Fatigue properties and fracture mechanism of load carrying type fillet joints with one-sided welding
The structures of the hydraulic excavator and the crane have numerous one-sided welded joints. However, attachments with box like structures are difficult to weld at both sides. Therefore, high accurate evaluation method is needed. In this study, the fatigue properties and the fracture mechanism of...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2015-12-01
|
| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1644 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841562869555003392 |
|---|---|
| author | Takamasa Abe Hiroyuki Akebono Masahiko Kato Atsushi Sugeta |
| author_facet | Takamasa Abe Hiroyuki Akebono Masahiko Kato Atsushi Sugeta |
| author_sort | Takamasa Abe |
| collection | DOAJ |
| description | The structures of the hydraulic excavator and the crane have numerous one-sided welded joints. However, attachments with box like structures are difficult to weld at both sides. Therefore, high accurate evaluation method is needed. In this study, the fatigue properties and the fracture mechanism of the load carrying type fillet joints with one-sided welding were investigated experimentally to evaluate its fatigue damage with high accuracy based on the experimental results. As the results, fatigue cracks in the test piece initiated from the tip of the unwelded portion and propagated into the welding materials. Multiple welding defects were observed in the unwelded portion, but did not appear to be crack origins. Although these welding defects affected the direction of crack propagation they exerted minimal influence. The three-dimensional observations revealed that fatigue cracks initiate at an early stage of the fatigue development. We infer that the fatigue lifetime is chiefly governed by the crack propagation lifetime. Cracks were initiated at multiple sites in the test piece. As the number of cycles increased, these cracks propagated and combined. So considering the combination of cracks from multiple crack origins is important for a precise evaluation of fatigue damage. |
| format | Article |
| id | doaj-art-af0561e2a95c4385b00877ca0cf961cb |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2015-12-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-af0561e2a95c4385b00877ca0cf961cb2025-01-03T00:40:21ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932015-12-011035Fatigue properties and fracture mechanism of load carrying type fillet joints with one-sided weldingTakamasa AbeHiroyuki AkebonoMasahiko KatoAtsushi SugetaThe structures of the hydraulic excavator and the crane have numerous one-sided welded joints. However, attachments with box like structures are difficult to weld at both sides. Therefore, high accurate evaluation method is needed. In this study, the fatigue properties and the fracture mechanism of the load carrying type fillet joints with one-sided welding were investigated experimentally to evaluate its fatigue damage with high accuracy based on the experimental results. As the results, fatigue cracks in the test piece initiated from the tip of the unwelded portion and propagated into the welding materials. Multiple welding defects were observed in the unwelded portion, but did not appear to be crack origins. Although these welding defects affected the direction of crack propagation they exerted minimal influence. The three-dimensional observations revealed that fatigue cracks initiate at an early stage of the fatigue development. We infer that the fatigue lifetime is chiefly governed by the crack propagation lifetime. Cracks were initiated at multiple sites in the test piece. As the number of cycles increased, these cracks propagated and combined. So considering the combination of cracks from multiple crack origins is important for a precise evaluation of fatigue damage.https://www.fracturae.com/index.php/fis/article/view/1644Crack Propagation |
| spellingShingle | Takamasa Abe Hiroyuki Akebono Masahiko Kato Atsushi Sugeta Fatigue properties and fracture mechanism of load carrying type fillet joints with one-sided welding Fracture and Structural Integrity Crack Propagation |
| title | Fatigue properties and fracture mechanism of load carrying type fillet joints with one-sided welding |
| title_full | Fatigue properties and fracture mechanism of load carrying type fillet joints with one-sided welding |
| title_fullStr | Fatigue properties and fracture mechanism of load carrying type fillet joints with one-sided welding |
| title_full_unstemmed | Fatigue properties and fracture mechanism of load carrying type fillet joints with one-sided welding |
| title_short | Fatigue properties and fracture mechanism of load carrying type fillet joints with one-sided welding |
| title_sort | fatigue properties and fracture mechanism of load carrying type fillet joints with one sided welding |
| topic | Crack Propagation |
| url | https://www.fracturae.com/index.php/fis/article/view/1644 |
| work_keys_str_mv | AT takamasaabe fatiguepropertiesandfracturemechanismofloadcarryingtypefilletjointswithonesidedwelding AT hiroyukiakebono fatiguepropertiesandfracturemechanismofloadcarryingtypefilletjointswithonesidedwelding AT masahikokato fatiguepropertiesandfracturemechanismofloadcarryingtypefilletjointswithonesidedwelding AT atsushisugeta fatiguepropertiesandfracturemechanismofloadcarryingtypefilletjointswithonesidedwelding |