POP-IN AND CRACK ARREST IN AN HY80 WELD
It is generally thought that, when a material is in its brittle to ductile transition, it is more difficult to design for crack arrest than to prevent crack initiation (cleavage). This report shows that this is not always true for weldments. Comparison is made between compact crack arrest (CCA), Ka,...
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| Veröffentlicht in: | Fatigue & fracture of engineering materials & structures 1991-05, Vol.14 (5), p.565-578 |
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| container_title | Fatigue & fracture of engineering materials & structures |
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| creator | Sumpter, J. D. G. |
| description | It is generally thought that, when a material is in its brittle to ductile transition, it is more difficult to design for crack arrest than to prevent crack initiation (cleavage). This report shows that this is not always true for weldments. Comparison is made between compact crack arrest (CCA), Ka, and crack tip opening displacement (CTOD), KJc, toughness for the same HY80 weld. The value of Ka is shown to be much higher than the minimum KJc for pop‐in fracture initiation. It is considered that the results support the conclusion of Japanese research workers (Arimochi and Isaka) that small pop‐ins (in the CTOD test) propagate and arrest without load drop. It follows that prediction of structural failure for weldments need not be based on minimum pop‐in toughness from CTOD tests. |
| doi_str_mv | 10.1111/j.1460-2695.1991.tb00683.x |
| format | Article |
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D. G.</creator><creatorcontrib>Sumpter, J. D. G.</creatorcontrib><description>It is generally thought that, when a material is in its brittle to ductile transition, it is more difficult to design for crack arrest than to prevent crack initiation (cleavage). This report shows that this is not always true for weldments. Comparison is made between compact crack arrest (CCA), Ka, and crack tip opening displacement (CTOD), KJc, toughness for the same HY80 weld. The value of Ka is shown to be much higher than the minimum KJc for pop‐in fracture initiation. It is considered that the results support the conclusion of Japanese research workers (Arimochi and Isaka) that small pop‐ins (in the CTOD test) propagate and arrest without load drop. It follows that prediction of structural failure for weldments need not be based on minimum pop‐in toughness from CTOD tests.</description><identifier>ISSN: 8756-758X</identifier><identifier>EISSN: 1460-2695</identifier><identifier>DOI: 10.1111/j.1460-2695.1991.tb00683.x</identifier><identifier>CODEN: FFESEY</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>Applied sciences ; Exact sciences and technology ; Fractures ; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology ; Metals. 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It follows that prediction of structural failure for weldments need not be based on minimum pop‐in toughness from CTOD tests.</description><subject>Applied sciences</subject><subject>Exact sciences and technology</subject><subject>Fractures</subject><subject>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</subject><subject>Metals. 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It is considered that the results support the conclusion of Japanese research workers (Arimochi and Isaka) that small pop‐ins (in the CTOD test) propagate and arrest without load drop. It follows that prediction of structural failure for weldments need not be based on minimum pop‐in toughness from CTOD tests.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1460-2695.1991.tb00683.x</doi><tpages>14</tpages></addata></record> |
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| ispartof | Fatigue & fracture of engineering materials & structures, 1991-05, Vol.14 (5), p.565-578 |
| issn | 8756-758X 1460-2695 |
| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Applied sciences Exact sciences and technology Fractures Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy |
| title | POP-IN AND CRACK ARREST IN AN HY80 WELD |
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