PDF
Full
Outline
Research on the fatigue performance and failure modes of H340LAD+Z (1.2 mm)-H340LAD+Z (1.2 mm) spot welding cross joints and spot welding stripping joint was conducted. The study identifies that the maximum force of the spot welding cross joint tensile test is 9.0 kN, the maximum force of the spot welding stripping joint tensile test is 1.9 kN, and the maximum hardness of the spot welding joint is 348 HV 1 located at the nugget area, the spot welding cross joint and the maximum force-fatigue life curve of the spot welded stripping joint show a linear relationship under the logarithmic coordinate axis, and the fatigue performance of the spot welding cross joint is better than that of the spot welding stripping joint. Finally, the fatigue failure modes and fatigue fracture morphology characteristics of the spot welding cross joint and the spot welding stripping joint were observed. The failure modes of the two joints are slightly different, and the fatigue fracture morphology is composed of crack sources and expansion zones.
PDF
241
98
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
