in\/sites\/default\/files\/ffl1g.jpg\u0022 width=\u00221024\u0022 height=\u0022768\u0022 alt=\u0022Fatigue surface of the pipe showing beach mark\u0022 title=\u0022Fatigue surface of the pipe showing beach mark\u0022 \/\u003E\u003C\/div\u003E\u003C\/div\u003E\u003C\/div\u003E\u003Cdiv class=\u0022field field-name-field-project-enterprise-categor field-type-taxonomy-term-reference field-label-above clearfix\u0022\u003E\u003Ch3 class=\u0022field-label\u0022\u003EProject Enterprise Category: \u003C\/h3\u003E\u003Cul class=\u0022links\u0022\u003E\u003Cli class=\u0022taxonomy-term-reference-0\u0022\u003E\u003Ca href=\u0022\/hi\/research-expertise\/fatigue-fracture\u0022 typeof=\u0022skos:Concept\u0022 property=\u0022rdfs:label skos:prefLabel\u0022 datatype=\u0022\u0022\u003EFatigue \u0026amp; Fracture\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\u003C\/div\u003E  \u003C\/div\u003E\n\n      \u003Cdiv class=\u0022link-wrapper\u0022\u003E\n      \u003Cul class=\u0022links inline\u0022\u003E\u003Cli class=\u0022node-readless first\u0022\u003E\u003Ca href=\u0022\/hi\/more\/node\/1820\/teaser\u0022 class=\u0022use-ajax\u0022\u003ERead less\u003C\/a\u003E\u003C\/li\u003E\n\u003Cli class=\u0022translation_en\u0022\u003E\u003Ca href=\u0022\/fatigue-and-fracture-studies-carbon-and-stainless-steel-pipe-welds-and-elbows\u0022 title=\u0022Fatigue and fracture studies on carbon and stainless steel pipe welds and elbows\u0022 class=\u0022translation-link\u0022 xml:lang=\u0022en\u0022\u003EEnglish\u003C\/a\u003E\u003C\/li\u003E\n\u003Cli class=\u0022translation_ta last\u0022\u003E\u003Ca href=\u0022\/ta\/fatigue-and-fracture-studies-carbon-and-stainless-steel-pipe-welds-and-elbows\u0022 title=\u0022Fatigue and fracture studies on carbon and stainless steel pipe welds and elbows\u0022 class=\u0022translation-link\u0022 xml:lang=\u0022ta\u0022\u003E\u0ba4\u0bae\u0bbf\u0bb4\u0bcd\u003C\/a\u003E\u003C\/li\u003E\n\u003C\/ul\u003E    \u003C\/div\u003E\n  \n  \n\u003C\/div\u003E","settings":null},{"command":"invoke","selector":"#node-1820","method":"addClass","arguments":["more-load node-teaser"]},{"command":"readmore_ajax","speed":"350"}]